Rhinotorus longicornis ( Schmiedeknecht, 1914 )

Reshchikov, Alexey V., 2016, A revision of the genus Rhinotorus Förster, 1869 (Hymenoptera, Ichneumonidae, Ctenopelmatinae), with descriptions of three new species and an illustrated identification key, European Journal of Taxonomy 235 (235), pp. 1-40 : 19-21

Rhinotorus longicornis ( Schmiedeknecht, 1914)

Fig. 8

Spudaea longicornis Schmiedeknecht, 1914: 2884–2885 .

Diagnosis

This species is distinguished from other species in the genus by the following characters: face entirely black ( Fig. 8C ); clypeus relatively wide and not projecting centrally ( Figs 3 , 8C ); mesopleuron shining and distinctly punctate; scutellum black ( Fig. 8A ); metasoma excluding first metasomal tergite reddish ( Fig. 8B ); first metasomal tergite either with projections at spiracles or narrow basally ( Fig. 8B ).

Material examined

HUNGARY: 1 ♀, HNHM.

U. K.: 1 ♀, England, Surrey, Oxshott, 24 May 1930, leg. J. F. Perkins, BMNH; 1 ♀, England, Buckinghamshire, Wendover, 22 May 1960, leg. R. B. Benson, BMNH; 2 ♀♀, England, Devon, Teignbridge, Newton Abbot, 1 Jun. 1941, leg. J. F. Perkins, BMNH.

Description

Female

Fore wing around 8–9 mm long. Antenna slender, about as long as fore wing, with 33 flagellomeres. Ratio of length of 1 st plus 2 nd flagellomeres to eye height 1.1. Scape as broad as long. Head not narrowed behind eyes, matt, with dense, fine punctures on shagreened surface ( Fig. 8D ). Lateral ocellus separated from eye margin by 1.6 times their widest diameter. Face transverse, 2 times as wide as high, and densely punctate ( Fig. 5C ). Clypeus 0.3 times as high as wide and distinctly separated from face by a deep impression, projecting medially, shining and sparsely punctate, its apical margin obtuse medially and impressed laterally. Clypeal fovea deep. Malar space 0.6 times basal mandible width. Occipital carina complete. Mandible teeth of equal length.

Mesoscutum weakly shining and finely granulate, with dense and coarse uniform punctation. Notaulus distinct. Mesopleuron shining and finely punctate ( Fig. 8E ). Metapleuron smooth and weakly shining, with dense punctation. Propodeum weakly rugose. Area superomedia fused with area basalis, their combined area around 2.5 times as long as broad. Costula absent. Area apicalis trapezoidal, 0.6 times as long as broad and equal to 0.4 of propodeum, often with longitudinal carina and sometimes with striation. Spiracles weakly oval, 1.4 as long as broad. Hind femur 4 times as long as broad. Hind tibia 5.7 times as long as apically broad. First tarsomere of hind leg 7.5 times as long as broad and 2.5 times as long as second tarsomere. Claws not pectinate. Fore wing with pterostigma elongate, around 4 times as long as broad and intercepted by Rs before its middle. 2m-cu weakly curved, with single a bulla. Cu-a inclival, postfurcal. Hind wing with 1/Cu & cu-a intercepted by 2/Cu in lower 0.5.

Metasoma coarsely punctate ( Fig. 8B ). First metasomal tergite as long as apically broad and projecting dorsally, its dorsal longitudinal carinae reaching middle of tergite, with a strong impression between carinae in basal part. Area between dorsal carina and spiracle with longitudinal impression. Spiracles projecting laterally. Subapical impression strong and rather broad. First metasomal sternite 0.2 times as long as its tergite. Second metasomal tergite 0.5 times as long as apically broad, its transverse impression starting immediately after middle of tergite.Third tergite with a distinct transverse impression. Ovipositor sheaths weakly cone-shaped ( Fig. 8E ) and 0.4 times as long as height of last visible tergite. Ovipositor stout at base with shallow subapical notch, tip of upper valve after notch 0.23 times as long as ovipositor length.

Colouration: body mostly black ( Fig. 8 ); apical part of clypeus, legs (except coxa, trochanters, apical part of hind tibia and hind tarsus) and metasoma (except first tergite) reddish.

Male

Unknown.

Host records

Unknown.

Distribution

Germany, Hungary, Poland, U.K.

Figures

Fig. 8. Rhinotorus longicornis (Schmiedeknecht, 1914). A. Mesoscutellum. B. Metasoma dorsally. C. Face. D. Head dorsally. E. Habitus.

Fig. 3. Rhinotorus alpinus (Roman, 1909), lectotype, ♀. A. Face. B. Mesopleuron. C. Propodeum. D. Head dorsally. E. Habitus.

Fig. 5. Rhinotorus compactor (Thumberg, 1822). A. ♀ face. B. Ƌ face. C. Ƌ genitalia. D. Propodeum. E. Metasoma dorsally. F. Head dorsally. G. Ovipositor. H. Mesopleuron. I. Habitus.