I'liicnopsiDDA. 153 



Genus TRICHOPSIDEA, Westiv. 



Irzchopsidea, Westwood, Trans. Eiit. Soc. Lond. ii, p. 151, pi. xiv 

 (1836) ; Macquart, Dipt. Exot. ii, pt. 1, p. 397, pi. iii, fig. 1 

 (1840);* WaudoUeck, Eat. Nach. xxiii, p. 250 (ISdJ). 



Genotype, Trichopsidea asstracea, AVestw. ; by original desig- 

 nation. 



Of the normal Nemestrinid type ; the species smaller than 

 those of Atriaclops, with exceptionally long wings, allied to 

 TricJiophthalina and Metjistorhynclius. Three ocelli ou a small 

 conical tubercle ; epistome (Estrid-like, mouth-parts very reduced 

 and indistinct, n)outh itself very rudimentary ; abdominal seg- 

 ments puffed up ; genitalia in male clubbed ; $ unknown. First 

 and last tarsal joints each as long as the other three together. 

 Auxiliary and Jst longitudinal veins apparentl}' united until 

 beyond middle of wing, the former then turning up to costa rather 

 suddenly; upper branch of .'Jrd vein turned up suddenly, meeting 

 2nd vein about its middle : both branches of 4th vein appai-ently 

 united at tip of discal cell, upper branch either single or, if forked, 

 the lower prong may consist also of the tips of both the lower 

 branch of the 4th vein and upper branch of the 5th. If this 

 reading of the veins be correct there is a somewhat long posterior 

 cross-vein. Anal cell open, axillary vein and squamoe absent. 



llange. Except dohrni from the Andamans and Sumatra, the only 

 other known species (cestracea, Westwood) is from Australasia. 



120. Trichopsidea dohrni, Wand. 



'Trichopsidea dohrni, Wandolleck, Ent. Nach. xxiii, p. 25], figs. 7,8 

 (1897); Lichtwardt, Deut. Eut. Zeits. p. 648 (1909). 



S . Ground-colour I'eddish brown, with not very reddish- 

 yellow hairs. Head rather broader than thorax, shining golden 

 browi» ; eyes contiguous below vertex, upper facets much larger 

 than lower ones; three yellowish-brown ocelli on prominent 

 vertical tubercle, with black and reddish-brown hairs : epistome 

 ffistrid-like, with thick i-eddish-brown pubescence ; antenna? 

 S-jointed, 3rd joint rod-shaped, with undulating outline; at tip 

 with some ver_v short fine pellucid hairs ; mouth-opening indistinct. 

 Thorax brown, witli fine velvet-like tomentum, showing several 

 darker and lighter indistinct longitudinal stripes ; in front and at 

 sides with long thick reddish-yellow pubescence ; scutellum pale 

 brown, anterior margin darker ; squamae absent ; halteres greenish 

 yellow. Winffs pale yellowish brown, with six clear-cut hyaline 

 spots, which in certain liglits show a pearly lustre; 1st longi- 

 tudinal vein present ; anal vein absent. Abdomen yellow, with 

 velvet tomentum; 1st segment pale yellowish, 2nd with a pale 



* Macquart's figure shows the broad elongate-conical labnim ; the longer, 

 ■concave, round -tipjied labium ; and tlie long filamentous organs, all as 

 described by Westwood, wbo assumed tbe latter to be "analogous to palpi " 

 and stated tbat tlie nioutii was rudimentary and concealed. Wandolleck also 

 describes tbe mouth as rudimentary. 



