THe CRANE-Fures oF New York — Part II 957 
larva is described here in the hope that it will be reared and its identity 
ascertained. 
Larva.— Length, 7-8.2 mm. 
Diameter, 0.4-0.5 mm. 
Coloration pale yellowish white; skin very delicate, almost diaphanous. 
Body moderately elongated, terete; meso- and metathoracic segments (Plate LX XV, 404) 
and eighth abdominal segment capable of considerable expansion laterally, and, in death, 
usually greatly swollen; last segment of body narrowed, cylindrical, with a number of long 
setae, including a group of five near base of lateral lobes. A few scattered setae along abdom- 
inal segments. Spiracular disk (Plate LX XV, 405) surrounded by five equal elongate spatu- 
late blades, these blades flattened, jet-black in color, margins finely toothed; paired lobes 
near base with a subhyaline median spot; margins of lobes (Plate LX XV, 406) with twenty- 
five to thirty hooks, recurved ones alternating with others laterally directed; when blades are 
closed, these margins hooking closely together; at ends of blades and sparsely scattered along 
margin, long, delicate setae; at apex of blades, two bristles; no spiracles found at base of 
lobes. Anal gills four, lateral pair elongated, telescopic, inner pair shorter. 
Head capsule much as in other eriopterine genera, especially Ormosia and Gonomyia, 
dorsal plates slender, ventral bars a little longer. Labrum as in the tribe; epipharyngeal 
region with a large apical setiferous pad and two smaller pads nearer base. Mentum not 
formed of ventral bars of capsule as in Molophilus. Hypopharynx a semicircular cushion 
covered with long, dense setae, their tips a little recurved. Antenna with apical papilla 
very long for this tribe, about equal in length to basal segment, cylindrical, with tip rounded. 
Mandible moderately large, apical tooth not prominent, lateral teeth rather conspicuous, 
basal ones smaller but not so excessively reduced as in other members of the tribe; prostheca 
large. 
(Described from larvae, Ithaca, New. York, May 11, 1917. No. 29-1917.) 
Tribe Styringomyiini 
The Styringomyiini comprise a small group of very peculiar crane-flies 
with a tropicopolitan distribution. There is only the single genus, 
Styringomyia, with about twenty-five described species. Most of the 
species are from tropical Africa and Asia, tho a few range into Australia 
and the Hawaiian Islands, and one, Styringomyia americana Alex., is 
found. in tropical South America. 
Genus Styringomyia. Loew (Gr. a kind of tree-gum + fly) 
1845 Styringomyia Loew. Dipt. Beitr., vol. 1, p. 6. (Correctly Syringomyia — Berg- 
roth in litt.) 
1903 Idiophlebia Griinb. Zool. Anzeig., vol. 26, p. 524-528. 
1912 Pycnocrepis Ender]. Zool. Jahrb., vol. 32, part 1, p. 65. 
1917 Mesomyites Ckll. Proc. U.S. Nat. Mus., vol. 52, p. 377. 
