ICHNEUMON-FLIES OF AMERICA: 1. METOPIENAE 159 



from second recurrent by about 0.75 its length; nervulus postfurcal 

 by about 0.3 its length; nervellus inclivous, weakly broken just above 

 its lower end; prepectal carina complete, its dorsal end joining front 

 end of subtegular ridge; sternaulus a broad, shallow, moderately 

 long impression; metapleurum subpolished, with moderately dense 

 punctures all over; propodeum of moderate length, convex in profile 

 but more sharply declivous beyond apical transverse carina, its 

 carination complete except that costula is lacking and areola and 

 median basal area confluent; propodeal spiracle small, circular; legs 

 moderately stout; base of hind coxa extending very little behind its 

 socket; spurs of middle tibia of equal length; tarsal claws apparently 

 simple; abdomen narrow basally, widened apically; first tergite rather 

 narrow at base, its spiracle near its basal 0.3, its lateral longitudinal 

 carina strong to the apex, its median longitudinal carinae present only 

 on basal 0.35; second tergite without dorsal carinae; epipleura of 

 first through third tergites vestigial, of fourth through sixth tergites 

 narrow; female subgenital plate weakly sclerotized, unspecialized. 



Genotype: Macromalon montanum, new species. 



The generic name is from the Greek "macros" (long) plus "malon" 

 (cheek), referring to the distance between the eye and the mandible. 



There is a single known species, from the mountains of Colorado. 



Macromalon montanum, new species 

 Figure 175, a 



Front wing 4.3 to 4.5 mm. long; structure as shown in the figure 

 and as described under the genus. 



Black. Palpi stramineous to dark brown; tegula whitish in front, 

 the rest fulvous to blackish brown; front and middle coxae and first 

 trochanters fulvous to blackish; front and middle femora fulvous or 

 more or less blackish, yellowish at base and apex; front and middle 

 tibiae and tarsi fulvous, the tarsi more or less infuscate; hind coxa, 

 first trochanter, and femur black or blackish brown ; hind second tro- 

 chanter yellowish ; hind tibia brown, with a broad, indefinite, premedial 

 pale band; hind tarsus light brown, the basal half of its basitarsus 

 paler; abdomen entirely black or the apical 0.4 ± of second and follow- 

 ing tergites more or less fulvous. 



Type: 9, Poudre Lake at 11,000 ft. in Rocky Mountain National 

 Park, Colo., Aug. 11, 1948, H., M., G., D., and J. Townes (Washing- 

 ton, USNM 63682). 



Paratypes: 9, Gothic at 9,500 ft., Colo., July 18, 1934, C. P. 

 Alexander (Townes). <j\ Phantom Valley at 9,400 ft., Rocky Moun- 

 tain National Park, Colo., June 17, 1948, G., D., and J. Townes 

 (Townes) . 



