[Botany • 2026] Begonia thanhquyetii (Begoniaceae, sect. Petermannia) • A New Species from Quang Tri province, Central Vietnam

Begonia thanhquyetii  C.H. Nguyen, T.A. Le & C.W. Lin,

in Duong, C. H. Nguyen, Le, Bui, Dinh, Dang, Y. T. Nguyen, Tran, T. H. Nguyen, Averyanov et Lin, 2026.

DOI: doi.org/10.11646/phytotaxa.762.2.8 

 facebook.com/Darthvaderiana

Abstract

Begonia thanhquyetii, a new species from central Vietnam, is herein described and illustrated. It is morphologically most similar to B. baik in its creeping habit, rugose ovate leaves, and protogynous inflorescences. However, it differs in several key morphological characters, including stipules hirsute on the abaxial surface (vs. glabrous), bracts lacking glandular hairs along the margins (vs. glandular-ciliate), a pair of bracteoles present near the apex of the pistillate pedicel (vs. bracteoles absent), abaxial tepals of both staminate and pistillate flowers hirsute (vs. glabrous), and densely hirsute ovary (vs. glabrous). Following the IUCN Red List Categories and Criteria (Version 16), B. thanhquyetii is provisionally assessed as Least Concern (LC), pending further field surveys to clarify its distribution and population status.

Eudicots, biodiversity, endemism, Flora of Vietnam, Indochina, taxonomy

Begonia thanhquyetii sp. nov.

 

NAM VAN DUONG, CUONG HUU NGUYEN, ANH TUAN LE, DOI THE BUI, DIEN DINH, HA VAN DANG, YEN THI NGUYEN, HUNG THE TRAN, TUAN HOANG NGUYEN, LEONID V. AVERYANOV and CHE WEI LIN. 2026. Begonia thanhquyetii (B. sect. Petermannia, Begoniaceae), A New Species from Quang Tri province, Central Vietnam.  Phytotaxa. 762(2); 177-184. DOI: doi.org/10.11646/phytotaxa.762.2.8 [2026-06-16] 

 facebook.com/Darthvaderiana/posts/10233296686462751

[Entomology • 2020] Apsidophora bala & A. chandrapatyae • Two New Species of the Genus Apsidophora Diakonoff, 1973 (Lepidoptera: Tortricidae: Olethreutinae) from Thailand

[2, 5] Apsidophora bala, sp. nov. (holotype, male)
[3, 6] A. bala, sp. nov. (paratype, females)
[4, 7] A. chandrapatyae, sp. nov. (holotype, male) 

Pinkaew & Muadsub, 2020

DOI: doi.org/10.11646/zootaxa.4877.3.1 

Researchgate.net/publication/346815150

Abstract

 Two new species, Apsidophora bala sp. nov. and Apsidophora chandrapatyae sp. nov., are described. Illustrations of adult and genitalia are provided. We also present a photograph of living specimen of A. chandrapatyae sp. nov. in natural resting posture. The two new taxa increase the number of described Apsidophora species to 3.

 Key words: new species, Olethreutini, Thailand

 

 Head of Apsidophora spp. 5. Apsidophora bala, sp. nov. (holotype, male) 6. A. bala, sp. nov. (paratype, female np13274) 7. A. chandrapatyae, sp. nov. (holotype, male).

 Wing pattern of Apsidophora spp. 2. Apsidophora bala, sp. nov. (holotype, male) 3. A. bala, sp. nov. (paratype, female np6675) 4. A. chandrapatyae, sp. nov. (holotype, male), scale bars = 2 mm.

 Male hindwing of Apsidophora spp.
8–9. Apsidophora bala, sp. nov. (holotype, male) 8. Hindwing 9. Projecting lobe
10–13. A. chandrapatyae, sp. nov. (holotype, male) 10. Hindwing 11. Projecting lobe 12. Two groups of sex scales on hindwing (upperside hindwing) 13. A row of long scales (underside hindwing).

Nantasak Pinkaew and Sopita Muadsub. 2020. Two New Species of the Genus Apsidophora Diakonoff, 1973 (Lepidoptera: Tortricidae: Olethreutinae) from Thailand. Zootaxa. 4877(3); 401–412. DOI: doi.org/10.11646/zootaxa.4877.3.1 

Researchgate.net/publication/346815150_Two_new_Apsidophora_from_Thailand

[Botany • 2025] Newmania bambusifolia (Zingiberaceae: Zingiberoideae) • A New Species from Hon Ba Nature Reserve, southern Vietnam

 

Newmania bambusifolia Škorničk., Vuong & Bao, 

in Truong, Q.B. Nguyen, Q.C. Nguyen et Leong-Škorničková, 2025. 

Gardens’ Bulletin Singapore. 77(1);   

ABSTRACT    

 Newmania bambusifolia Škorničk., Vuong & Bao (Zingiberaceae:

Zingiberoideae), a new ginger species discovered in Hon Ba Nature Reserve, Khanh Hoa

Province in southern Vietnam is described and illustrated here with notes on distribution,

ecology, phenology, preliminary IUCN assessment, and etymology. It is distinct from all

known congeners by the very narrow leaf-blades, resembling those of bamboos. This discovery

increases the total number of species in Newmania to seven. We include an updated key to the

genus accommodating this novelty.

Keywords. Eastern Indochina, gingers, Khanh Hoa Province, Vulnerable, Zingibereae

Newmania bambusifolia Škorničk., Vuong & Bao in situ at Hon Ba Nature Reserve.
From the type, Truong et al. BV 1774. (Photo: B.V. Truong)

Newmania bambusifolia Škorničk., Vuong & Bao. 
A. Habit (inset: detail of cross-section of rhizome). Scale bar: 30 cm. B. Leaf blades from various parts of the leafy shoot (from the left: distal, middle part of pseudostem (two blades), basal). C. Pseudostem showing ligules, pulvinate petioles and bases of leaf blades. D, E. Detail of leaf sheaths and ligules. F. Rhizome with an inflorescence.

All from the type, Truong et al. BV 1774. (Photos: B.V. Truong)

Newmania bambusifolia Škorničk., Vuong & Bao.   
A. Distal part of the flower in different views. B. Details of stamen and stigma (left: entire stamen in adaxial view; top right: anther with part of filament in abaxial and lateral views; bottom right: details of stigma). C. Flower with bract, pedicel and part of rachis, and dissection below (from left: bract, bracteole, calyx, dorsal corolla lobe in abaxial view, lateral corolla lobes (one in adaxial and one in abaxial view), staminodes (one in abaxial and one in adaxial view), and labellum. Tweezers seen across the labellum were used to flatten it.

 All from the type, Truong et al. BV 1774. (Photos: B.V. Truong)

Newmania bambusifolia Škorničk., Vuong & Bao, sp. nov. 

Unique in the genus by its prominently narrow, bamboo-like leaf-blades and dark purple labellum with overlapping lobes. Flowers are most similar to Newmania cristata by the yellow to greenish floral tube and filament, but differ by having a small anther crest less than 1 mm long with entire rounded apex (vs anther crest 4.6–5 mm long with a bilobed apex).

Etymology. The specific epithet refers to the unusually narrow, bamboo-like leaf blades.  

Truong, B.V., Nguyen, Q.B., Nguyen, Q.C. & Leong-Škorničková, J. 2025. Newmania bambusifolia (Zingiberaceae: Zingiberoideae), A New Species from Hon Ba Nature Reserve, southern Vietnam. Gardens’ Bulletin Singapore. 77(1); 113 - 120.

[Entomology • 2026] Varitrella sulu & V. alternata • New Species and Bioacoustics of Varitrella (Cantotrella) (Orthoptera: Ensifera: Oecanthidae: Podoscirtinae) from Sulu Archipelago and Borneo’s Sabah

 

Varitrella (Cantotrella) sulu Haibil, Nuñeza & Tan, 

in Haibil, Nuñeza, Damit, Japir, Chung et Tan, 2026.

DOI: doi.org/10.11646/zootaxa.5821.1.4 

facebook.com: Arthur CHUNG 

 

Abstract

Two new species of Varitrella (Cantotrella) (Oecanthidae: Podoscirtinae) are described from Sulu Archipelago: Varitrella (Cantotrella) sulu Haibil, Nuñeza & Tan, sp. nov. and Varitrella (Cantotrella) alternata Haibil, Nuñeza & Tan, sp. nov. The calling songs of Varitrella (Cantotrella) sulu Haibil, Nuñeza & Tan, sp. nov. and Varitrella (Cantotrella) trusmadi Gorochov, 2014 are also described.

Orthoptera, Calling songs, East Malaysia, Philippines, Podoscirtini, Southeast Asia

Varitrella (Cantotrella) sulu Haibil, Nuñeza & Tan, sp. nov. 

Varitrella (Cantotrella) alternata Haibil, Nuñeza & Tan, sp. nov. 

HELEN H. HAIBIL, OLGA MACAS NUÑEZA, DAYANG FAZRINAH BINTI AWG DAMIT, RAZY JAPIR, ARTHUR Y.C. CHUNG and MING KAI TAN. 2026. New Species and Bioacoustics of Varitrella (Cantotrella) (Oecanthidae: Podoscirtinae) from Sulu Archipelago and Borneo’s Sabah.  Zootaxa. 5821(1); 61-77. DOI: doi.org/10.11646/zootaxa.5821.1.4 [2026-05-28]

 facebook.com/ArthurCHUNG123799/posts/3545681898914705

[PaleoEntomology • 2026] Qiongqi multispurous • A New Cricket (Orthoptera: Trigonidiidae) from mid-Cretaceous Kachin Amber in Northern Myanmar

Qiongqi multispurous 

Ji, Nel, Xiao & Xu, 2026

DOI: doi.org/10.54103/2039-4942/29769

Abstract

A new species of Trigonidiidae, †Qiongqi multispurous sp. nov., is described from mid-Cretaceous Kachin amber. It can be definitely attributed to the family Trigonidiidae, but excluded from the two extant subfamilies. It also exhibits a different morphology from all reported trigonidiids genera and species from the Mesozoic, including subapical/apical spurs on the hind tibia and setae-like processes on the hind basitarsomere. This new discovery provides novel morphological information of Cretaceous Trigonidiidae, and highlights the potential of biodiversity of Cretaceous crickets.

Keywords: Trigonidiidae; mid-Cretaceous; new species; fossil; morphology

Qiongqi multispurous sp. nov., holotype NIGP210185.
A) Photograph of  habitus in dorsal view. B) Drawing of  habitus in dorsal view.
C) Drawing of  habitus in ventral view. D) Photograph of  habitus in ventral view.

Scale bars = 1 mm.

Qiongqi multispurous sp. nov.

XIA JI, ANDRÉ NEL, CHUANTAO XIAO and CHUNPENG XU. 2026. A NEW CRICKET (ORTHOPTERA: TRIGONIDIIDAE) FROM MID-CRETACEOUS KACHIN AMBER IN NORTHERN MYANMAR. RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA. 132(1); DOI: doi.org/10.54103/2039-4942/29769 [06-03-2026]

[Ornithology • 2026] Rhipidura laguceria • A New and Cryptic Fantail Species (Passeriformes: Rhipiduridae) from the Babar Islands, Maluku Province, Indonesia

 

Cheerful Fantail Rhipidura laguceria Eaton & Berryman, 2026  from Babar (left) and 
Cinnamon-tailed Fantail R. fuscorufa P. L. Sclater, 1883  from the Tanimbars (right),  

DOI: doi.org/10.25226/bboc.v146i2.2026.a6 

Photographs: James A. Eaton (both taken in November 2022)

 Abstract  

The Babar Islands, in the Banda Sea, Indonesia, have long been known to host several endemic avian taxa, but only recently have some of these been elevated to species rank. Here we investigate the internal taxonomy of Cinnamon-tailed Fantail Rhipidura fuscorufa P. L. Sclater, 1883, a monotypic passerine found on the Tanimbar Islands (from which it was described) and, 135 km to the west, on the Babar Islands. We compare differences between these populations using 19 specimens and 18 sound recordings, finding that while morphologically they differ subtly (Babar birds are slightly darker above, less extensively cinnamon below), the two have consistently different songs. Moreover, across 132 playback experiments, we find that both populations always ignore allopatric song but typically respond to sympatric song. On the basis that these lines of evidence likely represent barriers to reproduction, we consider the population on the Babar Islands to be taxonomically distinct from that on the Tanimbar Islands. In the absence of an available name, we describe it as a new species.

Photographs of Cinnamon-tailed Fantail Rhipidura fuscorufa from Babar (left) and the Tanimbars (right), both taken in November 2022 (James A. Eaton)

Rhipidura laguceria sp. nov.

  

Diagnosis.—Differs from Tanimbar R. fuscorufa in its consistently darker forehead, crown, nape, mantle and back that are often discernible in the field (pers. obs.); it also has, on average, less extensive buffish on the underparts, being largely confined to the belly (not extending to the lower breast). The most pronounced difference, however, is in the two species' song: R. fuscorufa delivers strophes of 8–18 staccato whistles which randomly change in pitch, while R. laguceria emits a series of 6–8 notes that steadily ascend in pitch (Fig. 4). Birds on each island are unresponsive to allopatric song.

Northern Fantail Rhipidura [rufiventris] hoedti (of Romang, Damar, Leti, Moa and Sermata) and R. [r.] assimilis (Kai Islands)—sometimes recognised specifically as Banda Sea Fantail and Kai Fantail respectively (Eaton et al. 2016, 2021, del Hoyo & Collar 2016)—has an obvious white-streaked grey breast-band, greyer head and upperparts (with a much broader supercilium in assimilis), plain wings lacking extensive cinnamon, much less richly coloured belly (appearing almost whitish in hoedti and pale buff in assimilis) and white (not cinnamon) outertail feathers. They also have very different vocalisations (Eaton et al. 2021).

Etymology.—Because the pleasing song of this taxon is its most distinctive attribute, we name the species for its vocalisations (lagu ceria = Indonesian for ‘cheerful song’). We employ the name as a noun in apposition.

Vernacular names.—While the English names ‘Tanimbar Fantail’ and ‘Babar Fantail’ are ostensibly appropriate for R. fuscorufa s. s. and R. laguceria respectively, the Tanimbar islands host two other sympatric fantail species—Supertramp Fantail R. semicollaris and Long-tailed Fantail R. opistherythra—the second of which is also endemic to the islands. Accordingly, we prefer the English names ‘Trembling Fantail’ for R. fuscorufa and ‘Cheerful Fantail’ for R. laguceria, given that their distinctive vocalisations have led us to propose separating them taxonomically.

Geographic distribution.—Endemic to Babar, Indonesia, and perhaps occurs too on the island's five small satellites, although these have not been explored ornithologically.

James A. Eaton and Alex J. Berryman. 2026. A New and Cryptic Fantail Species from the Babar Islands, Maluku Province, Indonesia. Bulletin of the British Ornithologists’ Club. 146(2); 203-215. DOI: doi.org/10.25226/bboc.v146i2.2026.a6 (3 June 2026) 

https://www.researchgate.net/profile/James-Eaton

[Ornithology • 2022] Zosterops paruhbesar • A distinct New Species of Zosterops White-eye (Passeriformes: Zosteropidae) from the Sulawesi Region, Indonesia

Zosterops paruhbesar 

 Irham, Prawiradilaga, Menner, O'Connell, Kelly, Analuddin, Karya, Meads, Marples & Rheindt, 2022

   

Wangi-wangi White-eye || DOI: doi.org/10.1111/ibi.13148 

 twitter.com/Dar_OConnell 

photo: James Eaton

  

Abstract

We describe a new species of Zosterops white-eye, which is restricted to Wangi-wangi, a single island of roughly 155 km2 in the Wakatobi Archipelago, Indonesia. Informally known as the Wangi-wangi White-eye, the new species is highly distinct both morphologically and genetically. It is considerably larger in body and bill size compared with other regional Zosterops species. The Wangi-wangi White-eye remains locally common but its habitat is dwindling. Given its minute area of occupancy and the threat from the bird trade, we recommend the IUCN status Endangered.

Keywords: bill size, body size, IUCN status Endangered, Wangi-wangi Island

 Wangi-wangi white-eye and  Wakatobi white-eye 

photo: Nicola Marples and David Kelly

Zosterops paruhbesar sp. nov.

Wangi-wangi White-eye

Kacamata Wangi-wangi

Etymology: Zosterops paruhbesar exhibits a prominent massive bill unique among white-eyes in the region. The species epithet is based on the word ‘massive bill’ in Bahasa Indonesia (paruh besar) and is used as an inalienable noun in apposition. 

  

Mohammad Irham, Dewi M. Prawiradilaga, Jochen K. Menner, Darren P. O'Connell, David J. Kelly, Kangkuso Analuddin, Adi Karya, Martin Meads, Nicola M. Marples and Frank E. Rheindt. 2022. A distinct New Species of Zosterops white-eye from the Sulawesi Region, Indonesia. Ibis. DOI: doi.org/10.1111/ibi.13148 

 twitter.com/Dar_OConnell/status/1585258641191407617

  twitter.com/Dar_OConnell/status/1064858735754035200

[Crustacea • 2026] Geosesarma penrissen • A New Species of Vampire Crab of the Genus Geosesarma De Man, 1892 (Brachyura: Sesarmidae) from A montane forest in southwestern Sarawak, Malaysian Borneo

 

Geosesarma penrissen

Grinang, P. Y. C. Ng & P. K. L. Ng, 2026 

 

The Raffles Bulletin of Zoology. 74; 

Abstract 

 A new species of semiterrestrial crab, Geosesarma penrissen, new species, is described herein from Mount Penrissen in southwestern Sarawak, Malaysia. It represents the third species of Geosesarma known from the montane forests of Borneo, the other two being G. larsi Ng & Grinang, 2018 from Mount Ampungan in Serian, Sarawak, and G. aurantium Ng, 1995 from Mount Silam in Sabah. Diagnostic characters distinguishing G. penrissen, new species, from its congeners are provided, together with ecological notes on its highland habitat. 

Key words. freshwater crab, semiterrestrial, taxonomy, lowland forest, comparative morphology

Geosesarma penrissen, new species, live colouration.
A–C, holotype male (10.6 × 10.2 mm) (ZRC 2024.0567); D, paratype male (10.7 × 10.5 mm) (ZRC 2024.0171); E, adult male, on shrub, Batu Panggah trail, photographed 2311 hrs; 6 July 2023 (not collected); F, subadult, on shrub, Batu Panggah trail, photographed 2118 hrs, 6 July 2023 (not collected).

All specimens from Sarawak. E, F, photographed by Chien Lee.

 Geosesarma penrissen, new species

Diagnosis. Carapace almost square, width-to-length ratio 1.01–1.07, lateral margins gently sinuous, subparallel (Figs. 1A, D, 2A–D, 5A, C, F, 6A, D); dorsal surface with welldefined regions, anterior regions covered with small, rounded or flattened, squamate granules (Figs. 1A, C, E, F, 2A–D, 5A, C, E, 6A, D); front deflexed, with 2 broad subtruncate lobes, separated by shallow median concavity; postfrontal, protogastric lobe prominent, sharp-edged (Figs. 1A, C, D, 2A–D, 3A, 6C, F); external orbital tooth acutely triangular, outer margins curving anteriorly, tooth directed obliquely and laterally, clearly extending beyond lateral margin of carapace (Figs. 2A–D, 5A, C, E, 6A, D). Merus of third maxilliped ...

JONGKAR GRINANG, PAUL Y. C. NG and PETER K. L. NG. 2026. A New Species of Vampire Crab of the Genus Geosesarma De Man, 1892 (Crustacea: Brachyura: Sesarmidae) from A montane forest in southwestern Sarawak, Malaysian Borneo. The Raffles Bulletin of Zoology. 74; 457–464.

[Herpetology • 2026] Calotes thailandensis & C. maehongsonensis • Systematics of the Calotes irawadi complex (Squamata: Agamidae) with Two newly described Species from Thailand

Calotes thailandensis 

Prakobkarn, Zug, Tandavanitj & Ngamprasertwong, 2026

 

กิ้งก่ารั้ว, กิ้งก่าหัวแดง  DOI: doi.org/10.3897/zookeys.1281.175455 

Abstract

Two new species of Calotes lizards, Calotes thailandensis sp. nov. and C. maehongsonensis sp. nov., are diagnosed and described from Thailand. These new species are most closely related to C. irawadi and C. wangi, which are members of the C. irawadi complex, supported by phylogenetic analysis of mitochondrial DNA data (ND2 and COI genes) coupled with morphometric and osteological data. Calotes thailandensis sp. nov. and C. maehongsonensis sp. nov. are distinguished from true C. irawadi by having a wider PelvW, but a smaller head size in adult males. In particular, adult males of C. thailandensis sp. nov. obviously differ from both C. irawadi and C. wangi by having a longer supratympanic spine, whereas C. maehongsonensis sp. nov. has a distinctly longer hindlimb than that of C. irawadi and C. wangi. As a result, two new species increase the list of known Calotes species in Thailand to four species; C. thailandensis sp. nov., C. maehongsonensis sp. nov., C. emma and C. goetzi.

Key words: Morphometric analysis, osteology, phylogenetic analysis, Southeast Asia, taxonomy

An uncollected male (A, B) on breeding season (March, 2025) and female (D) (CUMZ-R-2767) of Calotes thailandensis sp. nov. in rubber plantation (C) at Khlong Hoi Kong District, Songkhla Province, Thailand.

 Calotes thailandensis sp. nov. 

C. maehongsonensis sp. nov.

 Arpapan Prakobkarn, George R. Zug, Nontivich Tandavanitj and Thongchai Ngamprasertwong. 2026. Systematics of the Calotes irawadi complex (Squamata, Agamidae) with Two newly described Species from Thailand. ZooKeys. 1281: 69-104. DOI: doi.org/10.3897/zookeys.1281.175455 [03-06-2026]

[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  

 facebook.com/TanawatChaowasku

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]

 facebook.com/TanawatChaowasku/posts/4464220417200895

[Botany • 2026] Lasianthus sondangii (Rubiaceae) • A New Species with a unique spiciform inflorescence from Central Vietnam

Lasianthus sondangii Bao, Vuong & V.C.Nguyen, 

in Tran, V. C. Nguyen, Luong, Phan-Thi, H. T. Nguyen, Truong et Q. B. Nguyen, 2026. 

taiwania.ntu.edu.tw/abstract/2193

Abstract

Lasianthus sondangii, a new species from Lasianthus section Nudiflorae, is described from Khanh Hoa Province, Central Vietnam. It can be distinguished from other Lasianthus species in Vietnam and surrounding countries by having narrowly triangular stipules, spiciform inflorescences with two or three reduced cyme secondary axes, purple flowers, and clavate calyx lobes with revolute margins. A detailed description of the new species, color plates, distribution, habitat and preliminary conservation assessment are provided.

Keyword: Indochina, Khanh Hoa, Lasiantheae, plant conservation, plant diversity, sect. Nudiflorae

Lasianthus sondangii Bao, Vuong & V.C.Nguyen.
A. A flowering and fruiting branch. B. Apical shoot showing young leaves and stipule. C. Inflorescence and infructescence. D. Infructescence (side view) E. Flowers buds (mature (left) and immature (right)). F. Open flower in different views (side view (left) and top view (right)). G. Corolla artificially cut open, showing hairs at the throat and stamens. H. Flower with the corolla removed to show the ovary, calyx, style, and stigma (left) and longitudinal section that shows the calyx lobes, and the ovule (right). I. Mature fruit (left) and the cross section of fruit shows pyrenes and albumen of seeds (right).

Drawn by Phan Thi Thanh Nha from type QB137.

Lasianthus sondangii Bao, Vuong & V.C.Nguyen.
A. Habit and habitat. B. A flowering and fruiting branch. C. Apical shoot showing young leaves and stipule. D. Stipule. E. Leaves (adaxial surface (left) and abaxial surface (right)). F. Infructescence. G. Inflorescences. H. Inflorescence bearing open flowers.

(A, B, E–H by Nguyen Van Canh; C, D by Nguyen Quoc Bao from type QB137).

Lasianthus sondangii Bao, Vuong & V.C.Nguyen, sp. nov. 

Diagnosis: The new species is distinct from other Lasianthus species in Vietnam and Indo-China by its spiciform, sympodial, reduced-cymose inflorescence; purple flowers (including calyx), calyx lobes obovate with revolute margins.

Thi Thuy Nhan Tran, Van Canh Nguyen, Van Dung Luong, Thanh Nha Phan-Thi, Hoa Thi Nguyen, Ba Vuong Truong and Quoc Bao Nguyen. 2026. Lasianthus sondangii (Rubiaceae, Lasianthus section Nudiflorae), A New Species with a unique spiciform inflorescence from Central Vietnam. Taiwania. 71(3); 488 - 494. DOI: 10.6165/tai.2026.71.488 [26 May 2026] 

 https://taiwania.ntu.edu.tw/abstract/2193

[Entomology • 2026] Sclerocardius lyali • A New Species of the Genus Sclerocardius Schoenherr, 1847 (Coleoptera: Curculionidae) from Thailand

 

Sclerocardius lyali 

Legalov & Bezborodov, 2026

DOI: doi.org/10.48311/jibs.12.02.407 

biotaxa.org/jibs

 facebook.com/AndreiLegalov

Abstract

A new species, Sclerocardius lyali sp. nov., is described and illustrated from Mae Hong Son Province, Thailand. The new species is close to Sclerocardius indicus Hartmann, 1903, but differs in the body covered with short setiform yellowish and pale scales, the postero-ventral side of the protibia lacking teeth, a pronotum with quite large punctation, and a narrower aedeagus. This is the first record of Sclerocardius Schoenherr, 1847, from Thailand. A key to Asian species of the genus Sclerocardius is also given.

 

 Keywords: Curculionoidea, Molytinae, Sclerocardiini, new species, Mae Hong Son Province

 

Sclerocardius lyali sp. n., holotype, male.
A. Habitus, dorsal view; B. Habitus, ventral view; C. Habitus, frontal view; D. Aedeagus, dorsal view; E. Aedeagus, ventral view; F. Aedeagus, lateral view; G. Abdomen, ventral view.

Class Insecta Linnaeus, 1758

Order Coleoptera Linnaeus, 1758

Family Curculionidae Latreille, 1802

Subfamily Molytinae Schoenherr, 1823

Tribe Sclerocardiini Lacordaire, 1866

Genus Sclerocardius Schoenherr, 1847

Type species. Sclerocardius bohemani Schoenherr, 1847.

Sclerocardius lyali Legalov & Bezborodov, sp. nov.

 

Etymology. Patronymic. In honour of Christopher H.C. Lyal (London, UK), who revised the genus

Sclerocardius.

Diagnosis. This new species is closely related to Sclerocardius indicus Hartmann, 1903, but differs in that it has short setiform yellowish and pale scales on the body, a postero-ventral side of the protibia without teeth, a pronotum with quite large punctation, and a narrower aedeagus. Sclerocardius indicus is characterised by a body covered in long, narrow, orange scales; a pronotum with relatively small punctation; a postero-ventral side of the protibia with three rounded teeth; and the aedeagus is also wider.

Andrei Legalov and Vitaly G Bezborodov. 2026. A New Species of the Genus Sclerocardius Schoenherr, 1847 (Coleoptera, Curculionidae) from Thailand. Journal of Insect Biodiversity and Systematics. 12(2); 407-413. DOI: doi.org/10.48311/jibs.12.02.407 [2026-04-16] 

https://www.biotaxa.org/jibs/article/view/88627

 facebook.com/AndreiLegalov/posts/3470913219750951

[Botany • 2026] Tweeddalea capsiciformis (Araceae: Schismatoglottideae) • Unveiling the Fifteenth Species of Tweeddalea from Indonesian Borneo

 

Tweeddalea capsiciformis A.S.D.Irsyam & M.R.Hariri,

in Irsyam, Hariri et Setiawan, 2026. 

DOI: doi.org/10.1007/s12228-026-09883-0  

  linkedin.com

Abstract

A new species of the genus Tweeddalea (Araceae), Tweeddalea capsiciformis, is described and illustrated from West Kalimantan, Indonesian Borneo. This species increases the number of described species in the genus to fifteen. The discovery of T. capsiciformis not only extends the known distribution range of the genus but also highlights the rich yet still insufficiently explored diversity of Araceae in Borneo.

Keywords: Aroid, Kalimantan, Malesia, Multiflora clade, Schismatoglottideae

Tweeddalea capsiciformis.
A. Habit. B. Inflorescence position. C. Spathe. D. Spadix. E. Close-up spadix. F. Close-up staminate flowers zone. G. Close-up pistils and interstice zone.

 (A–F from the holotype.).

Tweeddalea capsiciformis A.S.D.Irsyam & M.R.Hariri., sp. nov.

  

 Etymology. The specific epithet capsiciformis refers to the chili-like shape of the spathe, which resembles the fruit of Capsicum L. (Solanaceae).

Arifin S. D. Irsyam, Muhammad R. Hariri & Ade Agus Setiawan. 2026. Unveiling the Fifteenth Species of Tweeddalea (Araceae) from Indonesian Borneo. Brittonia. DOI: doi.org/10.1007/s12228-026-09883-0 [30 April 2026] 

 linkedin.com/posts/arifin-surya-dwipa-irsyam-5b46a916a_a-new-discovery-from-the-forests-of-kalimantan-activity-7455934737178812416-w7WN

[Botany • 2026] Syzygium khammouanense (Myrtaceae) • A New Species from central Laos

 

Syzygium khammouanense V.S.Dang, Tagane & Soulad.,

in Dang, Souladeth, Pham, Kongxaisavath, Phengmala, Sengthong, Souvannakhoummane, Vongthavone, Yamamoto, Tanaka, Takahashi et Tagane, 2026.

ຫວ້າຄຳມ່ວນ  ||  DOI: doi.org/10.1007/s12225-025-10351-3  

 facebook.com/PhetlasySOULADETH

Summary

A new species, Syzygium khammouanense V.S.Dang, Tagane & Soulad. (Myrtaceae), discovered from Khounkham District, Khammouane Province, central Laos, is described and illustrated. The new species is distinct from other Syzygium species by having 26 – 30 pairs of secondary veins and a strongly quadrangular hypanthium, 1 cm long. A description, provisional conservation assessment, photographs and vernacular name of the new species are provided.

Key Words: Indochina, Khounkham, limestone flora, plant diversity, taxonomy

Syzygium khammouanense V.S.Dang, Tagane & Soulad.
A flowering branch; B leaf, abaxial surface; C flower bud; D inflorescence; E flower, cutaway, showing stamens and style; F young fruits; G hypanthium, with style (left), and petals, adaxial surface (centre), abaxial surface (right). photos by: Shuichiro Tagane.

Syzygium khammouanense V.S.Dang, Tagane & Soulad. sp. nov. 

Etymology. The specific epithet “khammouanense” refers to the name of the province containing the type locality, in Laos.

Vernacular name. ຫວ້າຄຳມ່ວນ (Wa Khammouane, suggested here). “Wa” is the common Lao name for the genus Syzygium, and “khammouanense” represents the province’s name where the type material was collected.

 

Van-Son Dang, Phetlasy Souladeth, Quoc-Trong Pham, Deuanta Kongxaisavath, Kajonesuk Phengmala, Anousone Sengthong, Keooudone Souvannakhoummane, Thyraphon Vongthavone, Takenori Yamamoto, Nobuyuki Tanaka, Kotaro T. Takahashi and Shuichiro Tagane. 2026. A New Species of Syzygium P.Browne ex Gaertn. (Myrtaceae), S. khammouanense, from central Laos.  Kew Bulletin. DOI: doi.org/10.1007/s12225-025-10351-3 [21 May 2026] 

 facebook.com/PhetlasySOULADETH/posts/26753325944295239