Physotarsus tampobata Reshchikov and Sääksjärvi, 2015

Reshchikov, Alexey & Sääksjärvi, Ilari Eerikki, 2015, Seven new species of the genus Physotarsus Townes 1966 (Hymenoptera, Ichneumonidae) from South America, Zootaxa 3972 (1) : -

Physotarsus tampobata Reshchikov and Sääksjärvi sp. n.

Figs 20–23 .

Diagnosis. Physotarsus tampobata Reshchikov and Sääksjärvi sp. n. can be distinguished from all other described species of Physotarsus by the combination of the following characters: 1) very short first metasomal tergite (1.1 times as long as apically broad), 2) entirely yellowish red head, metasoma, hind tibiae and tarsi ( Figs 20–23 ).

Description. Female. Body length 5 mm. Antennae with 26 flagellomeres each. Scapus 0.6 times as broad as long. Head slightly narrowed behind the eyes, shining. Maximal length of temple 0.89 times transverse eye diameter; minimal length of temple 0.78 times transverse eye diameter. Face 1.13 times height of eye; moderately flat, with bulge. Face sparsely covered with pale setae ( Fig. 22 ). Interantennal area flat. Clypeus separated from face by transverse groove; projecting anteriorly, with wide central lobe. Clypeus about 2.7 times as wide as long. Clypeal foveae not large, pointed laterally. Lateral ocelli separated by about 1.2 times their widest diameter from each other and about 2.2 times their widest diameter from eye margin. Malar space 0.5 times basal mandible width. Occipital carina present on ventral part of head. Lower mandible tooth longer than upper.

Mesosoma smooth, shining, without punctures. Pronotum smooth, impunctate, shining. Mesoscutum shining and impunctate. Notaulus shallowly impressed at base. Epicnemial carina strongly turning towards anterior margin of mesopleuron. Mesopleuron impunctate, shining. Tarsal claws elongate, not pectinate. Hind tarsi 1.2 times as long as hind tibia; each article of hind tarsi length ratio 20:8:4:4:5. Fore wing stigma about 3.2 times longer than wide. Radius intercepted stigma at its middle. Second recurrent vein with a single bulla. Nervellus intercepted below middle. Nervulus intersticial. Propodeum without carinae.

Metasoma shining. First metasomal tergite 1.1 times as long as apically broad; without shallow median longitudinal impression and longitudinal carinae. Second metasomal tergite transverse. Subgenital plate not enlarged, in male shallowly U-shaped notched ( Fig. 23 ). Parameres not shorter than aedeagus ( Fig. 23 ). Aedeagus wide in basal and apical parts ( Fig. 23 ). Ovipositor straight, as long as height of metasoma apically ( Fig. 21 ).

Color. Yellow red ( Figs 20–23 ). Antennae and hind tarsi and tibiae apically dark. Fore wing hyaline, apically infuscate.

Material. Holotype female, Peru, Madre de Dios, Rio Tampobata , 290m., 12°50’S 069°17’W, Canopy fogging, 12.ix.1984, T.L. Erwin et al., ZMUT; male, the same location, ZMUT.

Distribution. Peru.

Etymology. The species epithet refers to the river Tambopata ( Peru) which is located close to the type location.

Figures

FIGURES 20 – 23. Holotype female Physotarsus tampobata Reshchikov and Sääksjärvi sp. n. 20) habitus; 21) ovipositor; 22) face; 23) male genitalia.