Dolichomitus jatai, Loffredo, Ana Paula da Silva & Penteado-Dias, Angelica Maria, 2012

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 : 98-100

Dolichomitus jatai sp. n. Figures 1 –27– 13

Material examined.

Type locality. Brazil, SP, Luís Antônio, Estação Ecológica de Jataí, 21°35'16.7"S, 47°47'43.9"W; 15.X.2009; Brazilian savannah, N.W. Perioto and team col., Malaise trap.

Type specimen.

Holotype pinned (DCBU): female, Brazil, SP, Luís Antônio, Estação Ecológica de Jataí, Brazilian savannah, 21°35'16.7"S, 47°47'43.9"W, 15.X.2009, Armadilha Malaise II, N.W. Perioto and team col.

Paratypes (DCBU). 1 female, same as the holotype, 16.IX.2009; 2 females and 1 male, same as the holotype, 21°36'10.2"S, 47°46'47.6"W, 16.IX.2009, 27.V.2009 and 03.IX.2008, respectively; 1 male, Brazil, SP, Macaubal, 20°44'34"S, 49°55'45'W, 03.IV.2008, semideciduous seasonal forest, F. Noll col., Malaise trap; 1 male, Brazil, SP, Itirapina, 22°13'09"S, 47°54'04"W, 6.XII.2008, riparian forest, A.M.P. Dias col., Malaise trap; 1 male, Brazil, SP, São Carlos, Fazenda Pinhal, 22°08' 21.80"S, 47°50' 56.57"W, 20.XI.2004, A.M.P. Dias col., Malaise trap.

Holotype: female (Fig. 1). Body length: 13.7 mm; fore wing length: 9.0 mm. Head (Fig. 7). Antenna with 35 segments, the last flagellomere 2.5x as long as the anterior; mandible with upper tooth more or less equal in length to the lower tooth; clypeus apically bilobate; lower face centrally punctuated with hairs. Occipital carina mid-dorsally dipped; occiput with a mid-dorsal notch (Fig. 8). Anterior margin of pronotum reflexed upward; epomia distinct; mesoscutum with setiferous punctures; notauli very strongly impressed anteriorly (Fig. 9). Mesopleuron smooth and shiny centrally; epicnemial carina very strong ventrally, with a shallow mid-ventral dip; metapleuron punctate with hairs; submetapleural carina complete; propodeum (Fig. 10) dorsally smooth, with setiferous punctures anterolaterally; pleural carina complete.

Metasoma: Tergite I of the metasoma (Fig. 11) with a smooth central area that is defined laterally by carinae convergent posteriorly to the hind margin; tergite II punctuate with hairs, 1.1 times as long as posteriorly broad, with a shallow groove anterolaterally, margin posteriorly smooth and polished; tergites III + with setiferous punctures, posterior margin smooth and polished. Ovipositor 5.6 times the length of the hind tibia, more or less straight (Fig. 12).

Color: Yellow and black or dark brown; head yellow, tips of mandible and occiput black; antenna with scape and pedicel yellow, proximal five flagellomeres black, the 6th and 7th yellow, the remainder brownish; mesoscutum with three black stripes; the anterior margin and posterior lateral margin of the propodeum with a narrow black stripe; pronotum, mesopleuron and metapleuron with a black posterior margin; the posterior margin of tergites II–VI black; tergites III+ dark brown. Legs yellow, fore-femur black, striped dorsally; tips of all tarsal claws brownish yellow. Ovipositor sheath brownish. Wings yellowish; pterostigma brownish.

Male (Fig. 2). Essentially as the female but with body length 10.9 mm; fore wing all yellowish with length 8.6 mm; antenna with 34 segments, the last flagellomere 1.5x as long as the anterior; the proximal four segments brown, the 5th, 6th and 7th slightly yellowish and the remainder brownish; mid-coxa with surface evenly convex (Fig. 13).

Etymology.

The name of the species refers to the locality of collection of the material for study.

Distribution.

Brazil.

Dolichomitus jatai sp. n. seems to belong to the zonatus species group, which are vespid mimics and are predominantly yellowish with brown or black marks; the wings are yellowish, and the males have shorter bodies. This species is similar to Dolichomitus annulicornis (Fig. 3), differing in the color of the flagellomeres: whereas the proximal five flagellomeres are black and the 6th and 7th yellow in Dolichomitus jatai sp. n., the proximal three or four flagellomeres are black and the next four or five whitish yellow in Dolichomitus annulicornis . The propodeum is dorsally smooth in Dolichomitus jatai sp. n., whereas in Dolichomitus annulicornis , there is a smooth and polished area that widens posteriorly. The males of the two species differ in the form of the mid-coxa: in Dolichomitus annulicornis , there are prominences separated by deep concavities (Fig. 14), and in Dolichomitus jatai sp. n., the surface of the mid-coxa is evenly convex (Fig. 13). In Dolichomitus zonatus , the propodeum is similar to that of Dolichomitus annulicornis , but it is narrower posteriorly. Dolichomitus cantillanoi has a narrower median longitudinal groove and distinct lateromedial secondary furrows, which are never present in Dolichomitus zonatus , Dolichomitus annulicornis or Dolichomitus jatai sp. n. Dolichomitus bivittatus , Townes, 1975, and Dolichomitus hypermeces , Townes, 1975, are different in color and have longer ovipositors, 12.0 × and 21.0 × as long as the hind tibia, respectively.