342 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [BulL 



6. Subtribe Orimargaria 

 Orimarga O. S. 

 1869. Orimarga Osten Sac-ken; Mon. Dipt. N. Amer.. 4:120. 

 Subgenus Diotrepha O. S. 



1878. Diotrepha Osten Sacken; Cat. Dipt. X. Amer.. ed. 2 : 219-220. 



Oinmarga is a widelj-distributed genus, with representatives in 

 all major faunal areas. Diotrepha is found in tropical and subtropi- 

 cal America. A single species enters the southern limits considered in 

 this paper. The local fly is of very strange appearance, most often 

 found by sweeping marshy vegetation in open woodlands. The im- 

 mature stages are found in decaving w^ood (see Rogers, Ann. Ent. Soc. 

 America, 20 : 23-26, pi. 3 ; 1927) ." 



Orimarga {Diotreph-a) mirabilis ((). S.) (Fig. 38, G). 

 1878. Diotrepha mirahilis (Jsten Sacken ; Ihkl.^ ed.- 2 : 220. 



Fig.— Needham, 23rd Rept. N. Y. St. Ent. for 1907, pi. 29, fig. 6 (ven.) : 1908. 



Body very elongate in both sexes. General coloration gray, abdo- 

 men more blackened. Legs elongate, white, the tips of femora black- 

 ened, bases and tips of tibiae more narrowly so. The somewhat re- 

 markable venation is shown (Fig. 38, G) : the recession of tn-cu to- 

 wards wing-base readily distinguishes this fly from all others in Xorth 

 America. $. L. 7.5-8 mm.; w. 4.5-5 mm. 9. L. 8.5-9 mm.: w. 5 

 mm. 



(June, July) S. Ind., southw. to Ga., n. Fla. and Tex. (Xeotropics: Cuba and 

 Hispaniola). 



Pediciini 



This very primitive tribe includes a small number of genera and 

 species, well-distinguished by the haiiy eyes, unusually long Sc^, with 

 Sc-j, opposite or before the origin of Rs^ and the generalized arrange- 

 ment of veins at the end of Rs. Two subtribes, the Ularia and Pedi- 

 caria, are maintained as distinct chiefly on characters of the immature 

 stages. 



The species of the subgenus Pedicia are among the largest and 

 most showy species of Tipulidae within our limits. The members of 

 the subgenera TricyphoTui, and NasiterneUa are of medium to rather 

 large size, and almost invariably with wings that are patterned, either 

 with a costal darkening or with spots and clouds on the disk. The 

 majority of the local members of the tribe fall within the limits of 

 Dicranota., distinguished by the small size and, in most cases, un- 

 variegated wings. The Adelphomyaria, which have been placed in 

 the Pediciini on larval characters, are herein treated as being the 

 most generalized subtribe of Hexatomini. 



Kc\ to Subtribes and Genera 



1. Wings with membrane covered with abundant macrotrichia (Fig. 40. A) 



(Ularia) Ula 



Wings with cells glabrous (Pedicaria) 2 



