Five new genera of the subfamily Psilodercinae (Araneae: Ochyroceratidae) from Southeast Asia Author Liu, Chang College of Life Science, Shenyang Normal University, Shenyang, Liaoning 110034, China & Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar Author Li, Fengyuan Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Li, Shuqiang Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China & University of Chinese Academy of Sciences, Beijing 100049, China Corresponding author, E-mail: zhengguo @ synu. edu. cn Author Zheng, Guo College of Life Science, Shenyang Normal University, Shenyang, Liaoning 110034, China text Zoological Systematics 2017 42 4 395 417 http://dx.doi.org/10.5281/zenodo.4617038 journal article 4160 10.11865/zs.201717 935ddcb1-d943-4ee3-97bd-aa295badd9ac 2095-6827 5585652 286CFD9F-1456-4772-B3D5-8A13FF24A9F1 3.1 Genus Luzonacera Li & Li , gen. nov. Type species: Luzonacera chang Li & Li , sp. nov. Etymology. The genus name is a combination of “ Luzon ” (refers to Luzon, the Philippine Island) with the typical ending among genus names within this family. Gender is feminine. Diagnosis. The new genus is distinguished (together with Leclercera and Althepus ) from all other genera of Ochyroceratidae by the large size, the presence of a denticle on the cheliceral promargin and the rounded maxillae. It is distinguished from Leclercera and Althepus by the absence of a retrolateral protrusion on the tibia or cymbium of the male palp and by the absence of a conductor. Description. Cheliceral promargin with lamina and one denticle, retromargin with two denticles; male with swollen palpal tibia, cymbium with distal protrusion, palp lacking retrolateral tibial or cymbial apophysis, bulb pyriform, central part remarkably constricted, spiral whip-like embolus extending subapically, conductor lacking; female with two pairs of elongate, distally swollen spermathecae. Distribution. Philippines ( Rizal Province ). Species composition. Luzonacera chang Li & Li , sp. nov. , Luzonacera duan Li & Li , sp. nov.