Contribution to the knowledge of the Ichneumoninae (Hymenoptera, Ichneumonidae) from Maritime Southeast Asia Author Riedel, Matthias text Zootaxa 2023 2023-11-06 5363 1 1 94 https://www.mapress.com/zt/article/download/zootaxa.5363.1.1/52218 journal article 10.11646/zootaxa.5363.1.1 1175-5334 10146851 B8979382-355B-410A-B1C9-20AD910233E6 Stirexephanes albicoxis nov. sp. ( Figs 37A–D ) Holotype . ( ♀ ) Malaysia : SE Sabah , nr. Danum Valley Field C , c 150 m , WONO , Mal. trap 5, 19.iv.–22.v.1988 , RMNH´89, C. van Achterberg & T . Burghouts (Leiden). Etymology . The species name refers to the completely ivory coxae. Description . ♀ . Body length 11.0 mm. Head . Flagellum with 32 flagellomeres, slightly lanceolate; 1 st flagellomere 3.4 × longer than wide, 9 th flagellomere square, widest flagellomeres 1.3 × wider than long, apical flagellomere blunt. Temple very short, strongly and linearly narrowed behind eye. OED 1.1 × and OOD 0.9 × ocellar diameter. Frons shining, finely granulate and with superficial punctures dorsally. Face rather densely but superficially punctate, shining. Clypeus large, almost flat, with sparse punctures; apical margin blunt and slightly rounded (fig. 37A). Mandible long and rather slender, with two teeth; ventral tooth much smaller and slightly bent inwards. Malar space 0.8 × as long as width of mandibular base. Gena with sparse fine punctures. Genal carina reaching hypostomal carina away from mandibular base. Mesosoma . Notaulus distinctly impressed in frontal third of mesoscutum. Mesoscutum finely and densely punctate, dull. Mesopleuron with dense superficial punctures, with some coarse longitudinal rugae ventrally; speculum superficially punctate (fig. 37B). Metapleuron punctate and finely striate; juxtacoxal carina present. Scutellum slightly elevated and laterally carinate in basal 0.8, slightly longer than wide, with rather dense punctures. Propodeum completely carinated, with blunt short apophysis (fig. 37C); spiracle slit-shaped. Area basalis trapezoid, about as wide as long, without median tubercle. Area superomedia horseshoe-shaped, 1.3 × longer than wide; costula reaching at basal 0.35 of its length. Hind coxa with fine dense punctures, without scopa; hind femur densely punctate, 4.8 × longer than wide. Claws simple, strongly bent apically. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 1–2 × their diameter. Vein 1cu-a interstitial. Metasoma . Oxypygous. Petiole about as wide as high. Postpetiole slightly widened, without latero-median carina; median field not separated, finely granulate; lateral field punctate. Gastrocoelus small, much longer than wide, with fine ridges. Thyridium very small, oblique, 0.2 × as wide as the interval between thyridia (fig. 37D). 2 nd tergite 1.1 × longer than wide, entirely granulate and with fine dense punctures in basal half, dull. Following tergites finely granulate, slightly shining. 2 nd to 5 th sternites with median folds. Ovipositor sheath narrow, reaching widely behind metasomal apex by length of 7 th tergite. Colour . Black. Flagellum black, flagellomeres 1–4 reddish-brown, flagellomeres 5–15 ivory dorsally. Palps, all coxae and trochanters and 6 th and 7 th tergites mainly ivory. Spot of mandible, lateral margin of clypeus, scape ventrally and two small apical spots of scutellum reddish. Fore and mid femora and fore tibia and tarsus yellow; mid tibia yellow, apically blackish; mid and hind tarsi black; hind femur black, narrowly red at base; hind tibia blackish, diffusely reddish-brown in basal half. 2 nd and 3 rd tergites with narrow reddish apical margins. Wings slightly infuscate; pterostigma reddish-brown. FIGURE 37 . Stirexephanes albicoxis n. sp. HT ♀. A face, frontal view, B mesosoma, lateral view, C propodeum, dorsal view, D metasoma, dorsal view. ♁ unknown. Remarks . This new species differs from the known mainly black Oriental species of Stirexephanes by the completely ivory coxae and trochanters. Distribution . Only known from Borneo.