Parsteres, Gadelha & Nunes & Oliveira, 2016

Gadelha, Sian De Souza, Nunes, Juliano Fiorelini & Oliveira, Marcio Luiz De, 2016, New genera, species and records of Doryctinae (Hymenoptera: Braconidae) from Brazil, Zootaxa 4083 (3), pp. 359-370 : 360

Parsteres n. gen.

Type species. Parsteres pilosus n. sp.

Diagnosis. This genus is similar to Doryctinus Roman, 1910, but differing by having the length of the first tergum almost equal its apical width ( Fig. 1E ) (length about twice the apical width in Doryctinus), terga 3–5 with a posterior smooth area bordered by a sinuous carina with small setae ( Fig. 1F ) (sculpture absent in Doryctinus), fore wing vein r with more than 0.5 length of 3RSa (vein r length smaller than 0.5 of 3RSa in Doryctinus), and the basal median areas of propodeum are smooth ( Fig. 1D ) (propodeum rugose in Doryctinus).

Description. Body length: 80–100 mm; body with a lot of setae; face rugose and slightly swollen at the center, vertex and temple smooth; occipital carina present, not meeting the hypostomal carina; mesoscutum declivous anteriorly; precoxal sulcus smooth, extending until the end of mesopleuron; basal median areas of propodeum smooth; first metasomal tergum with two median carinae that do not reach the posterior edge of tergum, length almost equal to its apical width; basal sternal plate no more than 0.25 length of the first tergum; terga 3–5 with a posterior smooth area bordered by a sinuous carina with small setae ( Fig. 1F ); hind coxa with basoventral tubercle; fore wing vein r-m present; vein r greater than 0.5 length of 3RSa; first subdiscal cell open at apex, 2cu-a vein absent; hind wing M+CU less than 0.5 length of 1M. Male body with lower density of bristle than female, face not swollen, hind wing with stigma, terga 3–5 with narrower smooth areas.

Distribution. Brazil (states of Roraima, Amazonas and Maranhão).

Biology. Unknown.

Etymology. The genus name is from the Latin pars and the Latin teres in reference to the smooth part of the metasomal terga 3–5.

Additional material analyzed. One male, “ BRASIL, RR[Roraima], Rio Uraricoera, Ilha de Maraca ; 21– 30.xi.1987, Fogging, J. A. Rafael e equipe col”, ( INPA)

Comments. In addition to the specimens of Parsteres pilosus n. sp. a male from Roraima, a state in the northern Amazon, was also analyzed, but due to morphological differences from the female (the type species of the genus) coming from Maranhão, it was not possible to assign it to this species. It may be a new species or a case of pronounced dimorphism between male and female. Until more specimens of this genus can be analyzed, the male could not be identified as P. pilosus n. sp., but it clearly belongs to the genus.

Figures

FIGURE 1. Parsteres pilosus n. sp. (holotype) A. lateral habitus, B. dorsal mesoscutum, C. lateral mesosoma, D. latero-dorsal pronotum, E. dorsal metasoma, F. dorsal metasomal terga 3 – 7.