Closterocerus junubi, Jamali & Zeya, 2021

Jamali, Mohd Majid & Zeya, Shahid Bin, 2021, Review of Indian Closterocerus (Hymenoptera: Chalcidoidea: Eulophidae), with description of two new species, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 61 (1), pp. 231-241 : 239-240

Closterocerus junubi sp. nov.

( Figs 9–10 )

Type material. Hඈඅඈඍඒඉൾ: ♀ (on slide under four coverslips, slide No. EUL.56), INDIA: AඇൽΗඋൺ PඋൺൽൾඌΗ: Vishakhapatnam, Rajipeta, 3.ii.2014, Coll. M. T. Khan.( ZDAMU).Pൺ*©ൺඍඒඉൾඌ: ♀♀ 4 (on slide under four coverslips,slide Nos.EUL.62,EUL.66,EUL.67,EUL.77) with same data as for holotype. ( ZDAMU).

Description. Female. Holotype ( Fig. 9A ). Length, 0.75–0.96 mm (holotype, 0.95 mm). Head brown to dark brown except for metallic green vertex. Antenna brown to dark brown. Mesosoma with pronotum metallic blue; mesocutum and scutellum metallic green, medially with bluish reflection; metanotum metallic blue. Fore wing subhyaline with two dark bands, and one infumate patch as in figure 9B. Legs with coxae, femora and tibiae dark brown except for fore tibia that are pale white with brownish suffusion; tarsi of all legs pale white except for brown last tarsal segments. Gaster brown to dark brown except for metallic blue T1.

Head ( Fig. 10A ), in frontal view, 1.23–1.40× (holotype, 1.40×) as broad as high; eye height 3.00–3.75× (holotype, 3×) as long as malar space; antennal toruli situated markedly above lower eye margin.Antenna ( Fig. 10B ) with scape in basal third narrow, apical two-thirds broad and flattened, 2.18–2.50× (holotype, 2.25×) as long as broad, 2.58–3.10× (holotype, 3.10×) as long as pedicel; scape shorter than flagellum; pedicel 1.20–1.30× (holotype, 1.30×) as broad as long, longer than all flagellomeres individually; flagellum with one indistinct anellus; F1 0.46× as long as broad, shorter than F2; clava 1.53–2.00× (holotype, 1.74×) as long as broad; third claval segment conical.

Mesosoma ( Fig. 10C ) 1.27–1.48× (holotype, 1.44×) as long as broad; pronotum reticulate, clearly visible in dorsal view; mesoscutum slightly longer than scutellum, with polygonal reticulate sculpture and, with smaller cells, becoming faint posteriorly; notauli almost complete but furrows appear faint and wide posteriorly; middle lobe of mesoscutum with 2 setae; scutellum slightly longer than broad, almost smooth with 2 latero-medial setae; metanotum with dorsellum smooth, 3.16–3.80× (holotype, 3.16×) as broad as long; sides of metanotum with transverse striations; propodeum narrow, smooth and without any carina. Fore wing ( Fig. 9B ) 2.11–2.32× (holotype, 2.15×) as long as broad with closed speculum; setae on disc relatively shorter; marginal vein + parastigma 1.78–2.05× (holotype, 1.87×) as long as submarginal vein, 5.90–7.20× (holotype, 6.20×) as long as stigmal vein; postmarginal vein 0.80× stigmal vein; longest marginal seta 0.18–0.28× (holotype, 0.18×) maximum wing width. Hind wing ( Fig. 9C ) 6.20– 7.00× (holotype, 6.30×) as long as broad; longest marginal seta 0.63–0.93× (holotype, 0.75×) maximum wing width.

Metasoma ( Fig. 10D ). Petiole 2.42–3.14× (holotype, 2.42×) as broad as long; gaster longer than mesosoma; ovipositor occupying three-fourths of gaster length, slightly exserted beyond apex of gaster; ovipositor 1.53–1.65× (holotype, 1.55×) as long as hind tibia.

Relative measurements (holotype slide, at 100×). Head height: width, 27: 38; eye height, 19.50; malar space, 6.50. Antennal segments length: width – scape, 15.50: 7.00; pedicel, 5.00: 6.50; F1, 3.50: 7.50; F2, 4.75: 7.00; C1, 3.75: 6.75; C2, 3.75: 6.00; C3, 3.75: 3.00; spicula, 2.50. Mesosoma length: width, 42: 28. Fore wing length: width, 71: 3; longest marginal seta, 6; submarginal vein length, 16.50; parastigma length, 5; marginal vein length, 26; postmarginal vein length, 4; stigmal vein length, 5. Hind tibia length, 22.50. Metasoma. Petiole length: width, 2.00: 4.25; gaster length, 43; ovipositor length, 35.

Male. Unknown.

Differential diagnosis. Closterocerus junubi sp. nov. comes close to C. phytomyzae , but it differs from the latter in the following characters: antennal toruli situated markedly above lower eye margin; scape relatively short, longer than proximal 3 flagellomeres combined; fore wing with speculum closed. In C. phytomyzae : antennal toruli are situated at level of lower eye margin; scape long, subequal to flagellum; fore wing with speculum open (Mൺඇං 1971: fig. 12).

The new species differs from the Chinese species C. separatus Li & Li, 2021 , in the following characters: antenna with terminal spine or apical spicula distinctly shorter than flagellar segment; middle lobe of mesoscutum with one pair of setae; scutellum almost smooth, while in C. separatus antenna has terminal spine or apical spicula as long as flagellar segment; middle lobe of mesoscutum with three pairs of setae; scutellum with reticulate sculpture.

Etymology. Species name is an arbitrary combination of letters and it should be treated as a noun in apposition.

Host. Unknown.

Distribution. India: Andhra Pradesh.

Figures

Fig. 9. Closterocerus junubi sp. nov. female (holotype): A – habitus; B – fore wing; C – hind wing.

Fig. 10. Closterocerus junubi sp.nov.female (holotype):A – head,frontal view; B – antenna; C – mesosoma; D – metasoma.