Euboeus (Pelorinus) kasatkini, Nabozhenko, 2022

Nabozhenko, Maxim V., 2022, A taxonomic review of the genus Euboeus Boieldieu, 1865 (Coleoptera: Tenebrionidae: Helopini) of the Caucasus, Iran and Turkmenistan, Zootaxa 5159 (4), pp. 451-486 : 470-472

Euboeus (Pelorinus) kasatkini sp. nov.

( Fig. 13 )

Type material. Holotype, ♂ and two paratypes, ♂ and ♀ ( ZIN): Iran, Alborz Prov., Central Elburs Mts., Gachsar env., H= 2600–2720 m, 36°05ʹ51.88ʺN, 51°19ʹ46.53ʺE, 30.v.2016 (leg. D.G. Kasatkin) . Paratypes. 1♂, 1♀ ( HNHM): N Iran, 8 km W Gachsar , 6–8.vii.1977, “Loc. No. 396 Exped. Nat. Mus. Praha”, “ Probaticus huedepohli Kulzer, 1964 det. Z. Kaszab, 1983” ; 1♀ ( HNHM): Iran, Tehran Prov, Elburs-Gebirge, N Tehran, Shenshak , 2650–2900 m, 17–25.vi.1978 (leg. Martens and Pleper) ; 2♀ ( PCMN): Iran, Tehran Prov., Alborz Mts., Shemshak vill., road to Dizin , 3000 m, 1.vi.2014 (D. Murastyi) ;

Description. Male. Body slender, black, pronotum and head dorsally shiny, elytra lesser shiny ( Fig. 13A ). Measurements: Y = 1.44; PH w = 1.5; P w P l = 1.2; E l E w = 1.54; EH w = 1.86; EP w = 1.24; EP l = 2.38. Body length 12 mm, width 4.4 mm.

Head ( Figs 13C, E, F ). Anterior margin of epistoma slightly rounded and emarginated near angles. Head widest at eye level. Eyes moderately convex, circumocular impression narrow. Lateral margins of genae angularly rounded. Puncturation of head fine and sparse, interpuncture distance 1.5–2 times as long as puncture diameter. Ventral side of epicranium coarsely and densely punctured. Antennae comparatively short, with only three apical antennomeres, extending beyond base of pronotum, reaching less than 1/4 of elytral length.

Prothorax ( Figs 13C, E–G ). Pronotum widest at middle, transverse ( Fig. 13E ). Lateral margins of pronotum weakly evenly rounded; anterior margin weakly rounded at middle and slightly widely emarginated near corners; base weakly rounded at middle, slightly bisinuate. Antero-lateral corners not projected, obtuse, narrowly rounded at apex; postero-lateral corners weakly obtuse, pointed at apex. Lateral margins beaded; anterior margin beaded only laterally ( Figs 13E, F ). Disc of pronotum evenly weakly convex, not flattened along lateral margin, with weak oval impression on each lateral side and two small impressions at base. Puncturation of disc fine and sparse, puncture diameter 3–5 times as short as interpuncture distance; punctures round; punctures in impressions slightly larger ( Figs 13E, F ). Prosternum with moderate and very sparse simple puncturation ( Fig. 13C ). Prothoracic hypomera very narrowly weakly flattened along margin, with coarse and dense punctures among wrinkles; surface without microgranulation ( Fig. 13G ). Prosternal process smooth and shiny, with two terminal lines of punctures, slightly convex at apex, not beaded ( Figs 13C, G ).

Pterothorax ( Figs 13A, C ). Scutellar shield with straight margins, coarsely sparsely punctured. Elytra moderately elongate, widest at middle; punctures in striae fine, slightly elongate, widely spaced; punctures in interstriae fine and sparse, much smaller than strial ones ( Fig. 13A ). Anterior half of mesoventrite pubescent, coarsely and densely wrinkled. Mesepisterna, mesepimera and metepisterna with coarse and dense puncturation of large foveae; metaventrite and intercoxal part of mesoventrite finely and sparsely punctured and covered with short setae ( Fig. 13C ).

Legs. Trochanters with brush of short dark-reddish setae and one long seta ( Fig. 13C ). Basal third of femora with the same brush on flex side ( Fig. 13C ); another surface of femora with coarse puncturation and short setae. Pro- and mesotibiae straight, metatibiae very weakly bent ( Fig. 13B ). Pro- and mesotarsomeres 1–4 strongly widened, trasverse, pro- and mesotarsomere 1 wider than apex of protibia.

Abdomen ( Figs 13C, H–M ). Abdominal ventrites with fine and sparse puncturation and short setation, ventrite 5 with pubescence of long strong setae. Genitalia ( Figs 13H–M ). Apical part of the basal piece of aedeagus with longitudinal rugosity ( Fig. 13M ). Lateral sides of apical piece of aedeagus straight in apical two thirds ( Fig. 13M ).

Female ( Fig. 13D ). Body much more robust, elytra duller in specimen from the type locality and the same shiny as male in specimens from Shemshak). Antennae short, not reaching base of pronotum. Pronotum widest at middle or sometimes behind middle. Metatibiae straight. Measurements: Y = 1.44; PH w = 1.65; P w P l = 1.24–26; E l E w = 1.46; EH w = 2.13; EP w = 1.29; EP l = 2.41. Body length 11–16 mm, width 4–6.5 mm.

Etymology. The new species is named in honour of my friend, the collector of many specimens of Euboeus and other Tenebrionidae from Iran, Dr Denis Kasatkin (Rostov Branch of the Federal State Budgetary Institution All-Russian Plant Quarantine Centre, Rostov-on-Don, Russia).

Differential diagnosis. This species is very close to E. huedepohli from Demavend by the beaded lateral margins of pronotum ( Figs 11E, F , 13E, F ) and longitudinal rugosity in apical part of the basal piece of the aedeagus ( Figs 11M , 13M ), but differs by the following characters: body dorsally lesser shiny, pronotum without lacquer gloss; prothoracic hypomera with coarse puncturation among smooth wrinkles ( Fig. 13G ) (coarse longitudinal wrinkles in E. huedepohli ( Fig. 11G )); lateral margin of prothoracic hypomera very narrowly weakly flattened ( Fig. 13G ) (widely clearly flattened in E. huedepohli ( Fig. 11G )); metatibiae very weakly bent ( Fig. 13B ) (strongly bent in E. huedepohli ( Fig. 11C )); lateral margins of the apical piece of the aedeagus straight in apical half ( Fig. 13M ) (weakly rounded in E. huedepohli ( Fig. 11M )).

Figures

FIGURE 11. Euboeus huedepohli, habitus, details of structure. A = male, dorsally; B = male, ventrally; C = male metatibiae; D = female, dorsally; E = male, head and pronotum, dorsally; F = ditto, dorso-laterally; G = prothoracic hypomeron; H = male inner sternite VIII, ventrally; I = spiculum gastrale; J = ventral setose connective membrane between median lobe and tegmen; K = tegmen, ventrally; L = median lobe of aedeagus, ventrally; M = apical piece of aedeagus, dorsally.

FIGURE 13. Euboeus kasatkini sp. nov., habitus, details of structure. A = male, dorsally; B = male metatibia; C = male, ventrally; D = female, dorsally; E = male, head and pronotum, dorsally; F = ditto, dorso-laterally; G = prothoracic hypomeron; H = male inner sternite VIII, ventrally; I = spiculum gastrale; J = tegmen, ventrally; K = median lobe of aedeagus, dorsally; L = dorsal and ventral connective membranes between median lobe and tegmen; M = apical piece of aedeagus, dorsally.