ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 97 



6. Apistephialtes petulcus (Cresson), new combination 



Figures 331,k; 337 



Pimpla petulca Cresson, 1872, Trans. Amer. Ent. Soc, vol. 4, p. 165; 9 • Type: 

 9 , Bosque County, Tex. (Washington). 



Front wing of male about 4.8 mm. long, of female about 6 mm. 

 long; propodeum a little rugulose centrally and with a faint indication 

 of parallel longitudinal ridges at the position of the median longi- 

 tudinal carinae, its punctures separated by about 0.8 their diameter; 

 male subgenital plate and the preceding sternite as in figure 331,k; 

 apex of male clasper short (fig. 337); male eighth and ninth tergites 

 not fused; ovipositor sheath 1.7 as long as front wing; ovipositor tip 

 a little more slender than in A. variatipes. 



Male: Black. Clypeus and mandible dusky ferruginous, the mandi- 

 ble whitish basally; scape and pedicel in front, palpi, tegula, cuneate 

 mark on upper margin of pronotum extending from hind corner 0.7 

 the distance to notaulus, and front and middle legs white, the apical 

 0.6 ± of the last segment of front ai-d middle tarsi brown; fiagellum 

 stramineous beneath; mesoscutum except for a broad median stripe, 

 scutellum, postscutellum, mesosternum, and most of mesepisternum, 

 fulvous; hind coxa fulvous, its apex white; hind trochanters white; 

 hind femur fulvous, its apex and sometimes its front face white; hind 

 tibia whitish, with a narrow subbasal and a broad apical brown band, 

 the apical and subbasal brown areas faintly connected on front face by 

 a narrow stripe; hind tarsus brown, darkest apically, the first segment 

 broadly and the second segment narrowly stramineous basally. 



Female: Colored rather similar to females of A. dentatus with ex- 

 tensive pale markings, but with the middle coxa white. 



Specimens: 9 (type), Bosque Co., Tex. (Washington), d", East- 

 land Co., Tex., Apr. 4, 1921, Grace O. Wiley (St. Paul), d 1 , Texas, 

 Belfrage (Washington). 9, Texas, Belfrage (London). 9, Tuxpan, 

 Michoacan, Mexico, July 17, 1956, R. and K. Dreisbach (Dreisbach). 



This is a rare species, known only from Texas and Mexico. 



7. Apistephialtes dentatus, new species 



Figures 331,1; 338 



Front wing of male 4.0 to 6.7 mm. long, of female 6.2 to 11.0 mm. 

 long; clypeus of male with a moderate-sized median transverse tooth; 

 clypeus of female with its apical half separated from basal half by a 

 sharp transverse declivity (in other species of the genus these clypeal 

 specializations are absent in both sexes) ; propodeum a little rugulose 

 centrally and with two weak parallel longitudinal ridges at the position 

 of the median longitudinal carinae, its punctures separated by about 

 0.6 their diameter; male subgenital plate and the preceding sternite 



