982 CHARLES PauL ALEXANDER 
are directed straight outward and finally downward. The eighth segment 
has a circle of four dorsal, four ventral, and two pleural spines, which 
are finely bifid at their tips. The pupa is green, as is the larva, with similar 
angular dorsal stripes. 
This is the only tipuline larva known to the writer with five lobes sur- 
rounding the spiracular disk. This feature is the more remarkable when 
this larva is compared with that of Oropeza, apparently closely related 
but with a normal tipuline appearance. The immature stages of other 
species of Dolichopeza and related genera will be of interest. 
The resting positions of Dolichopeza are described on page 713 of this 
paper, and the striking dissimilarities to Oropeza noted. It may be that 
Oropeza is not so close to Dolichopeza as has been believed. Osten Sacken 
(1886:157) describes the mating of a European Dolichopeza, presumably 
D. albipes, as follows: 
T had occasion to observe the copula (in Heidelberg, July 26); the female was hanging down 
from some support to which it held on by its front legs; it bore the whole weight of the male, 
who was fastened to it merely by the forceps, hanging head downwards, with his legs stretched 
out. I have seen Bittacomorpha copulate in the same manner. 
Genus Oropeza Needham (Gr. mountain + feet) 
1908 Oropeza Needm. 28d Rept. N. Y. State Ent. (1907), p. 211. 
Larva.— Form somewhat depressed. A strong tubercle on sides of -body before spiracular 
disk. Spiracular disk surrounded by six lobes, the four dorsai ones slender, the ventral 
pair blunt. Anal gills blunt. Head capsule of the tipuline type. Mandible blunt, with about 
seven teeth. Hypopharynx five-toothed. Mentum seven-toothed. Coloration dark green. 
Pupa.— Pronotal breathing horns elongate-cylindrical,- slender. Mesonotum with a 
slightly elevated triangular area on either side of mid-dorsal line. Leg sheaths ending about 
on a level, or fore legs a little longer. Abdominal segments with two stout pleural spines; 
posterior annuli before margin with a transverse row of twelve or fewer spines. 
Oropeza is a genus of crane-flies including ten described species, all 
of which occur in eastern North America with the exception of three 
Japanese forms. The flies are common beneath dark culverts and bridges, 
in outhouses, in crannies and crevices of rocky cliffs, beneath overhanging 
boulders along mountain streams, and in similar situations. The resting 
positions of the adult flies are discussed on page 712. Many species show 
a notable predilection for resting on spiders’ webs. ‘The immature stages 
of Oropeza obscura are spent in dry moss, as discussed below. Other 
species have been reared in sandy soil and in wet moss. 
