Epirhyssa uelensis Benoit, 1951

Rousse, Pascal & Noort, Simon Van, 2014, A review of the Afrotropical Rhyssinae (Hymenoptera: Ichneumonidae) with the descriptions of five new species, European Journal of Taxonomy 91, pp. 1-42 : 32-34

publication ID

https://doi.org/ 10.5852/ejt.2014.91

publication LSID




persistent identifier


treatment provided by


scientific name

Epirhyssa uelensis Benoit, 1951


Epirhyssa uelensis Benoit, 1951 View in CoL

Fig. 10 View Fig


Bright yellow overall with isolated dorsal black markings; wings hyaline, slightly infuscate apically; face rugulose-punctate and moderately protruding dorsally; clypeus nearly smooth, with median subapical tubercle strong, ventral margin produced laterally; frons nearly smooth, with a mid-longitudinal carina reaching median ocellus and lateral curved carina toward lateral ocellus; antenna with 32–34 flagellomeres; mesopleuron with epicnemial carina reaching level of mesopleural pit; subtegular ridge concave, laterally flanged; fore wing with 2m–cu slightly apical to rs–m; tergite 1 stout in female, very slender in male; tergites 1–3 smooth, following tergites shallowly punctate with basal transverse striations; apical margins of tergites 3–6 moderately concave. CT 2.9; ML 0.6; POL 1.2; OOL 1.3; Fl 1 3.8; Fl 15 2.2; FL 33 0.9; T1 1.2–1.3; OT 4.1.

Differential diagnosis

A mostly bright yellow species with hyaline wings, otherwise characterized by the combination of the concave subtegular ridge, the mid-longitudinal carina on the frons and the stout tergite 1 of the female. The only other species with a concave and flanged subtegular ridge is E. gavinbroadi , in which the clypeus is distinctly punctate.

Material examined


DEMOCRATIC REPUBLIC OF CONGO: ♀, Haut-Uele , Paulis [Isiro, 03°28’ N 25°43’E], xii-1947, P.L.G. Benoit ( MRAC). GoogleMaps


DEMOCRATIC REPUBLIC OF CONGO: 1 ♂, Bambesa, Jul. 1933, H.J. Bredo ( MRAC).

Other material

CAMEROON: 1 ♀, Nkoemvon, 30 Mar.–19 Apr. 1980, Ms. D. Jackson ( BMNH); 2 ♀♀, same label data except 13 Jul.–4 Aug. 1980 ( BMNH); 1 ♀, same label data except Oct.–Nov. 1980 ( BMNH).


Female (5 specimens)

B 10.4–12.8; A 9.1–12.0; F 8.6–11.5 (holotype B: 10.4; A 9.1; F 8.6).

COLOR. Bright yellow overall, sometimes with infuscate to black mid-longitudinal stripes on tergites 5–7, and black markings: mandible, ocellar area ( macula connected to eye margin), upper occiput and mesoscutum but lateral margins and a large central macula , sometimes apex of scutellum, basal margin and apex of propodeum; ovipositor sheath reddish testaceous; wings hyaline, weakly infuscate apically, venation brown.

HEAD. Face rugulose-punctate and moderately protruding dorsally; clypeus smoothly sculptured, with a strong subapical median tubercle, ventral margin moderately produced laterally and medially; mandible stout; frons nearly smooth with sparse fine punctures; inner margins of toruli expanded backwards into two converging weak carinae, carinae then fused into a mid-longitudinal carina reaching median ocellus; frons also with an additional lateral curved carina from posterior margin of torulus to next to lateral ocellus; vertex and temples sparsely punctate, inter-ocellar area somewhat rugose; occipital carina mid-dorsally evanescent; hypostomal carina strongly raised above mandibular base; antenna with 32–34 flagellomeres.

MESOSOMA. Mesosoma shallowly and moderately densely punctate, but mesonotum deeply transversely striate and anterior half of pronotum smooth; epomia moderate; dorsal faint apex of epicnemial carina nearly reaching level of mesopleural pit; apex of subtegular ridge concave, weakly to distinctly flanged laterally; submetapleural carina slightly and evenly narrowed toward apex.

WINGS. Fore wing with 2m–cu slightly apical to rs–m, cu–a slightly apical to Rs+M, Rs strongly bowed forwards; hind wing with distal abscissa of Cu joining Cu&cu–a close to junction with M.

METASOMA. Tergite 1 stout and smooth, tergites 2–3 smooth, tergites 3–6 shallowly punctate with weak transverse striations basally; apical margins of tergites 3–6 moderately concave, others straight.

Male (1 specimen) B 8.5; A 8.2; F 7.9.

Similar to female but metasoma much slenderer (T1 2.0).


Democratic Republic of Congo. New record: Cameroon.


Musée Royal de l’Afrique Centrale













GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF