REPORT OF THE STATE ENTOMOLOGIST 1918 149 
Lesiodiplosis spiraeafolia Felt 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 410 
1918 ———— N.Y. State Mus. Bul. 200, p. 133 
The pale yellowish male was reared August 23, 1906 from a thick- 
ened leaf fold on meadow sweet, Spiraea tomentosa, 
collected at Albany. 
Male. Length 1 mm. Antennae a little longer than the body, 
rather thickly haired, brown, yellowish basally; fourteen segments, 
the fifth with stems three and one-half and thrice their diameters, 
respectively; the distal enlargement pyriform, with a length one- 
third greater than its diameter; terminal segment, distal enlarge- 
ment with a length two and one-half times its diameter, obtuse. 
Palpi; first segment subquadrate, the second with a length three 
times its width, the third as long as the second, more slender, the 
fourth slightly longer than the third, somewhat dilated. Face pale 
yellowish. Mesonotum pale yellowish. Scutellum and_postscu- 
tellum a little lighter than the pale yellowish abdomen. Wings 
subhyaline, faintly spotted, costa pale straw. Coxae pale yellowish; 
femora and tibiae brown, the tarsi lighter. Genitalia; basal and 
terminal clasp segments long, slender; dorsal plate deeply and 
triangularly emarginate, the lobes narrowly rounded; ventral plate 
long, broadly rounded; style long, slender. Type Cecid. 760. 
Lestodiplosis triangularis Felt 
1907 Felt, E. P. N. Y. State Mus. Bul. r10, p. 138; separate, p. 42 
(Cecidomyia) 
1908 ——— N. Y. State Mus. Bul. 124, p. 410 
LOO Ottawa Nat. 22240 
1918 ———— N. Y. State Mus. Bul. 200, p. 194 
This species was reared August 26, 1906 presumably from an 
2 
elongate, brown, blistered area on the leaves of Solidago : 
canadensis taken at West Lebanon, N. Y., in August. 
Male. Length t mm. Antennae longer than the body, sparsely 
haired, brown; fourteen segments, the fifth with stems three times their 
diameters, the distal node- with a length greater than its diameter; 
terminal segment with the distal enlargement prolonged, sub- 
cylindric, the apical fourth subconical. Palpi; the first segment 
short, suboval, the second twice the length of the preceding, stout, 
the third a little longer and more slender than the second, the 
fourth a little longer and more slender than the third. Face 
yellowish. Mesonotum brownish yellow, submedian lines obscure. 
Scutellum reddish. Abdomen brownish yellow. Wings subhyaline, 
indistinctly spotted, costa brown. Halteres subhyaline. Coxae 
white; femora brown, paler beneath; tibiae lighter than the femora; 
tarsi brown; claws slender, strongly curved at the distal fourth. 
Genitalia; basal clasp segment long, slender; terminal clasp seg- 
ment slightly swollen basally; dorsal plate broad, deeply and 
