Oxyomus mariateresae, Dellacasa & Dellacasa & Gordon, 2014

Dellacasa, Marco, Dellacasa, Giovanni & Gordon, Robert D., 2014, Oxyomus mariateresae new species of Mexican Aphodiini (Coleoptera: Scarabaeidae: Aphodiinae), Insecta Mundi 2014 (343), pp. 1-3 : 2

Oxyomus mariateresae new species

( Figures 1–5 )

Type locality. Llano de las Flores, 17°26’37.1”N- 096°30’13.2”W, Oaxaca, Mexico.

Type repository. Dellacasa collection, Genoa, Italy.

Description. Length 3.0–4.0 mm, oblong, convex, almost dull, pubescent. Dark brownish-grey, anterior angles of pronotum and legs dark brown; antennal club blackish. Head with epistome moderately convex medially, alutaceous, laterally evenly coarsely not very closely punctured; punctures cariose and those toward genae near imperceptibly haired; clypeus feebly sinuate at middle, round at sides, rather thickly bordered, edge anteriorly slightly reflexed, glabrous; genae obtusely round, sparsely ciliate, protruding from eyes; frontal suture finely impressed, somewhat raised at each side and at middle; front widely alutaceous, evenly coarsely punctured. Pronotum transverse, convex, faintly foveolate, longitudinally at middle and obliquely on each side, strongly alutaceous, evenly densely coarsely and somewhat irregularly punctured; punctures umbilicate, cariose, each one with rather short recumbent seta; lateral margins feebly arcuate, somewhat tapered before hind angles, thickly bordered, edge glabrous; hind angles well defined, obtuse; base moderately bisinuate, finely bordered, edge crenulate. Scutellum sunken, alutaceous, superficially confusedly punctured. Elytra moderately convex, feebly widened posteriorly, with deep narrow striae, catenulate on disc, strongly crenulate; interstriae alutaceous, convex, subcarinate medially, densely, coarsely confusedly punctured and with two median longitudinal rows of short yellowish recumbent setae. Hind tibial superior spur as long as first tarsal segment; latter nearly as long as following three combined. Male: fore tibiae spur stout and inwardly curved apically; aedeagus Fig. 2–3 . Female: fore tibial spur slender, acuminate and almost straight.

Type material. MEXICO: Oaxaca: Llano de las Flores , 17°26’37.1”N- 096°30’13.2”W, Carretera Tuxtepec, Oaxaca ; m 2600, 01.XII. 2003, leg. Martínez I. & M. T. Suarez (holotype, male, and allotype DCGI; 1 paratype, male FSCA) ; Las Cumbres, Carretera Zachila, San Miguel Peras, m 2500, 05.VIII. 2000, leg. Martínez I. & Reyes-Castillo P. (1 paratype, male DCGI) .

Distribution. Mexico (Oaxaca).

Etymology. Named in honor of one of its collectors, Maria Teresa Suarez, of Instituto de Ecologia, Xalapa, Veracruz, Mexico.

Biology. Almost unknown; the few specimens of the type series were collected in August and in December.

Figures

Figure 1–5. Oxyomus mariateresae, new species (Llano de las Flores, Oaxaca, Mexico). 1) Epipharynx. 2–3) Aedeagus (dorsal and lateral view). 4–5) Habitus (length ideogram and morphological details).