Epirhyssa tombeaodiba, Rousse & Noort, 2014

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 : 30-32

Epirhyssa tombeaodiba sp. nov.

urn:lsid:zoobank.org:act:134C55D0-CBC2-4788-B199-2197C7344475

Fig. 9

Diagnosis

Bright yellow overall with isolated dorsal black markings; wings hyaline, slightly infuscate apically; face rugulose-punctate, distinctly protruding dorsally; clypeus shallowly longitudinally strigose with a strong subapical median tubercle, ventral margin hardly produced laterally; frons smooth, with a weak mid-longitudinal carina reaching median ocellus; mesopleuron with epicnemial carina reaching level of mesopleural pit; subtegular ridge convex; fore wing with 2m–cu distinctly apical to rs–m; tergite 1 stout in female (male unknown); tergite 1 about smooth, following tergites more or less densely punctate; apical margins of all tergites straight. CT 2.8; ML 0.7; POL 1.3; OOL 1.3; Fl 1 4.0; Fl 15 2.2; T1 1.2; OT 4.0.

Differential diagnosis

Bright yellow species with wings hyaline, otherwise characterized by the combination of the entirely punctate tergite 2, the weak mid-longitudinal carina on the frons and the stout tergite 1. It is the only known yellow Epirhyssa species with both a distinctly sculptured clypeus and a stout tergite 1.

Etymology

Refers to Mrs Jackson’s ambiguous marital status as reported by label data. In the Duala language, “tómbea ó dibá” means “to get married” for a woman.

Type material

Holotype

CAMEROON: ♀, Nkoemvon [02°48’N 11°08’E], 16 Mar.–4 May 1980, Ms. D. Jackson ( BMNH). Paratypes

1 ♀, same label data ( BMNH); 1 ♀, same label data except: 30 Mar.–19 Apr. 1980 ( BMNH); 1 ♀, same label data except: Korup 1981, Mrs D. Jackson ( BMNH).

Description

Female (4 specimens)

B 7.2–8.9; A 9.5; F 9.0–10.5. (holotype B: 8.0; A NA; F 9.9).

COLOR. Bright yellow overall with black parts: mandible, ocellar area ( macula connected to eye margin), a median spot on each mesoscutal lobe, scuto-scutellar groove, a mid-longitudinal macula of variable length on tergites 4–7; flagellum dark brown; flagellum and ovipositor sheath reddish-brown; wings hyaline, slightly infuscate apically, venation brown.

HEAD. Face subquadrate, rugulose-punctate, distinctly protruding dorsally; clypeus longitudinally strigose, with a strong subapical median lobe, ventral margin hardly produced laterally; mandible stout; frons, vertex and temple sparsely and shallowly punctate; inner margins of toruli expanded backwards into two converging weak carinae, carinae then fused into a mid-longitudinal carina reaching median ocellus; occipital carina mid-dorsally interrupted; antenna with at least 22 flagellomeres (no specimen with complete flagellum).

MESOSOMA. Mesosoma shallowly and moderately densely punctate, but mesonotum deeply transversely striate and anterior half of pronotum smooth; epicnemial carina reaching level of mesopleural pit; apex of subtegular ridge convex, not flanged laterally; submetapleural carina slightly enlarged anteriorly, then evenly narrowed toward apex, strongly notched at anterior third in one paratype.

WINGS. Fore wing with 2m–cu distinctly apical to rs–m, cu–a barely apical to Rs&M, and Rs moderately bowed forwards; hind wing with distal abscissa of Cu joining Cu&cu–a shortly below junction with M.

METASOMA. Tergite 1 moderately stout, nearly smooth; following tergites shallowly and more or less densely punctate, punctation progressively finer toward apex; apical margins of all tergites straight.

Distribution

Cameroon.

Figures

Fig. 9. Epirhyssa tombeaodiba sp. nov., holotype, ♀. A. Habitus, lateral view (inset: data labels). B. Mesosoma, lateral view. C. Metasoma, dorsal view. D. Head, anterior view. E. Mandibles, anterior view.