ICHNEUMON-FLIES, PART 2: ACAENITINAE 547 



Hind coxa black, its apex yellowish; second tergite about 2.2 as long as wide; 

 clasper a little shorter than in C. occidentalis; range: eastern part of Canadian 

 zone 2. quebecensis Provancher 



FEMALES 



1. Areolet absent; prepectal carina absent; front wing 7.5 to 13 mm. long. 



8. flavipes Provancher 



Areolet present; prepectal carina present (but weak) ventrally; front wing 



12 to 19 mm. long 2 



2. Subbasal transverse band of hairs on clypeus containing about 35 hairs ... 3 

 Subbasal transverse band of hairs on clypeus containing 10 to 20 hairs ... 4 



3. Hairs on second tergite rather sparse, especially medially; second and third 



tergites reddish brown; hind coxa ferruginous to black, usually black with 

 ferruginous stains; apical membranous margins of tergites 2—7 blackish. 



1. occidentalis Cresson 

 Hairs on second tergite rather dense; second and third tergites black; hind 

 coxa black; apical membranous margins of tergites 2-7 stramineous. 



2. quebecensis Provancher 



4. Thorax mostly ferruginous; hairs on median part of face very sparse. 



7. rufus Provancher 

 Thorax black; hairs on median part of face dense or moderately dense. . . 5 



5. Coxae fulvous 6 



Coxae blackish 7 



6. Hind tarsus blackish brown; lateral sternite of third abdominal segment with 



dense, evenly distributed hairs; ovipositor sheath about 1.15 as long as 



front wing 4. harringtoni Cushman 



Hind tarsus brownish fulvous; lateral sternite of third abdominal segment with 

 sparse, irregularly distributed hairs; ovipositor sheath about 0.95 as long as 

 front wing 5. rufocoxatus Pratt 



7. Lateral sternite of third abdominal segment with dense, evenly distributed 



hairs; tegula blackish; front wing 15.5 to 18 mm. long; ovipositor sheath 



about 1.08 as long as front wing 3. pettiti Cresson 



Lateral sternite of third abdominal segment with rather sparse, irregularly 

 distributed hairs; tegula usually fulvous; front wing 12 to 14 mm. long; 

 ovipositor sheath about 0.92 as long as front wing . . 6. manni Cushman 



1. Coleocentrus occidentalis Cresson 



Figure 371 



Front wing of male 12.5 to 15 mm. long, of female 13 to 19 mm. 

 long; face densely hairy; clypeus about 2.5 as wide as long, subbasally 

 with a transverse band of 30 to 50 hairs arranged in an irregularly 

 double to quadruple row; prepectal carina present ventrally; median 

 longitudinal carinae of propodeum moderately strong; areolet present; 

 second tergite of male about 2.4 as long as wide; hairs on second tergite 

 of female rather sparse, especially medially; hairs on lateral sternite 

 of third abdominal segment moderately dense, evenly distributed: 

 male clasper as in figure 371; ovipositor sheath about 1.20 as long as 

 front wing. 



