242 CONXECTICTJT GEOL, AND NAT. HIST, SUm'EY |Blll). 



two more southern local species, caroliniana and longiventris, the an- 

 terior border of this saucer is indicated by a blackened transverse 

 ridge, the remainder of the area being pale. In the species with a 

 blackened saucer, this often tends to bend ventrad and cephalad, so 

 the only portion visible from above is the anterior or cephalic ele- , 

 vated rim. Ovipositor with cerci strong and powerfully constructed, 

 heavily sclerotized, horizontally placed and with the outer edge ser- 

 rate; hypovalvae very small or rudimentary. ! 

 The species are chiefly Northern and Arctic in distribution. All 

 members of TestipJex have the wings marmorate with brown, gray 

 and white; the praescutal stripes usually strongly margined with 

 brown ; and with the male antennae strongly excised beneath, in cases 

 very strongly so. The local species all have the basistyle of the malei 

 hypopygium unarmed, except in caroliniana and longiventris. 



Key to Species 



1. Ground-color of wing pale brown or gray, sparsely variegated with darker 



brown and whitish areas ; cell R without white areas immediately be- 

 yond arculus • • • 2. 



Ground-color of wing brown, more conspicuously variegated with whitish, 

 including a large area in cell R just beyond arculus 3 



2. Wings with the whitish areas restricted to small marks near posterior mar- 



gin of cell M and in cells 1st M^ and base of A'L centralis! 



Whitish wing-pattern more extensive, including areas before and beyond 

 origin of Rs, a conspicuous band beyond stigma and anterior cord and a 

 basal area from cell M through 1st A perretti 



3. W'ings with a conspicuous brownish area in bases of cells R and M beyond 



arculus 4^ 



Wings with cells R and M just beyond arculus clear 7\ 



4. Male hypopygium with basistyle armed caudally with a slender spine ; tergite 



pale, the cephalic border of tergal saucer represented by a small median, 

 transverse black elevation; female (known only in longiventris), with 



abdomen greatly elongated 5' 



Male hypopygium with basistyle unarmed ; tergal saucer more extensively 

 blackened ; abdomen of normal length in both sexes 6i| 



5. Antennae ( $ ) relatively short ; flagellum bicolorous, the enlargements black, 



the remainder yellow ; praescutum fawn-colored, the stripes bordered by 



brown; darkened post-arcular area more extensive longiventris! 



Antennae ( $ ) more elongated ; flagellum unicolorous, dark brown ; praescu- 

 tum dull gray, with four brown stripes : darkened post-arcular area re- 

 duced Carolinians 



6. Antennal flagellum distinctly bicolored throughout, the enlargements dark- 



ened, the remainder yellow; cell 2nd A of wings uniformly whitened or 



with a linear brown discal streak fultonensis 



Antennal flagellum beyond the basal segments uniformly dark brown ; cell 

 2nd A of wings more clouded v/ith brown platymerai 



7. Wing-pattern very pale, being scarcely darkened along cord ; dark pattern 



restricted to small clouds at origin of Rs and in vicinity of stigma ; cell 



Ro pale at base; cell 1st M-2 almost uniformly pale serrulatai 



Wing-pattern more developed ; cell i?^ darkened at base ; cell 1st ih with 

 outer cephalic half darkened Jl 



8. Antennae dark throughout ; flagellum entirely black, the segments (S ) 



very strongly excised, the outer lobe nearly equal in size to the basal en- 

 largement ; abdomen (?) bluish gray arcticai 



Antennae indistinctly to clearly bicolorous, the flagellar segments less strongly 

 excised; abdomen obscure yellow or brownish yellow, the tergites with a 

 median brown stripe f 



