[Botany • 2026] Pseuduvaria sirindhorniana (Annonaceae) • Phylogenetic and Morphological Evidence supports the Recognition of A New Species from southern Thailand

Pseuduvaria sirindhorniana Yoosukkee, Damth. & Chaowasku, 

in Yoosukkee, Damthongdee, Aongyong, Baka, Sama-ae et Chaowasku, 2026. 

รุจิสิริน  ||  DOI: doi.org/10.3767/blumea.2026.70.03.02  

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Abstract

Based on the molecular phylogenetic analyses of six plastid DNA regions (matK and rbcL exons; trnL intron; atpB-rbcL, psbA-trnH and trnL-trnF intergenic spacers) and including 57 samples of Pseuduvaria, as well as thorough morphological studies, Pseuduvaria sirindhorniana (Annonaceae, Miliuseae) is described and illustrated here as a new species from Narathiwat, southern Thailand. The new species belongs to a major clade that also includes P. fragrans, P. gardneri, P. glossopetala, P. kwangtungensis, P. multiovulata and P. phuyensis. Pseuduvaria sirindhorniana is morphologically most similar to P. glossopetala, but differs by having basally connate (vs. free) sepals, larger petals, elliptic-ovate (vs. obovate) outer petals, inner petals that are only connivent at the apex (vs. connivent from the base to ± the midpoint and at the apex), with openings formed from the base (vs. openings formed from ± the midpoint). Pseuduvaria kwangtungensis turns out to be a putative sister of the new species, but the two are morphologically dissimilar in several traits, such as leaf base, inner petal appearance and glands on the inner side of the inner petals.

Keywords: Magnoliids; Malmeoideae; Miliuseae; Pseuduvaria; Systematics; Taxonomy; Thailand

Pseuduvaria sirindhorniana Yoosukkee, Damth. & Chaowasku.
 a. Inflorescences with flowers, from living material of Aongyong & Baka 55.
b. Infructescence with monocarps, from living material of Aongyong & Baka 56.

— Photographs by A. Baka.

 Holotype of Pseuduvaria sirindhorniana Yoosukkee, Damth. & Chaowasku (Aongyong & Baka 55, CMUB).

Pseuduvaria sirindhorniana Yoosukkee, Damth. & Chaowasku sp. nov. 

 Pseuduvaria sirindhorniana differs from the morphologically most similar species, P. glossopetala, by having basally connate (vs. free) sepals, larger petals, elliptic-ovate (vs. obovate) outer petals, inner petals that are only connivent at the apex (vs. connivent at the apex and from the base to ± the midpoint), with openings formed from the base (vs. openings formed from ± the midpoint). 

Etymology — The specific epithet honours H.R.H. Princess Maha Chakri Sirindhorn of Thailand, who has continuously supported the study of plant taxonomy in Thailand and worldwide, on the auspicious occasion of her 72nd (6th cycle) birthday anniversary (2 April 2027). She has also been instrumental in establishing the Plant Genetic Conservation Project under the Royal Initiative (RSPG), which aims to train personnel and develop plant genetic resources for the conservation of plant diversity, with benefits extending to farmers and related sectors of the country.

Vernacular name — Ruchi Sirin (รุจิสิริน).

  C. Yoosukkee, Anissara Damthongdee, Kithisak Aongyong Chanthamrong, Abdulromea Baka, I. Sama-ae and Tanawat Chaowasku. 2026. Molecular Phylogenetic and Morphological Evidence supports the Recognition of Pseuduvaria sirindhorniana (Annonaceae), A New Species from southern Thailand.   Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: doi.org/10.3767/blumea.2026.70.03.02 [May 26, 2026]

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[Botany • 2025] Strobilanthes sirindhorniae (Acanthaceae) • A New Species from Thailand

 

Strobilanthes sirindhorniae Kladwong & Chantar., 

in Kladwong, Modsang et Chantaranothai, 2025. 

Tropical Natural History. Supple. 8; 

ฮ่อมสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.267434

Abstract

A species new to science, belonging to Strobilanthes from Thailand is described. Strobilanthes sirindhorniae Kladwong & Chantar., sp. nov. is found on limestone in northern Thailand. It is morphologically similar to S. maxwellii J.R.I.Wood and S. rosea Nees. A comparison table with similar and closely related species and a distribution map, and an illustration of S. sirindhorniae sp. nov. are provided.

 Strobilanthes sirindhorniae Kladwong & Chantar., sp. nov.

ฮ่อมสิรินธร

Pornchai Kladwong, Naphat Modsang and Pranom Chantaranothai. 2025. A New Species of Strobilanthes Blume (Acanthaceae) from Thailand. Tropical Natural History. Supple. 8; 220-226. DOI: doi.org/10.58837/tnh.25.8.267434 [2025-10-14]

[Mollusca • 2025] Discartemon sirindhornae • A New Discartemon Species (Eupulmonata: Streptaxidae) from Peninsular Thailand

 

Discartemon sirindhornae Artsamart & Siriboon,

in Artsamart, Rungruangdejwattana, Camngam, Raksasin, Sutcharit, Jirapatrasilp et Siriboon, 2025.   

หอยนักล่าสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.267107  

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Abstract

Discartemon sirindhornae Artsamart & Siriboon, sp. nov. is described and illustrated based on specimens collected from Chumphon Province in Peninsular Thailand. The new species possesses a flattened shell with a slightly convex spire, a weakly angular last whorl, and an intermediately expanded whorl. The apertural dentition consists of one parietal lamella, one ridge-like and one small lower palatal, one small basal, and one small columellar lamella. The penis is long, slender and twisted distally, with penial hooks separated by elevated longitudinal folds. The current study advances knowledge of the streptaxid land snail species in Thailand and emphasizes the value of limestone habitats for preserving biodiversity.

Keywords: carnivorous snail, systematics, genitalia, limestone, endemic species

Discartemon sirindhornae

หอยนักล่าสิรินธร 

 

Palod Artsamart, Pongpisit Rungruangdejwattana, Chalinee Camngam, Chutathip Raksasin, Chirasak Sutcharit, Parin Jirapatrasilp and Thanit Siriboon. 2025. Discovery of A New Discartemon Species (Eupulmonata: Streptaxidae) from Peninsular Thailand.  Tropical Natural History. Suppl. 8; 380-389. DOI: doi.org/10.58837/tnh.25.8.267107 [2025-10-20]

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[Fungi • 2025] Sirindhornea siamensis (Basidiomycota: Agaricomycetes) • A New Sequestrate Boletoid Genus of Boletaceae from Thailand

 

Sirindhornea siamensis  

in Lueangjaroenkit, Doungsin, Jangsantear, Boonwanno, Sintawarak, Sahathippayakul, Supapongsri, Sakolrak, Himaman et Sutthinon, 2025. 

เห็ดก้อนอำพันเจ้าฟ้า | DOI: doi.org/10.58837/tnh.25.8.267496

Abstract

This study investigates sequestrate boletes from southern Thailand and presents a morphologically distinctive specimen with a strong cantaloupe-like odor. Detailed morphological and molecular phylogenetic analyses, utilizing the internal transcribed spacer (ITS), large subunit ribosomal RNA (LSU) and RNA polymerase II second largest subunit (RPB2) genes were performed to determine its taxonomic position. Nonetheless, the new sequestrate bolete exhibited a distinctive morphological features, including a scaly peridium, a characteristic cantaloupe-like odor at maturity. Together with molecular evidence, these characteristics clearly distinguish it from other sequestrate boletoid (Chamonixia, Durianella, Octaviania, Rossbeevera, and Turmalinea). These findings support the recognition of a novel genus within the subfamily Leccinoideae. Therefore, we propose a new genus and new species, Sirindhornea siamensis, for this sequestrate bolete species.

Keywords: fungal taxonomy, new genus, Leccinoideae, sequestrate boletes

  

Sirindhornea gen. nov.

เห็ดก้อนอำพันเจ้าฟ้า

Sirindhornea siamensis sp. nov. 

 Etymology.–The species epithet siamensis is named from the former name of Thailand, refers to the geographical origin of this new species.

Classification.–Leccinoideae,  Boletaceae,  Boletales, Agaricomycetes, Agaricomycotina, Basidiomycota

Piyangkun Lueangjaroenkit, Nootcharee Doungsin, Panrada Jangsantear; Tanyaporn Boonwanno; Phanin Sintawarak, Ananya Sahathippayakul, Vassana Supapongsri, Baramee Sakolrak, Winanda Himaman, Pornsawan Sutthinon. 2025. Sirindhornea siamensis, A New Sequestrate Boletoid Genus of Boletaceae from Thailand.  Tropical Natural History. Suppl. 8;  481-492. DOI: doi.org/10.58837/tnh.25.8.267496 

[Mollusca • 2025] Siamopotaxis principalis & S. thailandensis • A New Helicarionoidean Land Snail Genus Siamopotaxis gen. nov. (Eupulmonata: Helicarionidae) from Thailand based on Molecular Phylogenetic and Morphological Evidence

 

Siamopotaxis Pholyotha, gen. nov. 
Siamopotaxis principalis Pholyotha, sp. nov. 
Siamopotaxis thailandensis Pholyotha, sp. nov.

in Pholyotha, Tongkerd, Panha et Sutcharit, 2025.  

 DOI: doi.org/10.58837/tnh.25.8.267115 

Abstract

The new helicarionoidean land snail genus Siamopotaxis Pholyotha, gen. nov. is described for two new species, Siamopotaxis principalis Pholyotha, sp. nov. and Siamopotaxis thailandensis Pholyotha, sp. nov., both from Thailand. The new genus is characterised by a medium-sized, globose, high-spired, cream-coloured shell, with one or two supraperipheral bands, a rounded last whorl, a short epiphallic caecum, an elongated dart apparatus, and many radular teeth with pectiniform cusps. Siamopotaxis principalis sp. nov. differs from S. thailandensis sp. nov. by the presence of one spiral band, whereas the latter species has two spiral bands. A DNA sequence analysis of mitochondrial COI and 16S DNA, and nuclear 28S DNA gene fragments, supports the systematic placement of these new taxa and confirms that Siamopotaxis gen. nov. as a distinct clade within the Helicarionidae.

Keywords: Diversity, Endemic, Indochina, Land snail, Limestone, Taxonomy

A–D Siamopotaxis principalis sp. nov., A holotype CUMZ 15186, and B–D paratypesCUMZ 15257 from the type locality. 
E, F  Siamopotaxis thailandensis sp. nov., E holotype CUMZ 15116 and F paratype CUMZ 15117 from the type locality 

Photographs of living snails.
A, B Siamopotaxis principalis sp. nov., paratype CUMZ 15257, A right side, B left side.
C, D Siamopotaxis thailandensis sp. nov., C right side of paratype CUMZ 15117, D left side of paratype CUMZ 14924.

หอยหางดิ้นเจ้าฟ้า Siamopotaxis principalis 

Arthit Pholyotha, Piyoros Tongkerd, Somsak Panha and Chirasak Sutcharit. 2025. Discovery of a New Helicarionoidean Land Snail Genus Siamopotaxis gen. nov. (Eupulmonata: Helicarionidae) from Thailand Based on Molecular Phylogenetic and Morphological Evidence. Tropical Natural History. Suppl. 8; 121-139. DOI: doi.org/10.58837/tnh.25.8.267115 [2025-10-14]

[Entomology • 2025] Tetraponera sirindhornae • A New Species of the Ant Genus Tetraponera Smith, 1852 (Hymenoptera: Formicidae: Pseudomyrmecinae) from Thailand

 Tetraponera sirindhornae Yodprasit, Tasen & Jaitrong,

in Yodprasit, Tasen, Jeenthong, Buddhakala et Jaitrong, 2025. 

มดตะนอยเทพรัตน์  ||  DOI: doi.org/10.58837/tnh.25.8.266419 

Abstract

Tetraponera Smith, 1852, a large ant genus comprising 87 extant and seven fossil species, is primarily distributed in the Afrotropical, Oriental, and Australasian regions. A new species, Tetraponera sirindhornae Yodprasit, Tasen & Jaitrong, sp. nov., is described from southern Thailand based on worker, dealate queen, and male castes. The new species exhibits worker dimorphism and is morphologically similar to T. binghami (Forel, 1902), T. connectens Ward, 2001, and T. notabilis Ward, 2001 in possessing an elongated head, but differs by the presence of a distinct mandibular gap between masticatory margins when the mandibles are closed (in the case of major worker and queen). The new species was found nesting in a dead rubber tree branch on a tree within a rubber plantation near a stream.

Keywords: dimorphism, new species, taxonomy, key

 Tetraponera sirindhornae Yodprasit, Tasen & Jaitrong, sp. nov.

มดตะนอยเทพรัตน์ 

Kuntima Yodprasit, Wattanachai Tasen, Tadsanai Jeenthong, Nopparat Buddhakala and Weeyawat Jaitrong. 2025. A New Species of the Ant Genus Tetraponera Smith, 1852 (Hymenoptera: Formicidae: Pseudomyrmecinae) from Thailand. Tropical Natural History. Suppl. 8; 287-296. DOI: doi.org/10.58837/tnh.25.8.266419 [2025-10-20] 

 

[Entomology • 2025] Vombisidris sirindhornae • The Ant Genus Vombisidris Bolton, 1991 (Hymenoptera: Formicidae) in Thailand, with a Description of a New Species

Vombisidris sirindhornae Jeenthong, Samung & Jaitrong,

in Jeenthong, Samung, Phosrithong et Jaitrong, 2025. 

มดบากเทพรัตน์  ||  DOI: doi.org/10.58837/tnh.25.8.266521

Abstract

Vombisidris Bolton, 1991, a small ant genus comprising 20 extant species (including the new species), is distributed in India, China, various countries in Southeast Asia, New Guinea, and Queensland of Australia. Two species of the genus, V. satunensis Jeenthong, Jaitrong & Tasen, 2023 and V. sirindhornae Jeenthong, Samung & Jaitrong, sp. nov. are known in Thailand. Vombisidris satunensis inhabits lowland habitats (ca. 100–200 m a.s.l.), while V. sirindhornae is found in highland habitats (1,000 m a.s.l.). Both species were found nesting in dead twigs on trees at forest edges.

Keywords: distribution, identification key, new species, Southeast Asia, taxonomy

Vombisidris sirindhornae Jeenthong, Samung & Jaitrong, sp. nov.

มดบากเทพรัตน์

Tadsanai Jeenthong, Yudthana Samung, Netnapa Phosrithong and Weeyawat Jaitrong. 2025. The Ant Genus Vombisidris Bolton, 1991 (Hymenoptera: Formicidae) in Thailand, with a Description of a New Species.  Tropical Natural History. Suppl. 8;  426-438. DOI: doi.org/10.58837/tnh.25.8.266521

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[Crustacea • 2025] Quadrimaera sirindhornae • A New Species of Quadrimaera (Amphipoda: Maeridae) from Coral Reefs of Chon Buri Province, Thailand

 

Quadrimaera sirindhornae    

Boonyanusith, Putchakarn & Wongkamhaeng, 2025

 Tropical Natural History. Suppl. 8 

แอมฟิพอดเจ้าฟ้า  ||  DOI: doi.org/10.58837/tnh.25.8.267553

Abstract

Quadrimaera sirindhornae sp. nov. was described from specimens collected from algae in a coral reef in Chon Buri Province, Thailand. The new amphipod species can be distinguished from its closest relative by its accessory flagellum with seven articles, gnathopod 2 propodus 1.8x longer than wide, uropod 3 ratio of outer ramus and peduncle is 1.2. The illustration and comparison of diagnostic charac-teristics in male Quadrimaera reported in Southeast Asia were provided.

Keywords: Amphipoda, new species, algal bed, Gulf of Thailand

Quadrimaera sirindhornae sp. nov. 

แอมฟิพอดเจ้าฟ้า

Chaichat Boonyanusith, Sumaitt Putchakarn and Koraon Wongkamhaeng. 2025. A New Species of Quadrimaera (Amphipoda: Maeridae) from Coral Reefs of Chon Buri Province, Thailand.  Tropical Natural History. Suppl. 8;  472-480. DOI: doi.org/10.58837/tnh.25.8.267553 [2025-11-17]

[Entomology • 2025] Coeliccia sirindhornae • A New Damselfly (Odonata: Platycnemididae) from Northwest Thailand

Coeliccia sirindhornae

Makbun, Phan, Ignatius & Keetapithchayakul, 2025

 Tropical Natural History. Suppl. 8 

แมลงปอเข็มท้องยาวเทพรัตน์  ||  DOI: doi.org/10.58837/tnh.25.8.266860 

photographed by Noppadon Makbun

facebook.com: แมลงปอของไทย Dragonflies of Thailand

Abstract

A new species of the genus Coeliccia Kirby, 1890, C. sirindhornae sp. nov., is described based on specimens of both sexes collected from Kanchanaburi Province, Thailand. This species can be differentiated from its congeners by its unique combination of morphological characters, including the shape of antehumeral stripe, the structure and pattern of prothorax, and the shape of anal appendages in both sexes, and the markings on the terminal abdominal segments in female.

Keywords: Damselfly, new species, Zygoptera, Kanchanaburi, Coeliccia

Coeliccia sirindhornae sp. nov. A. Holotype ♂. B. Paratype ♀.

Coeliccia sirindhornae sp. nov. 

แมลงปอเข็มท้องยาวเทพรัตน์   

Coeliccia sirindhornae sp. nov., in typical location.
A. Male. B. Female.
Kanchanaburi, Sangkhla Buri, Prangphle, 2–iv–2017

 photographed by Noppadon Makbun

Noppadon Makbun, Quoc Toan Phan, Kaewpawika Jitthamma Ignatius and Tosaphol Saetung Keetapithchayakul. 2025. Coeliccia sirindhornae sp. nov., A New Damselfly (Odonata: Platycnemididae) from Northwest Thailand.  Tropical Natural History. Suppl. 8;  415-425. DOI: doi.org/10.58837/tnh.25.8.266860 

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[Invertebrate • 2025] Amynthas septuaginta & Metaphire fidelis • Two New Earthworm Species (Oligochaeta: Megascolecidae) from the Mekong River, Thailand

Amynthas septuaginta  Bantaowong & Panha,

in Bantaowong, Chanabun, Nantarat et Panha, 2025. 

  Tropical Natural History. Suppl. 8; 

ไส้เดือนริมโขงบึงกาฬ  ||  DOI: doi.org/10.58837/tnh.25.8.267154 

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Abstract

Two new earthworm species are described from the Mekong River, Thailand, namely Amynthas septuaginta Bantaowong & Panha, sp. nov. and Metaphire fidelis Bantaowong & Panha, sp. nov. The former is a small Mekong earthworm in the A. aeruginosus species group with two pairs of spermathecal pores in 7/8-8/9. It is mainly distinguished from other Amynthas from the Mekong River by its small size (less than 50 mm), and with no genital markings at the male pore region. The latter is distinguished by having four pairs of spermathecal pores in 5/6-8/9, genital markings paired on xvii, ampulla paddle-shaped, and with diverticulum as a slender tube with a loose loop. Morphological description, taxonomic comments, illustrations, and distribution are provided.

Keywords: Amynthas, Metaphire, taxonomy, Mekong River

External and internal morphology of holotype (CUMZ3831) of Amynthas septuaginta sp. nov.,
A. external ventral view; B. internal dorsal view; C. spermathecae. Dark arrow indicates the connection of the spermathecae and spermathecal pore.

 Amynthas septuaginta Bantaowong & Panha, sp. nov. 

ไส้เดือนริมโขงบึงกาฬ

Metaphire fidelis Bantaowong & Panha, sp. nov.

 ไส้เดือนภักดีแม่น้ำโขง

Ueangfa Bantaowong, Ratmanee Chanabun, Nattawadee Nantarat and Somsak Panha. 2025. Description of Two New Earthworm Species (Oligochaeta: Megascolecidae) from the Mekong River, Thailand.  Tropical Natural History. Suppl. 8; 305-312. DOI: doi.org/10.58837/tnh.25.8.267154  [2025-10-20]

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[Crustacea • 2025] Paralona sirindhornae & Karualona cambodiaensis • Two New Species of Cladocera (Cladocera: Chydoridae) from Southeast Asia

Paralona sirindhornae 

Sinev & Sanoamuang, 2025

 Tropical Natural History. Suppl. 8; 

คลาโดเซอแรนสมเด็จพระเทพรัตน์  ||  DOI: doi.org/10.58837/tnh.25.8.267184 

Abstract

Two new cladocera species of the family Chydoridae (Crustacea: Cladocera) are described from Southeast Asia. Populations of Paralona sirindhornae sp. nov. were found in Thailand and Cambodia, while Karualona cambodiaensis sp. nov. was detected in Cambodia only. Paralona sirindhornae sp. nov. differs from the only other species of the genus Paralona Šramek-Hušek, Strašcraba et Brtek, 1962, namely, Holarctic P. pigra (Sars, 1862), in its smaller size, different position of the head pores, and the morphology of thoracic limbs III–V. Our data suggest that the populations of Paralona from South America and Africa also belong to independent species rather than P. pigra. Karualona cambodiaensis sp. nov. differs from other species of the genus in the unique morphology of the posteroventral angle of the valves, as well as in the body shape and morphology of the antenna. The morphology and taxonomic position of two new species are discussed. Both new species appear to be extremely rare in Southeast Asia, and their discovery is a result of recent intensive sampling efforts.

Keywords: biodiversity, Lake Bueng Khong Long, Cambodia, rare species, taxonomy, Thailand

  Paralona sirindhornae sp. nov.

คลาโดเซอแรนสมเด็จพระเทพรัตน์

A, Paralona sirindhornae sp. nov. from Lake Bueng Khong Long, Bueng Khong Long District, Bueng Kan Province, Thailand (type locality), adult parthenogenetic female.
B, Karualona cambodiaensis sp. nov. from a canal at Ropeakpen, Baray district, Kampong Thom Province, Cambodia (type locality), adult parthenogenetic female.

Artem Y. Sinev and La-orsri Sanoamuang. 2025. Paralona sirindhornae sp. nov. and Karualona cambodiaensis sp. nov., Two New Species of Cladocera (Crustacea: Cladocera: Chydoridae) from Southeast Asia.  Tropical Natural History. Suppl. 8; 345-358. DOI: doi.org/10.58837/tnh.25.8.267184 [2025-10-20]

[Crustacea • 2025] Tropodiaptomus sirindhornae • A New Diaptomid Copepod (Copepoda: Calanoida) from Thailand

 

Tropodiaptomus sirindhornae   

Saetang & Maiphae, 2025

Tropical Natural History. Suppl. 8 

โคพีพอดสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.266929

Abstract

Tropodiaptomus sirindhornae sp. nov. is described and illustrated based on materials collected from both permanent and temporary habitats across several regions of Thailand. This new species can be distinguished from its congeners by the following morphological characters of adult male antennule and fifth leg: the antepenultimate segment of right antennule with straight spinous process reaching between 1/2 and 3/4 of next segment; the inner margin of exopodal segment of left fifth leg with two lobes, and with uniform serration; the basis of right fifth leg has one triangular process and one longitudinal hyaline lamella; and second exopodal segment of right fifth leg is rectangular, posterior surface ornamented with one semicircular hyaline knob on middle close to inner margin and one triangular apophysis on distal outer margin. This species is widely distributed both spatially and temporally.

Keywords: diversity, Diaptomidae, cryptic species, new species, Southeast Asia

Tropodiaptomus sirindhornae sp. nov.
 A–G.male holotype: A.habitus, dorsal view; B.urosome, dorsal view; C.rostrum; D.left antennule, segment 1–13; E.left antennule, segment 14–25; F.right antennule, segment 1–16; G.right antennule, segment 17–22. H.female allotype, urosome, dorsal view. Scale bars = 100 μm.

 Tropodiaptomus sirindhornae sp. nov.

โคพีพอดสิรินธร

 

Thanida Saetang and Supiyanit Maiphae. 2025. Tropodiaptomus sirindhornae sp. nov., A New Diaptomid Copepod (Copepoda: Calanoida) from Thailand. Tropical Natural History. Suppl. 8; 334-344. DOI: doi.org/10.58837/tnh.25.8.266929 [2025-10-20]

[Entomology • 2025] Protohermes sirindhornae • A New Species and New Records of the Dobsonfly Genus Protohermes van der Weele, 1907 (Megaloptera: Corydalidae: Corydalinae) from Thailand

 

Protohermes sirindhornae 

Piraonapicha, Chomphuphuang & Liu, 

in Piraonapicha, Chomphuphuang, Wayo, Tu, Hayashi et Liu, 2025.  

แมลงช้างกรามโตเทพรัตน์  ||  DOI: doi.org/10.58837/tnh.25.8.267194 

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Abstract

The dobsonfly genus Protohermes van der Weele, 1907 is the most diverse genus within the family Corydalidae of the order Megaloptera. In the present study, we describe a new species of Protohermes, namely Protohermes sirindhornae Piraonapicha, Chomphuphuang & Liu, sp. nov., and report three additional species newly recorded from Thailand: P. cangyuanensis Yang & Yang, 1988, P. impunctatus Liu, Hayashi & Yang, 2008, and P. striatulus Navás, 1926. These findings are based on an integrative approach that combines both morphological and molecular data. A key to the males of Thai Protohermes species is provided.

Keywords: Neuropterida, aquatic insects, freshwater ecosystems, molecular identification, COI

Habitus photo of Protohermes sirindhornae Piraonapicha, Chomphuphuang & Liu, sp. nov. 
A. Male (Holotype); B. Female (Paratype). Scale bar = 1 cm.

Protohermes sirindhornae Piraonapicha, Chomphuphuang & Liu, sp. nov. living specimens, dorsal  view.
A. Male; B. Female. Scale bars = 1 cm.

Male genitalia of Protohermes sirindhornae Piraonapicha, Chomphuphuang & Liu, sp. nov. (Holotype from Thailand).
A. Dorsal view; B.Ventral view; C. Caudal view; D. Ectoproct in caudal view. Scale bar = 1 mm.

Kanyakorn Piraonapicha, Narin Chomphuphuang , Kanuengnit Wayo, Yuezheng Tu, Fumio Hayashi and Xingyue Liu. 2025. A New Species and New Records of the Dobsonfly Genus Protohermes van der Weele, 1907 (Megaloptera: Corydalidae: Corydalinae) from Thailand. Tropical Natural History. Supplement 8; 188-202. DOI: doi.org/10.58837/tnh.25.8.267194 [2025-10-14]

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