Aoplus rufomesonotator, Riedel, 2023

Riedel, Matthias, 2023, Notes on Ichneumoninae (Hymenoptera, Ichneumonidae) from southern China, with descriptions of one new genus and twelve new species, Contributions to Entomology 73 (2), pp. 223-248 : 223

Aoplus rufomesonotator sp. nov.

Figs 4 , 8-11

Type material.

Holotype. (♀) China, Sichuan: Enei Shan, Jieyindian, 29.537°N, 103.331°E, 2400-2500 m elev., 06.VII.2009, leg. Blank, Liston, Taeger.

Etymology.

The species name refers to the rufous mesoscutum ( “mesonotum” of older authors).

Description.

Female. Body length 11 mm. Flagellum with 32 segments, slightly lanceolate; 1st flagellar segment 3.3 × as long as wide; about 12th segment square; widest segments 1.2 × as wide as long. Temple short, strongly and almost linearly narrowed behind eye. OED 1.0 × ocellar diameter. Frons granulated, with superficial punctures. Face granulated and densely punctate, dull. Clypeus slightly convex, with coarse punctures, ± shining; apical margin almost straight. Mandible narrow; lower mandibular tooth much smaller than upper tooth, moderately bent inwards (by ca. 45°). Malar space 1.0 × as long as basal mandibular width. Gena laterally 0.6 × as wide as eye. Genal carina reaching hypostomal carina far from mandibular base, both carinae low.

Mesosoma covered with grey hairs. Mesoscutum densely and finely punctate and granulate, dull. Notaulus impressed in anterior 0.4 of mesoscutum. Mesopleuron and metapleuron densely rugose-punctate, speculum densely punctate; juxtacoxal carina distinct. Scutellum moderately convex, slightly wider than long, with sparse punctures and lateral carina on anterior 0.2. Area basalis confluent with area superomedia, slightly bulging forward medially. Area superomedia hexagonal, slightly longer than wide. Costula indistinct. Area petiolaris coarsely rugose, with lateral carina on posterior half. Posterolateral edge of area dentipara without apophysis. Hind coxa densely, but superficially punctate, with distinct scopa in apical 1/4. Legs slender. Hind femur densely punctate, 4.2 × as long as wide. Tarsal claws simple, strongly bent apically (by almost 90°). Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 3 × diameter of these veins; vein 2m-cu reaching its middle. Vein 1cu-a slightly postfurcal (by 1 × its width).

Metasoma strongly oxypygous. Postpetiole moderately widened, without latero-median carina; median field slightly elevated, finely rugulose. Gastrocoelus slightly impressed. Thyridium large, moderately oblique, 1.8 × as wide as interval between thyridia. 2nd to 4th sternites with median folds. 2nd tergite 1.2 × as long as wide, 2nd and 3rd tergites densely and finely rugulose-punctate, dull; following tergites with superficial punctures, ± shining. Ovipositor sheath widely extending beyond metasomal apex (by 0.8 × length of 2nd hind tarsomere).

Colour. Black with extensive red markings. Stripes on flagellar segments 8-12, collar and upper margin of pronotum, subtegular ridge and scutellum ivory. Head reddish; stripe on inner orbit yellow (widened at frontal orbit). Stemmaticum and occiput black. Mesosoma black; pronotum and mesoscutum reddish. Metasoma reddish; petiolus anteriorly, anterior halves of 2nd and 3rd tergites and narrow anterior bands of following tergites infuscate. Fore- and mid-coxae reddish, with yellow spots externally. Hind coxa black, red dorsally and apically. Fore- and mid-femora black, reddish frontally. Hind femur black, narrowly red basally. Tibiae black, fore- and mid-tibia reddish frontally and basally, hind tibia red basally. Tarsi red. Wings not distinctly infuscate, pterostigma ochreous.

Male. Unknown.

Remark.

This new species resembles Aoplus rantaizanus (Uchida, 1927) from Taiwan, but this species differs from A. rufomesonotator by its reddish-brown head with yellowish-red clypeus and face, the reddish mesosoma with yellowish pronotum and mesopleuron and entirely reddish legs.

Distribution.

Sichuan (China).

Figures

Figures 4 - 5. Habitus, lateral view: 4. Aoplus rufomesonotator HT; 5. Exephanes rufocapitis HT.

Figures 8 - 11. Aoplus rufomesonotator sp. nov. HT: 8. Face, frontal view; 9. Head, dorsal view; 10. Propodeum, dorsal view; 11. Basal tergites, dorsal view.