210 EUCOELA CRASSICOENIS. 



smoky tinge. In the $ the hind tibiaa are sometimes 

 piceous or more or less blackish. 



It is doubtful if this is scutellaris, Htg., although 

 on the whole it agrees fairly well with his description 

 as far as it goes : Niger ; mandibulis fuscis ; anten- 

 narum flagello, $ fusco-nigro, ? fusco-rufo ; trochan- 

 teribus, geniculis, tibiis tarsique rufis, tibiis prosticis 

 plus minus fuscis ; alis hyalinis. It is possible that 

 Hartig has mixed up two species, for the above de- 

 scription is supplemented in vol. iii by neuris crassis, 

 nigris ; nervo cubitali usque ante alarum apicem con- 

 spicuo. Alee subfumatse pilis longioribus conferte 

 vestitse. Giraud's scutellaris is also somewhat doubt- 

 ful, as he confines his description mainly to colour, 

 the length of the antennaB and of their joints not 

 being indicated. Thomson's ocotoma is evidently a 

 different species, it differing from the species here 

 described in the antennaB being of the length of the 

 thorax. 



Bred by Westwood from the tumours on turnips 

 formed by Ocyptera brassicaria. 



Commonly distributed. 



17. EUOOELA CRASSICOENIS. 



PI. XII, fig. 4. 



Trvblioarapha crassicomis, Cam., Mem. Lit. Phil. Soc. Man., ii 



(4), 64. 



Black ; the flagellum and legs red ; the coxae, the trochanters above, 

 and a line on the upper side of the femora towards the base, black ; 

 wings hyaline, the nervures dull testaceous. Antennae fully one-half 

 longer than the head and thorax united ; the third joint one-fourth 

 longer than the fourth, which is as long as the fifth ; the 8-jointed club 

 abrupt, the sixth joint as long as the seventh and equal in length to it ; 

 moniliform. Scutellum rugose at sides and apex ; the basal fovese deep 

 and wide. Metapleurae densely covered with griseous hair. Abdomen 

 lenticular, compressed laterally, longer than the head and thorax 

 united, piceous towards the base and apex ; the hair-fringe moderately 

 broad, brownish, griseous at the apex. The first abscissa curved, fully 

 one-half of the length of the second, which is also curved, and three- 

 fourths of the length of the third, which is straight ; the cubitus reaches 

 quite close to the apex of the wing. 



Length 4| mm. 



