118 NEW YORK STATE MUSEUM 
GIARDOMYIA Felt 
1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 405 
1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:287 
1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:59 
1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 230 
This genus is erected for certain species presenting marked dif- 
ferences from Octodiplosis Giard. It comprises a number of small, 
yellowish or reddish forms having the simple claws bent almost at 
right angles and usually somewhat enlarged subapically. The ventral 
plate is long, slender, slightly expanded apically and roundly emargi- 
nate, while the dorsal plate is short, triangularly emarginate and with 
the somewhat long lobes broadly rounded or truncate. The type 
species is G. photophila Felt (pl. 38, fig. 2, Bul. 124). 
Key to Species 
a Abdomen yellowish 
b Abdomen pale yellowish, length .75 mm, the fifth antennal segment 
having the stems two and one-half and three and one-half times their 
diameter; presumably reared from a pustulate gall on Mentha........ 
menthae Felt, C. a1578b, 536 
bb Abdomen fuscous yellowish, length 1 mm; fifth antennal segment having 
the stems three and four and one-half times their diameters...... 
noveboracensis Felt, C. 197x 
aa Abdomen reddish 
b Abdomen bright carmine, length 1 mm; fifth antennal segment having 
the stems three and four and one-half times their diameters.... 
photophila Felt, C. 323 
bb Abdomen bright red; terminal segments yellowish, length 1 mm; fifth 
antennal segments having the stems with a length three and three and 
one-half times their diameters, the ventral plate deeply and narrowly 
emarginate!|jerpices Jeune. Sees Dee tee emarginata Felt, C. 446 
bbb Abdomen deep reddish, length 1 mm; fifth antennal segment having the 
stems two and one-half and four times their diameters.............. 
hudsonica Felt, C. 200 
bbbb Abdomen dark reddish brown, length 1 mm; fifth antennal segment 
having the stems two and one-half and three and one-half times 
their diameters... 2. ..n(4. SUSE montana Felt, C. 325, 585 
Giardomyia menthae Felt 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 405 
1918 ——————__N. Y. State Mus. Bul. 200, p. 184 
This yellowish male was reared July 27, 1907, from mint, 
Mentha canadensis, bearing pustule-like stem galls collected 
at Karner¥ NS. 
Gall. Length 3.5 mm, diameter 2.5 mm. This is a pustule-like 
gall in the axil of the leaf and contains several whitish larvae. 
Larva. Length 1 mm, whitish. 
