1 64 AGRICULTURAL EXPERIMENT STATION. 



The dorsum of the thorax is dark velvety brown at the sides, 

 with four weak median stripes of yeUowish gray hairs, arranged 

 on elevated ridges, the dividing depressions being brown ; pleura 

 dark brown with a few scattered whitish scales. The legs are 

 very long and slender, dark brown, becoming almost black on 

 the tarsi, the femora are slightly paler beneath, and the knees 

 and apices of the tibiae have a distinct yellow dot. The claws 

 of the anterior tarsal joint in the male (fig. 45, 5) are very 

 unequal in size, the large claw with a median tooth and a pro- 

 jecting extension of the base which appears as a tooth, the small 

 claw very short, and simple. The claws of the mid (fig. 45, 6) 

 and posterior tarsal joints are equal and simple, the latter a little 

 smaller than the median. In the female the claws are ecjual and 

 simple on all feet. The wings are hyaline, with the veins covered 

 with black and yellow scales in patches as follows : costa, basal 

 two-thirds and central part of the outer third black, each end of 

 outer third yellow ; sub-costa, black ; radius one, basal two-thirds 

 and central part of outer third black, each end of outer third 

 yellow ; radius two, black at basal three-fourths, then yellow to 

 the fork, remainder black except a small yellow portion at the 

 wing margin ; radius three, black, sometimes with a yellow portion 

 near the wing margin; radius four and five black, except for a 

 few yellow scales near the wing margin; media one and 2, black, 

 divided twice by yellow before the fork and again at the central 

 third after the fork; media three, black with central yellow por- 

 tion ; cubitus, wholly black ; anal vein black with a yellow portion 

 near the base. The maculation of the wing veins runs generally 

 as given above, but is more or less variable; the yellow portions 

 sometimes being much larger or reduced, and the yellow divisions 

 on media one and two before the fork connecting in one broad 

 patch. 



The abdomen is dark brown with yellowish brown hairs evenly 

 scattered over the entire surface ; beneath it is also dark brown, 

 paler at the base of the segments. 



Habits of the Adult. 



This species occurs throughout the State and is really our 

 common form. It is, however, on the whole much more abund- 

 ant south of the red shale line and is the dominant species 

 throughout most of South Jersey. There is nothing at all pe- 

 culiar or unique in its habits. It is readily recognized by the 

 distinctly mottled wings and the large size, being the largest 

 species in the State except for Psorophora. 



