Bryothinusa Casey, 1904

Ahn, Kee- Jeong & Jeon, Mi- Jeong, 2004, The Korean Species Of The Genus Bryothinusa Casey With Descriptions Of Two New Species (Coleoptera: Staphylinidae: Aleocharinae), The Coleopterists Bulletin 58 (1), pp. 29-35 : 29

Key to the Species of Bryothinusa Casey in Korea

1 Body size less than 2.0 mm; posterior margin of tergite X pointed ( Sawada 1971: Fig. 1N ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B. minuta Sawada

1 9 Body size more than 2.0 mm; posterior margin of tergite X not pointed - - - - - - - - - - - 2

2 Hind wings absent; sternites V–VII with many scattered pores - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B. koreana new species

2 9 Hind wings present; sternites V–VII without scattered pores - - - - - - - - - - - - - - - - - - - - - - - - - - - 3

3 Compound eyes small, 20 or fewer facets present; lateral sensilla of the labrum very large ( Sawada 1971: Fig. 3B ; spermatheca as in Fig. 18) - - - - - - B. nakanei Sawada

3 9 Compound eyes large, 30 facets or more present; lateral sensilla of the labrum normal; spermatheca as in Figure 5 - - - - - - - - - - - - - - - - - - - - - - - - B . gangjinensis new species

Figures

Figs. 1–6. Bryothinusa gangjinesis. 1) Labrum, dorsal aspect; 2) mandible, dorsal aspect; 3) lacinia, dorsal aspect; 4) spermatheca, dorsal aspect; 5) pronotum, dorsal aspect; 6) median lobe, dorsal aspect. Scale bars ¼ 0.1 mm.