Geomyphilus barrerai ( 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 : 4-5

Geomyphilus barrerai ( Islas, 1955)

( Fig. 1–5 )

Aphodius (Platyderides) barrerai Islas, 1955: 493 ; Dellacasa 1988: 251.

Geomyphilus barrerai ; Skelley et al. 2007: 4.

Type locality. “Tlamacas, E.do México ” [ Mexico].

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

Redescription. Length 5.0–6.0 mm; moderately elongate, moderately convex, weakly shiny, nearly glabrous. Reddish-brown; clypeal margin and pronotal sides paler; legs reddish-brown; antennal club dark brown. Head with epistome feebly gibbous on disc, superficially microreticulate, almost densely regularly punctured throughout; clypeus feebly evenly arcuately sinuate at middle, denticulate on each side, denticles more or less acute and more or less strongly upturned, finely bordered, edge shortly and sparsely bristled; genae obtusely round, densely elongately ciliate, feebly protruding from the eyes; frontal suture finely impressed laterally only; front relatively more coarsely punctured. Pronotum trans- verse, moderately convex, superfìcially microreticulate, almost regularly and rather densely punctured, punctation somewhat irregular and denser on sides, some more superficial toward hind angles; sides narrowly and feebly flattened; lateral margins thickly bordered, edge almost imperceptibly bristled, subsinuate and broadly inwardly emarginate before subtruncate hind angles; base faintly bisinuate, thickly bordered, border confusedly crenulate by coarse punctures. Scutellum distinctly punctured on basal half. Elytra rather shortly oval, moderately convex, strongly denticulate at shoulder, denticle outwardly directed; striae fine, superficially almost indistinctly punctured, not at all crenulate; inter- striae flat, superficially microreticulate, finely sparsely punctured, preapically with extremely short pale hairs. Hind tibiae upper spur nearly as long as first tarsal segment; latter slightly longer than fol- lowing three segments combined. Male: fore tibiae spur stout, subcylindrical, abruptly downward bent; aedeagus Fig. 4–5 . Female: fore tibiae spur slender, regularly conical, not so abruptly bent downward.

Material examined. MEXICO: México: Amecameca-Tlamacas , 27.X.1953, leg. A. Barrera, nido de Cratogeomys merriami (Th) (2 exx., DCGI) ; Querétaro: Municipio Pinal de Amoles, 3 air miles W Pinal de Amoles , 21°07′21″N, 099°40′17″W, m 2575, 10–13.XII.2013, leg. P. Skelley, P. Kovarik & R. Jones, Orthogeomys burrow (2 exx., FSCA) ; Tlaxcala: Malinche , 19°17′02.3″N, 098°02′46.9″W, m 3029, 20.VIII.2012, leg. A. Arriaga, nido de Tuza ( Cratogeomys merriami ) (4 exx., DCGI) .

Distribution. Mexico (Distrito Federal, México, Querétaro, Tlaxcala).

Biology. An autumn active rodent associated species. Specimens examined were collected in the nest of Cratogeomys merriami and Orthogeomys (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).