REPORT OF THE STATE ENTOMOLOGIST I907 4II 



ventral plate appears to be widely separated, the two lobes being 

 short, stout and roundly triangular [pi. 42, fig. 2]. The male is 3 

 mm long, the flagellate antennal segments are strongly trinodose, 

 while the claws are simple and the third vein unites with the margin 

 well beyond the apex. 



Type and sole species Cecidomyia orbiculata Felt. 



CLiNODiPLOsis Kieff. 



Members of this genus are small, yellowish species which may be 

 recognized by the simple claws, the quadriarticulate palpi, the lack 

 of a conspicuous lobe or spine on the basal clasp segment and by 

 the long, linear, narrowly rounded, ventral plate [pi. 42, fig. i]. 

 The species probably breed mostly in leaf galls, though C . cattle- 

 y a e was reared from the roots ofCattleyagigas. 



Key to species 



a Ventral plate long, slender, tapering slightly and narrowly rounded 

 apically 

 b Antennal segments with only two distinct enlargements, not trinodose 



c Abdomen dark brown, length .75 mm 



(Cecidomyia) rubrascuta Felt, C. 93 

 cc Abdomen yellowish brown, length i mm ; bred from leaves of scrub 



oak florida n. sp., C. 978 



hh Antennal segments more or less distinctly trinodose 



c Fifth antennal segment having the basal portion of the stem with 

 a length twice its diameter 



d Abdomen pale orange, length 1.5 mm 



(Cecidomyia) acernea Felt, C. 267 



cc Fifth antennal segment having the basal portion of the stem with a 



length ^ greater than its diameter 



d Abdomen yellowish, the segments banded posteriorly and partially 



near the middle with brown 



e Length 2.5 mm, 5th antennal segment stems with a length i^ 



and 3 times the diameters, distal node strongly constricted ; 



bred from globose gall on hickory 



(Cecidomyia) caryae Felt, C. 331, 1117 



ee Length 1.5 mm, 5th antennal segment stems with a length ij^ 



and 2^ times the diameters, distal node not strongly constricted 



(Cecidomyia) coryli Felt, C. 216 



aa Ventral plate long, slender, tapering distally 



h Dorsal plate rather long, triangularly emarginate, the lobes long and 

 narrowly triangular 

 c Abdomen pale yellowish or carmine, length i mm ; 5th antennal seg- 

 ment having the stems with a length 2^/^ and 4 times the diameters, 



respectively triangularis n. sp., C. 428, 499 



aaa Ventral plate long, rather stout, broadly rounded apically 

 h Dorsal plate short, the lobes truncate 



