1986] 
Porter — Biconus in Peru 
57 
not far from Chosica and Lima. The valley is well watered and 
enjoys a warm microclimate because of its sheltered situation at an 
altitude just above the point normally reached by nightly Pacific 
coastal fogs during the coolest months of the year. Natural vegeta- 
tion at San Geronimo includes Acacia, Salix, Schinus, Baccharis, 
Tessaria and many other Andean, Chaquenan, and Holarctic gen- 
era. Much of the valley is covered by orchards of chirimoyas, citrus, 
apples, pears, and bananas. Irrigation ditches that traverse the 
orchards permit growth of a lush herbaceous understory from which 
Biconus apoecus and other ichneumonids may be swept. 
Specific name. From the Greek adjective apoecus, ’’away from 
home, abroad”. 
2. Biconus subflavus Porter, new species 
(Fig. 1,3). 
Female. Color: antenna black with some dark brown on scape 
and with a white annulus (extensively brown to black stained below) 
on flagellomeres 3 (near apex) or 4-9 or 10 (basally); head black 
with dark brown on clypeus and lighter brown on mandibular con- 
dyle; mandible blackish with much brown to pale brown, especially 
subapicad and dorsad; palpi dull white; mesosoma pale brownish 
yellow, a little darker and more orangish dorsally; gaster pale brown- 
ish to orangish yellow; wings hyaline with a single brown blotch that 
covers basal 0.4 of discocubital cell, extends a little into base of 2nd 
discoidal cell, and reaches below across most of 1st brachial cell; 
legs pale brownish yellow with some darker staining, especially on 
apices of trochantelli and bases of femora, as well as with 4th and 
5th tarsomeres largely dark brown. 
Length of fore wing: 8.1-10.1 mm. First flagellomere: 9. 3-9. 7 as 
long as deep at apex. Clypeus: with a pair of broad but weak median 
subapical swellings, apical margin moderately convex medially 
beneath swellings, lateral margin not reflexed. Malar space: 
0.80-0.87 as long as basal width of mandible. Mesopleuron: largely 
with fine but sharp horizontally biased wrinkling. Lower metapleu- 
ron: with strong, obliquely biased wrinkling. Wing venation: radial 
cell 3.4-4. 1 as long as wide; 2nd abscissa of radius 1.0-1. 1 as long as 
1st intercubitus; ramellus inserted near basal 0.3 of discocubitus; 
