Selenophorus rileyi Messer and Raber, 2021

Rajab, Abubakarsidiq Makame, 2021, Indoor Radio Map localization WiFi fingerprint datasets, The Coleopterists Bulletin 75 (1), pp. 9-55 : 39-40

publication ID 10.21227/ybfj-me86

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scientific name

Selenophorus rileyi Messer and Raber

new species

Selenophorus rileyi Messer and Raber , new species ( Figs. 40–43)

Type Material. Holotype male [deposited in TAMU] labeled: “ USA: TX: Cameron Co., Sabal Palm Grove , V-29/ VI-27-2009, B. Raber & D. Heffern // 25.849°N 97.417°W, UV light trap, palm forest core”; pinned with holotype label [red paper topmost] and genitalia in glycerin vial GoogleMaps . Paratypes [yellow paper] as follows. Capture method is at light, mostly UV light, unless noted otherwise. USA: TEXAS: Cameron Co.: Laguna Atascosa NWR, 25 IV–15 V 2010 (1♂ BTRC) ; Hidalgo Co.: Santa Ana NWR, 31 V–27 VI 2009 (1♂ BTRC) ; Starr Co.: Chapeno 6 X 2017 (1♂ 1♀ BTRC), 1 X 2020 (1♀ DAHC) . MEXICO: Jalisco: Chamela Biol. Sta. , 95m, 19 29.9N 105 02.7W, 22–23 VI 2013 (2♀ CMNH) GoogleMaps ; Sonora: 7.2 mi E Alamos , 24 VIII 1964 (2♀ MPM) ; 2 mi. W Mocuzari , 3 IX 1964 (1♀ MPM) ; 1.5 mi. N Navojoa , 25 VIII 1964 (1♀ MPM) ; [following reposited at UASM as species UASM-17 by George E. Ball] Sinaloa: Mazatlan , 15–20 VIII 1962, at light (5♂ 12♀ UASM, 2♂ 2♀ PWMC, 1♂ DAHC, 1♀ TAMU, 1♀ BTRC) ; El Cameron , 16 VIII 1962, “near beach” (1♀ UASM,

1♀ PWMC); 18 VIII 1962, “mango grove” (2♀ UASM) . Tabasco: 22 V 1972, “UV light” (1♂ 1♀ UASM) ; Veracruz: 26–30 VI 1963 (1♀ UASM) ; 4 VII 1963 (1♂ UASM) ; [following reposited at USNM] Michoacán: Arteaga , 10 IX 2004 (1♀) ; La Huacana , 9 IX 2004 (1♀) ; Puebla: Tehuitzingo , 1–2 IX 2004 (1♂ 3♀) .

Description (Holotype). Adult male. Size: ABL 6.0 mm. Color/Luster: Dorsum uniformly piceous, shiny metallic luster.Antennomere 1 rufous, distally piceous. Femora rufous, tibiae distally and tarsi darker. Venter uniformly piceous to black, contrasting with rufous epipleura of pronotum and elytra. Microsculpture: Entire dorsum with mesh distinctly impressed, regular to irregular isodiametric. Venter with mesh irregularly isodiametric to moderately stretched. Head: HW/PW = 0.75. Eyes moderate in size and convexity. Labrum proportionately long and narrow relative to clypeus. Pronotum: PL/PW = 0.68. Widest well before middle. Base distinctly narrower than base of elytra. Lateral sides quite rounded anteriorly, becoming straight and subparallel toward subrectangulate hind angles. Base and front of pronotum with coarse setigerous punctures. Anterior border straight, anterior angles only slightly projected. Elytra: Striae moderately impressed, seriate punctures moderately large, subfoveate. ABS1 long, intersecting elytral stria 1. Intervals slightly convex without distinct punctules. Intervals 8 and 9, as well as inner intervals at apex, punctulate and pubescent. Venter: Prosternum entirely pubescent; much of venter covered with conspicuous setae. Prosternal process like that of subgenus. Ventrite 6 with 1 pair of anal setae. Legs: Metatarsi length and features of tarsi are those of the species group. Male protarsi and mesotarsi typical of genus. Median lobe: Evenly curved in lateral view; without evident narrowing behind bulb in dorsal view. Dorsoapical plate short, tapered abruptly and subacutely to rounded tip, not bent, without lip. Endophallus without spines.

Variation. ABL 6.0–7.0 mm. Some specimens from Texas and most from Mexico with slight lightening of the elytral apex and distal 1/3 of the first interval. Females with tarsi unmodified; with 2 pairs of anal setae.

Etymology. The specific name honors Edward G. Riley, Assistant Curator, Texas A&M University (retired), for his patient mentorship of the second author and his leadership during the LRGV Beetle Survey project by which many of the beetles in this study were acquired, including the Texas specimens of this species.

Diagnosis. Selenophorus rileyi is distinguished from other Nearctic Selenophorus species by the dark elytra with strong metallic luster; pronotum with base and front coarsely punctate, hind angles sharply subrectangular; elytra with subfoveate seriate punctures and dense pubescence of intervals 8 and 9. Specimens in various collections labeled “ Selenophorus sp. UASM-17” are conspecific with S. rileyi .

Type Habitat. Holotype was collected at the Sabal Palm Sanctuary ( Fig. 75) utilizing ultraviolet light traps placed in the old growth “core” palm jungle. The sanctuary is in a bend of the Rio Grande River south of Brownsville, TX. The 527-acre preserve comprises the largest tract of Sabal mexicana Mart. ( Arecaceae ) jungle left in the USA and includes about 32 acres of old growth jungle. Specimens were collected in ultraviolet light traps placed in the “core” over a two-year period. Additional associated Selenophorus species collected there were S. balli , S. elytrostictus , S. fatuus , S. intermedius , S. mexicanus , S. palliatus , S. striatopunctatus , and S. undatus . Texas collection sites also include Laguna Atascosa NWR, Santa Ana NWR and Chapeno in Starr County.

Range. Selenophorus rileyi was found widely in Mexico from Mazatlan on the Pacific coast to Veracruz on the Bay of Campeche, then extending 550 miles northward to the LRGV in Texas. Most records are near coastal areas, but a few records extend to the foothills of the Cordillera Volcánica in Mexico reaching elevations of 1,035 m .


The Cleveland Museum of Natural History


Milwaukee Public Museum


University of Alberta, E.H. Strickland Entomological Museum