Ochyroceratidae Fage, 1912

Liu, Chang, Li, Fengyuan, Li, Shuqiang & Zheng, Guo, 2017, Five new genera of the subfamily Psilodercinae (Araneae: Ochyroceratidae) from Southeast Asia, Zoological Systematics 42 (4), pp. 395-417 : 397

Family Ochyroceratidae Fage, 1912

Key to the genera of the subfamily Psilodercinae (males only).

1. Cheliceral promargin with 1–2 large teeth and a lamina; maxillae mesodistally rounded....................................................................2 Cheliceral promargin with a dentoid lamina; maxillae mesodistally acuminate................................................................................... 4

2. Thoracic fovea a deep groove extending to posterior margin of carapace; cymbium with lateral protrusion bearing lanceolate apophysis and three slightly curved serrated bristles distally; bulb with embolus and conductor widely separated basally .................. .................................................................................................................................................................................. Althepus Thorell Fovea short or a simple depression; cymbium lacking lateral protrusion and lanceolate apophysis; bulb with conductor present or absent, if present embolus and conductor not widely separated basally...............................................................................................3

3. Palp with retrolateral protrusion on tibia or cymbium; conductor present ......................................... Leclercera Deeleman-Reinhold Palp without retrolateral protrusion on tibia or cymbium; conductor absent........................................ Luzonacera Li & Li , gen. nov.

4. Cymbium without apical protrusion..................................................................................................................................................... 5 Cymbium with apical protrusion.......................................................................................................................................................... 6

5. Embolus long; conductor present or absent, if present then separated basally from embolus; cheliceral retromargin with one small tooth ....................................................................................................................................................... Sinoderces Li & Li , gen. nov. Embolus short; conductor absent; cheliceral retromargin with two transparent small teeth.................. Thaiderces Li & Li , gen. nov.

6. Clypeus medially with trifurcate projection; conductor present; cheliceral retromargin with two small teeth....................................... ............................................................................................................................................................. Relictocera Li & Li , gen. nov. Clypeus medially with horn-shaped projection or unmodified; conductor present or absent; cheliceral retromargin with one or two small teeth ............................................................................................................................................................................................7

7. Palpal tibia deflected prolaterally; bulb with complex conductor ........................................................................................................8 Palpal tibia not deflected prolaterally; conductor otherwise................................................................................................................. 9

8. Embolus slender; abdomen oriented nearly perpendicular to thorax; cheliceral retromargin with two small teeth................................ ........................................................................................................................................................................ Flexicrurum Tong & Li Embolus short; abdomen oriented in line with thorax; cheliceral retromargin with one small tooth ... Qiongocera Li & Li , gen. nov.

9. Conductor present or absent, if present then embolus and conductor not separated basally .................................... Psiloderces Simon Conductor present or absent, if present then separated basally from embolus ........................................................... Merizocera Fage