220 
Psyche 
[September 
Dimorphagenia naumanni, new species 
Holotype . — c?, Limoncoche, Prov. Napo, Ecuador (oo° 24'S, 
76° 36'W) 7 May 1971 (Martin G. Naumann, nest 2048) [Mus. 
Comp. Zool., no. 32105]. 
Description >of male type. — Length 7 mm; fore wing 6 mm. 
Entire body testaceous except center of front and (to a lesser degree) 
vertex blotched with medium brown ; legs wholly testaceous ; an- 
tennae testaceous darkened to medium brown beyond basal third, 
flagellar segments narrowly ringed with fuscous apically. Wings very 
lightly tinged with brown; stigma testaceous. Pubescence pale, 
inconspicuous. Body largely devoid of erect setae except for strong 
bristles on clypeus and mandibles, scattered setae on front, vertex, 
and thoracic dorsum (but not propodeum), and numerous short 
setae toward apex of abdomen. 
Clypeus 2.8 X as wide as high, apical margin weakly concave; 
middle interocular distance .68 X head width, 1.4 X eye height; 
upper and lower interocular distances subequal; postocellar line: 
