ICHNEUMON-FLIES — GELINAE I MESOSTENINI 393 



Dates of collection are from late spring to the end of summer. 

 Unusually early and late dates are: April 3 and 4 at San Antonio, 

 Tex.; May 12 at Baldwin, Ark.; May 29 at Raleigh, N.C.; September 

 6 at Falls Church, Va.; September 29 in Douglas Co., Kans.; and 

 "October" at Piano, Tex. 



We have found the species in open shrubby areas, usually among 

 weeds. 



This species occurs in the Carolinian and Austroriparian faunas. 



20. Genus Lymeon 



Figure 318,a 



Lymeon Foerster, 1868, Verb. Naturh. Ver. Rheinlande, vol. 25, p. 176. Tj'pe: 



{Lymeon annuUcornis Ashmead) =or6M?n (Say); monobasic. 

 Christolimorpha Viereck, 1913, Proc. U.S. Nat. Mus., vol. 44, p. 564. New 



synonymy. Type: Christolimorpha plesius Viereck; original designation. 

 Zamastrus Viereck, 1913, Proc. U.S. Nat. Mus., vol. 46, p. 385. New synonymy. 



Type: Zamastrus photopsis Viereck; original designation, 

 Neogoryphus Roman, 1936, Ent. Tidskr., vol. 67, p. 3. New synonymy. Type: 



Ichneumon ariolator Linnaeus; original designation. 

 Nasutocryptus Pratt, 1945, Amer. Midi. Nat., vol. 34, p. 560. New synonymy. 



Type: Nasutocryptus nasutus Pratt; original designation. 



Front wing 3.7 to 9.0 mm. long; general appearance and structure 

 as described for Diapetimorpha except as follows: Clypeus usually 

 smaller and with a small, weak median apical impression; areolet more 

 regularly pentagonal; apical propodeal carina of male usually forming 

 more distinct sublateral crests and elsewhere weaker or incomplete; 

 teeth on propodeum of female usually more conical and blunter; 

 first tergite without a subbasal lateral tooth; and second tergite of 

 female with sparse setiferous punctures that are separated usually 

 by more than the length of the hairs. Rarely the discoidella is 

 shortened or absent. 



This is a very large genus, including small, bright-colored species, 

 the males often very differently colored from the females. There 

 are four Nearctic species. The rest are Neotropic. 



Key to the Nearctic species of Lymeon 



1. Thorax black and white 2 



Thorax fulvous or ferruginous, with or without white markings 3 



2. Mesoscutum with a single median white spot; hind coxa black and white. 



1. cinctiventris (Cushman) 



Mesoscutum with a pair of submedian white stripes; hind coxa of male fulvous 



and white with a black stripe above; hind coxa of female fulvous, usually 



with a whitish mark above 2. orbum (Say) 



3. Clypeus simply convex, without a conical point; discoidella completely absent; 



thorax with white markings 3. leiponeuron, new species 



Clypeus extending ventrally as a conical point; discoidella present; thorax 



without white markings 4. nasutum (Pratt) 



589900—62 26 



