Coelichneumon sugillatops, Riedel, 2021

Riedel, Matthias, 2021, A New Contribution to the Knowledge of the East Palaearctic Ichneumoninae (Hymenoptera, Ichneumonidae), Linzer biologische Beiträge 53 (1), pp. 171-240 : 179-180

Coelichneumon sugillatops nov.sp. (figs 10, 12, 15, 40-42)

H o l o t y p e: (♀) " China, Beijing municip., Xiaolongmen Nat. Park, 39.58°N 115.26°E, 4- 10.VI.2016, leg. E. Jendek & O. Sauša" (Linz).

D e s c r i p t i o n: ♀. Body length 17.5 mm. Flagellum with 42 flagellomeres, strongly lanceolate; 1 st flagellomere 1.9× longer than wide, combined length of 1 st and 2 nd flagellomeres 0.50× eye length, 9 th flagellomere square; widest flagellomeres 2.0× wider than long. Temple slightly widened behind eyes and moderately narrowed posteriorly. OED 1.3× and OOD 1.1× ocellar diameter. Frons and face rugose-punctate. Clypeus densely punctate, smooth and shining between punctures; apical margin slightly bulging medially. Gena wide, laterally 1.3× wider than eye, with dense punctures ventrally. MI 0.6.

Mesosoma with brownish hairs. Notaulus distinctly impressed in anterior 0.25 of mesoscutum. Mesoscutum densely punctate, finely granulate, shining. Mesopleuron densely punctate, dorsally and posteriorly rugose-punctate. Metapleuron densely rugose-punctate. Juxtacoxal carina present. Scutellum slightly elevated, about as long as wide, with rather dense punctures, without lateral carina. Area superomedia heart-shaped, slightly wider than long, with weak surrounding carinae, finely rugose and shining; anterior transverse carina posterior to its middle. Hind coxa densely punctate, with strong scopa (0.25× coxal lenth). Hind femur stout, 3.3× longer than wide, with dense punctures. Tarsi ± widened; 2 nd mid tarsomere 1.5 × and 3 rd mid tarsomere 1.2× longer than wide. Areolet pentagonal, frontal distance betweenn veins 2rs-m and 3rs-m 1× their width; vein 2m-cu distad its middle. Vein 1cu-a postfurcal by 2× its width.

Postpetiolus strongly widened; lateral field 0.7× as wide as median field, punctate; median field moderately elevated, with c. 8 strong longitudinal striae. Gastrocoelus strongly impressed, with strong oblique ridges. Thyridium slightly oblique, 1.0× as wide as the interval. 2 nd tergite 0.9× as long as wide. 2 nd and 3 rd tergites densely rugose-punctate and striate medially. 4 th tergite rather strongly punctate; following tergites with superficial punctures and shining. 7 th tergite 0.75× as long as wide. Seen dorsally, ovipositor sheath extending behind metasomal apex by 0.7× length of 7 th tergite.

Color: black. Stripes of flagellomeres 8-14, narrow frontal orbit, spot on vertex, spot on collar and hind edge of pronotum, spots on tegula and subtegular ridge, apical 2/3 of scutellum and posterolateral spots on 1 st to 3 rd tergites ivory. Legs black; fore and mid femora apically and fore and mid tibiae frontally ± ochreous. Wings almost hyaline; pterostigma reddish.

♁ unknown.

R e m a r k: This new species is closely related to Coelichneumon sugillatorius (LINNAEUS) and C. septenus TOWNES et al.. I give a short key for separation of the ♀♀:

1. Gena with very scattered punctures ventrally (fig. 9). Temple slightly widened behind eye. Hind femur stout, 3.3× longer than wide. Tarsi slender; 2 nd mid tarsomere 2.1× longer than wide............................................................ C. septenus ( TOWNES et al., 1965)

- Gena densely punctate ventrally (figs 10-11)......................................................................2

2. Tarsi ± widened, 2 nd mid tarsomere 1.5× longer than wide (fig. 12). Temple slightly widened behind eye. Hind femur stouter, 3.3× longer than wide .......................................... ........................................................................................................... C. sugillatops nov.sp.

- Tarsi slender, 2 nd mid tarsomere 2.0× longer than wide (fig. 13). Temple distinctly narrowed behind eye. Hind femur slenderer, 3.6-4.0× longer than wide.............................2 ....................................................................................... C. sugillatorius (LINNAEUS, 1758)