Xorides hulstaerti (Benoit, 1952)

Varga, Oleksandr, 2019, Revision of theAfrotropical Xorides Latréille, 1809 (Hymenoptera, Ichneumonidae Xoridinae), with description of three new species, Zootaxa 4638 (1), pp. 57-80 : 62-65

Xorides hulstaerti (Benoit, 1952)

( Fig. 3 )

Material examined. Holotype. DEMOCRATIC REPUBLIC OF CONGO: male, Musée du Congo, Tshuapa: Flandria, x–xi. 1940, leg. Rév. P. Hulstaert (deposited in: RMCA).

Diagnosis. Xorides hulstaerti is characterized by the combination of the following characters: head and mesosoma generally black, metasoma reddish; vertex sparsely punctate near occipital carina and impunctate near ocelli; face reticulate rugose; antenna subapically not sharply angled at a single joint, flagellomeres covered with long erect setae (as long as transverse diameter of flagellomere); pronotum densely punctate; epomia absent; epicnemial carina absent; propodeum with only traces of dorsal longitudinal carinae, tooth-like projections absent; fore and middle trochantelli without apical tooth; fore wing with vein cu-a basad of Rs&M by about 0.6 of its length; first metasomal tergite 1.8× as long as apical width, densely punctate, with distinct transverse grooves, carinae absent; parameres rounded.

Re-description. Male. Holotype ( Fig. 3 ). Body length 13.0 mm. Fore wing 9.0 mm.

Head ( Figs 3B, 3C, 3G ) depressed, temples short and parallel behind eyes, covered with sparse long white setae; frons transversely wrinkled, with short (about 0.5× distance from face to dorsal ocellus) carina-like projection between antennal sockets (apical part widened); length of the ocellar-ocular distance 1.1× maximum diameter of lateral ocellus; ocelli small, hind ocellus not extended behind eye; vertex sparsely punctate near occipital carina and impunctate near ocelli; temples wrinkled; occipital carina complete; antenna with 28 flagellomeres, covered with long erect setae (as long as transverse diameter of flagellomere); face about 0.6× as long as wide, reticulate rugose; tentorial pits deep, malar space 0.7× basal width of mandible, with strongly depressed subocular groove; clypeus about 0.6× as long as wide, indistinctly sculptured proximally and rugulose distally, rounded apically.

Mesosoma ( Figs 3D, 3E, 3F ) densely pubescent; propleuron densely punctate dorsally, indistinctly sculptured ventrally; pronotum strongly swollen apically, densely punctate, epomia absent; mesoscutum elongate, densely punctate (more sparsely punctate proximally), with weak notauli and transverse carina instead of prescutellar groove; scutellum and postscutellum sparsely punctate; mesopleuron densely punctate anteroventrally, smooth posteriorly; epicnemial carina absent; sternaulus indistinct; metapleuron densely punctate; propodeum rugulo-punctate, with only traces of dorsal longitudinal carinae, tooth-like projections absent; pleural and submetapleural carinae present; spiracles elongate.

Legs relatively stout, hind femur 2.6× as long as wide; hind coxae densely punctate; fore and middle trochantelli without apical tooth; tarsal claws simple.

Wings. Fore wing with vein 2 rs-m short, about 0.7× distance between 2 rs-m and 2 m-cu; vein cu-a basad of Rs&M by about 0.6 of its length; hind wing with distance between distal abscissa of Cu 1 and M weakly longer, than vein cu-a.

Metasoma ( Fig. 3E ) densely pubescent; first tergite 1.8× as long as apical width, densely punctate, with distinct transverse grooves, carinae absent; second tergite as long as apical width, the same sculpture as first tergite, with two basolateral and third central triangular swellings delimited by basolateral and subapical transverse grooves; the remaining tergites the same structure and sculpture, with apicolateral teeth; parameres rounded.

Colour. Head and mesosoma generally black except eye orbits, temples centrally, pronotum, stripes along notauli, subtegular ridge, posterior edge of mesopleuron, marks on propodeum yellow; metasoma reddish (orange); fore and middle legs yellowish-red, hind coxae black, trochanters, trochantelli, tibiae and tarsi brownish, femora red; pterostigma brown, yellow basally.

Female. Unknown.

Distribution. Democtratic Republic of Congo.

Material examined. Holotype. DEMOCRATIC REPUBLIC OF CONGO: female, Musée du Congo, Kasaї, Kondué, without date, leg. E. Luja (deposited in: RMCA).

Diagnosis. Xorides konduensis is characterized by the combination of the following characters: body generally black; vertex densely punctate; face rugulo-punctate; pronotum densely, but weakly rugulo-punctate; epomia present; epicnemial carina present; propodeum with longitudinal and transverse carinae present, tooth-like projections weak; fore and middle trochantelli without apical tooth; fore wing with vein cu-a distad of Rs&M by about 0.2 of its length; first metasomal tergite 1.8× as long as apical width, rugulose, with transverse grooves, dorsal and lateral longitudinal carinae present, reaching the apex of tergite; ovipositor about 1.5× length of hind tibia.

Re-description. Female. Holotype (Fig. 4). Body length 9.0 mm. Fore wing 7.0 mm.

Head (Figs 4B, 4C, 4D) depressed, temples long and weakly narrowed behind eyes, covered with dense short white setae; frons transversely wrinkled, with very short carina-like projection between antennal sockets; length of the ocellar-ocular distance 2.3× maximum diameter of lateral ocellus; ocelli small, hind ocellus on the same line with eye; vertex densely punctate; temples wrinkled; occipital carina complete; antenna with at least 11 flagellomeres (apex broken); face about 0.5× as long as wide, rugulo-punctate, strongly swollen; tentorial pits deep, malar space 0.8× basal width of mandible, with strongly depressed subocular groove; clypeus about 0.7× as long as wide, indistinctly sculptured proximally and transversely wrinkled distally, rounded apically.

Mesosoma (Figs 4C, 4D, 4E, 4F) almost glabrous; propleuron sparsely punctate; pronotum swollen apically, densely, but weakly rugulo-punctate, epomia present; mesoscutum elongate, densely punctate proximally, rugulose distally, with strong notauli; scutellum and postscutellum densely punctate; mesopleuron densely punctate; epicnemial carina present, reaching the edge of pronotum near the middle of mesopleuron; sternaulus present on posterior 0.3 of mesopleuron; metapleuron rugulose; propodeum indistinctly sculptured, from densely punctate to rugulose, with longitudinal and transverse carinae present, tooth-like projections weak; pleural and submetapleural carinae present; spiracles elongate, small.

Legs slender, hind femur about 3.1× as long as wide; hind coxae smooth and almost impunctate, fore and middle tibiae? weakly swollen, wider than femora (specimen in a bad condition); with V-shaped median ventral groove; fore and middle trochantelli without apical tooth; tarsal claws simple.

Wings. Fore wing with vein 2 rs-m short, about 0.6× distance between 2 rs-m and 2 m-cu; vein cu-a distad of Rs&M by about 0.2 of its length; hind wing with distance between distal abscissa of Cu 1 and M slightly longer than vein cu-a.

Metasoma (Figs 4E, 4G) pubescent; first tergite 1.8× as long as apical width, rugulose, with transverse grooves present, dorsal and lateral longitudinal carinae present, reaching the apex of tergite; second tergite 0.8× as long as apical width, rugulose, with swellings indistinct; third tergite about 0.6× as long as apical width, rugulose; the remaining tergites granulate; ovipositor about 1.5× length of hind tibia, with the apical teeth; ovipositor sheaths densely pubescent.

Colour. Body generally brownish-black except marks on face, antenna with at least flagellomeres 10–11, lateroapical spots on tergites 2–6 yellow; legs, temples partly and clypeus apically reddish; pterostigma brown, yellow basally; ovipositor sheaths brown.

Male. Unknown.

Distribution. Democtratic Republic of Congo.

Figures

FIGURE 3. Xorides hulstaerti (Benoit, 1952), holotype male (scale bar is 0.5 mm): A) lateral view of habitus; B) frontal view of head; C) lateral view of head; D) lateral view of mesosoma; E) dorsal view of propodeum and metasomal tergites 1–2; F) fore wing; G) lateral view of flagellomeres; H) type label.