Eumenes (Eumenes) selisi Fateryga, 2024

Fateryga, Alexander V. & Proshchalykin, Maxim Yu., 2024, New records of the solitary Vespidae (Hymenoptera: Vespidae: Masarinae and Eumeninae s. l.) from Central Asia, with new synonyms and description of a new species of Eumenes Latreille, Zootaxa 5529 (3), pp. 551-569 : 557-560

Eumenes (Eumenes) selisi Fateryga , sp. nov.

( Fig. 3A–J )

Diagnosis. Among the Palaearctic species of the genus Eumenes Latreille , the new species is unequivocally characterized by the following combination of characters: body and legs with extensive yellow pattern ( Fig. 3A, C ); clypeus, scapus, T2, and S2 without long setae; female clypeus wider than long ( Fig. 3B ), male clypeus about 0.85× as wide as long ( Fig. 3D ); male F11 slender and acute, light ferruginous, with very minute setae on ventral surface ( Fig. 3E ); longest setae on occiput behind eye about as long as minimal width of upper lobe of eye; longest setae on propleuron about 1/2 as long as longest setae on occiput behind eye; basal third of scutum with two subtriangular lateral yellow spots in female ( Fig. 3F ) and often in male as well; punctation on scutum and T2 moderately coarse ( Fig. 3F, G ); apical margin of T2 strongly deflected upward ( Fig. 3A, C ); apical lamella of T2 hyaline and transparent ( Fig. 3G ); male S7+8 mostly without or with just a few punctures at center of distal half ( Fig. 3H ). The most similar species is E. asiaticus but the latter has a narrower clypeus in both sexes, a dark F 11 in the male, shorter setae on propleuron, a very coarse punctation on scutum and T2, and a dark apical lamella of T2.

Description. Female. Body length (from head to apical margin of T2) 11.5 mm; forewing length 8.5 mm. Head about 1.3× as wide as long in front view. Clypeus about 1.1× as wide as long, its apical emargination about 3.5× as deep as wide, taking about 1/3 of clypeal width, apical teeth rounded. Distance between lateral ocellus and occipital margin about as distance between lateral ocellus and eye. Occipital carina forming indistinct and very blunt angle slightly below center of gena, where gena as broad as F1 at distal end. Anterior pronotal carina complete. Scutum roundly convex. Scutellum very convex, raised above scutum and metanotum, with weak longitudinal furrow. Metanotum convex. Propodeum without distinct border between dorsal surface and propodeal concavity; median suture with small carina at lower 1/10 of propodeal concavity. Projection of submarginal carina of propodeum and apical end of valvula forming rounded right angle; ventral margin of valvula with blunt angle in basal half. T1 somewhat more than two times longer than apically wide, subapically with median longitudinal impression and two lateral transverse impressions. T 2 in dorsal view two times wider than T1 apically; in lateral view, basal part of T2 forming approximately right angle with S2; apical margin of T2 strongly deflected upward. Apical lamella of T2 transparent. S2 flat basally and moderately convex in distal half, with apical lamella similar to that of T2. T3–T5 and S3–S5 with less developed apical lamellae.

Clypeus sparsely punctate with shallow rounded punctures, interspaces several times exceeding puncture diameter, with reticulate microsculpture. Frons between antennal sockets punctate coarser and less regularly than clypeus, interspaces with less distinct microsculpture. Upper part of frons densely and coarsely punctate, interspaces very narrow, except ocular sinus where interspaces distinct and dull but still not reaching puncture diameter. Vertex less coarsely punctate than upper part of frons, interspaces sometimes reaching puncture diameter, rather shining; gena with somewhat finer punctures than on vertex and similar microsculpture. Dorsal surface of pronotum, scutellum, and metanotum with coarse punctures, interspaces usually not reaching puncture diameter, shining. Scutum with punctures coarser than on dorsal surface of pronotum, scutellum, and metanotum, interspaces very narrow, with indistinct microsculpture; some interspaces nearly reaching puncture diameter near parapsidal furrows. Tegula shining, with indistinct microsculpture only. Dorsal mesepisternum punctate similarly to dorsal surface of pronotum, scutellum, and metanotum. Ventral mesepisternum and mesepimeron with much coarser and denser reticulate sculpture, each puncture with several micropunctures on bottom, interspaces very narrow. Epicnemium rather shining, with few scattered shallow punctures and reticulate microsculpture. Metapleuron without punctures, with indistinct longitudinal striation and reticulate microsculpture. Dorsolateral surface of propodeum with rather coarse punctures similar to that on dorsal surface of pronotum, scutellum, and metanotum and shining interspaces. Lateral surface of propodeum mostly with denser punctures, interspaces not reaching puncture diameter, dull; sculpture of propodeal concavity similar to that on lateral surface. T1 with sparse punctures, interspaces shining, reaching puncture diameter but becoming denser towards distal end, where interspaces not reaching puncture diameter; apical margin of T1 distad from impressions shining, without punctures; ventral side of T1 with coarse shallow punctures with very narrow interspaces. Basal and central area of T2 densely punctate with deep punctures smaller than on central area of scutum, interspaces reaching puncture diameter, rather shining, with indistinct microreticulation; punctures becoming denser and finer towards distal end of T2 but very small area at apical margin impunctate. Apical lamella of T2 with basal row of rounded to slightly elongated punctures, taking 1/3–1/2 of lamella. S2 very sparsely punctate with shallow rounded punctures similar to that on clypeus, interspaces several times exceeding puncture diameter, with distinct reticulate microsculpture. Following terga and sterna mostly without distinct punctures, with micropunctation only.

Mandible with straight setae as long as diameter of F1 at base. Clypeus with strait curved setae as long as diameter of lateral ocellus. Scapus with setae much shorted than on clypeus. Frons, vertex, occiput, dorsal surface of mesosoma and lateral surface of T1 with strait setae approximately as long as minimal width of upper lobe of eye. Posterior side of propodeum and dorsal side of T1 with somewhat shorter setae. Longest setae on propleuron and fore coxa about 1/2 as long as those on occiput. Few erect and rather short setae on apical margins of T3–T6 and S2–S5 and tarsomere 5 of all legs. Other body parts mostly with short appressed setae only. All setae whitish.

Basal color black. Following parts yellow: distal half of mandible, labrum, clypeus, large spot on frons, anterior side of scapus, narrow band along inner margin of eye from clypeus to ocular sinus, narrow spot on upper part of gena, dorsal surface of pronotum (except lateral black spots near tegulae), two subtriangular lateral spots on basal third of scutum, large spot on dorsal mesepisternum, narrow spot on ventral mesepisternum, tegula, parategula, large lateral spots on scutellum (nearly fused), band on metanotum, large lateral spots on propodeum, large lateral spots submedially on T1 (fused with apical band), large apical band on T1 (emarginate medially at longitudinal impression and with brownish spots laterally at transverse impressions), S1, large lateral spots subbasally on T2 (fused with apical band), large apical band on T2 enlarged medially (but with subapical brownish spot); distal half of S2 (but with three longitudinal black spots), large apical bands on T3–T5 and S2–S5 (mostly with three emarginations each), small subapical spots on T6 and S6. Apical lamella of T2 hyaline. Legs mostly yellow except black dorsal side of coxa of all legs, ventral side of hind coxa, dorsal side of proximal half of fore and mid femur, dorsal side of hind femur and mostly black dorsal side of hind tarsus; ventral side of hind tarsus brownish. Wings fuscous; veins dark brown.

Male. Body length (from head to apical margin of T2) 10–11 mm; forewing length 7.5– 8 mm. Structure resembles that in female except the following: head about 1.25× as wide as long in front view; clypeus about 0.85× as wide as long, its apical teeth more pointed; distance between lateral ocellus and occipital margin distinctly exceeding distance between lateral ocellus and eye. F11 slender and acute. S7+8 flat and rounded apically. Genitalia as in Fig. 3I, J .

Sculpture similar to that in female but clypeus without distinct scattered punctures. Distal half of S7+8 with 2–3 rows of deep rounded punctures along lateral and apical margins and mostly without punctures at center.

Setae mostly as in female but denser on clypeus. F11 with very minute setae on ventral surface. S7+8 with short erect setae arising from bottom of each puncture.

Coloration mostly as in female but mandible entirely yellow; subtriangular lateral spots on basal third of scutum sometimes absent; large lateral spots submedially on T1 not fused with apical band; T7 and S7+8 black; mid and hind tarsomere 5 brownish but hind tarsomeres 1–4 yellow. F11 light ferruginous.

Material examined. HOLOTYPE: ♀, labeled “UZ, 2 km SW Simbulak / 40°38′37″N 66°36′18″E ” / 31.V.2023 Proshchalykin // Holotypus ♀ / Eumenes selisi / Fateryga [red label]” [ ZISP] . PARATYPES: UZBEKISTAN: 15 km NWW Pop , 40°53′45″N, 70°54′57″E, 20.IX.2022, 1 ♀, leg. M. Proshchalykin [ CAFK]; ibid., 20.IX.2022, 1 ♂, leg. M. Proshchalykin [ MSVI] ; 2 km SW Simbulak , 40°38′37″N, 66°36′18″E, 31.V.2023, 2 ♂, leg. M. Proshchalykin [ CAFK, FSCV]; ibid., 31.V.2023, 1 ♂, leg. A. Fateryga [ ZISP] .

Ethymology. The new species is named after Italian entomologist Marco Selis (Viterbo) in recognition of his great contribution to the systematics of the vespid wasps.

Distribution. Uzbekistan.

Figures

FIGURE 3. Eumenes selisi Fateryga, sp. nov. A, B, F, G, ♀, holotype; C–E, H–J, ♂, paratype. A, C, habitus in lateral view; B, D, head in front view; E, apex of flagellum; F, mesosoma in dorsal view; G, T2 in dorsal view; H, S7+8 in ventral view; I, left paramere and volsella in medial view; J, aedeagus in lateral view. Scale bars 1 mm.