Canthochilum magnum Philips & Ivie

Philips, Keith & Ivie, Michael A., 2008, Seven new species of Canthochilum Chapin from Hispaniola (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 1730, pp. 27-42 : 31-32

Canthochilum magnum Philips & Ivie , new species

Figs. 2 , 8, 14, 20, 26, 35

Diagnosis. The moderately large size (4.8–6.0 mm) and deep purplish black body color, together with four clypeal teeth, weakly indicated elytral striae, and lateral carina on the elytra will separate this species from the other known Hispaniolan Canthochilum .

Description (male). Body oblong, deep purplish-black, legs and anterior edge of clypeus reddish brown ( Fig. 35 ); dorsal surface of head with fine punctures separated by 4 to 8 X their diameter, surface distinctly shagreened throughout; clypeus with 4 teeth, mesal teeth acute, but tips blunt, outer teeth obtuse, clypealgenal projections obsolete (Fig. 8); dorsal ocular area large, eyes separated by a distance equal to 3.5 to 4X their transverse width (Fig. 8); first and eighth elytral striae distinct, second stria weakly visible, 3–7 apparent only as lines and not impressed, punctures absent; elytral intervals flat except for first and perhaps second which are very slightly convex, surface finely shagreened, very fine scattered punctures visible under high magnification; elytron with lateral carina or relatively abruptly angulate margin between seventh and eighth striae, punctures of eighth stria weak except for slightly stronger series near middle; protibia with 3 teeth, distally bent slightly obliquely forward from spur by tarsal insertion ( Fig. 20 ); protibial spur blunt and strongly hooked near tip, reaching fourth tarsomere; metatibia only very slightly curved; mesosternal suture anteriorly obtusely angled ( Fig. 14); pygidium entirely margined, slightly convex, surface finely punctured and shagreened; aedeagus with basal piece apex blunt and projecting ventrally, parameres elongate dorso-ventrally ( Fig. 26 ). Length: 4.0 – 4.8 mm, measured along midline from anterior margin of pronotum to tip of elytra

Female: Differs from the male in having the protibial spur smaller, apically acute and less curved at the tip; the metatibia very slightly, if at all, less curved than in the male.

Types. HOLOTYPE MALE, ALLOTYPE FEMALE: DOM.REP: Prov. Santiago; Par. Nac. A. Bermudez; Los Tablones, 1,290m; M. A. & R. O. Ivie colr; flight intercept trap/ on Rio Izquiera; 19º03’N, 70º50’W; 0 9 APR–07JULY 1992 [NMNH]. PARATYPES. 53 MALES, 15 FEMALES — same data as holotype [MNHD, NMNH, TKPC, WIBF]. 8 MALES, 6 FEMALES — DOM.REP: Prov. La Vega; Par. Nac. Armando Bermudez; Los Tablones, 1,245m, 19º03’; N, 70º50’W, 07JULY–25AUG; 1992, M. A. Ivie & D.S. Sikes/ flight intercept trap [TKPC, WIBF]. 5 MALES, 1 FEMALE — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienega; 19.VII – 2.VIII.95, 1000 m; trop. evrgn. For., FIT; S + J Peck, 95-32 [CMNC, TKPC, WIBF]. 1 MALE — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 19.VII–2.VIII. 95, 1010m; trop.evgrn.for., FIT; S + J Peck, 95-33 [CMNC]. 7 MALES — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 19.VII–2.VIII.95, 1100m; trop.evgrn.for., FIT; S + J Peck, 95-36 [CMNC, TKPC, WIBF]. 3 MALES, 2 FEMALES — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 21.VII–4.VIII.95 for.; carrion traps, 1000m; S + J Peck, 95-39 [CMNC, TKPC]. 3 MALES — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 19.VII.95, 1000m; for. carrion traps; S + J Peck, 95-38 [CMNC, WIBF]. 4 MALES, 1 FEMALE — DOMINICAN REPUBLIC: La; Vega, 2.5 km SW Pinar; Bonito, 18-51N,70-43W; 1430m. 26 Nov 1992 / J.Rawlins, R.Davidson,; M.Klingler, S.Thompson; riparian vegetation near; stream in pine woodland [CMNH, WIBF].

Etymology. This species was named “ magnum ” because of its large size, second only among the known Canthochilum to C. nebulonemi .

Notes. This species occurs at mid-elevations in the Cordillera Central.

Figures

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

FIGURES 34 – 37. Dorsal habiti. 34. Canthochilum brodzinskyorum; 35. Canthochilum magnum; 36. Canthochilum matthewsi; 37. Canthochilum mimicum.

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.