1912] New Neotropical Tipuline 300 
Tipula aymara, sp. n. 
Orange; costal margin of the wings dark; cross-veins not seamed 
with brown; radial cells light brown. 
Length, o&', 15 mm.; wing, 17 mm.; antennz, about 7.6 mm. 
Length, 9, 13.8 mm.; wing, 14.6 mm. 
Hind leg, o&; fem. 10.4; tibia, 13.3; tarsus about 25.5 mm. 
Hind leg, 2 ; fem., 8; tibia, 9.6 mm. 
o& Head: Anterior prolongation of front short, light brown; palpi, 
segment one, shorter than two, brown; 3d about equal to 2d, dark brown 
at base; pale, yellowish, at tip; 4th, very long, lash-like, twice as long as 
the rest of the palpus together, yellow. Antenne, segments 1 to 3 
orange-yellow; remainder brown, with a fine white pubescence; three 
or four bristles at the base of each segment and a single one near the 
middle. Front and vertex brownish-orange; occiput brown; the vertex 
very thickly beset with numerous long hairs; this including the whole 
region bounding the eyes, both above and beneath. 
Thorax: Collare orange. Pronotum orange-yellow. Mesonotum, 
prescutum and scutum orange without distinct markings; scutellum 
and postnotum yellow. Pleure and sternites clear yellowish-orange. 
Halteres yellow, knob darker. Legs: cox, trochanters and extreme 
base of femora light yellow; rest of femora, tibize and tarsi brown; all of 
the cexe thickly beset with long yellow hairs. Wings (see Fig. b) with 
a pale brownish-grey tinge; cells C, Sc, most of 2d R, light brown; the 
distal half of cell Ist R; dark brown, forming the stigma; no brown 
seams on the cross-veins or deflections. Radial cells, indistinctly suf- 
fused with very light brown distally; cross-vein r-m slightly margined 
with brown. 
Abdomen: Tergum, Ist segment, yellow; 2d brown; 3d, 4th, dark 
brown; 5th, 6th, lighter brown; 7th, 8th, black; the Ist to 5th tergites 
are very deep, so that viewed from the side, they conceal the sternites; 
the 6th sternite shows caudally, the 7th is one-third as high as the 7th 
tergite, the 8th sternite subequal to the Sth tergite. Sternum, seg- 
ments one to five, invisible, 6, orange, 7—9, black. Hypopygium 
(Fig. m). 7th sternite almost straight along the caudal margin; 7th 
tergite, broad, its caudal margin almost straight, very feebly concave. 
8th sternite (from beneath), broad, the caudal margin with an obtuse 
median notch, the adjacent lobes broadly rounded and clothed with a 
dense brush of long yellow hairs; (from the side) (8s) with the dorsal 
margin gently sloping; the tip truncated: Sth tergite, (St) reduced to a 
mere strip, its caudal margin rather strongly concave so that the median 
portion is scarcely visible. 9th sternite (9s) appearing as the half of an 
oval, the outer face sub-shiny, convex, a small group of long hairs on 
its dorsal angle; the dorsal margin strongly bent entad, the proximal 
margin straight, almost in a line with the notch on the 8th sternite, the 
two together making a very deep V-shaped niche; the proximal-ventral 
side is strongly produced into a rectangular arm, projecting entad, its 
tip strongly truncated, almost touching its fellow of the opposite side. 
Looking into the end of the genital chamber (see Fig. m;) there appears 
