CYDNIDAE OF THE WESTERN HEMISPHERE FROESCHNER 583 



Mesopleuron: As described for genus. 



Metapleuron: As in discrepans (fig. 106), peritreme apically fusing 

 with surrounding cuticula; lateral edge of evaporatorium deeply 

 concave; lateral polished area faintly convex, with several obsolete, 

 longitudinal rugae. 



Sternites: Polished, impunctate; suture finely crenulate. 



Legs: Moderately long; posterior tibia gently curved, with prom- 

 ment angulation at basal fourth of postero ventral margin, emargina- 

 tion basad of this finely crenulate. 



Terminalia: Genital capsule with apical margin slightly emarginate 

 medially; surface with numerous punctures laterally, gonostylus as 

 illustrated (fig. 263). 



Length of body: 9.30(8.69)-9.95). 



Female: Similar to male, usually with fewer pronotal punctures 

 and never with the modification of the posterior tibia that occurs in 

 the males of all species in this subgenus. 



Head: Length-width ratio, 1.53(1.49-1.57): 2. 13 (2.08-2. 18); inter- 

 ocular width, 1.40(1.36-1.47). Antennal segments: I, 0.51(0.50- 

 0.53); II, 0.62(0.60-0.66); III, 0.57(0.53-0.60); IV, 0.78(0.76-0.80); 

 V, 0.78(0.75-0.83). Labial segments: I, 0.77(0.76-0.80); II, 1.30(1.26- 

 1.35); III, 1.13(1.10-1.23); IV, 0.69(0.68-0.70). 



Pronotum: Length-width ratio, 2.84(2.80-2.89) :5.12(5.10-5.20). 



Scutellum: Width-length ratio, 3.33(3.28-3.45) :3.30(3. 18-3.43). 



Length of body: 9.25(8.89-9.45). 



Type data. — Holotype male (USNM 64415) from Austin, Tex., 

 with the label "Pangaeus discrepans" and Van Duzee's label reading 

 "does not agree." Allotype female (USNM), "Austm, Tex., C. T. 

 Brues." Paratypes, 5 males, 6 females: 



Texas: Austin, same data as allotype, 1 male, 1 female (RCF); Mar. 2, 1900, 

 A. L. Melander, labeled Pangaeus ? margo, 1 male (HMH); Nov. 23, 1900, 1 male 

 (USNM); labeled Pangaeus discrepans Ilhl. ?, 1 male (USNM); Mar. 25, 1900, 

 P. R. Uhler collection, 1 female (USNM); with label "Det. by D. Stone[r?]," 

 1 female (USNM); Mar. 11, 1945, M. Polhemus, 2 females (HMH). Buenc, 

 Van Duzee collection, 1 male (CalAc). 



California: El Centro, July 8, 1927, G. Linsley, 1 female (RLU). 



Discussion.— In general appearance, members of this species appear 

 to be simply large-sized individuals of discrepans, but can be separated 

 readily therefrom by the broader scutellum. 



Dallasiellus (Ecarinoceps), new subgenus 



Diagnosis. — The lack of a fine, marginal carina dorsally on the 

 juga enables one to recognize species of this subgenus from those in 

 the other two subgenera. 



