Pseudochrysis gengiskhan Rosa, 2017

Rosa, P., Proshchalykin, M. Yu., Lelej, A. S. & Loktionov, V. M., 2017, Contribution to the Siberian Chrysididae (Hymenoptera). Part 1., Far Eastern Entomologist 341 (341), pp. 1-44 : 9-11

Pseudochrysis gengiskhan Rosa , sp. n.

Figs 2D , 5A–F , 7F , 8A, D, G

SPECIMENS EXAMINED. Holotype – ♀, Mongolia: Övörkhangay, 137 km

NE Aravaykheer, 47°20’N 103°40.5’E, 1250 m, 26.VII 2004 (J. Halada) [ZIN].

Allotype – ♂, Mongolia, SE, 200 km SSE Baruun-Urt Moltsoy Els , 1250m, 27.VII

2007 (M. Kadlecová) [ZIN]. Paratypes: Mongolia, Övörkhangay, 137 km NE

Aravaykheer, 47°20’N 103°40,5’E, 1250m, 26.VII 2004, 3♀ (J. Halada) [ PRC] .

Russia: Tuva Rep., 20 km SSW Erzin, Tore-Khol’ Lake , 3.VII.2013, 1 ♀ (VL, MP) ;

13 km SW Samagaltai, Dyttyg-Khem River , 10.VII 2013, 1 ♀ (VL, MP); 25 km SE

Erzin , Tes-Khem River, 5.VII 2013, 1 ♀ (VL, MP) [IBSS] .

DIAGNOSIS. Pseudochrysis gengiskhan sp. n. is closely related to P.

incrassata (Spinola, 1838) , but females can be easily separated for: subantennal space elongate (2 MOD) ( Fig. 5A ) (vs. short subantennal space, 1.4 MOD in P.

incrassata ( Fig. 7A )); malar space long (1 MOD) (vs. short, 0.7 MOD); TFC raised and sharp, medially straight (vs. weakly raised and irregular); pronotum without two basolateral depressions contrasting in color ( Fig. 5B ) (vs. pronotum with two markedly blue basolateral depressions contrasting with the rest of pronotal color

( Fig. 7B )); punctuation on mesosoma deep with large punctures, 1 PD apart, and micropunctate interspaces ( Fig. 2D ) (vs. punctures more or less of the same size,

contiguous; larger on pronotal basolateral depressions; mesoscutum with punctures of two sizes, contiguous and without intervals); T2 with distinct double punctuation, with larger punctures widely separated (1–2 PD apart) and with small punctures in the interspaces: these small punctures become denser and contiguous on lateral and posterior margins ( Fig. 5D ) (vs. punctuation on metasoma even, with dense and contiguous punctures ( Fig. 7C )). Male has punctuation and coloration similar to female (darker on mesosoma in P. incrassata ) and can be separated also for: elongate subantennal space and shape of genital capsule ( Fig. 7F ). P.

gengiskhan sp. n. can be separated from P. fahringeri Trautmann, 1926 by the smaller dimensions (less than 10 mm) ( P. fahringeri usually exceeds 10 mm);

mesosoma with greenish-golden reflections, excluding the median lobe of mesoscutum ( Fig. 2D ) (vs. dark blue mesosoma ( Fig. 2E )); T3 apical margin after the pit row very short (vs. distinctly more extended ( Fig. 6E )); shape of male genital capsule ( Fig. 7F ) and female internal urites (Figs 8B, E, H).

DESCRIPTION. Body length 9–10 mm. Fore wing length 4.8–5.1 mm. Female.

OOL = 2.6 MOD; POL = 2.1 MOD; MS = 0.7 MOD; relative length of P: F1: F2:

F3 = 1.0: 1.8: 1.0: 0.8.

Head. Vertex with large, deep and contiguous punctures; vertex moderately depressed between midocellus and TFC, with punctures aligned and partially confluent into longitudinal grooves ( Fig 2D ); TFC raised and partially polished;

punctures below TFC large, elongate ( Fig. 5A ); scapal basin medially polished in the upper half, transversally microridged in the lower one: median area (1 MOD width) with thin wrinkles; laterally with even, dense, contiguous tiny punctures;

subantennal space 2.0 MOD.

head, dorso-lateral view; C – mesosoma, lateral view; D – metasoma, lateral view; E – metasoma, dorso-lateral view; F – metasoma, ventral view. Scale bar = 1.0 mm.

Mesosoma. Pronotal groove broad and deep, almost reaching 4/5 of pronotal length ( Fig. 5B ); pronotal punctuation with deep and irregularly distributed round punctures; interspaces densely micropunctate; mesoscutum with even, deep and interspaced punctures, up to 1 PD apart, with barely micropunctate interspaces; mesoscutellum with similar punctuation, but larger punctures; parapsidal furrow not clearly visible; metascutellum with deep and broad foveate punctures. Mesopleuron with large episternal sulcus, formed by elongate and foveate punctures partially fused.

Metasoma. Punctuation on T1 double, with tiny punctures on interspaces between larger punctures ( Fig. 2D ) (larger punctures 0.3–0.5 MOD, 0.5–1.0 PD apart); T2

with dorsomedian line partially impunctate; T2 with distinct double punctuation;

large punctures on T2 about half diameter than punctures on T1; punctuation denser,

with narrow interspaces; tiny punctures on interspaces denser and contiguous on lateral and posterior margins ( Fig. 5D ); T3 with small, even punctures (0.5–2 PD

apart), with slightly micropunctate interspaces; T3 with broad pre-pit swelling and pit row with elongate pits ( Fig. 5E ); T3 posterior margin arched ( Fig. 5E ).

Coloration. Head and mesosoma dorsally light green to greenish-golden, with median lobe of mesoscutum dark blue; metascutellum and propodeum bluish to greenish, with or without golden reflections; upper part of mesopleuron light green to greenish-golden; head and mesosoma ventrally light blue; T1 and T2 metallic red; T3 blue; metasoma ventrally blue; tegulae greenish-golden; tarsi dark brown.

Mandible brown, slightly lighter medially; scape, pedicel and F1 basally greenish,

flagellum black. Forewings clear, slightly brownish on radial cell.

Vestiture. Whitish, short setae on head and mesosoma (up to 1.0 MOD long);

face with short whitish setae (less than 1.0 MOD); appressed silvery setae laterally on scapal basin; metasoma with very short (less than 0.5 MOD) and barely visible setae.

Male. Similar to female, with acute propodeal teeth pointing downwards;

punctures on metasoma sparser; T3 apical margin gently arched; S2 without black spots.

DISTRIBUTION. Russia (Tuva Rep.); Mongolia.

ETYMOLOGY. The specific epithet gengiskhan (masculine noun in apposition)

is dedicated to Gengis Khan, founder of the Mongol Empire, the largest contiguous empire in history.

REMARKS. Russian specimens bear denser punctuation on metasoma, with smaller punctures on T1 and T2.

Distributional data for Pseudochrysis incrassata (Spinola, 1838) , a southern,

thermophilic species, provided by Anichtchenko (2002) are very likely referable to P.

gengiskhan sp. n. or P. fahringeri Trautmann, 1926 . The occurrence of P. incrassata in Siberia is in need of confirmation.

Figures

Fig. 2. Habitus, dorsal view. A – Euchroeus purpuratus (Fabricius); B – E. victorius sp.

Fig. 5. Pseudochrysis gengiskhan Rosa, sp. n., holotype ♀: A – head, frontal view; B –

Fig. 7. A–E – Pseudochrysis incrassata (Spinola), ♀: A – head, frontal view; B – head,

Fig. 6. Pseudochrysis fahringeri Trautmann, Khakassia Rep.: A – head, frontal view; B – head, dorso-lateral view; C – mesosoma, lateral view; D – metasoma, lateral view; E –