A new species from southwestern China of Clematoscenea (Psocoptera: Psocidae), with a key to known species

摘要

Clematoscenea spinosus sp. n. is described and illustrated as the second species of this genus from China, and an English redescription of C. yunnanica Li is provided. Updated keys are given to the known species, together with distributional data. Enderlein (1907) erected Clematoscenea with Psocus lemniscatus Enderlein from Java as type species. The genus was distinguished from Psocus Pearman by having fore wing vein M_3 parallel to Cula, with cell M_3 very narrow and elongate. Clematoscenea was placed in tribe Cerastipsocini as a subgenus of Cerastipsocus by Roesler (1944). Without male information, this assignment was presumably made on the basis of female antennal and genitalic characters. Roesler distinguished Clematoscenea from Cerastipsocus and Sigmatoneura (another subgenus of Cerastipsocus) by having a smaller angle of radial fork branches as well as a narrower cell M_3. New (1978) described a female specimen of C. lemniscatus from Malaysia (subsequently renamed C. newi Smithers & Thornton), and discussed the potentially generic status of Clematoscenea. He pointed out that Clematoscenea was very similar to Psococerastis and Cerastipsocus in female genitalic characters, but the narrow cell M_3 distinguished it from those two genera. Smithers & Thornton (1981) described eight species of Clematoscenea from New Guinea regions and Clematoscenea has since then been considered as a distinct genus.