Prosodes (Meropersina) kasatkini, Nabоz & Merkl & Kоvalev, 2018

Nabоz, Maхim, Merkl, Оttó & Kоvalev, Aleхey, 2018, A review of the genus Prosodes Eschscholtz, 1829 (Coleoptera: Tenebrionidae) of Iran, Zootaxa 4379 (4), pp. 451-483 : 472-476

Prosodes (Meropersina) kasatkini sp. n.

( Figs 12–14 )

Type material. Holotype (♂) and 9 paratypes (6 ♂♂, 3 ♀♀), Iran, West Azerbaijan Province, S of Piranshahr , 36°36.520' N, 45°08.355' E, 20–22.v.2015 (leg. D. Kasatkin, S. Kakunin). All types are deposited in ZIN.

Description. Male. Body slender, black, matt. Anterior margin of clypeus widely and weakly emarginate, lateral margins weakly rounded. Lateral margins of genae straight in anterior half, rounded at base. Lateral margin of head with distinct obtuse-angled sinuation between genae and clypeus. Head widest across eyes. Eyes convex, head width 1.42× wider than interocular space. Punctation of clypeus and frons fine and sparse (puncture diameters 2–4× as wide as distance between punctures). Punctation denser near eyes and genae (puncture diameters 1–2× as wide as distance between punctures). Occiput and temples with rasp-shaped punctation and dense pubescence of short subrecumbent light hairs. Vertex with wrinkles, sparse small granules and light recumbent hairs. Mentum transverse, oval. Cardo and stipes covered with strong light setae. Antennae not reaching base of pronotum. Ratio of length/width of antennomeres 2–11 as 8(9), 23(9), 14(10), 12(10), 12(10), 12(13), 9(12), 9(11), 9(10), 14(9). Antennomeres 1–10 covered with light hairs, antennomeres 1–7 covered with dense brown hairs, antennomeres 8– 10 with shorter and sparser hairs; antennomere 11 without light hairs.—Pronotum transverse (1.16× as wide as long), widest at middle, 1.44× as wide as head. Anterior margin of pronotum widely emarginate, straight near anterior margin. Lateral margins regularly and moderately rounded. Base of pronotum widely and weakly emarginate, straight at middle. Lateral margins and anterior angles of pronotum beaded, bead smooth near base, anterior margin and base of pronotum not beaded. Disc of pronotum weakly convex. Lateral sides and posterior angles of disc flattened. Punctation of pronotum fine and sparse (puncture diameters 2–4××as wide as distance between punctures), denser near anterior angles (puncture diameters subequal to distance between punctures). Prothoracic hypomera with rasp-shaped punctation and small longitudinal wrinkles, smoother near outer margins. Lateral margins of hypomera flattened in basal half.—Scutellum visible. Elytra elongate (2.17× as long as wide), 2.74× as long and 1.25× as wide as pronotum, 1.56× as wide as head. Elytra weakly convex, with smooth declivity in apical third, with fine, groove-like (not deeply depressed) wrinkles. Punctation of elytra sparser (puncture diameters 7–8× as wide as distance between punctures) than on pronotum. Epipleura with fine wrinkles and sparse small granules. Mesoventrite with wrinkles and light recumbent hairs, with beaded intercoxal process. Metaventrite with beaded intercoxal process, rasp-shaped, dense but irregular punctation (puncture diameters 0.5–0.7× as wide as distance between punctures). Mesepisterna, mesepimera and metepisterna with rasp-shaped punctation and short light hairs. Abdominal ventrites 1–4 with longitudinal wrinkles along lateral margins. Abdominal ventrites with moderately dense punctation (puncture diameters 1–2× as wide as distance between punctures), 1th and 2th ventrites with fine wrinkles. Intercoxal process of ventrite 1 square, with coarse wrinkles; ventrite 5 completely beaded except base and with unclear bead apically.—Legs slender. Ratio of lengths of femora, tibiae and tarsi of fore, middle and hind legs 6.2: 5.7: 4.5, 7.1: 6.8: 6.8 and 9.6: 9.2: 8. Ventral lamella of onychium between two tarsal claws of regularly and moderately rounded. Tibial spurs subequal in size. Protibiae bent, regularly widened from base to apex, with weakly emarginate inner side at apical third and without prominence. Mesotibia bent. Metatibiae S-shaped.—Aedeagus C-shaped, length 5.8 mm, width 1.48 mm. Basal piece 1.66× as wide as apical piece. Apical lobes of basal piece large, serrate (with 9–10 denticles), with longitudinal ridges laterally. Length of apical piece 2.2 mm, width 0.9 mm. Dorsal side of parameres regularly and slightly rounded, regularly narrowing at apex. Parameres with sensillar punctation apically. Visible part of medial piece (penis) with elongate granules and rounded membranous apex. Lobes of gastral spicule narrow, punctured. Rods of gastral spicule merged on apex, forming common trunk. Male sternite VIII covered with small setae denser in apical part, anterior margin widely emarginate, accessory gland of sternite VIII thin, rather long.—Body length 18–23.8 mm, width 6–7.8 mm.

Female. Body black, wider and more robust than that of male. Punctation of head and pronotum very fine. Pronotum transverse (1.35× as wide as long), 1.57× as wide as head. Elytra widest at middle (1.64× as long as wide), 2.8× as long and 1.23× as wide as pronotum, 1.93× as wide as head. Elytra with fine wrinkles, punctation of elytra sparser (puncture diameter 4–5× as wide as distance between punctures). Legs shorter than those of male, protibiae not emarginate in inner side, metatibiae not S-shaped.—Ovipositor wide, with narrow apical lobes. Ventral side of apical lobes with long setae. Anterior margin of proctiger rounded, with long setae. Trunk of ventral spicule long. Basal duct of spermatheca long, gland of spermatheca short. Reservoirs of spermatheca thin, 1 st shorter than 2nd. Trunk of ventral spicule long.—Body length 20.1–21 mm, width 9.1–9.5 mm.

Etymology. The species is named in honour of our colleague and one of the collectors of the new species, Denis Kasatkin.

Diagnosis. Prosodes kasatkini sp. n. is similar among the described species to Prosodes vigi G. Medvedev et Merkl, 2005 and Prosodes laevigata Baudi di Selve, 1874 in the fine, not deeply depressed wrinkles on male elytra. The male of P. kasatkini sp. n. differs from that of P. laevigata by dull body ( P. laevigata has strongly shiny body), narrowly and weakly beaded lateral margins and not flattened lateral sides of wider pronotum, and denser net of elytral microwrinkles. The female of P. kasatkini sp. n. differs from that of P. laevigata and P. vigi in the groovelike, not depressed wrinkles (both other species have weakly depressed wrinkles); from P. vigi additionally in the more slender body. The new species differs from all other species of the subgenus Meropersina in the absence of deeply depressed wrinkles on elytra, from P. cordicollis Allard, 1883 and P. vermiculosa Reitter, 1909 in the absence of sharp prominence in inner side of male protibiae. Prosodes kasatkini sp. n. is the most similar to P. shokhini sp. n., differences from which see in the diagnosis of P. shokhini sp. n.

Figures

FIGURE12. Prosodes kasatkini sp. n. (ZIN). A, holotype, male, dorsalview; B, paratype,female, dorsalview; C, sculptureof female elytra; D, male protibia; E, gastral spicula; F, male sternite VIII, G, ventral spicula; H, female genital tubes (v—vagina, bds—basalduct of spermatheca, r—reservoirs, g—accessory gland of spermatheca).Not to scale.

FIGURE 13. Prosodes kasatkini sp. n. (ZIN), aedeagus. A, dorsal view; B, ventral view; C, lateral view; D, apical piece, lateral view; E, same, ventral view; F, same, dorsal view.

FIGURE 14. Prosodes kasatkini sp. n. (ZIN), ovipositor. A, dorsal view; B, ventral view; C, lateral view; D, apical lobes, dorsal view, E, same, ventral view, F, same, lateral view.