REPORT OF THE STATE ENTOMOLOGIST I912 



149 



191 1 Felt, E. P. 



Tritozyga sackeni Felt 



N. Y. Ent. Soc. Jour., 19:32 



This unique form represents a valid species, and though mutil- 

 ated it seems preferable to bestow a specific name and publish the 

 characters so far as they can be determined, particularly as this 

 procedure fixes the identity of the genus beyond all question and 

 removes the danger of another synonym being added to an already 

 overburdened nomenclature. 



Male. Eyes black ; occiput brown. Antennae short, with 9 seg- 

 ments, the basal ones pale yellowish, the distal brown ; first segment 

 small, subglobose, the second distinctly enlarged, ovate, the third 

 subcylindric, with a length three-fourths its diameter, the fourth 

 with a length a little greater than its diameter, the fifth about the 

 same length as the fourth, with a scattering subbasal whorl of 

 rather short, curved setae ; subapically, on the posterior face there 

 is an irregular group of oval, tuber- 

 culate elevations, possibly a special 

 sense organ. Terminal segment 

 evidently composed of three closely 

 fused segments, with a length fully 

 six times its diameter and whorls of 

 stout setae similar to the subbasal 

 one above described near the basal 

 fourth, the middle and the distal 

 fourth of this compound segment. 

 Palpi yellowish, probably quadri- 

 articulate, the first probably with a 

 length one-half greater than its diameter, the second short, the 

 penultimate cylindric, with a length about four times its diameter, 

 the terminal as long as the preceding, slightly dilated apically and 

 with a few coarse setae ; three small ocelli. Mesonotum dark brown. 

 Scutellum yellowish, sparsely setose. Wings hyaline, length 1.5 mm; 

 costa dark brown, rather densely haired ; subcosta uniting with the 

 anterior margin near the basal third, the third vein apparently 

 united with subcosta near the basal fourth and joining the anterior 

 margin near the distal third ; both this and subcosta heavy, dark 

 brown and sparsely haired. The fourth vein rather distinct, slightly 

 curved, its posterior branch an almost direct continuation of the 

 basal portion, while the anterior branch arises at a nearly right 

 angle, and after describing a broadly S-shaped curve, unites with 

 the anterior margin near the distal fifth; fifth vein nearly straight, 

 joining the posterior margin at the distal fourth, the sixth vein 

 stout, irregularly curved and uniting with the posterior margin 

 near the basal half. Halteres probably yellowish, the stem long, 

 curved, the distal portion spatulate. Coxae yellowish ; femora, tibiae 

 and tarsi yellowish brown, the latter with five segments, the first 

 longer than the second, the claws probably simple. Type in the 

 Museum of Comparative Zoology. 



Fig. 27 Wing of Tritozyga 

 sackeni, enlarged. (Original) 



