REPORT OF THE STATE ENTOMOLOGIST I915 



151 



female, enlarged (ori- 

 ginal) 



setae so characteristic of Lasioptera, Dasyneura and their allies. 

 The flagellate segments of the female may have from 2 to 5 or 6 

 anastomosing circumfili, forming a more or 

 less irregular network on the face of the 

 segment, the more generalized species, C. 

 s i m p 1 a and C. connecta having, as 

 in the male, a somewhat well-developed 

 subapical band of long setae. Palpi com- 

 posed of 4 segments; the wings are of the 

 usual Asphondylid type; the claws are simple, 

 the pulvilli usually being shorter than the 

 claws. The genitalia are very characteristic, 

 the terminal clasp segment being short, 

 stout and curving to a broad, heavily 

 chitinized, denticulate apex; the dorsal and 

 ventral plate, as in Asphondylia are relatively Fig. 29 Cincticor- 

 small. The ovipositor is rather long, rel- ni a species. Fourth 

 atively stout, composed of a rather heavy, 

 tapering basal segment and a more slender 

 apical segment, peculiar on account of the 

 thickened chitin along its ventral margin, and apically provided 

 with a pair of small, setose lobes. This organ is distinctly more 

 generalized than the highly developed ovipositor of Asphondylia 

 and Schizomyia. 



This genus comprises, as our rearings show, mostly, if not entirely, 

 oak insects. The rather stout, yellowish or orange larvae winter 

 in the gall and prior to transformation escape therefrom, enter the 

 soil and spin a loose cocoon with particles of leaves or sand adhering 

 thereto. The adults in nature probably appear in early June at the 

 time the young oak leaves are developing. The galls, so far as we 

 know, are all confined to oak leaves, the more highly specialized 

 forms producing more or less thick- walled, sometimes compound 

 deformations of leaf tissues, while one at least of the generalized 

 forms lives in a relatively inconspicuous cell lying between the slightly 

 thickened epidermal layers. It is possible that further study will 

 result. in finding members of this genus inhabiting the leaves of some 



other plants. 



Key to species 



a Wings small (2.5 mm long or less) 

 b Wings relatively long and narrow 

 c Abdomen dark brown 



d Male; length 1.25 mm, scutellum reddish brown, fifth antennal 



segment with 10 to 12 circumfili 



transversa Felt, C. 53. 



