Smetanabatrus ghecu Yin & Li, 2015

Yin, Zi-Wei & Cuccodoro, Giulio, 2018, Notes on Smetanabatrus from Southeast Asia (Coleoptera: Staphylinidae: Pselaphinae), Revue suisse de Zoologie 125 (2), pp. 245-248 : 247-248

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.

Figures

Fig. 2. Distribution of Smetanabatrus species. 1 – S. kinabalu, 2 – S. ghecu, 3 – S. loebli sp. nov. Circles are published records, squares represent new data.

Fig. 1. Smetanabatrus loebli male. (A) Dorsal habitus. (B) Head dorsum. (C) Anterolateral view of head, showing form of maxillary palpomere IV and ocular canthus. (D) Protrochanter and profemur. (E) Metatibia. (F) Lateral view of abdomen, showing projections on tergite 1 (IV) and sternite 3 (V). (G) Tergite 1. (H) Median projection of sternite 3, in ventral view. (I) Aedeagus, in ventral view. Scale bars: 1 mm in A; 0.2 mm in B-H, 0.1 mm in I. Abbreviations: ap – apical protuberance, mp – median projection, mp4 – maxillary palpomere IV, oc – ocular canthus, pa – patch, vp – ventral projection.