Weeyawat Jaitrong

Natural History Museum of the National Science Museum, Thailand · Entomology

A total of 22 species are recognized among the Technomyrmex fauna of Thailand and Laos. They belong to seven species groups: T. albipes group (T. albipes, T. butteli, T. brunneus, T. difficilis, T. elatior, T. modiglianii, T. vitiensis, and T. yamanei); T. bicolor group (T. horni, T. kraepelini, T. lisae, T. obscurior, T. schimmeri, and T. sundaicu...

Two new species, Brachyponera kumtongi Duanchay et Jaitrong, sp. n. and Brachyponera troglomorpha Duanchay et Jaitrong, sp. n., are described based on the worker caste from northern Thailand. These species were collected from caves in both twilight and dark zones. A key to the five Thai species based on the worker caste is provided.

Meranoplus Smith, 1853 is distributed in the Old World tropics, from Africa, Asia, New Guinea to Australia. There are four species Meranoplus bicolor (Guérin-Méneville, 1844), M. castaneus Smith, 1857, M. laeviventris Emery, 1889, and M. mucronatus Smith, 1857 previously recorded from Thailand. In the present paper, two new species of the genus, M....

A new actinomycete strain, ODS25T, exhibited antimicrobial activity against Bacillus subtilis, Kocuria rhizophila, Staphylococcus aureus, Staphylococcus epidermidis, Candida albicans, Candida tropicalis, was isolated from the ants, Odontomachus simillimus, collected from National Science Museum Thailand, Pathum Thani, Thailand. A polyphasic techniq...

The Carebara pygmaea (Emery, 1887) species group in Thailand is reviewed. Among them, five species are recognized, including two newly described species, Carebara adisaki Wimolsuthikul & Jaitrong, sp. nov., and Carebara parvar Wimolsuthikul & Jaitrong, sp. nov., both of which are illustrated based on major and minor workers. In addition, Carebara b...

Thailand, primarily an agricultural nation, faces significant crop yield losses due to various pests. Members of the Dorylus Fabricius, 1793 ant genus are significant pests of both vegetables and cash crops. Despite extensive research on ant taxonomy in Thailand, a comprehensive understanding of ant diversity remains incomplete, with many species a...

Antibiotic resistance is one of the most important global healthcare challenges and is responsible for the mortality of millions of people worldwide every year. It is a crisis attributed to misuse of antibiotics and a lack of new drug development. Actinomycetes constitute a group of Gram-positive bacteria known for their distinctive high guanine-cy...

Two new species, Plagiolepis chomphuphuangi sp. n. and Plagiolepis silpaarchai sp. n., are described based on the worker caste from Laos and Thailand, respectively. The type series of former species was collected on the ground in a coffee plantation at highland (ca. 1000 m). Plagiolepis silpaarchai sp. n. inhabits lowland (ca. 250 m), and the type...

In the present paper Mongolabis chiangmaiensis sp. nov. from Chiang Mai Province, M. chantha sp. nov. from Chanthaburi Province and M. siamensis sp. nov. from Nan Provice are described and illustrated. M. panfilovi (Bey-Bienko, 1953) from Chiang Mai Province and M. emarginata Srivastava, 2003 from Chanthaburi Province are newly recorded for Thailan...

This research aimed to identify the components and indicators of the science teacher identity (STI) of Thai teachers. This study employed an exploratory sequential mixed-methods research design. The study was divided into two phases. Phase 1 aimed to explore factors and indicators of STI of Thai teachers by collecting data from systematic review an...

A recent molecular phylogeny of the genus Crematogaster reclassified some members of the former subgenera Paracrema and Physocrema into the C. inflata-group, now comprised of five species: C. ampullaris, C. inflata, C. modiglianii, C. onusta and C. subcircularis. Here, a molecular analysis of the Crematogaster inflata-group and eight other species...

A new species of the ant genus Vombisidris Bolton, 1991 is described from southern Thailand under the name Vombisidris satunensis sp. nov. based on the worker and queen castes. The new species can be distinguished from the other congeners in having a yellow head and mesosoma, a dark gaster, and a short and straight propodeal spine. The type series...

The subgenus Campomyrma Wheeler, 1911 of the genus Polyrhachis Smith, 1758 in Thailand and Laos is reviewed. Four species are recognized, of which two are described and illustrated as new to science based on the worker and dealate queen under the names Polyrhachis quadrispinosa Jaitrong & Noon-anant, sp. nov. (found in a dead twig on a rubber tree)...

The diving beetle genus Microdytes J. Balfour-Browne, 1946 in Thailand, Laos, and Cambodia is reviewed, and five new species are described: Microdytes eliasi Wewalka & Okada, sp. nov. (Thailand, Cambodia), M. jeenthongi Okada & Wewalka, sp. nov. (Thailand), M. maximiliani Wewalka & Okada, sp. nov. (Laos, China), M. sekaensis Okada & Wewalka, sp. no...

The Polyrhachis (Myrmatopa) flavicornis species group in Thailand is reviewed. Four species are recognized, of which one species closely related to Polyrhachis constructor Smith, 1857 is described and illustrated as new to science based on the worker caste under the name Polyrhachis longipilosa sp. nov. The queens of P. flavicornis Smith, 1857 and...

Protohermes stigmosus Liu, Hayashi & Yang, 2007 was previously known only from the type locality by a single male. The species was classified into the Protohermes costalis species group because it has widely separated ocelli and a subcylindrical male ectoproct bearing a ventral tuft. Our recent survey of Megaloptera from Bo Kluea District, Nan Prov...

Ninety-nine valid species and forty-four valid subspecies of the ge¬nus Lepisiota Santschi, 1926 have been known from the Palaearctic, Afrotropical, southern Indo-Malayan, and Indo-Australian realms. Among them, two species are known from Thailand. In this paper, three additional new species are described from the country: Lepisiota bicolor Jarernk...

A new species of the ant genus Vombisidris Bolton, 1991 is described from southern Thailand under the name Vombisidris satunensis sp. nov. based on the worker and queen castes. The new species can be distinguished from the other congeners in having a yellow head and mesosoma, a dark gaster, and a short and straight propodeal spine. The type series...

A new species of the ant genus Vombisidris Bolton, 1991 is described from southern Thailand under the name Vombisidris satunensis sp. nov. based on the worker and queen castes. The new species can be distinguished from the other congeners in having a yellow head and mesosoma, a dark gaster, and a short and straight propodeal spine. The type series...

We recently published the description of three new species of the genus Biasticus Stål, 1867 (Insecta, Heteroptera, Reduviidae, Harpactorinae) from Central Highlands, Vietnam (Ha NL, Truong XL, Ishikawa T, Jaitrong W, Lee CF, Chouangthavy B, Eguchi K 2022). However, the first author made mistakes when indicating the deposition of the holotype and p...

Understanding mechanistic processes driving biodiversity change in land‐use transformation is paramount but challenging. Functional trait‐based approach provides a framework to understand the environmental filtering process of species composition shifts. Yet, trait selection bias may affect the results on forecasting species dynamics, subsequent an...

Ten species of the genus Parastasia Westwood, 1841 including a new species and a new record are recorded from Thailand. We here describe Parastasia spinosa Hongsuwong, Sanguansub & Jaitrong, new species from eastern Thailand based on a male specimen. Parastasia bimaculata (Guérin-Méneville, 1843) is recorded for the first time in Thailand. We confi...

Three new assassin bug species of the genus Biasticus Stål, 1867 are recognized in Vietnam based on morphological examination, morphometric and molecular phylogenetic analyses, and described as Biasticus taynguyenensis Ha, Truong & Ishikawa, sp. nov., Biasticus griseocapillus Ha, Truong & Ishikawa, sp. nov., and Biasticus luteicollis Ha, Truong & I...

The Platythyrea clypeata species group is reviewed and three species, including one new species, P. homasawini sp. nov., are recognized. This species group is distinguished from the P. parallela species group by the reddish-brown body, the elliptical shape of the propodeal spiracle, the elongate antennal scape, and the distinctly narrowed posteriad...

The Platythyrea clypeata species group is reviewed and three species, including one new species, P. homasawini sp. nov., are recognized. This species group is distinguished from the P. parallela species group by the reddish-brown body, the elliptical shape of the propodeal spiracle, the elongate antennal scape, and the distinctly narrowed posteriad...

Camponotus siamensis sp. nov. is described from northeastern Thailand, based on minor and major workers. The new species belongs to the subgenus Orthonotomyrmex Ashmead, 1906 and is most similar to Camponotus lasiselene Wang et Wu, 1994 and Camponotus selene (Emery, 1889), but it can be recognized by 1) the anterolateral corner of the pronotum in d...

Lepisiota Santschi, 1926 is one of the large ant genera, currently comprising 94 species and 44 subspecies. It belongs to the subfamily Formicinae and is distributed in the Old World. A new species, L. chutimae sp. n., is described here from Nakhon Ratchasima Province based on the worker and queen castes. The type series of the new species was coll...

The foraging behavior of the millipede-specialized predatory ant Leptogenys cyanicatena was observed in Chiang Mai Province, northern Thailand. During the observations, millipede species from two families of the orders Polydesmida (family Paradoxosomatidae) and Spirostreptida (familyHarpagophoridae) were hunted by L. cyanicatena. Lone foragers sear...

The Indian jumping ant Harpegnathos saltator is one of the most well-studied ant species; however, little is known about the biology and behavior of sister species in the genus. To understand the universality of the phenomena revealed in H. saltator, biological studies of closely related species are important. We investigated the nest architecture...

All members of the ant genus Odontomachus Latreille, 1804 are venomous ants. Four species in this genus have been identified from Thailand: Odontomachus latidens Mayr, 1867; O. monticola Emery, 1892; O. rixosus Smith, 1757; and O. simillimus Smith, 1758. The three latter species are available and have been used for an outline morphometric study. Th...

Colony composition and behavioral characteristics of the myrmicine ant, Aphaenogaster rugulosa, a species endemic to Yonagunijima Island, were investigated. Colonies nested in rotten woods fallen on the forest floor. All queenright colonies (N＝42) were monogynous with one dealate queen. The average colony size in worker number was 140.5±SD 94.9. Un...

Dolichoderus Lund, 1831 is one of the large ant genera in the world and belongs to the subfamily Dolichoderinae. Currently, 130 species and 19 subspecies are known in this genus. A new species of the Dolichoderus thoracicus species group, Dolichoderus bakhtiari sp. nov., is here described based on the worker caste. The type series of the new specie...

An updated checklist of the insect and other arthropod type specimens housed in the Natural History Museum...

A checklist of the ceratopogonid specimens housed in the Natural History Museum of the National Science Museum, Thailand (THNHM) is presented for research and scientific communication. A total of 504 specimens, in 94 species of Ceratopogonidae, including 63 paratypes of 19 species in nine genera are housed in THNHM. With 52 species (23 type and 194...

A checklist of the hawkmoth specimens housed in the Natural History Museum of the National Science Museum, Thailand (THNHM) is presented. A total of 1,405 specimens of 97 species, 39 genera in three subfamilies (Sphin-ginae, Smerinthinae, and Macroglossinae) are deposited in THNHM. With 58 species (821 non-type specimens, ca. 58% of the total speci...

Currently, 16 species of the genus Ooceraea Roger, 1862 are known from the Oriental, Australian and Oceanian realms, but no identified species have ever been recorded from Thailand. Here Ooceraea siamensis sp. n. is described from Thailand based on the worker and dealate queen. The new species is most similar to O. biroi (Forel, 1907), a species wi...

The ant subfamily Dorylinae consists of the true army ants and non-army ant genera. The biology of these non-army ants is important in discussing the evolution of the army ant adaptive syndrome. We report on the colony composition, morphological characteristics, and phasic reproduction of a non-army doryline ant Cerapachys sulcinodis species comple...

Rhopalomastix is a bark digger ant that nests in the bark of living trees. The ants share a mutualistic relationship with diaspidids (armoured scale insects), housing them in their nest tunnels in the bark of a tree. Two colonies of Rhopalomastix sp. were sampled from two cultivars of mango trees in a mango plantation in Thailand. The architecture...

Currently, 16 species of the genus Ooceraea Roger, 1862 are known from the Oriental, Australian and Oceanian realms, but no identified species have ever been recorded from Thailand. Here Ooceraea siamensis sp. n. is described from Thailand based on the worker and dealate queen. The new species is most similar to O. biroi (Forel, 1907), a species wi...

In this study, the members of ant genus Lophomyrmex in Thailand are revised. Four species of the genus are recognized in the country. They belong to the following two species-groups: Lophomyrmex bedoti species-group (L. bedoti Emery, 1893; L. lucidus Menozzi, 1930; and L. striatulus Rigato, 1994) and Lophomyrmex quadrispinosus species-group (L. bir...

The present corrigendum corrects errors that occurred in: Wang W.Y., Yong G.W.J. & Jaitrong W. 2021. Revision of the elusive ant genus Rhopalomastix (Hymenoptera, Formicidae, Myrmicinae) in Thailand based on morphology and DNA barcodes, with descriptions of three new species. European Journal of Taxonomy 739: 117–157. https://doi.org/10.5852/ejt.20...

Nevromus Rambur, 1842 is a megalopteran genus belonging to the family Corydalidae, and endemic to the Oriental faunal region. The Thai species of Nevromus are herein revised to include two species: Nevromus aspoeck Liu, Hayashi & Yang, 2012, and Nevromus jeenthongi sp. nov. The larval and pupal stages of N. aspoeck are described here for the first...

The actual prevalence and diversity of the elusive Asian ant genus Rhopalomastix Forel, 1900 in Southeast Asia are largely unknown; only two named species were previously known from Thailand. Following substantial newly-collected museum material made available, we used a combined approach based on morphology and complementary DNA evidence to revise...

A new species Carebara panhai Jaitrong, Pitaktunsakul et Jantarit, sp. n., closely related to C. pygmaea (Emery, 1887), is described from Kanchanaburi Province in Thailand based on the worker caste. The new species is easily distinguished from the closely related species (C. rubra (F. Smith, 1860), C. transversalis (F. Smith, 1860) and C. pygmaea)...

Thailand has a great diversity of ant fauna as a zoogeographical crossroads and biodiversity hotspot. The last publication presenting a Thai ant checklist was published in 2005. In the present paper, based on an examination of museum specimens and published records, a comprehensive and critical species list of Thai ants is synthesized. Currently, 5...

A new species, Euchomenella kasetsart sp. n., is described based on the male and female collected from Nakhon Pathom Province, central Thailand. The new species can be easily distinguished from other Oriental congeners by the smaller pronotal proportion.

Forty-three species and two subspecies of the genus Myopias Roger, 1861 have been known from the Australian, Oceanian, Oriental, and southern Sino-Japanese realms. Among them, four species are known from Borneo. In this paper three new species are described from Sabah (East Malaysia), Borneo, based on the worker caste and dealate gyne: Myopias etsu...

Members of the genus Syscia Roger, 1861 are rare ants of the subfamily Dorylinae. Currently, five valid species are known in the genus, but none have been recorded for Thailand. Here we record this genus for the first time from Thailand, and describe two new species, Syscia chaladthanyakiji sp. n. and Syscia reticularis sp. n., based on the worker...

Multiplexed inter-simple sequence repeat genotyping by sequencing-MIG-seq-is an effective PCR-based method for genome-wide SNP detection using the Next-Generation Sequencing platform, and it provides a potential solution to a central problem in museomics-the difficulties of obtaining useful sequence data from aged specimens with often degraded and...

Multiplexed inter-simple sequence repeat genotyping by sequencing - MIG-seq - is an effective PCR-based method for genome-wide SNP detection using the Next-Generation Sequencing platform, and it provides a potential solution to a central problem in museomics - the difficulties of obtaining useful sequence data from aged specimens with often degrade...

Indosialis Lestage, 1927 is a small and rare megalopteran genus belonging to the family Sialidae and endemic to the Oriental region. The Thai and Lao species of Indosialis are herein revised by an integrative approach combining morphological and molecular evidence, including two species: Indosialis bannaensis Liu, Yang & Hayashi, 2006 and Indosiali...

An issue has been published. Link: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/115947/153071 ------------------------- This study aims to investigate the level of student teachers’ prior experience on science learning (PES) and self-efficacy belief on inquiry-based learning (SEI), as well as to examine the relationship between...

Three species of shining leaf chafer beetles (subfamily Rutelinae) are recorded for the first time from Thailand: Rutelarcha quadrimaculata Waterhouse, 1874 and Parastasia anomala Arrow, 1899 (tribe Rutelini) and Mimela campyloclados Prokofiev et Zorn, 2016 (tribe Anomalini). Additionally the last species is new for the fauna of Laos. Habitus and m...

Thongproh P, Duengkae P, Ratree P, Phetcharat E, Kingwongsa W, Jaitrong W, Chuaynkern Y, Chuaynkern C. 2019. Species diversity and prey items of amphibians in Yoddom Wildlife Sanctuary, northeastern Thailand. Biodiversitas 20: 1718-1732. Amphibian occurrence within Yoddom Wildlife Sanctuary, which is located along the border region among Thailand,...

The ant subfamily Dorylinae contains the true army ant genera, the species of which are dominant predators, as well as non-army ants. Some of the non-army ant genera are closely related to true army ants, so they could be an important key in understanding the evolution of the army ant adaptive syndrome. Nevertheless, there has been little field res...

The male of the genus Anillomyrma is described for the first time based on the material collected in northern Thailand. The male of A. decamera (Emery, 1901) is characterized by the following features: large body size, heavily constructed body, virtual lack of propodeal lobe, small spiculum on anterior margin of abdominal sternum IX, and relatively...

A new species of the ant genus Myrmecina Curtis, 1829 is described and illustrated based on the worker caste under the name Myrmecina raviwonghei Jaitrong, Samung, Waengsothorn et Okido, sp. n. The new species is easily distinguished from the other members of the genus by the first gastral tergite that is covered with fine and dense punctures. The...

Acanthomyrmex Emery, 1893 is a small myrmicine genus of the tribe Crematogastrini. Seventeen species of the genus have been recorded from Southeast Asia. Herein, two new species from Thailand (Acanthomyrmex malikuli sp. n. and Acanthomyrmex mizunoi sp. n.) are added to this genus. Both species belong to Acanthomyrmex luciolae species group. Acantho...

Recurvidris Bolton, 1992 is a small myrmicine genus of the tribe Crematogastrini. Until now, eleven species are known in this genus from Asia. A new species, Recurvidrislekakulisp. n. , is here described from Thailand based on the worker caste. The type series of the new species was collected from leaf litter in a dry evergreen forest. A key to the...

The true diversity of the Asian ant genus Rhopalomastix Forel is poorly understood. We use an integrated approach to review the known species and subspecies of Rhopalomastix in Southeast Asia. Based on morphology and supporting DNA evidence, we recognize six species. We raise two subspecies of R. rothneyi Forel to species rank (R. johorensis Wheele...

The true diversity of the Asian ant genus Rhopalomastix Forel is poorly understood. We use an integrated approach to review the known species and subspecies of Rhopalomastix in Southeast Asia. Based on morphology and supporting DNA evidence, we recognize six species. We raise two subspecies of R. rothneyi Forel to species rank (R. johorensis Wheele...

The genus Myopias Roger, 1861 is distributed in the Australian, Oceanian, Oriental and southern Sino-Japanese realms. Currently 40 valid species and three subspecies have been described, but none have ever been recorded for Thailand. Here we review the species of Thailand, recognizing seven in total. Four are new records of previously described spe...

Из Индии, Китая, стран Юго-Восточной Азии, Новой Гвинеи и Австралии известно 33 вида и 3 подвида древесных муравьев рода Echinopla Smith, 1857. Из Таиланда описываются два новых для науки вида: по касте ра- бочих из северных, центральных и западных провинций - Echinopla charernsomi Tanansathaporn et Jaitrong, sp. n., а по рабочим и сбросившей крыль...