Hedychridium fadeevi Rosa, 2018

Rosa, P., 2018, New species of chrysididae (Hymenoptera) from Central Asia, Russia and Iran. Part 1, Far Eastern Entomologist 371, pp. 1-27 : 12-14

Hedychridium fadeevi Rosa , sp. n.

Figs 21–24

SPECIMENS EXAMINED. Holotype – ♀, Kazakhstan: Almatinskaja oblast ,

env. Akzahr, 397 m, 44°52’49’’N 75°53’11’’E, 26. V 2015, leg. K.I. Fadeev [ ZIN] .

Paratype: 1♀, same data of holotype [ PRC] .

DIAGNOSIS. Hedychridium fadeevi sp. n. is herewith included into the H.

ardens species group, despite of some peculiar features, namely the unusually elongate, slender mandibles and tarsi, particularly the last tarsomere. Its bicolored body coloration, with head and mesosoma green and metasoma red, is found in only few known Central Asian Hedychridium species, belonging to H. flos, H. roseum,

and H. ardens species groups. H. fadeevi cannot be included in the H. flos group,

because of the unmodified face and fore femur (face with sharp, M-shaped transverse frontal carina; fore femur ventrally carinate and angulate in H. flos group); nor it can be included in the H. roseum group, because of the elongate tarsomeres (hind tarsomeres robust, stocky, the second shorter than the third in H. roseum group).

Within the H. ardens group, only H. alpestre Semenov, 1954, H. trossulus Semenov,

1954 and H. sibiricum Rosa, 2017 share a similar coloration; however H. alpestre and H. trossulus can be easily separate for scapal basin transversely striate (finely punctate in H. fadeevi sp. n.), and mesosoma punctures scattered (closer to confluent in H. fadeevi sp. n.). Finally, H. fadeevi sp. n. is separated from H. sibiricum for the elongate and falciform mandibulae, F1 short (l/w = 2), mid and hindfemura nonmetallic, testaceous (unmodified and bidentate mandibulae, F1 long (l/w = 3), femura metallic in H. sibiricum).

DESCRIPTION. Body length 6.4 mm. Fore wing length 4.0 mm. Female. OOL

= 2.1 MOD; POL = 2.0 MOD; MS = 0.5 MOD; relative length of P:F1:F2:F3 =

1.0:1.0:0.9:0.8.

Head. Frons and vertex with dense and small punctures, nearly contiguous on vertex, with tiny punctures on interstices; polished on two areas laterally to posterior ocelli; face flat, all over with dense tiny punctures, medially scattered. Subantennal

22 – habitus, lateral view; 23 – head, frontal view; 24 – metasoma, dorso-lateral view. Scale bar = 1.0 mm.

space less than 1.0 MOD. Clypeal apical margin bordered by large thickened rim

(0.8 MOD). Mandibles distinctly elongate and sickle-like, without inner tooth. Ocellar triangle isosceles; midocellus anteriorly, and posterior ocelli laterally sunken.

Mesosoma. Mesosoma with dense, fine to moderate punctures, contiguous to confluent on mesoscutum. Scutellum with double punctures, with shallow tiny and small, scattered punctures (1 PD), with polished interstices. Notauli and parapsidal lines narrow and complete. Metascutellum with dense, deep, foveate, irregular punctures, larger than those on mesoscutellum. Propodeal teeth short, triangular, and pointing outwards; propodeum transversely striate before propodeal teeth; median propodeal area covered by dense, tiny punctures. Mid-, hindtibia and femora distal joints ferruginous; midtibia with a small, round dark pit at base of inner side; hindtibia with enlarged dark pit, as long as one third of entire length. Last tarsomeres distinctly elongate (l/w = 6); tarsal claws elongate (as long as 3/5 of last tarsomere); tibia and tarsomere bear long and spiniform bristles.

Metasoma. First and second tergum with even and minute punctures, dorsally equally spaced, laterally almost contiguous, as well as on the whole third tergum.

Apical margin of third tergum with hyaline rim (0.5 MOD). Second and third sternum with scattered double punctures (1–4 PD apart).

Coloration. Head and mesosoma wholly metallic green; metasoma dorsally pinkish-red, ventrally black with a green to purplish large spot on second sternum.

Mandibles brown, basally metallic green, in the middle testaceous, apically dark brown. Scape and pedicel green to coppery, flagellum brown, with F1 light brown.

Wings almost hyaline. Foretibia slightly metallic green, mid-, hindtibia and tarsi ferruginous.

Vestiture. Face laterally and basally with silvery appressed setae; head and mesosoma dorsally with whitish, short (1.0 MOD long), and erect setae; metasoma laterally and on third tergum with longer, appressed setae, and sparse, erect shorter setae; coxae, trochanters and femora with long and erect bristles.

Male. Unknown.

DISTRIBUTION. Kazakhstan.

ETYMOLOGY. The specific epithet fadeevi (masculine name in genitive case)

is named after K.I. Fadeev ( Russia), who collected the type specimens .

Figures

Figs 21–24. Hedychridium fadeevi Rosa, sp. n., holotype ♀: 21 – habitus, dorsal view;