544 
PROCEEDINGS OF THE ACADEMY OF 
[Oct., 
The types occurred rather abundantly along a small woodland 
stream and were found commonly resting on the trunks of sugar 
maples, swarming out into the air at short intervals. The species 
occurred with the following crane-fly associates: 
Ormosia innocens, 0. nubila, 0. rubella, Erioptera septemtrionis^ 
Limnophila brevifurca, Adelphomyia minuta, Ula elegans, Pedicia 
conterminata and Tipula dejecta. 
Rhaphidolabis (Rhaphidolabis) rubescens sp. n. 
Head light silvery gray; mesonotum reddish, sparsely gray pruinose, 
with three indistinct brown stripes; abdomen yellowish brown, the 
hypopygium bright yellow; mngs nearly hyaline; cell Ri sessile; 
Rs arcuated, rather elongate; cell Ist M^ open by the atrophy of m; 
cell ilf 1 moderate. 
Male. — Length, 5.3-5.5 mm.; wing, 6.3-6.6 mm. 
Female. — Length 5.5-5.6 mm.; wing, 6.5-7 mm. 
Rostrum and palpi dark brown. Antennae with the basal segments f"^*^^ /^U^ Kl 
^yut,<^i,vm, brown, sparsely grayish pruinose; prsescutum with three indistinct 
brown stripes, lateral stripes less evident, median stripe narrowed 
behind and becoming indistinct at the suture; scutum with the lobes 
brownish gray, the median area dull reddish yellow; scutellum pale 
brownish yellow, gray pruinose; postnotum light reddish with a gray 
bloom. Pleura light reddish with a sparse gray bloom. Halteres 
pale, the knobs brown. Legs with the coxae and trochanters light 
brownish yellow; femora and tibiae brownish yellow, the latter a 
little darkened towards their tips; tarsi brown. Wings nearly 
hyaline, stigma very pale to indistinct, veins dark brown. Venation 
(Plate XXVIII, fig. 58): Sc long, ending at nearly midlength of ^2; 
distance between Sct and the origin of the sector about twice the 
length of the latter; Rs rather long, strongly arcuated, but not 
angulated; cell R^ sessile, sometimes broadly sessile; cross-vein r at 
the tip oi Ri] cell 1st Mi open by the atrophy of m; cell Mi present, 
about one-half as deep as cell M3. 
Abdomen pale yellowish browni, the lateral margins more yellowish, 
the hypopygium bright yellow. 
Habitat. — Northeastern United States. 
Holotype, cf , Simmons woods, Gloversville, Fulton County, New 
York, altitude 900 feet, June 22, 1916 (Alexander). 
Allotype, 9 , topotypic, June 12, 1916. 
Paratopotypes, 20 cf 9 , June 9, 1914; June 12 to 22, 1916. 
Type in the collection of the author. 
The ecological conditions under which this species lives have been 
