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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
ment with a length twice its diameter and apically a short, knob-like process. Palpi; 
first segment irregularly oval, stout, the second a little shorter, more slender, the 
third a little longer than the second, and the fourth slender, more than twice the 
length of the third. Mesonotum, scutellum and postscutellum yellowish brown. 
Abdomen yellowish orange. Halteres whitish transparent, legs mostly pale straw, 
claws of the hind legs at least, long and moderately stout, strongly curved, the pul- 
villi a little longer than the claws. Ovipositor when extended nearly as long as the 
body, distinctly chitinized, subaciculate. The distal portion is rather stout, strongly 
striate and apically with approximate, triangular, finely dentate lobes, each bearing 
at the distal fourth two diverging spike-like spines. Type Cecid. a 2822. 
Mycodiplosis packardi n. sp. The male of this species was reared 
June 20, 1918, from a white pine ( Pinus strobus) branch one and one- 
half inches in diameter infested with Parharmonia pini Kell. The 
exuded masses of pitch were inhabited by midge larvae, some of which 
remained in the pitch, transformed therein and produced adults de¬ 
scribed as Retinodiplosis albitarsis n. sp. There were other larvae 
which emerged from the pitch mass and formed cocoons either on the 
twigs or the bottom of the tree and it is apparently from these other 
larvae that this species was reared. The habit of deserting the pitch 
and making cocoons upon the food plant appears to be identical with 
that described for Cecidomyia pini-rigidce Packard and there is a 
possibility that the two are identical, though this cannot be determined 
with the data available. 
Cocoon. Length 5 mm., diameter 2 mm. Moderately stout, mostly indistinctly 
rounded, the pointed apex presenting the appearance of a rather short, stout, waxy 
process. 
Male. Length 3 mm. Antennae probably nearly as long as the body, rather 
thickly haired, fuscous yellowish, fourteen segments, the fifth almost trinodose with 
stems one and one-fourth and twice their lengths respectively. Basal enlargement 
globose, the distal enlargement, strongly constricted near the middle with a length 
almost twice its diameter, the loops of the cireumfili moderately numerous and with a 
length greater than the diameter of the enlargement. Terminal segment having the 
basal portion of the stem with a length one-half greater than its diameter, the distal 
enlargement so strongly constricted near the basal third as to suggest two partly ad¬ 
herent spheres and apically a short stem bearing a small subglobose appendage. 
Palpi; first segment quadrate, the second with a length twice the first, the third 
slender and with a length one-half greater than the second and the fourth as long as 
the second, slender. Mesonotum dark brown, with moderately thickly haired sub¬ 
median lines. Scutellum and postscutellum dark brown. Abdomen sparsely haired, 
dark brown. Wings subhyaline, the membrane thickly clothed with fuscous hairs. 
Halteres yellowish basally, fuscous apically. Coxse fuscous yellowish. Legs mostly 
dark brown. Claws long, slender, rather strongly curved, the anterior unidentate, 
the pulvilli about one-half the length of the claws. Genitafia; basal clasp segment 
rather long, stout; terminal clasp segment a little longer than the basal, slender. 
Dorsal plate short, very deeply and triangularly emarginate, the lobes narrowly 
triangular and sparsely setose apically. Ventral plate moderately long, broad, 
deeply and roundly emarginate, the lobes rather broad, narrowly rounded apically 
and with a stout seta at the tip. Style long, stout, narrowly rounded apically. 
