CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 535 



Tenninalia: Genital segment shining, with scattered fine punctures, 

 apical margin straight; gonostylus as illustrated (fig. 245). 



Length of body: 8.17(7.93-8.66). 



Female: Similar to male. 



Head: Length-width ratio, 1.51(1.43-1.62) :2.31 (2.21-2.37); inter- 

 ocular width, 1.41(1.36-1.49). Antennal segments: I, 0.44(0.43- 

 0.46); II, 0.30(0.26-0.33); III, 0.51(0.50-0.53); IV, 0.49(0.43-0.53); 

 V, 0.49(0.43-0.53). Labial segments: I, 0.91(0.86-0.96); II, 1.23 

 (1.20-1.30); III, 1.07(1.00-1.16); IV, 0.91(0.83-1.00). 



Pronotum: Length-width ratio, 2.97(2.84-3.02): 5.2 1(5. 10-5.38). 



Scutellum: Length-width ratio, 3.53(3.44-3.60) :3. 58(3.42-3. 61). 



Length of body: 8.67(8.40-8.98). 



Type data.— Walker's type (BrM) is from Veracruz, Mexico. C. 

 obtusus (types in USNM) was described by Uhler from "Texas, 

 Arizona, and perhaps the same as that from Cape Saint Lucas, Lower 

 California." Distant's vestigiatus (type in BrM) was described from 

 San Jose, Costa Rica. 



Specimens studied. — 53 males, 71 females. 



United States: Arizona: Baboquivari Mts., Carr Canyon (Huachuca Mts.), 

 Chiricahua National Monument (Cochise Co.), Douglas, Dragoon, Fort Grant, 

 Globe, Patagonia, Ruby, Sabiuo Basin (Santa Catalina Mts.), Tombstone, Tucson, 

 Wickenburg, Wilcox; June to August. New Mexico: Tucumcari; July. Texas: 

 Ysleta; September. 



Mexico: Chihuahua: Camargo, Catarinas, Las Delicias, Matachic, Meoqui, 

 Parral, Primavera; July to September. Coahuila: Torre6n. Distrito Federal: 

 "Guadalu" [Guadalupe Hidalgo?]. Guanajuato: Gonzales "Jet.," Irapuato. 

 Guerrero: Balsas. Jalisco: Guadalajara, Las Fuentes, La Venta; July. Baja 

 California: Miraflores, Triunfo; July. Morales: Alpuyeca, Cuernavaca; June, 

 September. Nayaril: Tepic; July. Oaxaca: Salina Cruz; July. Sinaloa: Mazat- 

 Idn; August. Veracruz: "Pureza"; June. 



Cuba: San Bias; May. 



Guatemala: Antigua; June. 



Honduras: Zamorano (2,600 feet); July. 



Costa Rica: San Jos6; May. 



Discussion. — In previous literature this species generally has been 

 considered synonymous with ciliatus Palisot de Beauvois {mirahilis 

 auct., nee Perty). Although the two are admittedly very closely 

 aUied, they may be separated by the features given in the key to 

 species. In addition, the range of crassus is distinct from that of 

 ciliatus, being definitely more southern. C. obtusus Uhler has likewise 

 been considered a synonym of ciliatus, but both the description and the 

 type locality leave little doubt that it is the same form as crassus. It 

 is surprising that no one has previously recognized the identity of 

 Uhler's obtusus and Distant's vestigiatus. Both authors compared their 

 specimens to "mirabilis" and pointed out several of the same sepa- 



