THICHOPSIDEA. 153 



Genus TRICHOPSIDEA, Westw. 



Trichoptidea, Westwood, Trans. Ent. Soc. Lond. ii, p. 151, pi. xiv 

 (183G) ; Maequart, Dipt. Exot. ii, pt. 1, p. 397, pi. iii, fig. 1 

 (1840);* Wandolleck, Ent. Nach. xxiii, p. 250 (1897). 



GENOTYPE, Trichopsidea cestracea, Westw. ; by original desig- 

 nation. 



Of the normal Nemestrinid type ; the species smaller than 

 those of Atriadopz, with exceptionally long wings, allied to 

 Triclioplitlialma and Meyistorliynclius. Three ocelli on a small 

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

 and indistinct, mouth itself very rudimentary ; abdominal seg- 

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

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

 Auxiliary and 1st longitudinal veins apparently united until 

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

 suddenly ; upper branch of 3rd vein turned up suddenly, meeting 

 2nd vein about its middle; both branches of 4th vein apparently 

 united at tip of discal cell, upper branch eitlier 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 squamae absent. 



llanye. Except dolirni from the Andamans and Sumatra, the only 

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



120. Trichopsidea dohrni, Wand. 



Trichopsidea dohrni, Wandolleck, Ent. Xacli. xxiii, p. 251, figs. 7, 8 

 (1897) ; Liclitwardt, Deut. Ent. Zeits. p. 648 (1909). 



3 . Ground-colour reddish brown, with not very reddish- 

 yellow hairs. Head rather broader than thoi-ax, shining golden 

 brown ; 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 

 (Estrid-like, with thick reddish-brown pubescence ; antennae 

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

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

 Thorax brown, with 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 ; squama3 absent ; halteres greenish 

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

 spots, which in certain lights 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 elongale-conical labrum ; the longer, 

 concave, round-tipped labium ; and the long filamentous organs, all as 

 described by Westwood, who assumed the latter to be "analogous to palpi" 

 and stated that the mouth was rudimentary and concealed. Wandolleck also 

 describes the mouth as rudimentary. 



