Dolichomitus moacyri sp. n.

Loffredo, Ana Paula da Silva & Penteado-Dias, Angelica Maria, 2012, A taxonomic contribution to the genus Dolichomitus Smith (Hymenoptera, Ichneumonidae, Pimplinae) from Brazil, ZooKeys 221, pp. 97-105 : 102-103

Dolichomitus moacyri sp. n. Figures 4 –615– 18

Material examined.

Type locality: Brazil, SP, Poços de Caldas, Sítio da Ferradura, S 21°47'3.4"S, 46°37'22.8"W, 13.X.2006, riparian forest, A.E. de Carvalho col., Malaise trap.

Type specimen.

Holotype pinned (DCBU): female, Poços de Caldas, SP, Brazil, Sítio da Ferradura, 21°47'3.4"S, 46°37'22.8"W, riparian forest, 13.X.2006, Malaise trap.

Paratypes (DCBU): 1 female, Brazil, SP, Itapeva, Estação Ecológica de Itapeva, 24°4'10.7"S, 49°4'10"W, 15.IV.2008, Brazilian savannah, A.M.P. Dias col., Malaise trap; 1 male, Brazil, SP, Santa Rita do Passa Quatro, Parque Estadual de Vassununga - Pé-do-gigante, 21°40'56"S, W 47o37'13"W, 08.X.2007, riparian forest, A.M.P. Dias col., Malaise trap.

Holotype: female (Fig. 4). Length: 16 mm; fore wing length: 12 mm. Antenna with 37 segments; the last flagellomere 2.5 × as long as the anterior; mandible with upper tooth more or less equal in length to the lower tooth; clypeus apically bilobate; lower face (Fig. 15) centrally punctuated; occipital carina mid-dorsally dipped. Epomia distinct; mesoscutum with setiferous punctures; notauli very strongly impressed anteriorly. Mesopleuron mostly centrally smooth and polished, with setiferous punctures; epicnemial carina weak laterally; metapleuron with setiferous punctures; submetapleural carina complete. Propodeum with vestigial lateromedial longitudinal carinae posteriorly divergent with central area smooth, anterolaterally with setiferous punctures (Fig. 16); pleural carinae complete.

Metasoma: Tergite I (Fig. 17) with a smooth central area defined laterally by carinae convergent posteriorly to the hind margin; tergites II punctuate with hairs, 0.8 times as long as posteriorly broad, with a shallow groove anterolaterally; tergites III–V with setiferous punctures and a pair of lateromedial swellings and posterior margin narrow, smooth and polished; tergites VI+ punctate with hairs. Ovipositor 5.0 times the length of the hind tibia, with apex declined (Fig. 18).

Color: Reddish-brown with black and yellow markings. Head yellow with vertex brown; occipital region, central frons and mandible black (Fig. 5); antenna dark brown, three black stripes on mesoscutum; dorselum yellow; propleuron black; tergite I of metasoma brownish, tergite II+ reddish brown; distal tarsomeres dark brown; coxa of first pair of legs black with a whitish spot anteroventrally; trochanter brown, whitish ventrally; trochantelus dark brown; femur and tibia yellow with a black stripe laterally; tarsomeres I–IV yellow, dorsally brown; coxa and trochanter of the second pair of legs dark brown, whitish ventrally; trochantelus brown, femur and tibia yellow with a black stripe laterally; tarsomeres I–IV yellow, dorsally brown; hind leg with coxa orange-brown; trochanter, trochantelus and femur yellow, ventrally brown; tibia and tarsomeres I–II yellow; tarsomeres III–IV and ovipositor sheath dark brown; wings yellowish, fore wing with anterior margin more fuscous; pterostigma yellow.

Male (Fig. 6). Length: 13.3 mm. Fore wing: 11.0 mm; mid-coxa evenly convex. Similar to female, antenna with 40 segments; the last flagellomere 1.5 × as long as the anterior.

Variation.

One female with the first pair of coxa and trochanter yellowish ventrally.

Etymology.

The name of the species is in honor of Moacyr de Carvalho Dias, the owner of the Sitio da Ferradura.

Distribution.

Brazil.

Dolichomitus moacyri sp. n. does not seem to belong to any of Gauld et al.'s (1998) species groups. The ovipositor is only 5.0 times the length of the hind tibia; the fore wing does not have black bands, and the male is similar to the female in size and shape. In the longicauda species group, the male and female are similar in size and shape, but the fore wing is yellow with black bands. Dolichomitus moacyri sp. n. does not belong to the taeniatus, irritator or zonatus species groups because the male and female are not sexually dimorphic. Dolichomitus moacyri sp. n. is different from the species of the group taeniatus because it does not present a yellow dorsal stripe on the pronotum; it differs from species of the group zonatus because it does not present a whitish-yellow band on the flagellum of antenna. Dolichomitus bivittatus and Dolichomitus hypermeces are different in color and have longer ovipositors, at 12.0 × and 21.0 × as long as the hind tibia, respectively.