Janssoniella albiclava Tselikh et Lee, 2020

Tselikh, E. V., 2020, Review of the eastern Palaearctic species of Janssoniella (Hymenoptera: Pteromalidae), with descriptions of four new species, Zoosystematica Rossica (China) 29 (2), pp. 301-315 : 302-304

Janssoniella albiclava Tselikh et Lee , sp.nov.

( Figs 1–9)

Janssoniella albiclava Tselikh and Lee in Tselikh et al.,

2017: 15 (unavailable name).

Holotype. Female , South Korea, “ Yeongyang-gun, Irwol-myeon, Mt. Irwol, 36°48′29″N, 129°05′25″E, 15.VII.–5.IX.2014, coll. Han ” ( YNU).

Paratypes. 1 female, Japan, “ Kyushu , 13.IX.1958, coll. K. Kamijo ”, “0000094537 Sys. Ent. Hokkaido Univ. Japan” ( EIHU) ; 1 male, “ Kyushu , 13.IX.1958, coll. K. Kamijo ”, “0000094539 Sys. Ent. Hokkaido Univ. Japan” ( EIHU) ; 1 female, “ Honshu, Nachisan , 20.IX.1965, coll. H. Takada ”, “0000094540 Sys. Ent. Hokkaido Univ. Japan” ( ZISP) .

Description. Female. Body length 5.40– 7.50 mm; fore wing length 3.90–5.60 mm.

Head dark metallic blue-green with diffuse coppery lustre. Antenna with scape and clava yellow, pedicel dark brown, flagellum black. Mesosoma dark metallic green with diffuse coppery and violaceous lustre. All coxae basally metallic green, apically yellowish-brown, femora, tibiae and tarsi yellow, last segment of tarsus yellowish-brown. Fore wing with brownish tint, venation yellowish-brown. Metasoma with Mt2 basally metallic green, apically yellowish-brown, Mt3 yellowish-brown, other tergites dark brown; ovipositor sheath black.

Sculpture of head dorsally weakly reticulate, clypeus smooth and shining, malar space alutaceous. Pronotum alutaceous; mesoscutum reticulate; axilla and scutellum finely reticulate; frenal area irregularly reticulate; lateral areas of propodeum alutaceous, but part near median carina smooth. Metasoma smooth and shining.

Head in dorsal view 2.20–2.30 times as broad as long and 1.20–1.33 times as broad as mesoscutum; in front view 1.36–1.40 times broader than high. POL 1.20–1.30 times OOL. Eye height 1.30 times eye length and 3.25–3.47 times as long as malar space. Distance between antennal toruli and lower margin of clypeus 0.67–0.82 times distance between antennal toruli and median ocellus. Antenna with scape 0.60–0.70 times as long as eye height and 0.75–0.90 times as long as eye length; pedicel 1.40–1.43 times as long as broad and 0.34–0.38 times as long as F1; combined length of pedicel and flagellum 1.70–1.85 times breadth of head; flagellum almost filiform; all anelli transverse; F1 3.25–3.60 times as long as broad, with four rows of dense sensilla; F2–F6 longer than broad.

Mesosoma 1.94–2.03 times as long as broad. Scutellum 1.13–1.20 times as long as broad. Propodeum medially 0.25–0.30 times as long as scutellum, median carina complete and straight, nucha absent.

Fore wing 2.90–3.30 times as long as maximum width; basal cell entirely pilose; speculum closed; costal cell with two complete rows of setae; marginal vein 0.70–0.78 times as long as postmarginal vein and 2.10–2.25 times as long as stigmal vein.

Metasoma lanceolate, 2.10–2.30 times as long as mesosoma and 1.60–1.80 times as long as mesosoma and head; Mt8 2.60–3.60 times longer than maximum width; ovipositor sheath 0.50–0.57 times length of Mt8.

Male. Body length 2.55 mm; fore wing length 2.30 mm. Antenna with scape yellowish-brown, pedicel and flagellum dark brown. Fore coxa metallic green with diffuse coppery lustre, mid and hind coxae brown with diffuse violaceous lustre. Metasoma with Mt2–Mt8 brown.

Sculpture of head dorsally, mesoscutum, scutellum and axilla reticulate. Lateral areas of propodeum finely reticulate.

Head in dorsal view 1.4 times as broad as mesoscutum. Eye height 1.25 times eye length and 4.00 times as long as malar space. Antenna with scape 0.55 times as long as eye height and 0.68 times as long as eye length; pedicel 1.16 times as long as broad and 0.41 times as long as F1; F1 1.08 times as long as broad. Propodeum medially 0.44 times as long as scutellum. Marginal vein of fore wing about 0.86 times as long as postmarginal vein and 2.38 times as long as stigmal vein. Metasoma about as long as mesosoma and 0.73 times as long as mesosoma and head.

Otherwise similar to female.

Comparative diagnosis. This species is similar to J. magna and J. rachini in having the fore wing with brownish tint and without fuscous cloud below stigma, propodeum medially 0.20–0.30 times as long as scutellum, metasoma with Mt8 2.60– 5.60 times longer than maximum width. However, J. albiclava has the antennal clava yellow (vs dark- er, dark brown or black), basal cell of fore wing entirely pilose (vs pilose apically), sculpture of frenal area irregularly reticulate, lateral areas of propodeum alutaceous, part near median carina smooth (vs finely reticulate), Mt2 basally metallic green, apically yellowish-brown, Mt3 yellowish-brown (vs dark metallic green).

Etymology. The name is derived from the Latin “albus”, meaning “light coloured”, and “clava”, meaning “club”, referring to the distinctive light coloured antennal clava.

Distribution. South Korea, Japan.

Biology. Unknown.