Chrysis sooni Rosa, 2017

Rosa, P., Lelej, A. S., Proshchalykin, M. Yu., Loktionov, V. M. & Mokrousov, M. V., 2017, New records of Chrysididae (Hymenoptera) from Russia with description of five new species, Far Eastern Entomologist 345, pp. 1-33 : 26-29

Chrysis sooni Rosa , sp. n.

Figs 10A–H , 11A–F

SPECIMENS EXAMINED. Holotype – ♀, Russia: Far East : Primorsky Terr.,

Novokachalinsk, 21.VIII 2009 (AL, MP, VL) [ZIN]. Paratype: Primorsky Terr .,

Yakovlevsky distr. , Pritsepilovka, 10.VII 2004, 1 ♀ (A. Gerasimenko) [ PRC] .

DIAGNOSIS. Chrysis sooni sp. n. is an outstanding species of the ignita speciesgroup. It is morphologically distinct from all the other known species. In particular,

the shape of black spots medially fused on S2 is unique ( Fig. 11F ), as well as the shape of T3 with pits of the pit row deep, wide, partially fused and shining; typical are also apical teeth prolonged, with median pair round at apex ( Fig. 11E ). We assign this species to the C. indigotea subgroup (sensu Linsenmaier, 1959; Soon & Saarma,

2011) for: short and thick ovipositor, with ovoid membranaceous terga ( Fig. 10B–

I), similar to C. obtusidens Dufour & Perris, 1840 ; shape of internal sternites and tergites, with short chitin fork, and the broaden tri-lobed shape of T6. The closer species is C. obtusidens for: general habitus ( Fig. 10A ); black colour, lusterless, of mesoscutum median lobe; metasoma punctuation and spurs of midtibia, with outer spur double as long as inner spur. Nevertheless, C. sooni can be easily separated through shape of T3 (in C. obtusidens pits of the pit row are small, well separated;

apical teeth of T3 are short and obtuse); metasoma ventrally metallic blue with black spots medially fused (in C. obtusidens metasoma ventrally metallic red with black spots separated).

DESCRIPTION. Female. Body length 8.3–10.0 mm. Fore wing length 5.0–6.0

mm. OOL = 1.8 MOD; POL = 1.9 MOD; MS = 1.0 MOD; relative length of P: F1:

F2: F3 = 1.0: 1.6: 1.0: 0.9.

Head. Vertex and frons with relatively small (0.2–0.4 MOD) and contiguous punctures; with two impunctate and polished areas laterally to posterior ocelli; area between frons and midocellus with a small and shallow depression; TFC well developed, raised and medially straight, with curved endings continue along eye margin;

scapal basin fully sculptured, with fine wrinkles interspersed with minute punctures from medial line to eye margin ( Fig. 11A ); subantennal space less than 1.0 MOD.

Mandible simple, without subapical tooth; in lateral view thick (1.0 MOD).

Mesosoma. Pronotal groove deep, broad, reaching 2/3 of pronotum length; pronotum with punctures of different size, on average larger than those on vertex, with minute punctures on narrow interspaces; punctuation on mesoscutum scattered, with larger punctures on median lobe and with minute punctures on interspaces; mesoscutellum medially with scattered large punctures, partially impunctate ( Fig. 10A ),

laterally with small punctures on interspaces; metascutellum with large, round, deep foveate punctures; propodeal teeth large, outer edge straight and subparallel ( Fig.

10A); mesopleuron in the upper half with broaden episternal sulcus, decreasing towards scrobal sulcus.

Metasoma. Punctures on T1 small, as large as punctures on vertex, scattered (1–

4 PD apart), with interspaces densely micropunctate ( Fig. 11C ); punctures on T2

smaller, about half size as large as punctures on T1 ( Fig. 11C ), closer (1 PD apart)

and sub-equal in size, becoming smaller towards posterior margin, denser on lateral margins, with minute punctures on interspaces; T2 longitudinal carina faint; T3

with small and dense punctures; weak transverse pre-pit swelling ( Fig. 11D ); pits of the pit row round, noticeably large and deep, somewhere confluent, shining,

contrasting with sternite color and sculpture ( Fig. 11E ); apical margin of T3 with four teeth: lateral teeth triangular and pointed; median teeth round at apex; interval between median teeth smaller than interval between inner and lateral tooth ( Fig.

11E). Black spots on S2 round, medially fused, covering less than half of sternite length ( Fig. 11F ); S3 fully black.

view. C – Metasoma, dorsal view. D – Metasoma, lateral view. E – Metasoma, dorso-lateral view. F – Metasoma, ventral view. Scale bar = 1.0 mm.

Coloration. Face and part of frons metallic green, lusterless on ocelli area, vertex and rest of head blue. Pronotum dark blue except green anterior margin; medial lobe of mesoscutum lusterless blackish, laterally dark blue; mesoscutellum antero-

basally and postero-basally lusterless black, laterally green; metascutellum green;

propodeum blue to light blue on propodeal teeth. Metasoma slightly green at base of T1, the rest of metasoma metallic red to purplish; pits of pit row on T3 bright;

metasoma ventrally blue, S3 black.

Vestiture. Body with whitish, short, erect setae (1.0–1.5 MOD).

Male. Unknown.

DISTRIBUTION. Russia (Primorsky Territory).

ETYMOLOGY. The specific epithet sooni (masculine name in genitive case) is named after Villu Soon (Tartu, Estonia), renowned expert of Chrysididae .

Figures

Fig. 10. Chrysis sooni sp. n., holotype, ♀: A – habitus; B–H – internal sterna and terga. Scale bar for A = 1.0 mm, for B–H = 0.5 mm.

Fig. 11. Chrysis sooni sp. n., holotype, ♀. A – Head, frontal view. B – Mesosoma, lateral