50 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 part 3 



a brownish tinge, paler basally and apically, the wing veins pale brown ; 

 apical margin of second and third tergites reddish brown. 



The pentagonal areolet of this species is as in the genus Ischnus, 

 but the ovipositor tip and general structure are more as in 

 Agrothereutes. 



Type: 9, swept from Artemisia on U.S. Route 108 on east side 

 of Sonora Pass, 8,000 ft., Calif., July 6, 1948, H., M., G., and D. 

 Townes (Washington, USNM 63751). 



Para type: cf , swept from Artemisia on U.S. Route 108 on east 

 side of Sonora Pass, 8,500 ft., Calif., July 4, 1948, H., M., G., and 

 D. Townes (Townes). 



5. Agrothereutes abbreviator (Fabricius) 



Figure 327,e 



Front wing of male 2.8 to 6.0 mm. long; wings of female often 

 reduced, in which case they are about 0.7 to 0.85 as long as thorax, 

 when fully developed they are 3.0 to 6.5 mm. long; clypeus rather 

 small, strongly convex; face rather narrow, mat, with small, weak 

 punctures that are separated by about 1.5 their diameter in female, 

 a little closer in male, the central 0.25 of the face somewhat raised, 

 convex, less strongly mat, and more distinctly punctate, the punc- 

 tures in this area a very little closer; mesopleurum subpolished, 

 with irregularly reticulate wrinlding and some punctures, the pro- 

 portion of punctures to wrinkling variable, the wrinkling just below 

 subtegular ridge irregular or with a vertical tendency; mesoscutum 

 polished or weakly mat, with medium-sized, sharp punctures that are 

 separated by about 0.8 their diameter; mesoscutum of short winged 

 females only sparsely punctate; intercubiti weakly convergent an- 

 teriorly, the areolet subquadrate or subpentagonal; second tergite 

 mat, with small, weak punctures that are denser in male than in fe- 

 male; ovipositor tip as in figure 327,e. 



Color variable, according to the subspecies, and with much variation 

 within the subspecies. 



This species is Holarctic. A classification of the forms grouped 

 under abbreviator is difficult, mainly because of the lack of clear- 

 cut characters, the presence of long and short winged females, 

 and the lack of female specimens from many critical areas. We 

 are assuming, with only incomplete proof, that all short winged 

 females of the genus belong to this single species and that this species 

 has subspecies in which a varying proportion of females have long 

 or short wings. We also are assuming that our Nearctic forms are 

 linked by intergrading populations to the European type form. 

 Further collections and studies are needed for the proof or disproof. 

 Of one of the Nearctic subspecies, A. a. iridescens of the Alleghanian 



