Geomyphilus ungulatus ( Fall, 1901 )

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 : 11-12

Geomyphilus ungulatus ( Fall, 1901)

( Fig. 51–55 )

Aphodius ungulatus Fall, 1901: 254 ; Schmidt 1922: 336 (subgenere incerto).

Aphodius (Chilothorax) ungulatus ; Dellacasa 1988: 212.

Geomyphilus ungulatus ; Gordon and Skelley 2007: 411 (lectotype designation).

Type locality. Pasadena, California [ U.S.A.].

Type repository. Museum of Comparative Zoology. Harvard University, Cambridge. MA ( U.S.A.) (type not examined).

Redescription. Length 5.0–6.0 mm; oblong, moderately convex, moderately shiny, glabrous. Head and pronotum piceous; clypeal margin and pronotal sides shadowy reddish; elytra dirty yellow with a lateral fuscous shade widened from shoulder to beyond the middle; legs pale brown; antennal club fuscous. Head with epistome feebly convex, rather evenly, moderately punctured; punctation distally almost granulo-rugose, finer and sparser on disc; clypeus broadly sinuate at middle, distinctly angulate at sides, thinly bordered, edge slightly reflexed, finely and sparsely fimbriate laterally; genae obtusely round, elongately ciliate, protruding from the eyes; frontal suture obsolete; front moderately evenly punctured. Pronotum transverse, feebly depressed near hind angles, dually punctured; large punctures, three times larger than small ones, close and coarse on sides, lacking on disc; small punctures dense and deeper on sides, sparse and superficial on disc; lateral margins slightly arcuate, thinly bordered, edge sparsely shortly fimbriate; hind angles obtuse; base almost regularly arcuate, thickly bordered toward hind angles, thinly bordered medially. Scutellum flat, coarsely densely punctured on basal half. Elytra oval, scarcely broader posteriorly, finely striate; striae superficially not closely punctured, subcrenulate; interstriae almost flat, strongly alutaceous on preapical declivity, finely irregularly punctured. Hind tibiae upper spur shorter than first tarsal segment; latter as long as following two segments combined. All claws very slender and exceptionally elongate. Male: head and pronotum relatively less convex and less coarsely punctured; aedeagus Fig. 54–55 . Female: head and pronotum relatively more convex and more coarsely punctured.

Material examined. U.S.A.: California: Cypress Co., 22.XI.1930, leg. A. C. Davis, hole of Citellus (1 ex., DCGI) ; Rt. 71 16.22 mi. fr. San Bernardino County line, Riverside Co. , 03.X.1972, leg. J. Saulnier, refuge chamber of Thomomys bottae (8 exx., DCGI) .

Distribution. U.S.A. (California).

Biology. Apparently a rodent associate species, collected from November to February.

Figures

Figures 51–55. Geomyphilus ungulatus (Fall, 1901) (Rt. 71 16.22 mi. fr. San Bernardino County line, Riverside Co., California, U.S.A.). 51) Epipharynx. 52–53) Habitus (morphological details and length ideogram). 54–55) Aedeagus (dorsal and lateral view).