Pristomerus wolof, Rousse & Noort, 2015

Rousse, Pascal & Noort, Simon van, 2015, Revision of the Afrotropical species of Pristomerus (Ichneumonidae: Cremastinae), with descriptions of 31 new species, European Journal of Taxonomy 124, pp. 1-129 : 109-111

Pristomerus wolof sp. nov.

urn:lsid:zoobank.org:act:50B591FF-D0D9-429C-9644-4A3F8E5B8C12

Fig. 42

Diagnosis

Small to moderately small; pale yellow to yellowish with base of tergites 2–3 black; femora and trochanters apically white-dotted; pterostigma anteriorly paler; face and clypeus moderately to densely punctate, remainder of head more finely sculptured; clypeus strongly transverse; inner margins of eyes subparallel; malar line moderately short; ocelli small; antenna long with 32–34 flagellomeres; mesosoma moderately elongate, densely punctate-granulate but upper pronotum and ventral half of speculum smooth; female femoral tooth barely distinct; ovipositor long, apically strongly sinuous. Male with ocelli and femoral tooth hardly enlarged, inner margins of eyes slightly diverging ventrally, area superomedia more slender, and mesoscutum sculpture smoother.

Differential diagnosis

Rather to fairly small, yellow to pale yellow overall; otherwise distinguished from all other Afrotropical species by the strongly transverse clypeus, the weak but distinct female femoral tooth and the long ovipositor. Pristomerus wolof sp. nov. is part of the P. masai sp. nov. species-complex (see comments for P. masai sp. nov.): the reduced femoral tooth and barely enlarged ocelli in both sexes differentiate P. wolof sp. nov. from P. masai sp. nov. It is also somewhat morphologically similar to P. sara sp. nov., whose ovipositor and malar line are shorter and whose femoral tooth is totally absent in the female.

Type material

Holotype

GUINEA-BISSAU: ♀, “ Guinea-Bissau: Região Cacheu, 10 km W of São Domingos 31.x.1992 (17.45– 18.45), swampy grassland with bushes, palm trees and some hardwood trees at river-shore. Screensweep. leg. Michael Söderlund SAM–HYM–P047415” ( SAMC).

Paratype

GUINEA-BISSAU: ♂, same label data.

Description

Female (holotype)

B 6.5; A 4.2; F 3.5; CT 2.1; ML 0.5; POL 1.4; OOL 1.0; Fl n-1 1.2; ASM 2.3; OT 2.2; FFT 1.

COLOUR. Pale yellow to yellowish-orange, with scutellum and notaulus lighter than remainder of mesonotum; tergites 2–3 basally black; femora and trochanters apically white-dotted; wings hyaline; venation brown, anterior edge of pterostigma whitish.

HEAD. Face densely punctate-granulate, inner margins of eyes subparallel; clypeus strongly transverse, moderately punctate, convex in profile; malar line moderately short; frons finely punctate; vertex and temple coriaceous; antenna long with 34 flagellomeres, penultimate flagellomere slightly elongate.

MESOSOMA. Moderately elongate; pronotum finely and shallowly punctate-granulate, postero-medially smoother, anterior margin crenulate; mesopleuron and metapleuron deeply and densely punctategranulate with a striate oblique furrow below speculum, speculum ventrally smooth; mesoscutum densely punctate-granulate, punctures confluent into fine transverse rugosities, notaulus hardly distinct; scutellum densely punctate; propodeum densely and shallowly punctate-granulate but area petiolaris transversely striate; area superomedia elongate. Legs. Femoral tooth distinct as a small subapical protuberance.

METASOMA. Apical half of tergite 1 and tergites 2–3 aciculate, following tergites coriaceous; thyridium elliptic and wide, its main axis longitudinal; ovipositor long, apically bent and strongly sinuous.

Male (paratype)

B 6.3; A 4.0; F 3.5; POL 0.7; OOL 1.3. Ocelli barely larger; femur barely swollen, femoral tooth slightly larger; antenna with 32 flagellomeres; inner margins of eyes slightly diverging ventrally; mesoscutum mostly granulate with punctures along notaulus; otherwise similar to female.

Distribution

Guinea-Bissau.

Figures

Fig. 42. Pristomerus wolof sp. nov. Holotype, ♀. A. Habitus, lateral view. B. Head, mesosoma, dorsal view. C. Head, anterior view. D. Propodeum, dorsal view. E. Mesosoma, lateral view. F. Hind tibia, lateral view (inset: data labels).