Acrotaphus kourou Pádua & Sääksjärvi, 2020

Pádua, Diego G., Sääksjärvi, Ilari E., Monteiro, Ricardo F. & Oliveira, Marcio L., 2020, Review of the New World genus Acrotaphus Townes, 1960 (Hymenoptera: Ichneumonidae: Pimplinae), with descriptions of fifteen new species, Zootaxa 4719 (1), pp. 1-62 : 36-38

Acrotaphus kourou Pádua & Sääksjärvi sp. n.

( Figs 127–135 )

Diagnosis. This species can be distinguished from all other Acrotaphus by the combination of the following characters: 1) margin of gena behind eyes convex in dorsal view; 2) posterior ocelli separated from eyes by 0.6× its diameter in dorsal view; 3) mesosoma black, except tegula, scutellum, postscutellum and posterior region of propodeum orange; 4) ovipositor slender, 1.2× as long as hind tibia.

Description. Female. Body [6.0] mm. Head. Lower face [1.1]× as broad as high (from supraclypeal suture to base of antenna), flat, with scattered punctures which bear long conspicuous bristles; head in dorsal view with margin of gena convex behind eyes; margin of gena [0.65]× length of eye in dorsal view; posterior ocelli separated from eyes by [0.6]× its diameter in dorsal view. Mesosoma. Pronotum moderately long, smooth and polished, with distance from tegula to head greater than [0.65]× distance from tegula to hind margin of propodeum; mesoscutum smooth and polished, with notaulus weakly marked; scutellum, in dorsal view, more or less triangular; mesopleuron polished, with fine bristles ventrally; epicnemial carina present ventrally, extending until reaching the level of the lower corner of the pronotum laterally; metapleuron polished, with fine bristles evenly spaced; propodeum smooth dorsally, laterally with scattered fine bristles. Fore wing [5.2] mm; cu-a opposite to the base of Rs&M; 2 rs-m [0.5]× as long as abscissa of M between 2 rs-m and 2 m-cu; hind wing with abscissa of Cu 1 between M and cu-a [0.65]× length of cu-a. Tarsal claw with basal lobe quadrangular, with claw apex slightly overtaking the posterior margin of lobe. Metasoma. Tergite I [1.4]× as long as posteriorly broad; tergite II [1.0]× as long as posteriorly broad; tergite III [1.0]× as long as posteriorly broad; tergites IV–V [1.0]× as long as posteriorly broad; ovipositor slender, [1.2]× as long as hind tibia; lower valve with slightly swelling in the base and mid region.

Coloration. Head black, with clypeus brownish, mouthparts yellowish, except apex of mandible black; antenna dark brown. Mesosoma black, except tegula, scutellum, postscutellum and posterior region of propodeum orange. Metasoma orange with tergite V black, except basal region orange and tergites VI+ black. Anterior leg orange, mid leg orange, except coxa black and hind leg entirely black. Wings yellowish; fore wing with apex distal to 2 rs-m black, and with a black median band extending backwards from anterior margin, just proximal to the pterostigma, right through the 1 st subdiscal cell; pterostigma yellowish. Ovipositor brownish, except apex pallid and sheath dark brown.

Male. ( Figs 130–131 ). Similar to female in structure and coloration, except body 0.7 mm; lower face 1.0–1.1× as broad as high (from supraclypeal suture to base of antenna); head in dorsal view with margin of gena convex behind eyes; margin of gena 0.6× length of eye in dorsal view; posterior ocelli separated from eyes by 0.8× its diameter in dorsal view; fore wing 6.5 mm; tergite I 1.3–1.4× as long as posteriorly broad; tergite II 1.1× as long as posteriorly broad; tergite III 1.0× as long as posteriorly broad; sternite IX ( Fig 133 ) longer than high, with lateral and anterior margins strongly sclerotised, lateral margin flat and posterior margin slightly concave in central region, with few bristles widely spaced posteriorly. Genital capsule ( Figs 134–135 ): Paramere truncated apically, slightly narrower than the parameral lamina, with bristles except in posterior margin; volsellar lamina with spaced bristles laterally and apically, except on the median and posterior regions and with a set of about four bristles in anterolateral region, just below the base of the digitus; cuspis robust with about five to six teeth more or less aligned in the mid part until apex and with some small bristles in basal region and spaced laterally in apical region; digitus with teeth on apex, rounded distally and angular ventrally, with the margins of the apical region narrower than base; aedeagus with small teeth on apex and its apex slightly curved downward in lateral view. We do not entirely sure of this association with females, so we are not treating them here as paratypes.

Type material. Holotype: ♀, FRENCH GUIANA, Kourou , piste Soumourou, ix.2002 (D. Faure rec.), ZMUT . Paratypes: some holotype, but M. [= Montagne] de Kaw, Patawa, viii.2003 (O. Morvan leg.), 1♀, ZMUT .

Other material examined. Peru: CU [= Cusco], La Convención, Echarate, CC . [=Comunidad] Tupac Amaru , 11°56’42,14’’S / 72°54’57,78’’W, 444 m., 12–14.x.2008, Light (M. Alvarado & E. Rázuri leg.), 1♂ [with last tergites extracted], ZMUT ; idem, but Timpia , 12°06’47,04’’S / 72°49’34,56’’W, 519 m., 20–21.x.2009, 1♂, ZMUT .

Distribution. French Guiana and Peru ( Fig 136 ).

Biological notes. Host unknown.

Etymology. The specific name (in apposition) refers to type locality, Kourou, French Guiana.

Comments. Acrotaphus kourou sp. n. closely resembles A. micrus sp. n. mainly by the margin of gena being convex behind eyes in dorsal view and mid coxa black. It differs from it by having mesosoma black, except tegula, scutellum, postscutellum and posterior region of propodeum orange and ovipositor 1.2× as long as hind tibia (mesosoma orange with pronotum black, except its distal half orange and metapleuron black and ovipositor 1.5× as long as hind tibia, in A. micrus sp. n.).

Figures

FIGURES 127–136. Acrotaphus kourou sp. n.: 127, habitus ♀ (holotype); 128, head, dorsal view ♀ (holotype); 129, face, frontal view ♀ (holotype); 130, habitus ♂; 131, head, dorsal view ♂; 132, tarsal claw, scale bar =0.2 mm; 133, sternite IX ♂, scale bar =0.005 mm; 134, genital capsule, lateral view ♂, scale bar =0.005 mm; 135, genital capsule, ventral view ♂, scale bar =0.005 mm. 136. Distribution of Acrotaphus kourou sp. n. in the Neotropical region.