Canidia Thomson

Wappes, James E. & Lingafelter, Steven W., 2005, (Coleoptera: Cerambycidae, Lamiinae, Acanthocinini), Zootaxa 927, pp. 1-27 : 3

Genus Canidia Thomson

Canidia Thomson, 1857: 193 ; Thomson, 1860: 7, 14; Lacordaire, 1872: 774; Bates, 1881: 409; Dillon 1955: 146; Dillon 1956: 105; Gilmour 1965: 581; Monné and Giesbert, 1993: 242; Monné and Giesbert, 1995; Monné and Hovore, 2004.

Type species: Canidia cincticornis Thomson, 1857 , by monotypy.

Canidiopsis Dillon, 1955: 179 , Type species: Canidia mexicana Thomson, 1860 , by original designation. New synonymy.

Pseudocanidia Dillon, 1955: 176 , Type species: Pseudocanidia cuernavacae Dillon, 1955 , by original designation. New synonymy.

Form moderately small, subcylindrical to cylindrical. Head impunctate, strongly convex, median line extending length of front onto vertex, front narrowed below eyes, mandibles small, feebly arcuate; genae at least subequal to lower eye lobes, eyes finely faceted, upper lobes small, widely separated; antennal tubercles prominent, divergent; antennae slender, eleven­segmented, longer than body in both sexes, scape elongate, extending to or beyond pronotal tubercles, with a distinct apical process, third segment equal to or slightly longer than scape, remaining segments gradually decreasing in length. Pronotum subcylindrical, wider across tubercles than long, sides acutely spined before basal impression; base shallowly to moderately impressed; disk convex, with or without low calluses, surface finely to densely punctate; prosternum narrow, apex expanded to close coxal cavities behind; mesosternum with intercoxal process 2–3 times width of narrowest point of prosternal process; episternum narrow, subparallel. Elytra 2–3 times as long as broad, sides subparallel to slightly tapering; apices obliquely truncate to emarginate; pubescence dense, appressed, longer suberect setae scattered. Most species with a variably developed costal crest at base, accented with longer setae. Legs with femora clavate; tibiae slightly arcuate; tibial spurs short; tarsi with first segment longest; claws simple.

Remarks: This genus is characterized by the densely pubescent cylindrical body form, rounded pronotum armed laterally with acute spines, and well developed apical process on the antennal scape. Dectes is closely related to Canidia but differs primarily by the structure of the prosternal process which is very narrow, and not expanded at the apex to close the procoxal cavities, by the lack of an apical process on the scape, and by the lack of a basal elytral crest which is present in most species of Canidia .