374 DIPTERA OF AUSTRALIA, 



Sub-genus Cecidomyia, Loew. 

 Cecidomyia, Loew, I.e., p. 61. 



a. Flagellar joints 0/ the antennce pedicelled in $ , and sessile in ? . 

 432. Cecidomyia ACACiiE-LONGiFOLi.E, sp.n, (PI. xvi., figs. 1-lb.) 



^.—Length of antennse 0-060 inch ... 1-54 millimetres. 



Expanse of wings 0-090x0-040 ... 2-27xl-01 



Sizeof body 0-105 x 0-020 ... 2-67x0-50 



9. — Length of antennae 0-037 inch ... 0-90 millimetre. 



Expanse of wings 0-105 x 0-042 ... 2-67 x 1-06 



Sizeof body 0-110x0-027 ... 2-79x0-68 



Antennae black or dark brown, 2- + 16-jointed in both sexes; 

 in (J flagellar joints longer than broad, about twice the length of 

 pedicels, verticils greyish, moderately dense, long ; in 9 flagellar 

 joints cylindrical, sessile, the basal ones not quite twice as long as 

 broad, verticillate -pilose. Front densely covered with whitish or 

 pale yellowish scales. Hypostoma and palpi pale brownish or 

 brownish-yellowish with minute white hairs. Thorax black or 

 dark brown, opaque, with two dense longitudinal rows of golden- 

 yellow hairs from humeri to scutellum ; also lateral borders with 

 golden-yellow hairs; pleurae and pectus deep brown; scutellum 

 and metanotum reddish ferruginous-brown, the former with yellow 

 hairs ; origin of wings reddish or ferruginous-brown ; a small 

 patch of white scales anterior to the origin of the wings. Hal teres 

 ochraceous, reddish or ferruginous, the club microscopically 

 pubescent. Abdomen in the ^ ochraceous, in the $ reddish or 

 ferruginous ; superior segments densely covered with black or 

 dark brown scales, the posterior margins of segments sparingly 

 beset with white hairs, and venter with white squamose pubes- 

 cence ; genitals ochraceous or brownish-ochreous, covered above 

 with dark scales and white pubescence. Legs slender. Coxse 

 brownish or brownish-ochreous, with white pubescence. Femora 

 pale yellow or ochreous at base, clothed with white scales, with 

 black scales above and at the apex. Tibiae and tarsi covered with 



