Canthochilum platycnemis Philips & Ivie

Philips, Keith & Ivie, Michael A., 2008, Seven new species of Canthochilum Chapin from Hispaniola (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 1730, pp. 27-42 : 35

Canthochilum platycnemis Philips & Ivie , new species

Figs. 6 , 12, 18, 24, 30, 42

Diagnosis. The clypeal margin with 6 teeth (in addition to the angulation at the clypeal-genal margin), flat elytral interspaces, and the metatibia parallel-sided in basal ½ and suddenly widened in apical ½ will separate this species from the others currently known.

Description (male). Body ovoid, reddish brown-black, legs and anterior edge of clypeus red ( Fig. 42 ); dorsal surface of head with moderate punctures, separated by approximately 1– 2 X their diameter, surface smooth throughout; clypeus with 6 teeth, mesal pair of teeth nearly parallel-sided, tips blunt, next laterad pair of teeth triangular, barely acute, third pair very small and obtuse, not much larger than the small clypeal-genal projections (Fig. 12); dorsal ocular area very large, eyes separated by a distance equal to 3X their transverse width (Fig. 12); elytral striae distinct, marked by double line on either side of a narrow flat-bottomed depression, punctures absent; elytral intervals broad, nearly flat, very slightly convex, very finely punctuate to slightly microrugose; elytron with lateral carina or relatively abruptly angulate margin between seventh and eighth striae, punctures of eighth stria coarse, continuous to apex; protibiae with 3 teeth, distally bent slightly forward from spur near tarsal insertion ( Fig. 24 ); protibial spurs broad, moderately hooked, reaching fourth tarsomere; metatibiae strongly curved near midpoint; mesosternal suture very slightly obtusely angulate mesally ( Fig. 18); pygidium margin complete, slightly convex, surface finely shagreened; aedeagus with basal piece apex with short thumb-like extension, parameres very reduced ( Fig. 30 ). Length: 4.6 – 5.8 mm, measured along midline from anterior margin of pronotum to tip of elytra.

Female. Unknown.

Types. HOLOTYPE MALE — DOMINICAN REPUBLIC: Puerto Plata, Rico El Murazo, north slope near; summit, 19-41N, 70-57W/ 910 m. 28 Nov 1992; J. Rawlins, R. Davidson; M. Klinger, S. Thompson; mesic deciduous forest [CMNNH]. PARATYPE: 1 MALE — same data as holotype [WIBF].

Etymology. The name is derived from the Greek platy, meaning broad or flat, and cnemis, the tibia, referring to the proleg of this species

Figures

FIGURES 1 – 6. Labia. 1. Canthochilum brodzinskyorum; 2. Canthochilum magnum; 3. Canthochilum matthewsi; 4. Canthochilum mimicum; 5. Canthochilum nebulonemi; 6. Canthochilum platycnemis.

FIGURES 41 – 42. Dorsal habiti. 41. Canthochilum darlingtoni; 42. Canthochilum platycnemis.

FIGURES 19 – 24. Protibia, dorsal view. 19. Canthochilum brodzinskyorum; 20. Canthochilum magnum; 21. Canthochilum matthewsi; 22. Canthochilum mimicum; 23. Canthochilum nebulonemi; 24. Canthochilum platycnemis.

FIGURES 25 – 30. Male genitalia, lateral view. 25. Canthochilum brodzinskyorum; 26. Canthochilum magnum; 27. Canthochilum matthewsi; 28. Canthochilum mimicum; 29. Canthochilum nebulonemi; 30. Canthochilum platycnemis.