Tue CRANE-Fiies or New York — Part II 939 
(Subgenus Leiponeura Skuse) 
1889 Leiponeura Skuse. Proc. Linn. Soc. N.S. Wales, ser. 2, vol. 4, p. 795. 
1915 Lipophleps Bergr. Psyche, vol. 22, p. 55. 
Gonomyia (Leiponeura) alexanderi (Johns.) 
1912 Elliptera alexanderi Johns. Psyche, vol. 19, p. 3. 
The beautiful crane-fly Gonomyia alexanderi is locally common in the 
eastern United States. The adult flies may be swept from rank vegetation 
in the neighborhood of streams. When resting, the adults have a char- 
acteristic position, the fore legs standing straight ahead and almost 
parallel, the middle legs extended laterally and slightly forward, the 
hind legs directed backward but widely divergent, and the wings folded 
over the back. This is the characteristic resting position for the genus. 
The larvae were found in some numbers in rather coarse sand, around 
small pools of water near the Sacandaga River, Fulton County, New York, 
on June 5, 1914. The adults emerged on June 16, giving a pupal period 
of not more than eleven days and presumably much less. The description 
and figures of the pupa are made from the cast pupal skin of the male. 
Larva.— Length, 8.3 mm. 
Diameter, 0.4—-0.5 mm. 
Coloration very pale yellow or yellowish white. 
Form terete, elongated, slender. Body with a sparse, pale pubescence, at posterior margins 
of segments with a transverse erect ridge of stiff hairs. Spiracular disk (Plate LX XV, 403) 
large, flattened, almost pentagonal in outline, surrounded by five lobes; dorso-medi-n 
lobe small, slender; paired lobes very short and blunt; margin between lobes almost straight 
or but feebly concave; when disk is partly closed, lobes appearing a little more prominent; 
ventral lobes a little larger than lateral lobes; lobes heavily suffused with brown; on ventral 
lobes a lateral dark brown line running dorsad to near spiracles, at its dorsal end connected 
across disk by a paler brown suffusion; proximal stripes of ventral lobes shorter and paler, 
above their inner ends with a small brown spot; lateral lobes almost entirely suffused with 
brown, this entirely surrounding spiracles and in some specimens entirely suffusing disk 
between spiracles, this mark bifid at its distal end; dorsal lobe indistinctly marked with 
very pale brown; disk margined with short, pale hairs which are not interrupted and are 
only a little longer at tips of lobes. Spiracles widely separated, the distance between 
them being three or four times diameter of one; spiracles yellow, centers pale brown. 
Head capsule as in the tribe, the ventral bars broader than the slender dorsal bars, their 
inner ends not expanded or toothed to form the mental plate. Labrum-epipharynx moder- 
ately elongate, densely hairy. Mentum not chitinized; hypopharyngeal region a cushion, 
covered with delicate, short setae. Antenna as in this tribe, basal segment moderately elon- 
gate, densely hairy, apical papilla rather small, elongate-oval. Mandible (Plate LX XV, 402) 
