Selenophorus ellipticus Dejean, 1829

Rajab, Abubakarsidiq Makame, 2021, Indoor Radio Map localization WiFi fingerprint datasets, The Coleopterists Bulletin 75 (1), pp. 9-55 : 24-25

Selenophorus ellipticus Dejean

( Fig. 2 )

Selenophorus ellipticus Dejean 1829: 108 . Type locality: North America; restricted to New Jersey (Atlantic City, Atlantic Co.) by Lindroth (1968: 829). Types: MNHN.

Selenophorus ovalis Dejean 1829: 106 . Type locality: North America. Types: MNHN.

Celiamorphus opaculus Casey 1914: 143 . Type locality: New Jersey ( Atlantic City , Atlantic Co.) . Types: USNM #47873.

Celiamorphus currens Casey 1914: 143 . Type locality: New York ( Catskill Mountains ) . Types: USNM #47874.

Celiamorphus municeps Casey 1924: 117 , new synonymy. Type locality: North Carolina ( Southern Pines , Moore Co.) . Types: USNM #47878.

Descriptive Notes. Pronotum widest near base, with sides curved circularly toward strongly projected anterior angles, the anterior span distinctly narrower than base. Pronotal disc medially with well-impressed microsculpture, regularly isodiametric. Legs rufotestaceous. Dimorphism + ♂ 1 — ♀ 1. Median lobe with dorsoapical plate straight, apex moderately swollen. Endophallus in middle with single row of several contiguous spines. ABL 5.3–6.5 mm.

Range. CAN: ON; USA: AL, AR, CT, DC, FL, GA, IA, IL, IN, KS, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ,?NM, NY, OH, OK, PA, RI, SC, TN, TX, VA, WI; Mexico.

Remarks. Examination of the two female syntypes (USNM #47878) of Celiamorphus municeps [collector “Manee” = A. H. Manee, type locality in Southern Pines, North Carolina] established synonymy with S. ellipticus . The ABL’ s were 5.9 and 6.0 mm, longer than the 5.4 mm reported by Casey.

Selenophorus ellipticus and S. granarius are mostly sympatric and frequently confused because of their superficial similarity. The two species are distinguished in the identification key. The following additional characters are useful. Compared to S. granarius , the elytra of S. ellipticus have the seriate punctures much smaller; ABS1 longer, well impressed; luster duller (especially in females), closer to black, less aeneous; microsculpture mesh much finer, almost isodiametric. In S. granarius males the elytral mesh is particularly shiny, more open and somewhat stretched while in females the mesh is duller, finer, near isodiametric like that of S. ellipticus . Comparing the lateral edges to the basal edges of the metanepisterna, S. ellipticus has metanepisterna longer (ratio almost 2:1) and narrower posteriad. The antennomeres of S. ellipticus are proportionately longer, at least twice as long as wide.

Figures

Figs. 1–7. Habitus images and genitalia illustrations of Selenophorus species. 1) S. contractus, dorsal aspect; 2) S. ellipticus, dorsal aspect; 3) S. granarius, dorsal aspect; 4–7) S. nonellipticus, new species, dorsal and ventral aspects, male median lobe left lateral and dorsal views.