Canthochilum matthewsi Philips & Ivie

Philips, Keith & Ivie, Michael A., 2008, Seven new species of Canthochilum Chapin from Hispaniola (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 1730, pp. 27-42 : 32-33

Canthochilum matthewsi Philips & Ivie , new species

Figs. 3 , 9, 15, 21, 27, 36, 45, 46

Diagnosis. This species can be differentiated from others by the clypeal margin with six teeth (excluding the angulation at clypeo-genal margin), the elytral interspaces rounded at top of elytral declivity, and the transversely subcarinate at the elytral apex in rear view.

Description (male). Body oblong, reddish-black, legs and anterior edge of clypeus reddish brown ( Fig. 36 ); dorsal surface of head with fine punctures separated by 4X diameter on anterior 1/2, becoming larger, separated by 1X diameter on vertex, near posterior margin and near eyes, surface shagreened near posterior margin only; clypeus with 6 teeth anteriorly, mesad teeth largest, acute but tips blunt, remaining teeth progressively smaller laterally, obtuse, clypeal-genal projections smaller, obtuse (Fig. 9); dorsal ocular area large, eyes separated by a distance equal to 3.5 to 4X their transverse width (Fig. 9); elytral striae distinct, deep, with fine punctures along length; elytral intervals distinctly but shallowly convex, row of very weak bumps down center, very fine scattered punctures visible under high magnification, surface coarsely shagreened; elytron with lateral carina or relatively abruptly angulate margin between seventh and eighth striae, punctures of eighth stria dorsad margin of epipleuron coarse, row evenly spaced; protibia with 3 teeth, distally bent strongly, obliquely, forward from tarsal insertion ( Fig. 21 ); protibial spur broad, moderately hooked, reaching third tarsomere; metatibia slightly arcuate; mesosternal suture anteriorly slightly obtusely angled ( Fig. 15); metasternum with a distinct longitudinally elongate depression at middle; pygidium entirely margined, nearly flat, surface finely punctured and smooth; aedeagus with basal piece with small finger-like projection attached at apex to basal paramere region, parameres small and triangular ( Fig. 27 ). Length: 2.9 – 3.6 mm, measured along midline from anterior margin of pronotum to tip of elytra.

Female. Differs from the male by the smaller protibial spurs that are less curved apically; the significantly less curved metatibia, and the less deep metasternal depression.

Types. HOLOTYPE MALE: DOM.REP: Par. Nac. Almando; Bermudez, Cordillera Cent.; Los Tablones, 1,220m; 0 3 SEP 1988, M. A. Ivie; K. Philips & K. A. Johnson [NMNH].

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. 1 MALE — same data as Holotype [WIBF]

1 MALE, 3 FEMALES — same data as Allotype [WIBF]. 1 MALE — 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 [WIBF]. 1 FEMALE — Colonia, 1.5; 1000m 1972/ Rep. Dominic.; J. & S Klapperich [CMNC]. 3 FEMALES — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 19.VII– 2.VIII.95, 1000m; trop.evgrn.for, FIT; S + J Peck, 95-32 [CMNC, TKPC]. 5 MALES, 7 FEMALES — 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, TKPC, WIBF]. 2 FEMALES — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 19.VII–2.VIII. 95, 1020m; trop.evgrn.for., FIT; S + J Peck, 95-34 [CMNC, TKPC]. 3 MALES, 3 FEMALES — 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]. 2 MALES, 3 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, MNHD, WIBF]. 2 MALES — DOM.REP: La Vega Prov.; PN A. Bermudez, Cienaga; 19.VII.95, 1000m; for. carrion traps; S + J Peck, 95-38 [CMNC, WIBF]. 1 MALE — DOM.REP: La Vega Prov.; PN Bermudez, 1 km W; Cienaga, 1050m; 2.VIII.95, forest litter; S + J Peck, 95-53 [CMNC].

Etymology. This species is named after Eric Matthews, in recognition to the tremendous advances he made in the study of West Indian Scarabaeinae .

Notes. This species is sympatric with Canthochilum magnum and both species can sometimes be found together in the same trap.

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.