Geomyphilus coronadoi ( Islas, 1955 )

Dellacasa, Marco, Dellacasa, Giovanni, Skelley, Paul E. & Gordon, Robert D., 2017, Systematic revision of the species of Geomyphilus (Coleoptera: Scarabaeidae: Aphodiinae) of Mexico and neighboring countries with description of a new Mexican species, Insecta Mundi 2017 (590), pp. 1-19 : 5

Geomyphilus coronadoi ( Islas, 1955)

( Fig. 6–10 )

Aphodius (Platyderides) coronadoi Islas, 1955: 495 ; Dellacasa 1988: 251.

Geomyphilus coronadoi ; Skelley et al. 2007: 4.

Type locality. Zempoala, Edo. Mor[elos]., Mexico.

Type repository. Instituto de Biologia, U.N.A.M. Mexico City (type not examined).

Redescription. Length 5.0– 5.5 mm; oblong, moderately convex, shiny, glabrous. Rufo-piceous; head distally, elytra margins and legs reddish, antennal club brownish. Head with epistome gibbous on disc and distinctly bent toward apical margin, densely regularly, moderately coarsely punctured; punctation somewhat confused distally; clypeus widely sinuate at middle, with small denticles feebly upturned on sides, faintly bordered, edge glabrous; genae obtusely round, elongately ciliate, distinctly protruding from the eyes; frontal suture not tuberculate, almost obsolete; front with punctation relatively sparser and more irregular than on epistome. Pronotum transverse, moderately convex, subregularly punctured, punctation fine and almost sparse on disc, somewhat irregular, coarser and denser on sides; latter feebly arcuate, thickly bordered, edge glabrous; hind angles obtusely round, base distinctly bordered. Scutellum with curved sides and with few large punctures on basal half. Elytra oblong, moderately convex; striae fine, subcrenulate, very superficially impressed toward apex; interstriae almost flat, distinctly, irregularly punctured. Hind tibiae upper spur shorter than first tarsal segment; latter longer than fol- lowing two segments combined. Male: fore tibiae spur large, somewhat explanate, abruptly downward bent and curved outwardly; aedeagus Fig. 9–10 . Female: fore tibiae spur slender, almost straight and regularly acuminate.

Material examined. MEXICO: México: Amecameca , 13.X.1955, leg. G. Halffter (1 ex., DCGI) ; Tlamacas , 29.X.1953. leg. A. Barrera, nido de Cratogeomys merriami (1 ex., DCGI) .

Distribution. Mexico ( México, Morelos).

Biology. An autumn active rodent associated species. One of the specimens examined was collected in the nest of Cratogeomys merriami (label data).

Figures

Figures 1–10. Illustrations of species. 1–5) Geomyphilus barrerai (Islas, 1955) (Amecameca-Tlamacas, Estado de México, Mexico). 1) Epipharynx. 2–3) Habitus (morphological details and length ideogram). 4–5) Aedeagus (dorsal and lateral view). 6-10) Geomyphilus coronadoi (Islas, 1955) (Amecameca, Estado de México, Mexico). 6) Epipharynx.7–8) Habitus (morphological details and length ideogram).9–10) Aedeagus (dorsal and lateral view).