CYDNIDAE OF THE WESTERN HEMISPHERE FROESCHNER 599 



Metapleuron: Peritreme abruptly terminated apically; lateral 

 margin of evaporatorium feebly concave ; lateral area impunctate. 



Legs: Not specially modified. 



Sternites: Distinctly alutaceous, with few punctures and small 

 rugae near spiracular area. 



Terminalia: Genital capsule finely alutaceous, obsoletely punctate 

 except for crowded punctures in lateral angles, apical margin broadly 

 and very shallowly emarginate; gonostylus as illustrated (fig. 270). 



Length of body: 5.91(5.61-6.42). 



Female: Very similar to male. 



Head: Length-width ratio, 0.98(0.96-1.00) : 1.58(1.56-1.60); inter- 

 ocular width. 0.92(0.90-0.93). Antennal segments: I, 0.31(0.30- 

 0.33); II, 0.36(0.36-0.40); III, 0.39(0.36-0.43); IV, 0.51(0.50-0.53); 

 V, 0.61(0.60-0.63). Labial segments: I, 0.54(0.53-0.56); II, 0.80 

 (0.76-0.83); III, 0.62(0.62-0.63); IV, 0.46(0.46-0.50). 



Pronotum: Length-width ratio, 1.64(1.56-1.75) :3.17(3.06-3.26). 



Scutellum: Length-width ratio, 2.30(2.22-2.40) : 1.98(1.89-2.02). 

 Length of body: 5.76(5.57-5.92). 



Type data. — Holotype male (USNM 64411) and allotype female 

 (USNM) both labeled "Rosario Lake, Rogagua, Boliv., W. M. Mann, 

 Oct. 28-Nov. 9, 1921. Mulford Biol. Expl., 1921-22." Paratypes, 

 4 males, 20 females, as follows: 



Bolivia: Same data as types, 7 females (USNM, RCF). Chapare, July 26, 

 1945, 400 meters, R. Zischka, No. 163, 1 male (USNM). Rurrenabaque, Beni, 

 W. M. Mann, October 1921, Mulford Biol. Expl., 1921-1922, 8 females, (USNM, 

 RCF). Santa Cruz de la Sierra, 450 meters, J. Steinbach, November 1910, 

 C. M. 4550, 2 females (Car). 



Brazil: Vigosa, Minas Gerais, April 1945, Carvalho, 1 male (Carv). Nova 

 Teutonia, January 1939, F. Plaumann, 1 female (JCL). Rio de Janeiro, 

 P. Wygodzinsky, 2 males (USNM, RCF); Ace. No. 2966, 1 female (Car). 



Colombia: No exact locality, intercepted at Hoboken, N.J., on wild orchid, 

 May 22, 1941, 1 female (USNM). 



Discussion. — The specific name refers to the distinctly alutaceous 

 sculpturing of the corium. 



Dallasiellus {Dallasiellus) bacchinus, new species 



Plate figures 44, 284 



DiAGNosis.^The weakly defined but definite subapical impression 

 near the apex of the head (indicated by dotted outline on fig. 44) can 

 be used to separate this species from all others in the subgenus. 



Description.' — Male : Elongate-oval. 



Head: Lengthabout three-fourths width, 1.2 1(1. 17-1. 30): 1.69 (1.62- 

 1.80); interocular width, 0.99(0.95-1.04); anterior outline rounded, 

 juga as long or slightly longer than clypeus and almost contiguous 



