330 NEW YORK STATE MUSEUM 



dd 3d vein uniting with the anterior margin at or near the 

 basal half 

 e Tarsi yellowish ; male antennae with 14 segments ; palpi 

 uniarticulate ; bred from whitish blister gall on Aster 



laevis 



(Choristoneura) laeviana Felt, C. ai287 

 ee Tarsi black 



/ Female antennae with 21 segments ; palpi biarticu- 

 late; bred from a lunate, j^ellowish, marginal blister 



gall on Solidago 



(Choristoneura) flavolunata Felt, 



C. ai430 

 // Female antennae with 16 segments ; palpi uniarticu- 

 late; bred from blister galls with pinkish aureola on 



Aster d i V a r i c a t a 



, divaricatan. sp., C. 31787 



NEOLASIOPTERA n. g. 



This genus is closel}^ allied in general appearance and habits to 

 Lasioptera, and is separated therefrom only by the fifth vein fork- 

 ing at the extreme base of the wing or by the sixth being entirely 

 independent of the preceding [pi. 34, fig. 8] . This character, while 

 not always determined with ease, affords a very good basis for 

 making a division, even though this latter may not be closely cor- 

 related with variations in habit. The female antennae may be com- 

 posed of from 17 segments in the case of N. celastri to 29 

 segments in N . v i b u r n i c o 1 a , while the males may have but 

 T2 segments as in N . squamosa to 23 in N . c o r n i c o 1 a . 

 As in the genus Lasioptera, there is frequently a variation of four 

 or five segments between the sexes and apparently following no law. 



The species of this genus, as in the case of Lasioptera, breed 

 mostly in subcortical stem galls on herbaceous and woody plants, 

 most of the forms producing distinct enlargements, though the 

 presence of N . h i b i s c i is indicated only by a somewhat gen- 

 eral enlargement of the stem. N. squamosa has been bred 

 from grass, presumably a stem gall, while N. v i t i n e a makes 

 a characteristic conical gall on the grape petiole. 



Key to species 



a Abdomen dark brown or black 



b Abdominal segments nearly unicolorous 



c Tarsi dark brown ; female antennal segments 17 



celastri n. sp., C. 598 



