Polysphincta bonita Padua & Saeaeksjaervi, 2021

Padua, Diego G., Saeaeksjaervi, Ilari E., Spasojevic, Tamara, Kaunisto, Kari M., Monteiro, Ricardo F. & Oliveira, Marcio L., 2021, A review of the spider-attacking Polysphincta dizardi species-group (Hymenoptera, Ichneumonidae, Pimplinae), with descriptions of seven new species from South America, ZooKeys 1041, pp. 137-165 : 137

Polysphincta bonita Padua & Saeaeksjaervi sp. nov. Fig. 1A-E

Diagnosis.

Polysphincta bonita sp. nov. can be distinguished from other species of the P. dizardi species-group by the combination of the following characters: (1) epomia absent (Fig. 1B ); (2) malar space 0.5 times as long as proximal mandibular width (Fig. 1B ); (3) fore wing vein 1 cu-a interstitial relative to M&RS; (4) mesosoma orange (Fig. 1A ); (5) wing hyaline, slightly infuscate (Fig. 1A ); (6) hind leg brownish, except coxa orange and middle inner and outer region whitish (Fig. 1A ); (7) metasoma with tergite I orange with posterior margin black, tergites II-IV brownish with anterior and anterolateral margins whitish and posterior margin black, and tergites V+ brownish (Fig. 1A, E ); (8) ovipositor slightly slender, 1.0 times as long as hind tibia.

Description.

Female. Body about [9.5] mm. Head. Clypeus weakly convex, the posterior margin thin and straight centrally; malar space [0.5] times as long as proximal mandibular width; lower face [1.1] times as broad as high, weakly convex centrally, polished, with fine sparse setiferous punctures; head in dorsal view with margin of the gena weakly convex behind the eyes, and its margin about [0.5] times length of eye in dorsal view; ocelli moderately large, the lateral one separated from compound eyes by [1.1] times their own maximum diameter. Mesosoma. Pronotum without epomia; shelf-like projection, in dorsal view, with the apex bilobed, and in lateral view, with anterolateral part posteriorly rounded and weakly decurved; mesoscutum more or less robust, in dorsal view, smooth and polished, with notauli weakly impressed anteriorly; scutellum convex, not laterally carinate; mesopleuron highly polished, virtually impunctate; epicnemial carina reaching almost to the level of the lower corner of pronotum; epicnemium with a vestigial vertical carina near lower corner of pronotum; metapleuron convex, smooth and polished, with sparse, fine bristles evenly spaced, without a discernible submetapleural carina. Propodeum mediodorsally smooth and polished, with longitudinal carinae present only posteriorly and with scattered fine bristles. Fore wing length about [8.0] mm; 1 cu-a interstitial relative to M&RS; base of 1 m-cu&M separated from CU by about length of 2 cu-a; hind wing with distal abscissa of CU present and complete, well pigmented; first abscissa of RS subequal to rs-m. Tarsal claw with proximal lobe quadrangular, with claw apex slightly overtaking the distal margin of lobe. Metasoma. Tergite I [1.25] times as long as posteriorly broad, dorsally with lateromedian longitudinal carinae only discernible at the extreme anterior part; sternite I with a weak swelling near the hind rim, and with a weak median longitudinal ridge anteriorly; tergite II about [1.25] times as long as posteriorly broad, highly polished, at most with only fine setiferous punctures laterally; tergite III about [1.1] times as long as posteriorly broad, highly polished, at most with only fine setiferous punctures; subgenital plate subquadrate. Ovipositor slightly slender, about [1.0] times as long as hind tibia, posteriorly evenly tapered to a sharp point.

Color.

Head black except posterior 0.8 of clypeus yellowish; antennae brownish with scape and pedicel ventrally yellowish; mouthparts whitish, except apex of mandible blackish. Mesosoma orange. Metasoma with tergite I orange with posterior margin black, tergites II-IV brownish with anterior and anterolateral margins whitish and posterior margin black, and tergites V+ brownish. Fore and mid leg orange, hind leg brownish, except coxa orange and a medium inner and outer region whitish. Wings are hyaline, slightly infuscate, pterostigma brown. Ovipositor brown, with posterior and anterior part whitish.

Male. Unknown.

Type material.

Holotype ♀. Brazil, BA [= Bahia], Camacan, PPPN [sic] [= RPPN, Reserva Particular do Patrimônio Natural], Serra Bonita, IX.2010, Malaise trap 3 (without collector), UEFS.

Distribution.

Brazil (Fig. 13 ).

Biological note.

Host unknown.

Etymology.

The specific name (in apposition) refers to the type locality of this species, RPPN Serra Bonita, Bahia state, Brazil, and also to the beauty of this new species.

Remarks.

Polysphincta bonita sp. nov. closely resembles P. organensis sp. nov. mainly by the coloration, with mesosoma entirely orange and metasoma brownish with tergites II-IV or II-VI whitish in anterior and anterolateral margins. It clearly differs from P. organensis sp. nov. by having ovipositor 1.0 times as long as hind tibia and fore and mid leg orange, hind leg brownish, except coxa orange and a medium inner and outer region whitish (ovipositor >1.2 times as long as hind tibia and fore leg orange, mid leg orange with coxa, trochanter and trochantellus whitish and tarsus brownish, hind leg whitish with coxa inner region, trochanter proximally, trochantellus distal, femur proximally and distally, tibia proximally and distally, first tarsal segment distally, and remaining tarsal segments entirely blackish brown in P. organensis sp. nov.).

Figures

Figure 1. Polysphincta bonita sp. nov., ♀, holotype A habitus, lateral view B head and pronotum, lateral view C face, anterior view D head and shelf-like projection, dorsal view E habitus, dorsal view.

Figure 13. Distribution of Polysphincta dizardi group in the Neotropical Region.