ICHNEUMON-FLIES, PART 2: ACAENITINAE 561 



Type: 9, Mount McKinley National Park, Alaska, 1932, F. W. 

 Morand (Washington, USNM 63740). 



Paratype: d\ same data as type (Washington). 



The specific name is in honor of R. A. Cushman, who did much 

 to put the classification of the old subfamily Pimplinae on a sound 

 basis. 



3. Genus Arotes 



Figure 309, a 



Arotes Gravenkorst, 1829, Ichneumonologia europaea, vol. 3, p. 446. Type: 



Arotes albicinctus Gravenhorst; monobasic, 

 Sphalerus Kriechbaumer, 1878, Ent. Nachr., vol. 4, p. 41. Type: (Sphalerus 



bifasciatus Kriechbaumer) = albicinctus Gravenhorst; monobasic. 

 Retanisia Cameron, 1886, Biologia Centrali- Americana (Hymenoptera), vol. 1, 



p. 299. New synonymy. Type: Retanisia facialis Cameron; monobasic. 



Arotes is similar to Spilopteron except for the characters in the key. 

 This genus is Holarctic and occurs in Central America. 



Key to the Neartic species of Arotes 



1. Lateral lobe of mesoscutum with a whitish stripe next to notaulus .... 2 

 Lateral lobe of mesoscutum black or fulvous next to notaulus, not whitish . . 3 



2. Hind femur black, its apex ivory; upper hind third of pronotum with fine, weak 



punctures 1. amoenus Cresson 



Hind femur fulvous, its base, apex, and sometimes upper edge blackish; upper 

 hind third of pronotum with moderately dense, sharp punctures. 



3. decorus (Say) 



3. Metapleurum with rather small punctures that are separated by about 1.6 



their diameter; mfde flagellum with a white band, apicad of which the 

 flageilum is brownish for a distance equal to about 0.67 the width of the 

 white band; female flagellum with a white band, apicad of which the flagellum 

 is blackish for a distance equal to about the width of the white band. 



4. melleus (Say) 

 Metapleurum with rather coarse punctures that are subadjacent or crowded; 



male flagellum with its apical 0.4 ± white, the apical 3± segments brownish; 

 female flagellum with a white band, apicad of which the flagellum is blackish 

 for a distance equal to about 0.4 the width of the white band. 



2. maurus Rohwer 



1. Arotes amoenus Cresson 



Figures 319,h, 327,1, 331,j 



Arotes amoenus Cresson, 1868, Canadian Ent., vol. 1, p. 34; 9- Type: 9, 

 Ontario (Philadelphia) . 



Front wing 9.5 to 12 mm. long in male, 10.5 to 15.5 mm. long in 

 female; female flagellum about 0.93 as long as front wing; upper hind 

 third of pronotum with fine punctures, separated by about 3.5 their 

 diameter; lower half of mesopleurum with rather small punctures that 

 are separated by about 1.5 their diameter; metapleurum with medium- 



