[Diplopoda • 2026] Enghoffosoma chiangmaiense, E. minutum, E. chanabunae • Integrative Taxonomy of the Millipede Genus Enghoffosoma Golovatch, 1993 (Polydesmida: Paradoxosomatidae) in Thailand and Myanmar, with Descriptions of Three New Species

Enghoffosoma chiangmaiense Srisonchai & Likhitrakarn; 
E. minutum Srisonchai & Likhitrakarn; 
 E. chanabunae Srisonchai & Likhitrakarn, 
 

 in Srisonchai, Benchapong, Golovatch, Sutcharit, Panha et Likhitrakarn, 2026. 

DOI: doi.org/10.37828/em.2026.99.4 

   facebook.com/ASRUChula

Abstract

Although comprehensive studies on the Southeast Asian flat-backed millipede genus Enghoffosoma Golovatch, 1993 in Thailand have begun quite recently, in 2014, continuous field surveys have since revealed a steadily increasing species diversity. Based on extensive new material collected from Thailand and Myanmar, three new species are described using an integrative taxonomic approach that combines morphological characters and mitochondrial COI DNA barcoding: Enghoffosoma chiangmaiense Srisonchai & Likhitrakarn sp. n. from northern Thailand, Enghoffosoma minutum Srisonchai & Likhitrakarn sp. n. from northeastern Thailand, and Enghoffosoma chanabunae Srisonchai & Likhitrakarn sp. n. from the Tanintharyi Region, southern Myanmar. COI sequence comparisons, available for E. chanabunae Srisonchai & Likhitrakarn sp. n. and E. chiangmaiense Srisonchai & Likhitrakarn sp. n., reveal significant interspecific genetic divergences (K2P distances) from their congeners, ranging from 13.53–16.75% and 13.53–18.14%, respectively. While DNA data were unavailable for E. minutum Srisonchai & Likhitrakarn sp. n., its distinctive morphological characters, particularly the gonopod structure, clearly support its status as a new species. To provide a clear morphological baseline for comparison, the type species, Enghoffosoma spinipleurum (Carl, 1941), from Myanmar, originally described as Sundanina spinipleura Carl, 1941, is redescribed and illustrated in detail based on the lectotype. With these additions, the genus Enghoffosoma now comprises 21 valid species, confirming its status as a highly diverse and widespread diplopod lineage in the Indochinese region. An updated identification key to all known species and a distribution map are provided.

Enghoffosoma chiangmaiense Srisonchai & Likhitrakarn sp. n. 

 Enghoffosoma minutum Srisonchai & Likhitrakarn sp. n. 

 Enghoffosoma chanabunae Srisonchai & Likhitrakarn sp. n. 

Ruttapon Srisonchai, Theemaporn Benchapong, Sergei I. Golovatch, Chirasak Sutcharit, Somsak Panha, Natdanai Likhitrakarn. 2026. Integrative Taxonomy of the Millipede Genus Enghoffosoma Golovatch, 1993 (Diplopoda, Polydesmida, Paradoxosomatidae) in Thailand and Myanmar, with Descriptions of Three New Species. Ecologica Montenegrina. 99; 40-71. DOI: doi.org/10.37828/em.2026.99.4 [2026-06-24] 

  facebook.com/ASRUChula/posts/1453689620109096

[Chilopoda • 2026] Hainanthereua albilineata • Integrative Morphological and Molecular Evidence reveals A New Genus of scutigerid centipede (Scutigeromorpha: Scutigeridae) from Hainan, China, with implications for its evolution and biogeography

Hainanthereua albilineata   

Li, Edgecombe & Jiang, 2026

 

DOI: doi.org/10.3897/asp.84.e186815

Abstract

Hainanthereua albilineata gen. nov. et sp. nov. is described and illustrated based on specimens from Hainan Province, China. Morphological examination showed that these specimens belong to Thereuoneminae and share certain similarities with Thereuopodina Verhoeff, 1905. Phylogenetic reconstruction based on five genes (nuclear 18S and 28S rRNA, mitochondrial 12S and 16S rRNA, and cytochrome c oxidase subunit I) indicated that the specimens form a distinct and well-supported clade that is sister group to Thereuonema Verhoeff, 1904, so a new genus is accordingly established. Combining the evolutionary history and biogeographic framework of Thereuoneminae, this study revealed the evolutionary significance of Hainanthereua gen. nov. in the context of the Peninsular Indian Plate as a biotic ferry implicated in the origin of East and Southeast Asian lineages. Morphological similarities between Hainanthereua and Thereuopodina are symplesiomorphies of a clade that includes these two genera, Thereuonema and Thereuopoda Verhoeff, 1904.

Key words: Chilopoda, morphology, new species, phylogeny, taxonomic key, Thereuoneminae

Hainanthereua albilineata sp. nov., holotype.
A Habitus, dorsal view, body length 23 mm; B head, dorsal view; C T1, dorsal view; D T2, dorsal view.

Abbreviations: lmd, longitudinal median depression; ap, anterior projection of the (cephalic) transverse suture; To, Tömösváry’s organ; t, (cephalic) transverse suture; ce, compound eye.

 Hainanthereua gen. nov.

Hainanthereua albilineata gen. nov. et sp. nov. 

Habitat of Hainanthereua albilineata sp. nov. (from type locality: Mingfenggu Valley, Jianfengling, Ledong Li Autonomous County, Hainan Province, China).
A Panoramic view of type locality; B woodland on the mountain of type locality shown in A; C interior habitat of the woodland shown in B, the species was collected in relatively dry leaf litter or under stones; D individual of the species found under a stone; E live habitus of the species.

 A–D provided by Mr. Quanyu Ji, E provided by Mr. Jiazhou Lu.

Qing Li, Gregory D. Edgecombe and Chao Jiang. 2026. Integrative Morphological and Molecular Evidence reveals A New Genus of scutigerid centipede from Hainan, China, with implications for its evolution and biogeography (Scutigeromorpha: Scutigeridae). Arthropod Systematics & Phylogeny. 84: 447-464. DOI: doi.org/10.3897/asp.84.e186815

 

[Diplopoda • 2026] Alafanahydesmus lavasoa • Description before Extinction: A New Genus and Ninth Species of indigenous Polydesmida (Dalodesmidae) from Madagascar

Alafanahydesmus lavasoa  

Golles, Yoo & Wesener, 2026

DOI: doi.org/10.11646/zootaxa.5807.1.4 

Abstract

Madagascar’s microendemism is not restricted to large rainforests, but also still exists in small, isolated fragments of natural vegetation. One such fragment is the Lavasoa-Ambatotsirongorongo protected area in southeastern Madagascar, where less than 92 ha of humid forest continue to face deforestation, but to which several species are endemic and critically endangered, including three species of millipedes. Here, we describe Alafanahydesmus lavasoa gen. nov., sp. nov. (Polydesmida: Dalodesmidae), a locally endemic Polydesmida only found in the Lavasoa-Ambatotsirongorongo area. With our here described addition, Polydesmida remain rare on Madagascar, with only four genera and nine known species, all belonging to the family Dalodesmidae. Alafanahydesmus lavasoa gen. nov., sp. nov. shares its small size (10–25 mm) and light/brown colouration with Dalodesmus Cook, 1896, Eutubercularium Brölemann, 1916, and Phymatodesmus de Saussure & Zehntner, 1897, but differs conspicuously in somatic (paraterga projecting weakly before tergite 6, elongated shape of metatergal tubercles, paraprocts (pa) with dorsal setose knobs) and sexual characters (stoutly fused femorites and a unique five-branched gonopod with a retrorse branch). Here, we describe Alafanahydesmus lavasoa gen. nov., sp. nov. integratively, providing the first molecular data for Malagasy Dalodesmidae—via partial cytochrome c oxidase I (COI) sequences (GenBank PX922879–PX922581) and pioneer the first microcomputed tomography (μCT) images for a member of the family, alongside with multilayer photographs and scanning electron microscopy images.

Myriapoda, biodiversity, cytochrome c oxidase I gene, Lavasoa, µCT, microendemism

Alafanahydesmus lavasoa gen. nov., sp. nov., Living specimens, at type locality Lavasoa. Photos taken by Moritz Einhaus in 2025.
A. Adult female walking, dorsolateral view. B. Anterior half of body and head, lateral view. C. Midbody segments and legs, close anterodorsal view. D. Rolled-up female showing egg-care behaviour, lateral view. Not to scale.

Alafanahydesmus lavasoa gen. nov., sp. nov., holotype male (ZFMK MYR14588), focus-stacked images.
A. Head and first segments, dorsal view. B. Telson, lateral view. C. Telson, ventral view. D. Mid-body, dorsal view. E. Posterior half of body, dorsal view. F. Gonopods, ventral view. G. Gonopods, ventrolateral view. H. Gonopods, lateral view. Not to scale.

Abbreviations: Co = collum; db = dichotomous branch; ep = epiproct; h = head; hy = hypoproct; o = ozopore; pa = paraproct; pb = paramedian branch; rb = retrorse branch; sl = subsecuriform solenomere; T = tergite.

 Genus Alafanahydesmus new genus 

Type species: Alafanahydesmus lavasoa sp. nov.

Etymology: The generic name is derived from the Malagasy words ala (forest) and fanahy (soul, spirit, inner essence), combined with the suffix -desmus, commonly used for Polydesmida. The name is treated as masculine.

Distribution: Currently only known from south-eastern Madagascar, the isolated rainforest of the Lavasoa-Ambatotsirongorongo area (Fig. 1).

Alafanahydesmus lavasoa gen. nov., sp. nov., Micro-CT scans, paratype male, (ZFMK MYR14544).
A. Lateral view. B. Anterior body half, showing detailed tergite pattern, dorsal view. C. Segments T9–T12 with stigma openings, ozopores, and  lateral  tergite  projections,  lateral  view. D.  Isolated  second  thoracic  segment  bearing  reduced  second  leg  pair. E.  Close-up  of  sternite  with  posterior  sternite  processes,  ventral  view. F. Telson  and  associated  structures,  ventral  view.  Not  to  scale.

Abbreviations: Co = collum; cx = coxa; ep = epiproct; fe = femur; h = head; hy = hypoproct; o = ozopore; pa = paraproct; pf = prefemur; po = postfemur; sti = stigma opening; s = setae; stp = sterite process; str = sternite; T = tergite; ta = tarsus; ti = tibia.

TIZIANO GOLLES, JEHOON YOO and THOMAS WESENER. 2026. Description before Extinction: A New Genus and Ninth Species of indigenous Polydesmida from Madagascar (Polydesmida: Dalodesmidae).  Zootaxa. 5807(1); 109-124. DOI: doi.org/10.11646/zootaxa.5807.1.4  [2026-05-08]

[Diplopoda • 2026] Rhopalomeris dulcia, R. lentiginosa, R. verhoeffi, ... • Five New Species of the Pill Millipede Genus Rhopalomeris Verhoeff, 1906 (Glomerida: Glomeridae) from Thailand

Rhopalomeris dulcia, 
R. verhoeffi  

Sapparojpattana & Likhitrakarn,

in Sapparojpattana, Jeratthitikul, Siriwut, Srisonchai, Wesener, Sutcharit et Likhitrakarn, 2026.  

DOI: doi.org/10.1163/18759866-bja10090 

 facebook.com/ASRUChula 

Abstract

An integrative approach based on morphological characteristics and DNA data from the mitochondrial COI gene has revealed five new species of the pill millipede genus Rhopalomeris Verhoeff, 1906 from Thailand: Rhopalomeris muka Sapparojpattana & Likhitrakarn, sp. nov., R. lentiginosa Sapparojpattana & Likhitrakarn, sp. nov., R. dulcia Sapparojpattana & Likhitrakarn, sp. nov., R. punctata Sapparojpattana & Likhitrakarn, sp. nov., and R. verhoeffi Sapparojpattana & Likhitrakarn, sp. nov. The five new species are distinguishable from their congeners by distinctive color patterns and telopod structure. The interspecific genetic divergences between the new species and other Rhopalomeris species ranged from 7.86 to 13.71%. Intraspecific genetic divergences within these five species ranged from 0 to 4.53%, with the highest divergences found in R. carnifex and R. verhoeffi sp. nov. This is consistent with both the wide distribution range and the significant intraspecific morphological variations observed in these latter two species. Furthermore, the taxonomic scope of R. carnifex in Thailand is reviewed, and intraspecific morphological variations within R. carnifex and R. verhoeffi sp. nov. are discussed. A distribution map, morphological illustrations from SEM, and an updated key to all known Rhopalomeris species are also provided.

Keywords: DNA barcoding; Indochina; integrative taxonomy; phylogeny; systematics

Rhopalomeris dulcia sp. nov., (A, B) paratype (MUMNH-GLO188), habitus, live coloration (C–E) ♀ paratype (MUMNH-GLO188), alcohol preserved, in dorsal, ventral, and lateral views (A) unrolled in sublateral view (B) rolled in sublateral view.

(A, B) image not to scale (C–E) scale bars: 2 mm

Rhopalomeris verhoeffi sp. nov., (A, B) paratype (MUMNH-GLO201), habitus, live coloration of color morph 2 (C–E) ♀ paratype (MUMNH-GLO201), alcohol preserved specimen of color morph 2 in dorsal, ventral, and lateral views (A) unrolled in sublateral view (B) rolled in sublateral view.

(A, B) image not to scale (C–E) scale bars: 2 mm

 Rhopalomeris muka Sapparojpattana & Likhitrakarn, sp. nov.

R. lentiginosa Sapparojpattana & Likhitrakarn, sp. nov. 

 R. dulcia Sapparojpattana & Likhitrakarn, sp. nov. 

 R. punctata Sapparojpattana & Likhitrakarn, sp. nov. 

 R. verhoeffi Sapparojpattana & Likhitrakarn, sp. nov. 

Distributions of currently known Rhopalomeris species in Thailand and Myanmar

(A) Bayesian inference tree focusing on the detailed topology of Rhopalomeris carnifex (Pocock, 1889) and R. verhoeffi sp. nov., with colored drawings illustrating the color variations within each species. All millipede drawings are not to scale.
(B, C) Maps of southern Thailand showing the distributions of color morphs for (B) R. carnifex and (C) R. verhoeffi sp. nov. The different shaded colors in each pie chart represent the proportion of the corresponding color morphs in that locality.

 Pichsinee Sapparojpattana, Ekgachai Jeratthitikul, Warut Siriwut, Ruttapon Srisonchai, Thomas Wesener, Chirasak Sutcharit, and Natdanai Likhitrakarn. 2026. Five New Species of the Pill Millipede Genus Rhopalomeris Verhoeff, 1906 (Diplopoda, Glomerida) from Thailand. Contributions to Zoology. 95(1); 52–102. DOI: doi.org/10.1163/18759866-bja10090 [20 Feb 2026]

 facebook.com/ASRUChula/posts/1351095590368500

***งานวิจัยใหม่: กิ้งกือกระสุนลูกกวาด 5 ชนิดใหม่ของโลกจากประเทศไทย
และการมีรูปแบบสีที่หลากหลายซึ่งพบในบางชนิด***

...

รายชื่อชนิดใหม่ดังนี้

.

1. 𝙍𝙝𝙤𝙥𝙖𝙡𝙤𝙢𝙚𝙧𝙞𝙨 𝙢𝙪𝙠𝙖 Sapparojpattana & Likhitrakarn, 2026
กิ้งกือกระสุนลูกกวาดมหิดลกาญจน์
 ค้นพบที่ มหาวิทยาลัยมหิดล วิทยาเขตกาญจนบุรี อำเภอไทรโยค จังหวัดกาญจนบุรี

2. 𝙍𝙝𝙤𝙥𝙖𝙡𝙤𝙢𝙚𝙧𝙞𝙨 𝙡𝙚𝙣𝙩𝙞𝙜𝙞𝙣𝙤𝙨𝙖 Sapparojpattana & Likhitrakarn, 2026
ค้นพบที่ ตำบลท่าขนุน อำเภอทองผาภูมิ จังหวัดกาญจนบุรี

3. 𝙍𝙝𝙤𝙥𝙖𝙡𝙤𝙢𝙚𝙧𝙞𝙨 𝙙𝙪𝙡𝙘𝙞𝙖 Sapparojpattana & Likhitrakarn, 2026
ค้นพบที่ ตำบลบ้านนา อำเภอเมืองชุมพร จังหวัดชุมพร

4. 𝙍𝙝𝙤𝙥𝙖𝙡𝙤𝙢𝙚𝙧𝙞𝙨 𝙥𝙪𝙣𝙘𝙩𝙖𝙩𝙖 Sapparojpattana & Likhitrakarn, 2026
ค้นพบที่ ตำบลไร่เก่า อำเภอสามร้อยยอด จังหวัดประจวบคีรีขันธ์

5. 𝙍𝙝𝙤𝙥𝙖𝙡𝙤𝙢𝙚𝙧𝙞𝙨 𝙫𝙚𝙧𝙝𝙤𝙚𝙛𝙛𝙞 Sapparojpattana & Likhitrakarn, 2026
ตั้งชื่อเป็นเกียรติแก่ Karl Wilhelm Verhoeff ผู้ตั้งสกุลกื้งกือกระสุนลูกกวาด 𝙍𝙝𝙤𝙥𝙖𝙡𝙤𝙢𝙚𝙧𝙞𝙨
ค้นพบครั้งแรกที่ น้ำตกกะทู้ อำเภอกะทู้ จังหวัดภูเก็ต และกระจายตัวหลายพื้นที่ในภาคใต้ของประเทศไทย 

[Diplopoda • 2025] Apterourus palomar • A third species of the rare Millipede Genus Apterourus Loomis, 1966 (Chordeumatida: Striarioidea: Apterouridae) from California, USA

Apterourus palomar Shear, Richart and Marek, 2025

 

journals.flvc.org/mundi

Abstract

The millipede genus Apterourus Loomis, 1966, the only genus of the family Apterouridae Loomis, 1966 (Diplopoda: Chordeumatida: Striarioidea), contains two species and is rarely collected. We add a third species from Mt. Palomar, San Diego County, California, USA, Apterourus palomar Shear, Richart and Marek, new species.

Keywords: New Species, Mt. Palomar, California

Apterourus palomar Shear, Richart and Marek, new species.

 William A. Shear, Casey H. Richart, Paul E. Marek. 2025. A third species of the rare Millipede Genus Apterourus Loomis, 1966 (Diplopoda: Chordeumatida: Striarioidea: Apterouridae) Insecta Mundi. 1159: 1–7. [November 28, 2025] 

https://journals.flvc.org/mundi/article/view/140680

https://www.facebook.com/groups/205802113162102/posts/1957847614624201/

[Chilopoda • 2023] Plutogeophilus jurupariquibaba • Assessing Troglomorphic and Phylogenetically Informative Traits in Troglobionts: A New Cave-dwelling Centipede (Geophilidae) illuminates the Evolution of A Soil-dwelling Lineage

 Plutogeophilus jurupariquibaba

Bonato & Ferreira, 2023

DOI: doi.org/10.1007/s13127-023-00618-7 

Abstract

Cave-dwelling species are of special interest in evolutionary biology, because (i) many share particular traits associated with the cave habitat (troglomorphic traits), and (ii) some represent relict lineages that may conserve ancestral traits or possibly transitional traits, which may provide insights into the evolution of other highly derived species. However, these different kinds of characters are hard to assess thoroughly in troglobionts belonging to little known terrestrial arthropod groups. We describe a new species of centipedes from the Areias System caves, Brazil, namely, Plutogeophilus jurupariquibaba gen.n. sp.n., which adds to the few putative troglobionts known among Chilopoda Geophilomorpha. We analyzed a suite of characters in the light of a phylogenetic analysis and by direct comparison with epigean relatives, controlling for interindividual variation and its confounding sources. We found that: (i) troglomorphic traits of P. jurupariquibaba may include large body, elongate antennae, elongate legs and claws, and possibly also elongate setae and large coxal pores; (ii) the cave-dwelling Plutogeophilus is the sister lineage of the soil-dwelling Macronicophilus, whose morphology is highly derived and whose phylogenetic position remained unclear; (iii) compared with other extant geophilids, symplesiomorphic traits and apparently intermediate traits found in Plutogeophilus provide insights on the origin of the morphology of Macronicophilus, suggesting a stepwise modification of labrum, forcipular apparatus and ultimate legs, and the derivation of the unique rounded and spiny tip of the second maxillae from a pointed claw.

Keywords: Neotropics, Chilopoda, Macronicophilus, Plutogeophilus jurupariquibaba, Transitional morphology, Troglomorphy

 Plutogeophilus jurupariquibaba gen.n. sp.n.:
a anterior part of body, dorsal view; b–c head and forcipular segment, dorsal and ventral views, respectively; d–e posterior part of body, dorsal and ventral views, respectively.

 Photos: ♂, ISLA 11879, holotype. Scale bars: 0.4 µm

Living specimen of Plutogeophilus jurupariquibaba gen.n. sp.n. in the Areias de Cima cave, 7.IV.2012 (photo by Robson Zampaulo)

 

Plutogeophilus gen.n. 

Etymology: from the ancient Greek “Ploutōn,” who was the ruler of the underworld in classical mythology.

 Plutogeophilus jurupariquibaba sp.n.

Etymology: from the Tupi-Guarani “jurupariquibaba,” which literally means “devil’s comb” and is used by Brazilian Indians to refer to centipedes.

Lucio Bonato and Rodrigo Lopes Ferreira. 2023. Assessing Troglomorphic and Phylogenetically Informative Traits in Troglobionts: A New Cave-dwelling Centipede illuminates the Evolution of A Soil-dwelling Lineage (Chilopoda: Geophilidae). Organisms Diversity & Evolution. DOI: doi.org/10.1007/s13127-023-00618-7 

 

[Diplopoda • 2025] Yuennanina sirindhornae • Review of the Flat Back Millipede Genus Yuennanina Attems, 1936 (Polydesmida: Paradoxosomatidae), with the Description of a New Species from Thailand

 

Yuennanina sirindhornae 

Likhitrakarn, Golovatch & Panha, 2025

กิ้งกือตะเข็บเจ้าฟ้า  ||  DOI: doi.org/10.58837/tnh.25.8.266228

Abstract

The millipede genus Yuennanina Attems, 1936 has been known so far only from Yunnan Province, southwestern China. Currently, it comprises three species: Y. ceratogaster Attems, 1936, Y. aceratogaster Zhang & Li, 1977, and Y. petalolobodes Chang & Zhang, 1989. Herein, we describe Yuennanina sirindhornae sp. nov., from Huai Nam Dang, Chiang Mai Province, northern Thailand, representing the first formal record of this genus not only from Thailand, but also from entire Southeast Asia. The new species is characterized by its unique gonopodal solenophore the shape of which resembles a young fern frond with fimbriate edges. A detailed redescription of the type species, Y. ceratogaster, is provided based on a revision of type material. An updated identification key to all four presently known Yuennanina species is also provided.

Keywords: arthropod, taxonomy, key

Yuennanina sirindhornae sp. nov., ♂ holotype.
A, B.habitus, live coloration

Yuennanina sirindhornae sp. nov.

Natdanai Likhitrakarn, Sergei Golovatch and Somsak Panha. 2025. Review of the Flat Back Millipede Genus Yuennanina Attems, 1936 (Polydesmida: Paradoxosomatidae), with the Description of a New Species from Thailand. Tropical Natural History. Supplement 8 (2025); 13-23. DOI: doi.org/10.58837/tnh.25.8.266228 [2025-10-14]

 

[Diplopoda • 2025] Coxobolellus sirindhornae • A New Thai Millipede Species of the Genus Coxobolellus (Spirobolida: Pseudospirobolellidae) from northern Thailand

Coxobolellus sirindhornae 

Pimvichai, Prasankok & Backeljau, 2025

 

กิ้งกือกระบอกหางมนสิรินธร || DOI: doi.org/10.58837/tnh.25.8.266861 

 facebook.com/ScienceMSU

Abstract

A new millipede species of the genus Coxobolellus is described from Mae Hong Son Province, Thailand: Coxobolellus sirindhornae sp. nov. The new species is defined by its gonopod morphology and COI DNA barcodes. These latter place the new species within the well-supported Coxobolellus clade. The new species exhibits four gonopod synapomorphies that are diagnostic for the genus: (1) a protruding process on the coxae of the 3rd (and sometimes 4th) pair of male legs, (2) large, triangular coxae on the 4th and 5th pairs of legs, (3) a short process on the preanal ring extending to or slightly beyond the anal valves, and (4) the posterior gonopod telopodite divided into two parts, with a conspicuous pore opening at the mesal margin at the end of the coxal part. The new species is included in an updated morphological identification key for all currently recognized Coxobolellus species.

Keywords: DNA barcoding, gonopod morphology, identification key, phylogeny

Live Coxobolellus sirindhornae sp. nov., holotype, (CUMZ-D00156) from Mae Hong Son Province (Photos by P. Pimvichai).

Coxobolellus sirindhornae sp. nov. 

กิ้งกือกระบอกหางมนสิรินธร

Piyatida Pimvichai, Pongpun Prasankok and Thierry Backeljau. 2025. A New Thai Millipede Species of the Genus Coxobolellus Pimvichai, Enghoff, Panha & Backeljau, 2020 (Diplopoda: Spirobolida: Pseudospirobolellidae). Tropical Natural History. Supplement 8 (2025): 38-51. DOI: doi.org/10.58837/tnh.25.8.266861 

 facebook.com/ScienceMSU/posts/1388774519701373

[Chilopoda • 2025] Strigamia asiatica, S. laterisetosa, S. obliquidentata, ... • Taxonomy of the Strigamia Centipedes (Geophilomorpha: Geophilidae) from the East Asian Mainland

H. Strigamia longiglanda sp. nov., holotype; I. S. dianguiensis sp. nov., holotype; J. S. obliquidentata sp. nov., holotype;
L. S. ziyunensis sp. nov., holotype; M. S. asiatica sp. nov., holotype.
G.  S. laterisetosa sp. nov., holotype; N, O. live specimens of S. laterisetosa (Zhoushan, Zhejiang Province, China; photo by Chao Jiang).

Jiang & Yu, 

in Yu, You et Jiang, 2025. 

DOI: doi.org/10.3897/zse.101.160146 

Abstract

In this study, 15 centipede species of the genus Strigamia Gray, 1843 were recorded from the East Asian mainland, including 7 newly discovered species: S. asiatica Jiang & Yu, sp. nov., S. dianguiensis Jiang & Yu, sp. nov., S. laterisetosa Jiang & Yu, sp. nov., S. longiglanda Jiang & Yu, sp. nov., S. obliquidentata Jiang & Yu, sp. nov., S. xizangensis Jiang & Yu, sp. nov. and S. ziyunensis Jiang & Yu, sp. nov. Strigamia monoporus (Takakuwa, 1938) was proposed as a nomen dubium because it was likely derived from immature specimens and lacked sufficient diagnostic information. A key to Strigamia species from the East Asian mainland is provided.

Key Words: Chilopoda, distribution, morphology, new species, taxonomic key

Forcipular segments of Strigamia spp. (A–M).
A. S. svenhedini (Verhoeff, 1933) (spm. CMMI 20220903086); B. S. japonica (Verhoeff, 1935) (spm. CMMI 20231128001D); C. S. tenuiungulata (Takakuwa, 1938) (spm. CMMI 20230414002D); D. S. bicolor Shinohara, 1981 (spm. CMMI 20210227106);
E. S. platydentata Shinohara, 1981 (spm. CMMI 20210702003D); F. S. korsosi Bonato, Bortolin, Drago, Orlando, Dányi, 2017 (spm. CMMI 20191031044);
G.  S. laterisetosa sp. nov., holotype; H. S. longiglanda sp. nov., holotype; I. S. dianguiensis sp. nov., holotype; J. S. obliquidentata sp. nov., holotype; K. S. xizangensis sp. nov., paratype; L. S. ziyunensis sp. nov., holotype; M. S. asiatica sp. nov., holotype.
N, O. live specimens of S. laterisetosa (Zhoushan, Zhejiang Province, China; photo by Chao Jiang).

Scale bars: 250 μm (A–M).

 Yifei Yu, Chunxue You and Chao Jiang. 2025. Taxonomy of the Strigamia centipedes from the East Asian Mainland (Geophilomorpha, Geophilidae). Zoosystematics and Evolution. 101(4): 2065-2101. DOI: doi.org/10.3897/zse.101.160146 

[Diplopoda • 2025] Thyropygus sirindhornae • Integrative Taxonomy of A New Millipede Species of the Genus Thyropygus Pocock, 1894 (Spirostreptida: Harpagophoridae) from Thailand

Thyropygus sirindhornae

 Pimvichai, Prasankok & Backeljau, 2025

 

กิ้งกือกระบอกหางแหลมสิรินธร || DOI: doi.org/10.58837/tnh.25.8.266935

Abstract

A new juliformian millipede species, Thyropygus sirindhornae sp. nov., is described from Chiang Rai Province, Thailand and assigned to the Thyropygus allevatus group based on two diagnostic gonopodal characters: (1) the gonopod telopodite with both tibial and femoral spines, and (2) a notably long tibial spine recurved toward the femoral spine. Despite its affiliation with the informal T. allevatus group, T. sirindhornae sp. nov. cannot be assigned to one of the four informal subgroups of the T. allevatus group because it lacks any of the diagnostic characters of these subgroups. Similarly, while the COI DNA barcode data support the distinctiveness of T. sirindhornae sp. nov. from other Thyropygus species within the T. allevatus group (mean interspecific sequence divergence of 0.16 ± 0.02, range: 0.12–0.19), they do not provide information about the sister group relationships or subgroup assignment of the new species. As a result, T. sirindhornae sp. nov. is tentatively assigned to the T. allevatus group, but is labelled as “incertae sedis” with respect to its sister group relations and subgroup classification. In fact, as the COI phylogeny only included species of the T. allevatus group, the assignment of T. sirindhornae sp. nov. to this informal species group needs to be confirmed by including representatives of other informal Thyropygus species groups.

Keywords: COI, gonopod, phylogeny

Thyropygus sirindhornae sp. nov., holotype, (CUMZ-D00157) from Chiang Rai Province, Thailand.

Thyropygus sirindhornae sp. nov.

กิ้งกือกระบอกหางแหลมสิรินธร

Etymology.– The species is named to honor Her Royal Highness Princess Maha Chakri Sirindhorn on the occasion of her 70th birthday, acknowledging her dedication to promoting biodiversity research and conservation initiatives in Thailand.

Piyatida Pimvichai, Pongpun Prasankok and Thierry Backeljau. 2025. Integrative Taxonomy of a New Thyropygus Pocock, 1894 Species from Thailand (Diplopoda: Spirostreptida: Harpagophoridae).  Tropical Natural History. Suppl. 8 (2025); 108-120. DOI: doi.org/10.58837/tnh.25.8.266935 [2025-10-14]

[Diplopoda • 2025] Desmoxytes chaofa & D. sirindhornae • Integrative Taxonomy Reveals Two New Dragon Millipede Species in the Genus Desmoxytes Chamberlin, 1923 (Polydesmida: Paradoxosomatidae) from Thailand

 

Desmoxytes chaofa  &  D. sirindhornae  Srisonchai, 
กิ้งกือมังกรเจ้าฟ้าหญิง   &   กิ้งกือมังกรสิรินธร 

in Srisonchai, Srikampha, Benchapong et Panha, 2025.

Tropical Natural History. Supplement 8; 

Abstract

Recent field surveys in northern Thailand led to the discovery of two remarkable new species of dragon millipede in the genus Desmoxytes Chamberlin, 1923. Using an integrative approach that combined morphological and molecular data, we confirmed the validity of these species, herein described as Desmoxytes chaofa Srisonchai, sp. nov. from Mae Hong Son Province and Desmoxytes sirindhornae Srisonchai, sp. nov. from Tak Province. To assess their systematic position and relationships, we conducted morphological examinations and reconstructed the phylogeny based on three gene fragments (COI, 16S rRNA, and 28S rRNA). Phylogenetic analysis supports the validity of these two new species, with genetic divergence in the COI gene clearly distinguishing them from congeners, ranging from 10.67–18.67% for D. chaofa Srisonchai, sp. nov. and 10.05–17.91% for D. sirindhornae Srisonchai, sp. nov. (mean = 14.71%). Notably, the phylogenetic tree aligns well with morphological characters, particularly those of the gonopod. Desmoxytes chaofa Srisonchai, sp. nov. is closely related to D. octoconigera Srisonchai, Enghoff & Panha, 2018, while D. sirindhornae Srisonchai, sp. nov. clusters together with D. des Srisonchai, Enghoff & Panha, 2016, both pairs exhibiting similarities in body colouration and gonopod telopodite. Based on current data, these two species are considered as narrow endemics and are restricted to limestone rock wall habitats. Complete morphological illustrations of the two new species and a distribution map of all Desmoxytes species are provided.

Keywords: biodiversity, evolution, karst, Southeast Asia, systematics

Photographs of live specimens and habitat of Desmoxytes chaofa sp. nov. (paratypes, MZKKU-MYR0014).(A) male paratype; (B) female paratype; (C) mating couple; (D, E) limestone habitat. Scale bars in centimetres.

Class Diplopoda de Blainville in Gervais, 1844

Order Polydesmida Leach, 1815

Family Paradoxosomatidae Daday, 1889

Genus Desmoxytes Chamberlin, 1923

Desmoxytes chaofa Srisonchai, sp. nov.

กิ้งกือมังกรเจ้าฟ้าหญิง

Etymology.–The originally Thai term ‘chaofa’, a noun in apposition, signifies a royal princess of the Thai monarchy and is bestowed in honour of Her Royal Highness Princess Maha Chakri Sirindhorn. Renowned for her dedication to biodiversity research and environ-mental conservation, she has made significant contributions to these fields. With a profound passion for science and nature, she has actively supported research initiatives that deepen the understanding and preservation of Thailand’s rich biodiversity.

Photographs of live specimens and habitat of Desmoxytes sirindhornae sp. nov. (paratypes, MZKKU-MYR0016). (A) male paratype (B) female paratype (C) amorous couple of adults (D, E) limestone habitat. Scale bars in centimetres.

Desmoxytes sirindhornae Srisonchai, sp. nov.

กิ้งกือมังกรสิรินธร

Etymology.– This species is named in honour of Her Royal Highness Princess Maha Chakri Sirindhorn, whose remarkable contributions have significantly advanced biodiversity research and the preservation of Thailand’s natural heritage for future generations. Her unwavering commitment continues to inspire scientists, conservationists, and the public in efforts to safeguard the nation’s ecosystems. She has played a pivotal role in fostering scientific collaborations, supporting re-search institutions, and encouraging young scholars to pursue ecological and environmental studies. Her dedi-cation spans a wide range of conservation initiatives, including the protection of endangered species, forest conservation, and the promotion of sustainable resource management.

Ruttapon Srisonchai, Khanet Srikampha, Theemaporn Benchapong and Somsak Panha. 2025. Integrative Taxonomy Reveals Two New Dragon Millipede Species in the Genus Desmoxytes Chamberlin, 1923 from Thailand (Diplopoda: Polydesmida: Paradoxosomatidae). Tropical Natural History. Supplement 8; 79-107. DOI: 10.58837/tnh.25.8.266903  [2025-10-14]

https://li01.tci-thaijo.org/index.php/tnh/article/view/266903 

[Diplopoda • 2025] Rhopalomeris sirindhornae • A New Species of the Pill Millipede Genus Rhopalomeris Verhoeff, 1906 (Diplopoda: Glomerida) from Southern Thailand

 

Rhopalomeris sirindhornae 

Sapparojpattana, Jeratthitikul & Likhitrakarn, 2025 

กิ้งกือกระสุนพระรามเจ้าฟ้า  ||   Tropical Natural History. Supplement 8

  facebook.com/EkgachaiJeratthitikul

Abstract

A new species of pill millipede, Rhopalomeris sirindhornae sp. nov., is described from southern Thailand based on morphological characteristics and genetic barcoding. This species is distinguished from its congeners by light yellowish body with pale pink lateral margins on each tergum, a pair of black obtuse subtriangular patches on the dorsum, a pair of faded black dots on the lateral side of the thoracic shield, a light yellowish venter with faded light brown spots on pleurites 3–11, and a roundly triangular to spatulate syncoxital lobe of the telopod. Phylogenetic trees based on a fragment of the mitochondrial COI gene confirmed the entity of the new species and revealed a close relationship with R. carnifex and R. nigroflava. Interspecific genetic distances between R. sirindhornae sp. nov. and other Rhopalomeris species ranged from 9.97–14.36%, with the shortest distance to R. carnifex. Intraspecific genetic distances within each Rhopalomeris species ranged from 0–6.16%. A new distribution map of the presently known Rhopalomeris is also provided.

Keywords: Myriapoda, biodiversity, taxonomy, phylogeny, Indochina

Rhopalomeris sirindhornae sp. nov.
 A, B.paratypes (MUMNH–GLO189), habitus, live coloration; A.unrolled in sublateral view; B.rolled in sublateral view;
C–E.♀paratype (MUMNH–GLO189), alcohol preserved, in dorsal, ventral, and lateral views, respectively.

A, B.pictures taken without scale; C–E.scale bars: 2 mm.

Pichsinee Sapparojpattana, Ekgachai Jeratthitikul and Natdanai Likhitrakarn. 2025. A New Species of the Pill Millipede Genus Rhopalomeris Verhoeff, 1906 (Diplopoda, Glomerida) from Southern Thailand. Tropical Natural History. Supplement 8; 52-61. https://li01.tci-thaijo.org/index.php/tnh/article/view/266529 [2025-10-14]

 กิ้งกือกระสุนพระรามเจ้าฟ้า Rhopalomeris sirindhornae: 

กิ้งกือกระสุนขนาดเล็ก ความยาวลำตัวประมาณ 8-11 มิลลิเมตร มีสีสันและลวดลายสวยงาม ลำตัวสีเหลืองอ่อนและบริเวณด้านข้างของลำตัวมีสีแดงอมชมพู บนแผ่นเปลือกมีลายจุดวงรีสีดำ 1 คู่ที่บริเวณหลังตั้งแต่แผ่นเปลือกที่ 3-11 และลายจุดสีดำ 1 จุดที่ด้านข้าง กึ่งกลางของส่วนท้ายแผ่นเปลือกแต่ละแผ่นมีสีเหลือง แผ่นเปลือกแรกมีลวดลายเป็นแผ่นสีน้ำตาลดำขนาดใหญ่ 1 คู่ แผ่นเปลือกที่ 2 มีลายจุดสีดำจางๆที่ด้านข้าง ท้องมีจุดสีน้ำตาลอ่อนบนแผ่นเปลือกที่ 3-11 หัวสีน้ำตาลเข้ม กิ้งกือกระสุนชนิดนี้พบบริเวณเขาหินปูนในเขตจังหวัดชุมพรและสุราษฎร์ธานีในประเทศไทย

  facebook.com/EkgachaiJeratthitikul/posts/32993788623545210