Pristomerus stellatus, Klopfstein, Seraina, 2016

Klopfstein, Seraina, 2016, Revising Australian Pristomerus (Hymenoptera, Ichneumonidae, Cremastinae): species with a tooth on the hind femur, Zootaxa 4168 (2), pp. 201-238 : 231

Pristomerus stellatus n. sp.

Figures 23 , 26

Etymology. This is a very smooth and shining species with weak and sparse punctuation; it obtained its name due to its sparkling appearance.

Description. Known from female holotype only. Fore wing length 5.8 mm. Antenna with 37 flagellomeres. Mesoscutum with only a few weak punctures along front margin and sometimes along notauli. Scutellum without punctures, all smooth and shining. Mesopleuron with only few, weak punctures, mostly smooth and shining; below subtegular ridge smooth and without punctures. Metapleuron with juxacoxal carina absent or at most a short basal carina. Propodeal areas and hind coxa smooth with very few very weak punctures. Hind femur length to width ratio 3.7, ventrally with a large tooth that is longer than width of hind tibia at mid length, and adjacent smaller teeth. Hind tibia 2.1 mm. Second tergite 2.1 × longer than wide at base, smooth and shining. Ovipositor 2.2 × as long as hind tibia.

Colouration. Antenna orange on scape and pedicel, remainder uniformly black. Head entirely orange. Mesosoma including propodeum orange. Hind femur orange, with apex yellow. Hind tibia orange-brown with base and apex broadly darkened. Fore wing strongly infuscate, smoky-brown. Tergite 1 orange at base, black on remainder, tergite 2 black, tergites 3 onwards black or dark brown with wide, light apical bands that are often laterally interrupted by dark round mark.

Notes. This species is very close to P. bicinctus , but can be clearly distinguished by the much weaker punctuation on the mesosoma.

Material examined. Holotype ♀: Label data: ' 4km SSW of Cape; Tribulation nr.; Daintree Qld; 21–22 Nov 1981; D.H. Colless; (Malaise Trap)'; at ANIC.

Figures

FIGURE 23. Holotype of Pristomerus stellatus sp. nov. A. Habitus and ovipositor tip. B. Face. C. Mesoscutum and head from above. D. Head and mesosoma from lateral. E. Propodeum. F. Metasoma. Scale bars represent 1 mm (A) and 0.5 mm (B, C, D, E, F).

FIGURE 26. Distribution maps for the species covered in this work, with the exception of P. atrifemur Girault for which only specimens of uncertain identification or with vague locality data were available.