Based on material recently collected in northern Thailand, the present study provides an updated of the genus , including . It comprises six species in Thailand, three of them being new species: Baetiella (Gratia) narumonae, Baetiella (Gratia) sororculaenadinae, Baetiella (Baetiella) bispinosa, Baetiella (Baetiella) baei, Baetiella (Baetiella) lannaensis and Baetiella (Baetiella) bibranchiaBaetiella (Baetiella) baei can be distinguished from other species by the reduction of the posteromedian protuberances on abdominal tergites I-III, the asymmetrical coniform terminal segment of labial palp, the distal margin of abdominal sternites VII-X each with a row of long, spatulate setae, the dorsal margin of femur with two long, robust setae distally. Baetiella (Baetiella) lannaensis is diagnosed by the posteromedian protuberances present on tergites I-VIII, dorsal margin of femur with a regular row of long, rounded, ciliated setae and body surface covered with numerous, dense, rounded scale-like setae.
View Article and Find Full Text PDFPreviously, the euthyplociid mayfly from Thailand was reported as spp. without designation to any nominal species. In this study, the genus Lestage, 1921 in Thailand was reviewed.
View Article and Find Full Text PDFThe genus in Thailand is investigated using an integrative approach (morphology based, ootaxonomy and molecular data) for species delimitation. A total of four species of was identified; (Braasch & Soldán, 1984), (Braasch, 1990), (Braasch, 1990), and (You et al., 1981).
View Article and Find Full Text PDF(Ephemeroptera: Baetidae) is established as a new baetid mayfly genus from northern Thailand. Two new species, and , are described. This genus is distinguished from other Baetidae by abdominal segment I, bearing a pair of enlarged, ventrally oriented single gills, covering abdominal sternites II-V; other gills have normal size and are dorsolaterally oriented.
View Article and Find Full Text PDFA new species of ephemerellid mayfly, , is described based on larvae collected in a stream from Nan Province, Thailand. This new species is classified in the complex of the genus based on morphological and COI phylogeny evidence. The new species is closely related to (Uéno, 1928) and Martynov, Selvakumar, Palatov & Vasanth, 2021 based on body colour pattern.
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