Hedychridium sibiricum Rosa, 2017

Rosa, P., Proshchalykin, M. Yu., Lelej, A. S. & Loktionov, V. M., 2017, Contribution to the Siberian Chrysididae (Hymenoptera). Part 2., Far Eastern Entomologist 342 (342), pp. 1-42 : 32-34

Hedychridium sibiricum Rosa , sp. n.

Figs 12A–F , 13K, L

SPECIMENS EXAMINED: Holotype – ♀, Russia: Tuva Rep., south slope of W Tanu-Ola near Soglyi Village , 2000–2800 m, 15–20.VI 2003 [ ZIN] . Allotype – ♂, same collecting data [ ZIN] . Paratypes: 3 ♂, 1♀, same data as holotype [ GLA, PRC] .

DIAGNOSIS. Hedychridium sibiricum sp. n. resembles H. purpurascens (Dahlbom, 1854) , H. alpestre Semenov et Nikol’skaya, 1954 and H. trossulus Semenov,

1954 for habitus, coloration and long whitish setae on head and metasoma. Nevertheless, it is easily recognizable through the punctured scapal basin, without broad cross-ridging ( Fig. 12A ) (largely medially cross-ridged in the other three species);

deep and large punctuation on mesoscutum and mesoscutellum (various in the other shchalykini sp. n.; C, D – H. leleji sp. n.; E, F – H. loktionovi sp. n.; G – H. cupreum (Dahlbom) , Czech Rep.; H – H. asianum Linsenmaier , Altai; I – H. cupreum ; J – H. asianum .

Scale bar = 0.5 mm.

species); short setae on metanotal margins (longer in the other species); large size and shape of genitalia (vs. shortened). Shape of genitalia ( Fig. 13K, L ) and punctuation on face place this species within the H. ardens group s. str., in which, however,

as for external features or colour pattern no other species resembles H. sibiricum

sp. n.

DESCRIPTION. Female. Body length 5.5–6.0 mm. Fore wing length 3.3–3.5

mm. OOL = 2.2 MOD; POL = 1.9 MOD; MS = 0.7 MOD; relative length of P: F1:

F2: F3 = 1: 1.6: 1.0: 0.8.

Head. Face nearly flat, densely punctate, with contiguous punctures on frons

( Fig. 12A ); size of punctures decreasing from frons to clypeus; with minute punctures on lower face and malar spaces; scapal basin medially impunctate. Clypeus mostly polished, subantennal space 1.5 MOD. Facial longitudinal midline deep and evident only on upper scapal basin ( Fig. 12A ). Post-ocellar vertex with small, even and dense punctures. Ocellar triangle isosceles and posterior ocelli with pit along external margin.

Mesosoma. Pronotum, with coarse, irregularly sized and contiguous punctures.

Mesonotum and mesoscutellum with double punctuation due to punctures of two sizes, with polished interspaces, up to 1 PD apart. Mesopleuron with uneven punctures ( Fig. 12B ). Metascutellum with large, contiguous areolate punctures. Propodeal teeth triangle shaped, with acute teeth ( Fig. 12C ). Forewing basal vein 1.5 times as long as RS stub, medially distinctly bending.

Metasoma. T1, T2 and T3 with dense, minute punctures; T1 anterior declivity medially impunctate; T2 with posterior margin impunctate ( Fig. 12D ); T3 with narrow apical brownish rim.

Coloration. Head and mesosoma metallic green; propodeum and mesopleuron partially green-blue to bluish, with weak golden-green hue; metasoma dorsally metallic red, ventrally black with a large and defined golden-red spot on S2. Legs metallic green with brown tarsi, tarsi on the outer surface sometimes darkened, with or without a slightly metallic reflection; scape and pedicel metallic green, flagellum black. Tegulae non-metallic.

Vestiture. Body with dense, whitish, relatively long setae (1.5 MOD long), on metasoma laterally with short, both appressed and erect longer setae (1.5 MOD).

Legs with short erect setae.

Male. Similar to female, but with more olive-green color on mesosoma and pale brown tarsi. Silvery pubescence, fine, dense on outer third of lower face. Genital capsule distinctly large (0.9 mm) as in Fig. 13K, L .

DISTRIBUTION. Russia (Tuva Rep.).

ETYMOLOGY. The specific name sibiricum (male, adjective) refers to the type locality in Siberia.

Figures

Fig. 12. Hedychridium sibiricum Rosa, sp. n., holotype, ♂: A – head, frontal view; B –

Fig. 13. Male genital capsule. A – Hedychridium ardens (Coquebert), Khakassia; B – H.