Hedychridium gabriellae 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 : 19-21

Hedychridium gabriellae Rosa , sp. n.

Figs 7A–F , 13G, H

SPECIMENS EXAMINED. Holotype – ♀, Russia: Tuva Rep., 20 km SSW

Erzin, Tore-Khol’ Lake, 30.VI–3.VII 2013 (VL, MP) [ZIN]. Allotype – ♂, same date as holotype [ ZIN] . Paratypes [ IBSS, PRC]: 20 km SSW Erzin, Tore-Khol’

Lake, 30.VI–3.VII 2013, 9 ♀, 3 ♂ (VL, MP); 27 km SSW Erzin, Tore-Khol Lake ,

12.VII 2014, 1 ♀ (AL, MP, VL) .

DIAGNOSIS. Hedychridium gabriellae sp. n. is similar to H. rhodinum Semenov ,

H. propodeale sp. n. and H. longigena sp. n. for general habitus and coloration.

However, it differs through these distinctive features: mid- and hindfemur, inner side of forefemur, and tarsi yellowish; femura may be darkened on outer side, with or without slightly metallic reflection; antennae ventrally yellowish to light brown;

clypeus narrow, subantennal space <1.0 MOD; body entirely shining red, including propodeum and anterior declivity of T1; punctures on mesosoma shallow and separated by impunctate and polished interspaces, 0.2–1.0 PD apart; POL (2.0 MOD)

larger than other species.

DESCRIPTION. Body length 3.0– 3.5 mm. Fore wing length 2.2–2.3 mm.

Female. OOL = 1.7 MOD; POL = 2.0 MOD; MS = 0.8 MOD; relative length of P:

F1: F2: F3 = 1: 0.9: 0.7: 0.6.

Head. Face nearly flat, evenly convex from midocellus to upper face; face densely punctate throughout, with contiguous, aligned punctures forming wrinkles converging to medial line; punctuation dense with minute punctures on lower face;

scapal basin medially with cross-ridging from middle to the basal half. Clypeus short, subantennal space <1.0 MOD ( Fig. 7A ). Facial longitudinal midline only visible on upper scapal basin. Punctuation on post-ocellar vertex with small, even and dense punctures. Ocellar triangle isosceles; posterior ocelli with large pit along external margin ( Fig. 7C ).

Mesosoma. Pronotum, mesonotum and mesoscutellum with shallow and mediumsized punctures, with impunctate and polished interspaces ( Fig. 7C, D ).

Metascutellum with large areolate punctures. Propodeal teeth narrow and digitate,

( Fig. 7D ) obliquely subtruncate at apex. Forewing basal vein 1.2 times as long as RS

stub, almost straight.

Metasoma. T1 and T2 with dense, contiguous, medium-sized punctures ( Fig.

7E); T3 with denser punctures and narrow apical hyaline rim.

Coloration. Body entirely metallic red, with some brassy reflections; ventrally metallic red to bronze, metasoma ventrally black. Femura and tarsi yellowish, tarsi on the outer surface can be darkened, with or without slightly metallic reflection;

scape metallic bronze, rest of antennae brownish, ventrally yellowish to light brown.

Tegulae non-metallic, brown to yellowish.

head and mesosoma, lateral view; C – head and mesosoma, dorsal view; D – mesosoma,

detail; E – metasoma, dorsal view; F – metasoma, lateral view. Scale bar = 0.5 mm.

Vestiture. Body with whitish and short setae (1 MOD), postero-laterally on metasoma with both appressed and erect longer setae (> 1.0 MOD). Legs short with erect setae.

Male. Similar to female, but with punctuation on mesonotum and mesoscutellum shallower and more scattered, 1–2 PD apart. Genital capsule as in Fig.

13G–H.

DISTRIBUTION. Russia (Tuva Rep.).

ETYMOLOGY. The specific epithet gabriellae (feminine noun in genitive case)

is dedicated to Gabriella Fossati (Bernareggio, Italy), mother of the first author, for her continuous support and help in the study of Chrysididae and her translation of

German articles and books.

Figures

Fig. 7. Hedychridium gabriellae Rosa, sp. n., holotype, ♀: A – head, frontal view; B –

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