Philoctetes lyubae 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 : 39-41

Philoctetes lyubae Rosa , sp. n.

Figs 18A–F

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

Erzin, Tore-Khol’ Lake, 3.VII 2013 (VL, MP) [ZIN].

DIAGNOSIS. Philoctetes lyubae sp. n. can be separated from other Philoctetes by the following combination of characters: scapal basin smooth; metascutellum with elongate, subtriangular, apically subtruncate lamella; the latter in lateral view longer than mesoscutellum; body bicolored, with head and mesosoma metallic green, metasoma golden to golden-greenish; tegulae non-metallic black; mediumlarge dimensions (5.0 mm). Ph. lyubae sp. n. is closely related to Ph. putoni (du

Buysson, 1892), considered endemic for the Alps so far (Rosa et al. 2017b); it can be separated for scapal basin entirely smooth ( Fig. 18A ) (vs. transversely and irregularly rugulose in Ph. putoni ), head and mesosoma with short (> 1 MOD) and whitish setae (vs. head mesosoma with long (1.0–1.8 MOD) black and erect setae);

T1 posterior margin uniformly punctate with tiny dots (vs. T1 posterior margin with scattered tiny dots); in lateral view, T3 straight before apical margin ( Fig. 18E ) (vs.

T3 transversely depressed before apical margin); body bicolored (vs. uniformly metallic green to dark blue). Ph. lyubae is also similar to Ph. mongolicus (du

Buysson) (Figs 19A–F) and Ph. cynthiae sp. n. for metascutellum with elongate,

subtriangular lamella, yet it can be separated by the scapal basin entirely smooth

(vs. irregularly rugulose in the other two species), larger size (> 5.0 mm) (vs. 3–4

mm); apex of T3 with broadly open median notch (vs. deep and more or less narrow); body bicolored (vs. entirely metallic red with blackish shiny areas in Ph.

mongolicus and bronze to coppery in Ph. cynthiae sp. n.); tegulae non-metallic (vs.

metallic in Ph. mongolicus , Figs 19B, C).

DESCRIPTION. Female. Body length 5.1 mm. Fore wing length 3.7 mm. OOL =

2.0 MOD; POL = 2.7 MOD; MS = 1 MOD; relative length of P: F1: F2: F3 = 1:

1.3: 0.8: 0.7.

Head. Frons, vertex, and face between eye and scapal basin with small to large (up to 0.7 MOD) and shallow punctures ( Fig. 18A ), widely separate (1–2 PD). Punctures on post-ocellar vertex smaller, with large impunctate areas up to 3 PD apart. Scapal basin asetose, deep, smooth ( Fig. 18A ). Gena with large punctures (0.5 MOD), with wrinkles along margin. Genal carina relatively sharp, not bisecting MS. Ocellar triangle isosceles, with large POL (2.7 MOD). Postocellar line obsolete.

Mesosoma. Pronotum with multiple rows of deep pits along anterior and posterior margins, medially with shallow, scattered punctures surrounded by broad polished, or at most micropunctate, intervals ( Fig. 18C ); laterally with large, deep,

contiguous punctures ( Fig. 18B ). Mesoscutum with small, shallow punctures clumped along notauli; punctures basally between notauli large, about 1 MOD ( Fig.

18C). Notauli and parapsidal furrows complete; notaular pit deep, narrow, short

(about 1 MOD). Mesoscutellum with foveate punctuation; punctures as large as those at the base of mesoscutum. Metascutellum with large foveate-reticulate punctures (1 MOD), contiguous or with narrow interspaces; metascutellum with elongate subtriangular lamella, apically subtruncate; in lateral view, lamella longer

 

Fig. 19. A–F – Philoctetes mongolicus (du Buysson) , ♂, Tuva: A – head, frontal view; B – mesosoma, lateral view; C – mesosoma, dorsal view; D – metasoma, dorsal view; E – metaoma, lateral view; F – genital capsule; G – Ph. cyntiae Rosa , sp. n., genital capsule. Scale bar = 0.5 mm.

than mesoscutellum ( Fig. 18B ). Mesopleuron with large foveate punctures ( Fig.

18B). Tarsal claw four-toothed.

Metasoma. T1 impunctate, smooth, with even, fine punctures on lateral and posterior margins; T2 dorsally evenly, finely punctate ( Fig. 18D ); T2 with postero-

medial impunctate longitudinal line; posterior margin impunctate. T3 lateral margins almost straight, gently curved before the median notch; punctuation distinctly double, rugulose, with confluent punctures along margins ( Fig. 18F ); apex with narrow brownish rim. median notch deep, yet widely open (> 90°), with lateral angles acute, edges thickened by brownish rim ( Fig. 18F ).

Coloration. Head and mesosoma metallic green, metasoma golden with greenish to golden-red reflections at apex ( Fig. 18F ); mesopleuron, metanotum and sterna with weak golden reflection. Scape and pedicel metallic green, flagellum blackish.

Legs metallic green, tarsi dark brown. Tegulae brown to black. Wings distinctly brownish, with regular and fine mother-of-pearls wrinkles on outer half.

Male. Unknown.

Vestiture. Long (around 1 MOD), whitish, sparse and erected setae on head,

mesosoma, femur, T2 postero-laterally, and T3.

DISTRIBUTION. Russia (Tuva Rep.).

ETYMOLOGY. The specific epithet lyubae (feminine noun in genitive case) is dedicated to Lyuba Zaytseva (Smolensk, Russia), wife of the first author, for her contribution to the study of Russian Chrysididae and her uninterrupted support.

Figures

Fig. 18. Philoctetes lyubae Rosa, sp. n., holotype ♀: A – head, frontal view; B –