Notes on Smetanabatrus from Southeast Asia (Coleoptera: Staphylinidae: Pselaphinae) Author Yin, Zi-Wei Department of Biology, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China. Author Cuccodoro, Giulio Muséum d'histoire naturelle, C. P. 6434, CH- 1211 Genève 6, Switzerland. E-mail: gulio. cuccodoro @ ville-ge. ch text Revue suisse de Zoologie 2018 2018-09-28 125 2 245 248 journal article 3942 10.5281/zenodo.1414213 2f3fb2f9-a5a8-4ca1-b481-13c0c2e949da 0035-418 1414213 Smetanabatrus ghecu Yin & Li, 2015 Smetanabatrus ghecu Yin & Li, 2015: 377 . Type locality: Carin Asciuii Ghecù , southern Shan State , central Myanmar . Material examined: MHNG-ENTO-00013302; ♀ ; Thailand , Chiang Mai , Doi Suthep; 3. 87; coll. de Rougemont ; “ Smetanabatrus ghecu Yin & Li 2015 , Det. Yin 2018” . Distribution: Myanmar (southern Shan State ); Thailand ( Chiang Mai ), new country record ( Fig. 2 ). Comments: Given the similar body size ( 3.38 mm ) and proportions, roundly broadened inner and outer margins of the maxillary palpomere IV, presence of a reversed ‘U’-shaped sulcus on the vertex, and coarsely punctate head and pronotum, the present specimen can be readily identified as conspecific with the population from central Myanmar . The present record expands the distributional range of this species some 220 km to the southeast from the type locality. Key to males 1 Vertex lacking reversed ‘U’-shaped sulcus connecting foveae ( Fig. 1B ); maxillary palpomere IV distinctly lobed on inner margin ( Fig. 1C ; Yin & Li, 2013 : fig. 2A); protibia slightly broadened on outer margin ( Fig. 1A ; Yin & Li, 2013 : fig. 1A), metatibia strongly dilated laterally on apical portion ( Fig. 1A, 1E ; Yin & Li, 2013 : figs 1A, 2C) .....................................................................................................................................................................................2 - Vertex with distinct reversed ‘U’-shaped sulcus connecting foveae ( Yin & Li, 2015 : fig. 1); maxillary palpomere IV with both outer and inner margins roundly expanded ( Yin & Li, 2015 : fig. 2E); protibia slightly expanded on inner margin ( Yin & Li, 2015 : figs 1A, 2D), metatibia unmodified. Distribution: Myanmar , Thailand ( Fig. 2 ) ....... ..................................................................................................................................................................... S . ghecu 2 Protrochanter simple, profemur with large ventral spine ( Yin & Li, 2013 : fig. 2B); tergite 1 (IV) with large lateral expansions and broad, deep median cavity, tergites 2-3 (V-VI) strongly raised at middle ( Yin & Li, 2013 : figs 1A, 2D-E). Distribution: East Malaysia ( Fig. 2 ) ............................................................................................ S . kinabalu - Protrochanter with large, flat protuberance on ventral margin, profemur simple ( Fig. 1D ); tergite 1 (IV) with median patch at basal half, submedial area moderately raised, tergites 2-3 (V-VI) unmodified ( Fig. 1 F-G). Distribution: West Malaysia ( Fig. 2 ).................................................................................................................... S . loebli sp. nov.