Stenomacrus payet Rousse et Villemant

Rousse, Pascal & Villemant, Claire, 2012, Ichneumons in Reunion Island: a catalogue of the local Ichneumonidae (Hymenoptera) species, including 15 new taxa and a key to species, Zootaxa 3278, pp. 1-57 : 44

Stenomacrus payet Rousse et Villemant , sp. nov.

( Fig. 18 c–d)

Diagnosis. Species characterized by the coarse sculpture of metasomal tergites I-II, longitudinally striate, with antero-oblique and transverse postmedian impressions. The antennae are medially whitish.

Description. FEMALE ( 14 specimens). Fore wing length 1.6–2.1 mm.

Head. Temples null, head extremely short behind eyes, in dorsal view about 1.5x longer at inner orbit level than centrally; occiput strongly concave, occipital carina absent; vertex and frons smooth; face with sparse minute punctuation; sub-ocular sulcus deep; mandible bidentate, lower tooth hardly visible on inner face of mandible; flagellum with 20–22 segments, FLi1 = 6, FLi2 = 5.5, FLi3 = 5.

Mesosoma. Thorax polished; notaulus absent; scutellum sub-triangular in dorsal view, carinated to apex; upper part of epicnemial carina hardly discernable on mesopleuron between lower corner of pronotum and middle of its posterior margin; propodeum with a strong posterior transverse carina and latero-median longitudinal carinae present only apically. Hind tibia with an apical fringe of strong and dense vertical hairs on inner side. Fore wing with areolet open and apico-dorsal venation almost unpigmented; hind wing with 1/Cu&cu-a reclivous.

Metasoma. Tergite I coarsely wrinkled longitudinally but with distinct latero-median carinae converging to the middle of the tergite and then parallel; tergite II longitudinally striate, striation shallower posteriorly; tergite II with a triangular median area defined by the antero-oblique and transverse postmedian impressions; tergite III and following polished; ovipositor sheath typical of the genus with base hairless and apex setose, OTi = 0.7.

Color. Head testaceous, mouthparts ivory white, antenna brown with scape and pedicel yellow ventrally and flagellomeres 6–11 whitish with a very thin brown apical ring, the previous flagellomeres sometimes whitish ventrally; pronotum and pro-and mesosternum yellow, the rest of meso- and metasoma brownish to testaceous; mesopleuron lighter ventrally. Legs yellow, coxae 1–2 and all trochanter whitish; hind tibia and tarsus infuscate; wings hyaline.

MALE. Unknown.

Comments. No other Stenomacrus species have been reported in the Ethiopian region.

Distribution records. Reunion.

Type material. HOLOTYPE Ƥ ( MNHN EY 3899) Verbatim label data: La Réunion, Ste Rose, Pandanus sp., alt. 150m, 02/2008, leg. Rousse, complete. PARATYPES ( MNHN EY 6312–6313 and EY 6448–6450)1Ƥ St Joseph / Langevin, alt. 230m, III.2008, leg. P. Rousse; 1Ƥ Bras Panon / La Caroline, alt. 230m, XII.2010, leg. P. Rousse; 2Ƥ, same locality, X.2010, leg. Cirad; 1Ƥ St Paul / Tan Rouge, alt. 800m, II.2011, leg. Cirad. Other material 2Ƥ Bras Panon / La Caroline, alt. 130m, X.2010, leg. P. Rousse; 1Ƥ St Pierre / Bassin Martin, alt. 290m, III.2011, leg. Cirad; 7Ƥ St Paul / Tan Rouge, alt. 800m, II.2011, leg. Cirad.

Figures

FIGURE 18. Ophioninae, Orthocentrinae and Tersilochinae (females), habitus and faces. a-b: Enicospilus vitry sp. nov. c-d: Stenomacrus payet sp. nov. e-f: Diaparsis ramassamy sp. nov.