Campodorus truncatus Sheng, Sun & Li, 2020

Sun, Shu-Ping, Li, Tao, Sheng, Mao-Ling & Lü, Jun, 2020, The species of Campodorus Förster, 1869 and a related species (Hymenoptera, Ichneumonidae) from China, European Journal of Taxonomy 658 (658), pp. 1-26 : 20-22

Campodorus truncatus Sheng, Sun & Li sp. nov.

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Figs 42–51

Diagnosis

Mesosoma coriaceous, almost without punctures. Median longitudinal carinae of propodeum ( Fig. 48 ) strongly narrowed medially. Area petiolaris with strong median longitudinal carina. Propodeal spiracle located at anterior 0.2 of propodeum. Metasomal tergites ( Figs 49–50 ) shagreened. Apex of ovipositor sheath ( Fig. 51 ) truncate.

Differential diagnosis

The new species is similar to C. taigator Kasparyan, 2006 , but can be distinguished from the latter by the following combinations of characters: first flagellomere 1.35 × as long as second flagellomere; apex of ovipositor sheath almost truncated. Hind coxa entirely black. Basal half of hind tibia buff. Campodorus taigator : first flagellomere 1.1 × as long as second flagellomere. Area superomedia absent. Apex of ovipositor sheath rounded. Hind coxa with yellowish brown spot. Basal portion of hind tibia black brown.

Etymology

The specific name is derived from the truncate apex of the ovipositor sheath.

Material examined

Holotype

CHINA • ♀; Liaoning Province, Xinbin ; 29 May 1994; Mao-Ling Sheng leg.; GSFGPM.

Paratype

CHINA • 1 ♀; Liaoning Province, Xinbin ; 28 May 1994; Mao-Ling Sheng leg.; GSFGPM .

Description

Female

MEASUREMENTS. Body length 7.0– 7.5 mm. Fore wing length 7.0–8.0 mm. Ovipositor sheath length 0.4– 0.5 mm.

HEAD. Inner margins of eyes almost parallel. Face ( Fig. 43 ) approximately 1.9 × as wide as long, weakly convex centrally, alutaceous and coriaceous; upper margin with indistinct median small tubercle. Clypeus approximately 3.3 × as wide as long, smooth, shiny, with sparse brown setae; subapical portion distinctly convex transversely; sublateral portion of apical margin triangularly convex in shape. Mandible almost shiny, with relately dense, yellow brown setae; upper tooth slightly longer than lower tooth. Malar area shagreened; malar space approximately 0.7 × as long as basal width of mandible. Gena ( Fig. 44 ), vertex ( Fig. 45 ) and frons coriaceous. Gena wide, in dorsal view 0.9 times as long as width of eye, posterior portion convergent posteriorly. Postocellar line approximately 0.8 × as long as ocular-ocellar line. Frons almost flat. Antenna with 38 flagellomeres, apical portion gradually thin apically; ratio of length from first to fifth flagellomeres approximately: 2.8:2.0:1.7:1.7:1.6. Occipital carina complete.

MESOSOMA. Pronotum( Fig.47 ) coriaceous; upper-anterior portion with distinct transverse wrinkles, lowermedian portion irregularly rugate. Mesoscutum ( Fig. 46 ) finely coriaceous, lateral margin with indistinct fine punctures. Scutellum ( Fig. 46 ), postscutellum finely coriaceous. Mesopleuron ( Fig. 47 ) coriaceous, upper and subanterior portions with indistinct fine longitudinal rugae. Upper end of epicnemial carina approximately reaching to half height of hind margin of pronotum. Speculum smooth, shiny, without punctures. Metapleuron coriaceous, evenly convex, lower-posterior portion with indistinct wrinkles. Ratio of length of hind tarsomeres from first to fifth approximately: 5.7:3.0:2.5:1.4:2.0. Wings slightly brownish, hyaline. Fore wing with vein 1cu-a distal to M&RS approximately by 0.3 × length of 1cu-a. Postnervulus intercepted at middle. Hind wing vein 1-cu slightly longer than cu-a. Propodeum ( Fig. 48 ) with dense indistinct punctures, distance between punctures 0.2–1.0 × diameter of puncture; median longitudinal and posterior transverse carinae complete, strong. Median longitudinal carinae strongly narrowed medially; area basalis and area superomedia confluent; area petiolaris with strong median longitudinal carina. Propodeal spiracle circular, located at anterior 0.2 of propodeum.

METASOMA. Tergites ( Figs 49–50 ) shagreened. First tergite approximately 1.2 × as long as posterior width, evenly narrowed anteriorly; dorsal median carina nearly reaching to middle; spiracle small, circular, slightly convex, located at anterior 0.4 of first tergite. Second tergite ( Fig. 50 ) approximately 0.6 × as long as apical width, with indistinct median transverse depression. Third tergite ( Fig. 50 ) approximately 0.5 × as long as apical width. Ovipositor sheath ( Fig. 51 ) approximately 1.5 × as long as its width, apex almost truncate.

COLORATION ( Fig. 42 ). Black, except for following: flagellum except basal portion, red brown ventrally, black brown dorsally; clypeus, mandible except teeth, maxillary palpi, labial palpi, tegulae, subtegular ridge, apical portions of fore and middle coxae, basal half of hind tibia except basal end, posterior margins of tergites whitish yellow; fore and middle legs except coxae, trochanters and apical parts of tarsi red brown; pterostigma and veins yellow brown. Sternites 1–3 darkish brown, 4–6 gray brown.

Figures

Figs 42–44. Campodorus truncatus Sheng, Sun & Li sp. nov., holotype, ♀ (GSFGPM). 42. Habitus, lateral view. 43. Head, anterior view. 44. Head, lateral view.

Figs 45–51. Campodorus truncatus Sheng, Sun & Li sp. nov., holotype, ♀ (GSFGPM). 45. Head, dorsal view. 46. Mesoscutum and scutellum. 47. Mesosoma, lateral view. 48. Propodeum. 49. Tergite 1, dorsal view. 50. Tergites 2–3, dorsal view. 51. Apical portion of metasoma, lateral view.