Four new species of caddisflies (Trichoptera: Polycentropodidae, Psychomyiidae Hydropsychidae, Odontoceridae) from Khao Nan and Tai Rom Yen National Parks, southern Thailand Author Suwannarat, Nannaphat Author Malicky, Hans Author Laudee, Pongsak text Zootaxa 2020 2020-06-19 4801 3 577 583 journal article 10.11646/zootaxa.4801.3.10 1175-5326 3904666 2F87D690-70BF-4C6E-AEBB-50820C22DBAF Eoneureclipsis chinachotiae n. sp. Malicky & Laudee Figs. 2 A–2C Type Material. Holotype male ( PSUNHM ). Thailand , Tai Rom Yen National , Dad Fah waterfall 2, 8 o 50’N, 99 o 30’E , altitude 960 m , 22.iv.2018 , leg. Nannaphat Suwannarat. Paratypes : 3 males from the same site or from sites nearby, altitudes 911–1100 m , collected on 22.iv.2018 ; 6 males from Kao Nan National Park , altitude 1147–1263 m , collected on 7.iv.2018 and 19.x.2018 ; all leg. Nannaphat Suwannarat ( PSUNHM ) . Etymology. The species is dedicated to Prof. Dr. Pavinee Chinachotiae, who was Dean of Faculty of Agroindustry, Prince of Songkla University, Hat Yai Campus. Description. Body and wings unicolorous yellowish brown, eyes and genital structure dark yellowish brown. Length of each forewing 7–9 mm (n = 10). Male genitalia ( Figures 2 A–2C). Tergum IX in lateral view produced posteriorly into broad triangle, rounded posteriorly; sternum IX rectangular with prominent triangular projection on each side anteriorly, posterior end of sternum IX rounded in lateral view ( Fig. 2A ); sternum IX in ventral view somewhat rectangular with broad and shallow incision posteriorly ( Fig. 2B ). Superior appendages club-shaped, slightly bent downward in lateral view ( Fig. 2A ). Intermediate appendages needle-like, long, pointed apically in dorsal view; in lateral view, intermediate appendages long, slender, curved downward, pointed apically ( Fig. 2A ). Inferior appendages each divided into two parts, basal segment somewhat triangular, apical segment banana-like and about twice as long as basal segment in lateral view; in ventral view, basal segments of inferior appendages trapezoidal and separated by deep incision mesoposteriorly, each with setose acute angle mesoposteriorly; apical segments each curved inward with stout black teeth on mesal edge, rounded posteriorly ( Fig. 2B ). Phallus hammer-like, curved downward with needle-like process apicodorsally ( Fig 2C ). Diagnosis. Male genitalia structures of this species are very similar to those of its congeners, which are constructed in the same pattern, but differences are seen in the details and form of the phallus and can easily be seen in by comparison with figures of the phalli of other species ( Figs. 2 D–2N). The new species is similar to E . akrichalakchmi Schmid 1972 from the state of Manipur , in that the distal part of the phallus is shorter than in most species ( Fig. 2L ), and the inner edge of each inferior appendage has a sub-basal hump. However, in E . chinachotiae n. sp. , the basal two-thirds of the phallus is slender and sinuate; the distal part has a dorsal hump with a very slender spine on its caudal edge and is bent downward and dilated more than for E . akrichalakchmi .