Xylocoris Dufour, 1831

Yamada, Kazutaka, Yasunaga, Tomohide, Artchawakom, Taksin & Sers, 2013, The genus Xylocoris found from plant debris in Thailand, with description of a new species of the subgenus Arrostelus (Hemiptera: Heteroptera: Anthocoridae), Acta Entomologica Musei Nationalis Pragae 53 (2), pp. 493-504 : 494-495

Genus Xylocoris Dufour, 1831

Diagnosis. Readily recognized by the following characters: body oval to elongate oval, shiny on dorsum; pronotum smooth with stout, long corner setae; ostiolar peritreme wide, curved anteriorly in middle, almost or completely reaching anterior margin of metapleura; meso- and metatibiae bearing stout, long spines along predominant part, apically with developed fossula spongiosa; male with a reduced endosoma; female with a peculiar type of conical cell structure in seminal conceptacles.

Remarks. Xylocoris is a single genus in the tribe Xylocorini and can be distinguished from other known genera of the family Anthocoridae by the meso- and metatibia generally with stout, long spines, highly developed fossula spongiosa on protibia much larger than those of mesotibia, and wide ostiolar peritreme curved anteriorly in middle and almost or completely reaching anterior margin of metapleuron. In addition, dorsal integumentary copulation on abdomen is unique within the Anthocoridae . Four subgenera, Arrostelus Kirkaldy, 1906 , Proxylocoris Carayon, 1972 , Stictosynechia Reuter, 1884 , and Xylocoris , are placed in the genus ( CARAYON 1972b).