THE CRANE-FLIES 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 LXXV, 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 LXXV, 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 subhy aline median spot; margins of lobes* (Plate LXXV, 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 



roth in litt.) 



1903 Idiophlebia Griinb. Zool. Anzeig., vol. 26, p. 524-528. 

 1912 Pycnocrepis Enderl. Zool. Jahrb., vol. 32, part 1, p. 65. 

 1917 Mesomyites Ckll. Proc. U. S. Nat. Mus., vol. 52, p. 377. 



