194 NEW YORK STATE MUSEUM 



terminal segment slightly pro onged, irregularly subconic, the apex 

 narrowly rounded. Palpi; the first segment rather long, subquad- 

 rate, second much swollen at the basal third, irregular, the third 

 nearly twice the length of the second and the fourth a little longer 

 than the third. Face yellowish. Mesonotum reddish brown with 

 distinct lighter submedian lines ornamented with yellowish hairs, 

 posterior median area yellowish. Scutellum reddish brown with 

 sparse apical hairs, post scutellum and abdomen a slightly variable 

 reddish brown. Wings hyaline, costa pale yellowish brown. Hal- 

 teres yellowish transparent basally, carmine apically. Legs long, a 

 nearly uniform pale straw color; claws probably simple. Genitalia; 

 basal clasp segment stout, tapering; terminal clasp segment large, 

 strongly curved, excavated internally, with a conspicuous apical 

 spur. Dorsal plate broad, broadly emarginate, ventral plate ap- 

 parently represented by a pair of widely separated, strongly curved, 

 truncate lobes. Harpes short, stout, strongly chitinized, fused 

 basally, curving from the median line, distally broadly rounded and 

 with a heavily chitinized apex; style long, slender, strongly curved. 

 (Plate 7, figure 3). Type Cecid. 119. 



OLIGOTROPHIARIAE 



Members of this tribe may be distinguished by the third vein 

 being well separated from the anterior margin, the rather short, 

 cylindric antennal segments, usually stemmed in the male and the 

 simple claws, or with the claws at most minutely toothed. This 

 group comprises a large number of mostly good sized, usually red- 

 dish or reddish brown species. There is a marked tendency toward 

 reduction in the number of palpal segments, this being particularly 

 evident in the large genus Rhopalomyia, a natural group displaying 

 a marked fondness for the tender tissues of leaf and flower buds. 

 There is a great variation in the number of antennal segments, 

 there being a range of from 12 to 26 in both Phytophaga and 

 Rhopalomyia. Owing to variations in antennal, palpal, alar and 

 other structures, it is very difficult to establish the genera satis- 

 factorily. Two European genera, M i k i o 1 a Kieff. and Psec- 

 troscma Kieff., and the Brazilian Ulcia Rubs, are so insuf- 

 ficiently described or present so little modification that we have 

 been unable to give satisfactory diagnostic characters for their 

 separation from American genera. The genus Mikiola Kieff. is 

 evidently closely allied to the larger forms of Phytophaga 

 Rond. As understood by us we are unable to find satisfactory 

 characters for the separation of the two. It is admitted that our 



present grouping of species under Phytophaga, OligOtrOphuS and 



Tanetiella is no1 entirely satisfactory, though we question the wisdom 



