THE CRANE-FLIES OF NEW YORK PART II 845 



ated with the larvae of the syrphid fly, Temnostoma bombylans (Fabr.) 

 and the supposed larva of Protoplasa (p. 770). 



Larva. Length, 18 mm. 



Diameter, 1.6 mm. 



Coloration pale whitish; anterior segments of body brighter-colored, more reddish. 



Form stout and plump, not narrowed at ends of body. Pronotum longer than other 

 thoracic segments. Integument covered with a short appressed pubescence. Abdominal 

 segments 2 to 7 with conspicuous white creeping-welts on ventral surface of basal ring; these 

 welts not interrupted medially, and entirely naked. Spiracular disk (Plate XXXVI, 163) 

 large, unmarked, surrounded by five short lobes, the ventral pair very widely separated; 

 dorsal lobe broad and obtuse; entire disk fringed with very short, delicate hairs which are 

 interrupted only between paired lobes; inner face of lobes suffused with pale brown at tips. 

 Spiracles large, circular, reddish with a very broad yellow margin, separated by a distance 

 nearly equal to two times the diameter of one spiracle. Anal gills four, retractile. 



Head capsule (Plate XXXVI, 158) broad and massive, the constituent plates firmly united 

 except on ventral parts. Labrum broadly transverse; a median epipharyngeal part whose 

 surface is finely pitted, bearing on ventral side near margin two stout setae; lateral angles of 

 labrum directed proximad and densely tufted with hairs; extreme lateral margins of labrum 

 with a curved hyaline seta; juncture of labrum and clypeus with two large setiferous punctures 

 on either sid3; a few setiferous punctures on head capsule. Mentum (Plate XXXVI, 159) 

 heavily chitinized, the outer face terminating in a single median tooth, behind which is a 

 tridentate plate with three flattened teeth, the lateral ones very broad. Prementum (Plate 

 XXXVI, 160) lying just behind men turn, a moderately broad transverse plate whoe 

 anterior margin is deeply and almost squarely notched, the lateral lobes thus formed being 

 rounded or feebly indented at their tips. Hypopharynx (Plate XXXVI, 161) lying above 

 and connected with prementum, consisting of a large flattened lobe, whose outer margin 

 is evenly rounded, the surface densely set with longitudinal rows of small, subr.cute papillae. 

 Antenna short, two-segmented; basal segment cylindrical, with auditory plate almost basal 

 in position; apical segment small, subglobular or hemispherical. Mandible moderate in 

 size, broad at base with a blunt apical tooth and a few blunt lateral teeth, two on dorsal 

 cutting edge and two on ventral cutting edge, the more basal of these latter tending to be 

 evanescent; two stiff setae at heel of mandible; a triangular lobe on dorsal face which 

 projects onto lateral parts of labrum. Maxilla (Plate XXXVI, 162) primitive in structure; 

 cardo elongate, transverse, with four setiferous punctures bearing powerful setae; outer lobe 

 glabrous, with palpus at its tip; palpus slightly elongate, the auditory plate just before 

 midlength; a seta on outer lobe below palpus; inner lobe of maxilla with a dense terminal 

 brush of stiff yellow hairs and a few sensory papillae. 



Pupa. Length, 12-12.5 mm. 



Width, d.-s., 2-2.1 mm. 

 Depth, d.-v., 2-2.1 mm. 



Head, thorax, and appendages brown, becoming darker with age; pronotal breathing 

 horns light red; abdomen whitish, the terminal rows of spicules on the segments chitinized. 



