1986] 
Porter — Biconus in Peru 
55 
Figs. 1-3. Biconus. Fig. 1, Biconus subflavus. Paratype. Fore wing, showing 
color pattern. Fig. 2, Biconus apoecus. Paratype. Fore wing, showing color pattern. 
Fig. 3, Biconus subflavus. Paratype. Hind tarsomere 4, showing very deep median 
apical emargination. 
of petiole and on base of postpetiole; surface of postpetiole shining 
with delicate microreticulation that is strongest laterad and fades 
out toward apex. Gaster : stout fusiform. Ovipositor: sheathed por- 
tion 0.35-0.44 as long as fore wing; tip 0.25-0.32 as high at notch as 
long from notch to apex. 
male, differs from female as follows: Color: scape brownish 
white below and laterally; mandible more broadly pale brown to 
whitish; palpi dull white; tegula partly reddish; front femur ferrugi- 
nous with dusky staining above; mid femur extensively ferruginous 
with irregular dusky staining below and apico-dorsally; hind femur 
ferruginous on much of basal 0.3 (especially above) and mostly 
black apically. 
Length of fore wing: 9.8-10.2 mm. First flagellomere: 5. 5-5. 7 as 
long as deep at apex; on apical 0.6 with numerous but inconspicu- 
ous and well separated whitish linear sensilla. Clypeus: median 
preapical tubercles stronger than in female; apical margin gently 
