Diaparsis (Diaparsis) aneucliformis, Khalaim, 2013

Khalaim, Andrey I., 2013, Afrotropical species of Diaparsis Förster, 1869 (Hymenoptera: Ichneumonidae: Tersilochinae), African Invertebrates 54 (1), pp. 127-127 : 133-135

Diaparsis (Diaparsis) aneucliformis sp. n.

Figs 7–12

Etymology: Named after its similarity to the genus Aneuclis Förster.

Diagnosis: Diaparsis aneucliformis resembles species of Aneuclis by having the fore wing with the posterior abscissa of nervulus short and pale as well as a short, filiform, 16­segmented flagellum. Differs from known Afrotropical species of Aneuclis because of the longer malar space, and from its Afrotropical congeners in having a long malar space, short flagellum, unusually long mouthparts, pterostigma white­marked proximally and distally, short metacarp and mesopleuron conspicuously inflated dorsally and ventroposteriorly.

Description:

Female.

Body length 4.7 mm.

Head rounded behind eyes in dorsal view; temple 0.7× as long as eye width. Flagellum of antenna filiform, unusually short, about 0.55× as long as fore wing, with 16 segments; all flagellomeres, except the basal and the apical ones, about 1.3× as long as broad. Mandible slender, with upper tooth distinctly longer than lower tooth. Malar space 1.2× as long as basal width of mandible. Clypeus 2.4× as broad as long, almost flat in lower 0.7, mostly smooth, finely punctate in upper 0.6 and very finely granulate near upper margin. Face, frons and vertex finely granulate, dull, finely punctate. Temple finely and sparsely punctate, mostly smooth between punctures, very finely granulate dorsally and ventrally. Occipital carina complete.

Mesosoma with mesoscutum finely granulate, dull, finely and densely punctate (laterally punctures sometimes indistinct). Notaulus with longitudinal wrinkle. Mesopleuron conspicuously inflated dorsally and ventroposteriorly, densely punctate, smooth between punctures centrally and finely granulate peripherally. Foveate groove in anterior 0.6 of mesopleuron, moderately deep, oblique, not reaching anterior margin of mesopleuron, with transverse wrinkles. Propodeal spiracle separated from pleural carina by almost 4.0 diameters of spiracle. Propodeum with basal keel 0.31× as long as apical area; dorsolateral area granulate, dull, finely and densely punctate (punctures sometimes indistinct); apical area rounded or roundly pointed anteriorly, granulate, without distinct punctures; apical longitudinal carinae anteriorly weak, reaching or not reaching transverse carina.

Fore wing length 3.2 mm. First abscissa of radius straight, longer than width of pterostigma. Metacarp very short, its distal section about 0.4× as long as distance between distal end of radius and apex of fore wing. Second recurrent vein postfurcal. Intercubitus somewhat shorter than abscissa of cubitus between intercubitus and second recurrent vein. Posterior abscissa of nervulus short and pale, thus the brachial cell seems to be rather widely open posteriorly. Hind wing with nervellus slightly reclivous.

Legs slender. Hind femur 3.9× as long as broad and 0.8× as long as tibia. Spurs of hind tibia straight. Tarsal claws weakly curved, not pectinate.

Tergite 1 of metasoma slender (petiole very thin), smooth, round in cross-section, 3.6× as long as broad posteriorly, without any vestiges of glymma. Second tergite almost 1.4× as long as broad anteriorly (1.3× in paratype); thyridial depression long, very shallow and indistinct. Ovipositor slender, upcurved, with very shallow dorsal subapical depression; sheath 2.3× as long as hind tibia and 2.1× (1.8× in paratype) as long as first tergite.

Head, mesosoma and tergite 1 of metasoma black. Antenna black, scape and pedicel brownish black. Palpi brownish. Mandible (except for blackish teeth) and lower 0.4 of clypeus brownish yellow. Tegula fuscous. Pterostigma in dorsal view brown, with conspicuous white marks proximally and distally, and in ventral view yellow peripherally and brownish centrally. Legs brownish yellow, fore coxa blackish basally, mid coxa blackish and hind coxa black, trochanters infuscate and apical one or two tarsomeres of all tarsi fuscous. Metasoma behind tergite 1 dark brown.

Male. Unknown.

Holotype: ♀ SOUTH AFRICA: Western Cape: Elandsfontein farm, Site E 4, 32°17.69'S 23°00.57'E, Nama Karoo on dolerite soils, 21.iv.2001, S. van Noort & H.G. Robertson, Malaise trap, BW01-E4-M03, SAMHYM-P0024894 ( SAMC).

Paratype: SOUTH AFRICA: Western Cape: 1♀ Elandsfontein farm, Site E 5, 32°18.14'S 22°56.85'E, Nama Karoo on dolerite soils, 27.iv.2001, S. van Noort & H.G. Robertson, Malaise trap, BW01-E5-M36, SAMHYM-P0024893 ( ZISP) .

Figures

Figs 7–12. Diaparsis aneucliformis sp. n., ♀: (7, 9–11) holotype:(7) antenna and mesoscutum, dorsolateral view, (9) head and anterior part of mesosoma, lateral view, (10) apex of fore wing, dorsal view, (11) mid and hind legs, lateral view; (8, 12) paratype: (8) head, dorsal view, (12) apex of metasoma with ovipositor, lateral view.