Oiceoptoma rugulosum Portevin 1903
Creators: name: Mullins, Patricia L.
name: Riley, Edward G.
name: Oswald, John D.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Silphidae
Oiceoptoma
Oiceoptoma rugulosum

description: Oiceoptoma rugulosum Portevin, 1903
Figs. 8, 22, 35, 48
Silpha inaequalis var. rugulosa Portevin, 1903: 333.
Diagnosis. Body length 13–16 mm, broadly oval to subparallel, entirely black. Head with small eyes, short row of long erect hairs behind each eye. Pronotum broadest at base, disc with short black hairs. Elytral apices conjointly rounded; humerus with tooth; disc tricostate, intervals distally with rugulose sculpturing; epipleuron narrow in posterior half with upper horizontal portion nearly equal in width to lower vertical portion, coloration not differing from remainder of body. Hind femur of males unmodified.
Range. North Carolina south to Florida, west to Texas (Peck & Kaulbars 1987).
Texas distribution. See Fig. 48. This species is widespread in the Texan and Austroriparian biotic provinces of Texas, with scattered records from the Balconian province and two records from the Kansan province (Lubbock County in the Texas Panhandle). It occurs in the following Texas vegetational areas: pineywoods, gulf prairies and marshes, post oak savannah, blackland prairies, cross timbers and prairies, south Texas plains, and Edwards Plateau. Confirmed counties (29): Anderson, Bell, Bexar, Blanco, Brazos, Comal, Dallas, Denton, Galveston, Gillespie, Houston, Jackson, Jefferson, Kerr, Lamar, Lee, Limestone, Lubbock, Nacogdoches, Navarro, Polk, Refugio, Robertson, San Jacinto, Travis, Tyler, Uvalde, Victoria, Walker. Collections: EGRC, PLM, TAMU, SHSU, SFAC, SRSU, TTU, UTIC.
Seasonality in Texas. See Fig. 35. Adults of this species have been collected in Texas in almost every month of the year. The adult seasonality profile of this species (based on 89 occurrence records: Appendix I) is bimodal, with large peaks in the spring and fall.
Biological Notes. Peck and Kaulbars (1987) state that this species is active in the cooler months of the year and is found in both forested and open habitats.
Data from examined labels. Collecting methods: UV light trap, pit-fall traps, dung beetle traps, hanging carrion trap, pit fall trap. Habitat records: sandy meadows [pit-fall trap], under bark and in dog food. Carrion records: snake [hanging carrion trap], deer, opossum, rabbit, cow, beaver, cat and snake. This species is found mostly in the eastern forested regions of Texas, with a few records from the plains regions of Texas. The Texas seasonality profile for this species shows a distinctly bimodal distribution with very few occurrence records from May to September, supporting the statement by Peck and Kaulbars (1987) that the species is active in cooler months. Life history data for this species are lacking.
description: Published as part of Mullins, Patricia L., Riley, Edward G. & Oswald, John D., 2013, Identification, distribution, and adult phenology of the carrion beetles (Coleoptera: Silphidae) of Texas, pp. 221-251 in Zootaxa 3666 (2) on pages 228-229, DOI: 10.11646/zootaxa.3666.2.7, http://zenodo.org/record/220054