J. R. MALLOCH 301 



A very common species in Europe and North Amewca. The 

 larvae mine in leaves of spinach, beet, lambs-quarters, etc. 



Pegomyia acutipennis sp. n. 



Male. — Black, densely gray pruinose, thorax slightly shining. Head black; 

 frontal triangle and parafacials largely rufous. Antennae and palpi black. 

 Thorax with three rather indistinct brownLsh black vittae, the laterals most 

 distinct caudad of suture. Abdomen marked as in Anlhomyia pluvialis Linne. 

 Legs black, mid and hind femora browni.sh towards apices, all tibia reddish 

 testaceous. AVings clear. Calyptra white. Halteres yellowish. 



Eyes very large, covering almost the entire side of head, almost touching 

 above, parafacials linear in profile, cheek not higher than width of third an- 

 tennal joint, the latter less than twice as long as second; arista microscopically 

 pubescent. Thorax with three pairs of presutural acrostichals; prealar 

 bristle about one-third as long as the bristle behind it. Abdomen flattened; 

 fifth sternite with a deep central incision, each lateral process terminating in a 

 rounded point, the margin of the incision armed with rather dense, short 

 stiff hairs; hypopygium small. Fore tibia with two short bristles, one antero- 

 dorsal and one posterior; mid femur with five to seven bristles on basal half 

 of postcro-ventral surface; mid tibia with one antero-dorsal, one to two pos- 

 tero-dorsal, and one to three posterior bristles; hind femur with a series of 

 l)ristles on antero-ventral surface from base to apex, and another on postero- 

 vontral surface from base to beyond middle; hind tibia with two short antero- 

 vcnitral setulae, two longer antero-dorsal bristles, and two postero-dorsal bris- 

 tles, the lower one very long. Wings slightly pointed, third vein ending almost 

 in apex; costal thorn very weak. 



Female. — Differs from the male in having the anterior half of interfrontalia 

 orange red, and the legs much paler, the femora being entirely reddish testa- 

 ceous or with a slight darkening on the fore pair. 



E3-es separated by about one-third the head-width; orbits about one-third 

 as wide as interfrontalia, the bristles rather short, lower supraorbital directed 

 forward; cruciate l)ristles present; cheek not higher than width of third anten- 

 nal joint; paljii very broad, si)atulate; mid and hind femora with fewer and 

 much shorter bristles than in male. Wing less pointed than in male. Length, 

 4.5 to .i.r> mm. 



Type.—& ; Alamogorclo, New Mexico, April 30, 1902, [A. N. S. 

 No. 6211]. Paratypes.~2 d" , topotypical, April 30 and May 2, 

 1902; 1 9, Cloudcroft, New Mexico, May 16, 1902; 1 9, Carr 

 Canon, Huachuca Mountains, Cochise County, Arizona, August, 



lUO.K 



This species resembles Anthomyia pluvialis Linne in markings 

 of the abdomen, but does not belong to the same genus, having 

 the propleura bare ventrad of humerus. 



TRANS. AM. ENT. SOC, XLIV. 



