THE CRANE-FLIES OF New York — Part II 985 
States as “weavers.” They frequent rather shady. places and have 
a remarkable dance over three or four feet of vertical space, whence the 
name “king of the dancing tipulids”” given them by Johnson. This 
species is the only one whose immature stages are at all known. 
Brachypremna dispellens (Walk.) 
1860 Tipula dispellens Walk. Trans. Ent. Sce. London, n. ser., vol. 5, p. 333-334. 
1886 Brachypremna dispellens O. S. Berl. Ent. Ztschr., vol. 30, p. 162. 
Brachypremna dispellens is the most widely distributed species of the 
genus. It ranges from New Jersey southward thru North America, and 
thru South America as far as Argentina. A larva found by R. C. Shannon 
in a rotten log by a stream near Washington, D. C., on April 23, 1913, 
was placed in rearing and emerged in May as an adult male of this species. 
The badly mutilated pupal skin was preserved and is here described. 
No part of the larva was preserved. 
Pupa— Length of cast pupal skin, about 18 mm. 
Coloration brownish yellow; abdomen with a broad brown sublateral stripe on both ventral 
and dorsal segments; each of pleural spines set in a brown spot. 
Head small. Antennal spines very large and crowded at base, soon passing ie the short, 
slender flagellum. Labrum (Plate LX X XVII, 474) blunt. Labial lobes closely approximated, 
so as to appear as a single large, transversely rectangular lobe at end of labrum. Sheaths 
of maxillary palpi short, not recurved at tip. Pronotal breathing horn (Plate LX X XVII, 475) 
small, slender, curved, ringed with fine annuli, tapering gradually to the small apex; margin 
of apex set with breathing pores. Mesonotum with eight conspicuous, blunt, naked tubercles; 
the four intermediate tubercles larger, arranged in the form of a trapezoid; anterior median 
pair high, ccnical, located rather close to mid-dorsal line. Wing sheaths reaching end of 
second abdominal segment. Leg sheaths (Plate LXXXVII, 476) extending beyond mid- 
length of fourth abdominal segment; fore legs very short, ending opposite base of third 
tarsal segment of other legs. 
Abdominal tergite 1 with a pair of long, slender spines before posterior margin; segments 2 
to 7 subdivided into a basal and a posterior ring, the latter with a transverse row of four long, 
slender spines before posterior margin, the seventh tergite with about six such spines; sternites 
similar, with four spines on posterior ring; pleurites with a slender spine on basal and posterior 
ring; at base of posterior ring between spines, an indistinct, slightly protuberant spiracle. 
Male cauda (Plate LXX XVII, 477) narrowed, small, valves blunt; on dorsal side near base 
four conspicuous lobes, each terminating in a slender, chitinized spine; a small acute spine on 
sides of ninth segment at base. 
Neanotype.— Cast pupal skin, Washington, D. C., May, 1913 (in collection of United 
States National Museum). 
