Hallomenus (Hallomenus) scapularis Melsheimer, 1846

Johnston, M. Andrew, Warner, William B. & Pollock, Darren A., 2024, New Records and a Checklist of Melandryidae and Tetratomidae Known from Arizona, USA (Coleoptera: Tenebrionoidea), The Coleopterists Bulletin 78 (1), pp. 53-60 : 57

Hallomenus (Hallomenus) scapularis Melsheimer, 1846

( Figs. 3A, B )

Hallomenus scapularis Melsheimer 1846: 57 .

Literature Records: None.

Digital Records: Two records from Pima and Yavapai counties ( GBIF 2023).

Specimens Examined : “ USA: AZ: Apache Co. // Baldy Trailhead on//Hwy. 273;33.9661, // -109. 502;viii.15.2019 // ex. Sparassis radicata || Collector // W.B. Warner ” (4 ASUHIC) ; “ USA:AZ: Apache Co. // near Glabedon camp- // ground;33.9279,-109 //.4869; Aug. 14, 2019 // ex. Sparassis radicata || Collector // W.B. Warner ” (4 ASUHIC) ; “ Arizona: Apache Co. // 15.5 miles W Eagar // 34.0662, ­109.5443 // June 24, 2022 On // fence Kyle E. Schnepp ” (1 FSCA) ; “ Arizona: Cochise Co. // Rustler Park 8400’ // 31.9029, -109.2774 // August 16, 2019 under // pine bark Kyle E. Schnepp ” (1 FSCA, elytra entirely testaceous, possibly slightly teneral); “ USA:AZ: Coconino Co. // FS300, 2.4 km NW jct. // with FS105; 34.3321 // -110.9633; vii.30- viii. // 17.2019; VFlight inter- // cept trap; WB Warner” (13 ASUHIC) ; “ USA: AZ: Cochise Co. // Huachuca Mts. ; 0.8 rd. // mi. SW Reef; 31.4238 // ­110.2991; July 15­24 // 2018; VFlight intercept // trap; W.B. Warner ” (1 ASUHIC) .

Notes. New state record. This species is recognizable by its lighter-colored humeral spots. There is a moderate degree of color variation within the series examined where the base color can range from brown to piceous. The pronotum often has at least a distinct light median longitudinal stripe but it can also be nearly concolorous and the pronotum can be the same hue as the elytra or range from darker to lighter in color. The humeral spots vary slightly in size and contrast from the rest of the elytra. Coloration did not seem to covary with sex or any other obvious character. Five digitized records are only determined to genus (from Cochise and Pima counties and deposited in the Triplehorn Insect Collection at The Ohio State University) and could represent either this species or the following species.

Figures

Fig. 3. Tetratomidae spp., all scale bars = 1 mm. Hallomenus scapularis: A) Dorsal habitus, B) Lateral habitus. H. serricornis: C) Dorsal habitus, D) Lateral habitus. Tetratoma concolor: E) Dorsal habitus, F) Lateral habitus.