Eusphalerum torquatum

• Main Author: Zanetti, Adriano
• Format: Other/Unknown Material
• Language: unknown
• Published: 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Coleoptera; Staphylinidae; Eusphalerum; Eusphalerum torquatum; Canada; Newfoundland
• Online Access: https://zenodo.org/record/5190187; https://doi.org/10.5281/zenodo.5190187

Eusphalerum torquatum (Marsham, 1802) Silpha torquata Marsham, 1802. Eusphalerum torquatum; Moore and Legner 1975: 191; Zanetti 1987: 133; Herman 2001: 463. Material examined: (13 specimens). CANADA. Newfoundland 2 mm 2 ff Goulds 2.07.1985 leg. Morris (CNC); 2 mm 7 ff St. John’s 23.07.1949 leg. Brown (CNC). Published records. St. Johns and Topsail in 1965 (.); Nova Scotia in 1983 (CNC) (Brown 1967; Klimaszewski et al. 2013). Measurements. Head length: 0.24-0.29; head width: 0.51-0.68; pronotal length: 0.48-0.57; pronotal width: 0.68-0.83; elytral length: 0.94-1.09; elytral width: 0.88-1.05; length (clypeus to apex of elytra): 1.75-2.01; total length: 1.8-2.2. Description. Habitus as in Fig. 18. Head, pronotum, and elytra yellowish, elytra somewhat paler, neck often darkened; abdomen blackish or dark brown, prosternum yellowish, metasternum blackish; legs, antennae, and mouthparts yellowish, antennae darkened from antennomere 6-8. Head with prominent eyes, postocular carina present and well marked, temples short, strongly convergent caudad, medial margin of eyes without longitudinal wrinkles. Head flat, postantennal depressions very superficial and tentorial pits small. Between ocelli a small tubercle (vestigial ocellum?) is often present, as in some European specimens. Neck clearly separated from the head (Fig. 19). Punctation very superficial on strongly microsculptured, obsolete, ground. Antennae slightly elongate, antennomere 1 rather elongate, twice as long as wide, 2 ovoid elongate, 3 twice as long as wide, 4-7 longer than wide, 8-10 subquadrate, 11 twice as long as wide, rather ovoid, sharpened at apex. Pronotum transverse (ratio width/length = 1.4 on average), anterior margin wider than posterior in male, as wide as posterior in female, strongly convex in male, less convex in female, with a median superficial furrow in anterior two thirds, widest just in front of middle, lateral margins rounded at middle, convergent caudad in straight line, posterior angles marked and scarcely obtuse. Punctation dense but ...