420 SUBFAMILY X. CURCULIOXIXJE. 



KEY TO SUBTR1BES OF CEUTORHYNCHINI. 



a. Tarsi with a single claw; upper surface of pygidium of female deeply 



excavated; larger, 4.5 5 mm. Subtribe I. MONONYCHI, p. 426. 



aa. Tarsi with two claws; pygidium not excavated but carinate in front 



and with transverse line for reception of tips of elytra; smaller, 



less than 4 mm. 



b. Pectoral groove extending behind the front coxa? into the mesoster- 



num; second ventral segment prolonged at sides, cutting off the 



third in most of the genera. Subtribe II. CCEUODES, p. 427. 



66. Pectoral groove not extending behind the front coxae, sometimes 



wanting; second ventral never prolonged. 



c. Beak longer and slender, usually half the length of body; eyes 

 wholly or partially concealed by postocular lobes. 



Subtribe III. CEUTORHYNCHI, p. 439. 



cc. Beak stout, usually short; postocular lobes wanting (except in 

 genus CcrJogaster). Subtribe IV. PHYTOBII, p. 454. 



Subtribe I. MOXOXYCHI. 



In addition to the characters above given, onr single species 

 of this group has the beak long, cylindrical and in repose resting 

 in a deep groove which extends through both pro- and mesosterna 

 into the metasternum ; eyes partially hidden by postocular lobes ; 

 funicle 7-joiuted ; second ventral segment as long at middle as 

 third and fourth united; legs slender, tibia 1 obliquely fringed at 

 the tip. 



I. MONONYCHUS Germ., 1824. (Gr., "one" + "claw.") 



659 (8825). MONONYCHUS VULPECULUS Fab., 1801, 450. 



Broadly ovate. Black, shining; under surface, except the middle of 

 third and fourth ventrals, sides of thorax and basal third of suture densely 

 clothed with oval whitish-yellow scales; antenna? pale brownish-yellow. 

 Occiput and thorax coarsely, densely and shallowly punctate. Elytral 

 stria? shallow, punctate; intervals wide, flat, each with one or two rows of 

 large punctures. Male pygidium protuberant, fifth ventral strongly fove- 

 ate, middle and hind tibia? clawed at tip; female, pygidium strongly exca- 

 vated, fifth ventral very convex, tibiae unarmed. Length 4.5 5 mm. 



Common throughout northern Indiana wherever its food 

 plant, the blue flag, Iris vcrsicolor L., occurs ; not taken south of 

 Marion Co. ; May 21 June 29, mating on the former date. Fre- 

 quent near New York City, May to September. Ranges from New 

 England and Canada to Wisconsin, south to Georgia. The larva 1 

 breed in the seed pods of 7m while the adult feeds upon the 

 pollen and buds. Our largest member of the tribe. The upper 

 surface is largely naked, though Pietz states that it is ''densely 

 clothed with black scales." 



