PHILIPPINE DIPTERA, II 9 



yellowish spot between the middle and hind coxae, of which the 

 author does not speak; the collar shows a grayish spot in the 

 middle ; the wings show a trace of a yellowish tinge at base. 



Key to the Philippine species of the genus Pselliophora Osten Sacken. 



The genus Pselliophora seems to be rich in endemic Philippine 

 species, some of which are very beautiful insects and are similar 

 in general facies and coloration to some endemic species of the 

 genus Eriocera. They may be distinguished as follows : 



a 1 . Tibise with a white basal ring; fourth posterior cell rather long, not 



much broader at base than at tip. 

 ft 1 . Wings uniform black or blackish; head brown; thorax entirely 



black _ dolens O. S. 



6*. Wings brown, with a white spot in the middle. 

 c 1 . Scutellum black. 



cf. Collar entirely black or with only a grayish middle spot; femora 

 black at base; abdomen with a single yellow band. 



suspirans 0. S. 



cf. Collar with a broad white spot in the middle; femora broadly 

 yellow at base, at least those of the hind pair in the female; 

 third and fourth abdominal segments with yellow spots. 



suspirans hilaris var. nov. 

 c*. Scutellum yellow; femora with yellow base; abdomen with segments 



2 to 4 reddish yellow; genitalia black idalia O. S. 



a 1 . Tibiae without white basal rings; wings uniformly blackish, with the 

 fourth posterior cell short, twice as broad at base as at end; species 

 of greater size. 



e 1 . Thorax and legs entirely black praeflca sp. nov. 



e a . Thorax and legs partly orange-yellow tripudians sp. nov. 



105. Pselliophora suspirans hilaris var. nov. 



Very like P. suspirans, but distinguished by the more whitish 

 than yellowish thoracic markings and by the more extended, 

 whitish abdominal pattern. 



Male and female. Length of body, 12 to 13 millimeters; of 

 wing, 12 to 13. Rostrum without brown spot in front. Collar 

 with a broad whitish spot toward the middle. Pleurae with a 

 rounded whitish spot between the last two pairs of coxae. Scu- 

 tellum black ; mesophragma with a less distinct yellowish spot on 

 each side. Halteres black, with the stalk yellowish toward the 

 base. Abdomen with the pale crossband on the second seg- 

 ment as in P. suspirans, but besides with a broad yellowish band 

 on the hind borders of third and fourth (in the male narrowly 

 interrupted in the middle, in the female divided into two spots) ; 

 also a smaller yellow spot on each side of fifth segment. On the 

 venter all the segments after the second one with a broad yellow 

 band at the hind border or a broad spot on each side; last seg- 



