158 NEW: YORK STATE MUSEUM 
internally with a notch at the basal third, narrowly rounded; ventral 
plate rather long, broad, deeply and broadly emarginate, the lobes 
widely separated, narrowly rounded; style short, stout, broadly 
rounded. 
Female. Length 3 to 4mm. Antennae nearly as long as the body, 
sparsely haired, fuscous yellowish; fourteen segments, the fifth with 
a stem about one-third the length of the subcylindric basal enlarge- 
ment, which latter has a length twice its diameter; terminal seg- 
ment produced, with a length three times its diameter and apically 
with a short, stout process swollen basally. Palpi; first segment 
subquadrate, the second a little longer, stouter, the third fully twice 
the length of the second, rather stout, the fourth as long as the 
third. Mesonotum dark brown, the submedian lines fuscous yel- 
lowish. Scutellum and postscutellum fuscous yellowish. Abdomen 
dark reddish. Halteres yellowish transparent. Legs fuscous 
yellowish. Ovipositor short, the terminal lobes narrowly oval, with 
a length twice the width. Otherwise nearly as in the male. 
Described from females reared from resin masses on hard pine in 
association with a male, which latter compared very closely with 
Osten Sacken’s type in the Museum of Comparative Zoology. This 
female is not readily separated from that of Retinodiplosis 
inopis O.%., though the latter, judging from specimens reared 
in the bureau of entomology at Washington, is a larger and darker 
form and differs from the species under consideration by deserting 
the pitch prior to pupation. 
Parasites. This little insect in spite of its passing a large portion 
of its existence within pitch masses, is subject to parasitic attack. 
Miss Eckel, referred to above, has succeeded in rearing three species, 
as follows: Syntasis diplosidis Eckel, Polygnotus 
pinicola Ashm., and another belonging to the genus Eupelmus. 
This midge can hardly be considered of much economic import- 
ance, yet we have observed trees which were seriously weakened by 
an excessive flow of pitch inhabited largely by the larvae of this 
species, and we are therefore inclined to believe that in such cases 
the flow caused by the larvae may seriously weaken a tree. 
Retinodiplosis taxodii Felt 
1916 Felt, E. P. Ent. News, 27:415-17 
1918 ————_ N.Y. State Mus. Bul. 200, p. 19 
A number of midges tentatively referred to this genus were reared 
April 27, 1916, by George W. Barber, Charleston, Mo., from cones 
of bald cypress, Taxodium distichum, the larvae occur- 
ring in thick-walled somewhat spongy monothalamous galls 5 to 7 
