Glaphyrus (Eoglaphyrus) mardjanyanae, Ghrejyan & Kalashian & Shokhin, 2023

Ghrejyan, T. L., Kalashian, M. Yu. & Shokhin, I. V., 2023, A new species of the genus Glaphyrus (subgenus Eoglaphyrus) (Сoleoptera: Scarabaeoidea: Glaphyridae) from Tajikistan, with notes on G. (E.) turkestanicus, Zoosystematica Rossica (Zoosyst. Rossica) 32 (1), pp. 8-15 : 9-13

Glaphyrus (Eoglaphyrus) mardjanyanae sp. nov.

( Figs 1–3 , 7, 9, 11, 13, 17 )

Holotype. Male, Tajikistan, Gorno-Badakhshan Autonomous Prov. , “Darvaz 1200 [m a.s.l.] Nulvand / Tdzhn. 27.6.[19]75 [Iablokoff-Khnzorian leg., according to handwriting; h, Cyrillic script] / HOLOTYPE, Glaphyrus (Eoglaphyrus) mardjanyanae sp. n., Ghrejyan, Kalashian, Shokhin det., 2022 [p, red paper]” ( IZAY). Specimen with slightly damaged pronotum and protibiae.

Paratype (allotype). Female, Tajikistan, Gorno-Badakhshan Autonomous Prov. , “Pamir, Nulvand, 28.VI.1975, M. Mardjanyan [leg.] [h, Cyrillic script] / Glaphyrus turcestanicus Sem. [h] det. O. N. Kabakov [p] 2003 [h] / ALLOTYPE, Glaphyrus (Eoglaphyrus) mardjanyanae sp. n., Ghrejyan, Kalashian, Shokhin det., 2022 [p, red paper]” ( ZISP) .

Description. Male. Body rather slender and flattened ( Figs 1, 2 , 7 ); length 12.6 mm, width 5.5 mm.

Coloration. Head, pronotum and scutellum dark metallic coppery red, with darkened clypeus; antennomere 1 black with fine reddish tint, following antennomeres blackish. Elytra light reddish brown with indistinct golden tint. Thorax coppery red. Basal portions of femora dark brown with more or less distinct coppery red reflection; other femora, tibiae and tarsi brown; tarsomeres of posterior tarsi darkened distally. Abdomen light brown.

Clypeus slightly widened anteriorly, with nearly straight lateral margins; anterior margin with strong medial and less protruding lateral teeth directed upwards. Surface of clypeus with dense, moderately rough punctures. Medially, clypeus with distinct carina continuing posteriorly from median tooth and nearly reaching fronto-clypeal suture, that being somewhat hidden by sculpture but visible. Punctation of frons slightly rougher than on clypeus; vertex medially nearly glabrous, with single rough punctures. Frons with dense irregular long brownish setae. Antennomere 1 large, distinctly curved, swollen distally, with dense long light brownish setae; antennomere 2 about 0.33 times as long as antennomere 1, swollen, with few setae shorter than in antennomere 1; antennomeres 3–7 with sparse short fine setae; antennal club subglobose, subequal in length to antennomeres 4–7 combined, with sparse short oblique setae. Mandibles with large dorsal tooth. Last segment of maxillary palps slightly narrowed distally, with truncate apex.

Pronotum moderately convex, widest at posterior one-fifth of length, with lateral margins widely arcuate, slightly convergent anteriorly and very slightly convergent posteriorly to obtuse posterior angles. Anterior margin nearly regularly arcuately concave, with weakly separated, shiny edging; posterior margin medially angularly arcuate, laterally very weakly sinuate, with shiny edging separated by distinct deep groove narrowly continued anteriorly along lateral margins and nearly reaching anterior angles. Disc anteriorly and laterally with dense rough punctures and long sinuous brownish hairs directed mainly laterally and posteriorly, with brushes of dense short thick brown setae near anterior angles. Posteriorly, about twofifths of disc almost glabrous, with sparse rough punctures along median part of posterior margin. Surface very finely reticulate, moderately shiny. Scutellum small, microreticulate.

Elytra moderately, nearly regularly convex, with suture slightly elevated in anterior threefifths of length, with lateral margins widely arcuate; elytral apices widely separate, each protruded into short, smoothly emerging but distinct tooth. Elytra with rather dense and small punctures being slightly rougher basally and laterally and with long yellowish adpressed setae directed posteriorly and somewhat laterally. Surface of elytra finely reticulate, with silky lustre. Epipleurae separated by sharp distinct carina nearly reaching apical teeth of elytra. Pygidium and propygidium with dense long adpressed yellowish setae nearly completely hiding finely and densely punctate surface.

Membrane of hind wings gradually darkening from base to apex; veins in bending zone wide and dark ( Fig. 9 ).

Thorax ventrally with dense long sinuous brownish yellow hairs. Metathorax medially with dense rough punctures, smoothed laterally. Protibiae proximal to lateral teeth (damaged in holotype) with nearly straight, irregularly serrate outer margin. Metafemora ( Fig. 11 ) moderately thickened, with irregular, rather sparse raspshaped punctures bearing long yellowish hairs. Trochanter ( Fig. 13 ) rather wide, with posterior margin slightly convex.

Abdomen with rather dense, moderately small and shallow punctures bearing long yellowish hairs hiding integument along lateral and posterior margins of ventrites. Ventrite 5 with distinct glabrous callosity and with row of fine short hairs posterior to it.

Paramera and endophallus as in Fig. 17 .

Female. Body ( Fig. 2 ) length 10.8 mm, width 5.5 mm. Head, pronotum anteriorly and laterally golden-green, clypeus darkened, disc of pronotum and scutellum golden-red, elytra yellow with fine greenish reflection, femora brown with indistinct reddish tint, tibiae and tarsi light brown, lateral teeth of protibiae and tarsomeres of hind tarsi blackened distally.

Clypeus with teeth slightly more pronounced than in male.

Pronotum wider than in male; punctation of head and pronotum finer and sparser, pubescence also sparser and somewhat shorter than in male.

Elytra wider than in male, their apices protruded into distinct blunt teeth. Surface of elytra similar to that in male, but sculpture with microreticulation slightly smoother and pubescence slightly sparser and shorter.

Ventrite 5 without callosity, apex of abdomen retracted under elytra; in dorsal view, apex of pygidium not reaching elytral apices.

Hind legs distinctly shorter than in male. Hind femora not thickened.

Comparison. By the structure of elytra with well pronounced epipleural carina, the new species belongs to the subgenus Eoglaphyrus , which so far had included two species, G. (E.) turkestanicus Semenov, 1889 and G. (E.) afghanistanicus Skrylnik et Pak, 2021 (comparison with the latter is made mainly based on the detailed description). Both species can be easily distinguished from the new one by the larger, wider and more convex body [in G. (E.) turkestanicus ( Figs 4–6 , 8 ), the length of body in the male is 13.5–20.4 mm, the width is 6.1–9.2 mm, and 13.0– 18.2 mm and 6.8–9.0 mm in the female, respectively; in G. (E.) afghanistanicus (see Skrylnik & Pak, 2021, figs 1–8), according to the description, the length of body in the male is 15.8–20.3 mm, the width is 7.1–8.3 mm, and 13.2–17.6 mm and 6.5–8.8 mm in the female, respectively]. The pronotum in both species is wider, its pubescence in the males is distinctly longer and denser than in G. (E.) mardjanyanae sp. nov. and a glabrous area in the posterior third of pronotal disc is smaller; in the females, punctation is denser than in the new species and the glabrous area is also smaller. The apices of the elytra of males in both G. (E.) turkestanicus and G. (E.) afghanistanicus are rounded or very slightly angulate; in the females, the apices are very slightly angulate, without teeth. Glaphyrus (E.) turkestanicus differs also in the somewhat narrower hind wings with the less pronounced veins in the bending zone ( Fig. 10 ). The trochanters in both species are slightly longer and narrower, with a weakly curved posterior margin [ G. (E.) turkestanicus : Fig. 14 ; for G. (E.) afghanistanicus , see Skrylnik & Pak, 2021, fig. 19]. The hind femora are somewhat thicker than in the new species, with denser and larger flat punctures ( Fig. 12 ). The new species differs from two others also in the structure of endophallus [in G. (E.) turkestanicus , Fig. 16 ; in G. (E.) afghanistanicus , Fig. 15 ]. A simplified key for identification of the species of Eoglaphyrus is given below.

Distribution. The Pamir Mountains in the Gorno-Badakhshan Autonomous Province of Tajikistan.

Habitat. Unknown.

Etymology. The new species is dedicated to the blessed memory of our friend and colleague, former curator of the Invertebrates collection of IZAY, Dr Margarit Mardjanyan, with our love and good remembrances.

Figures

Figs 1–6. Glaphyrus (Eoglaphyrus) spp., habitus. 1–3, G. (E.) mardjanyanae sp. nov. (1, 2 – holotype, male; 3 – allotype, female); 4–6, G. (E.) turkestanicus Semenov, 1889 (4, 5 – male from “Turkestan; 6 – lectotype of G. sogdianus Semenov, 1892, male). Dorsal (1, 3, 4, 6) and ventral (2, 5) views.

Figs 7–18. Glaphyrus (Eoglaphyrus) spp. 7, 9, 11, 13, 17, G. (E.) mardjanyanae sp. nov. (holotype, male); 8, 10, 12, 14, 16, G. (E.) turkestanicus Semenov, 1889 (male from “Turkestan”); 15, G. (E.) afghanistanicus Skrylnik et Pak, 2021 (from Skrylnik & Pak, 2021); 18, G. sogdianus Semenov, 1892, labels of lectotype. Habitus laterally (7, 8); hind wings (9, 10); metafemur (11, 12); trochanter (13, 14); paramera and endophallus (15–17).