Campoletis deserticola Sheng & Zhou, 2020

Wei, Ya-Wei, Zhou, Yong-Bin, Zou, Qing-Chi & Sheng, Mao-Ling, 2020, A new species of Campoletis Foerster (Hymenoptera, Ichneumonidae) with a key to species known from China, Japan and South Korea, ZooKeys 1004, pp. 99-108 : 99

Campoletis deserticola Sheng & Zhou sp. nov. Figures 2-14 , 15

Material examined.

Holotype: China • ♀; Liaoning, Zhangwu, Aershan; 273 m; 18.VI.2020; Ya-Wei Wei leg. Paratypes: China • 2♀♀23♂♂; Beijing, Yanqing, Songshan National Natural Reserve; 672 m; 17-26.IX.2011; IT by Shi-Xiang Zong leg. • 1♀1♂; Liaoning, Zhangwu, Aershan; 273 m; 18.VI.2020; Ya-Wei Wei leg.

Diagnosis.

Campoletis deserticola Sheng & Zhou, sp. nov. can be distinguished from all other species of Campoletis by combination of the following:

Body granulate to finely granulate, without evident punctures. Face (Fig. 3 ) and main portion of clypeus rough, with indistinct, irregular fine punctures. Malar space 0.8-0.9 × as long as basal width of mandible. Mesoscutum and scutellum (Fig. 6 ) with even leathery culpture. Anterolateral portion of postscutellum with deep circular depressions (Fig. 11 ). Propodeum (Fig. 11 ) with dense gray setae; area externa roughly shagreened; area petiolaris with dense transverse wrinkles. Head except mandible, mesosoma and all coxae entirely black. All femora brownish red. Tergites 2-4 almost entirely reddish brown.

Description.

Female. Body length 6.4-7.2 mm. Fore wing length 4.7-5.0 mm. Ovipositor sheath length 0.9-1.1 mm.

Head. Inner margins of eyes slightly convergent ventrally. Face (Fig. 3 ) 1.4 × as wide as long from dorsal margin to clypeal fovea, evenly slightly convex, rough, with indistinct irregular fine punctures; dorsal margin with a V-shaped concavity medially. Clypeal suture entirely absent. Basal portion of clypeus (Figs 3 , 4 ) with texture as that of face; apical margin smooth, shiny, with strong median tooth. Mandible (Fig. 4 ) distinctly narrowed to ends of teeth, with sparse brownish yellow setae; upper tooth as long as lower tooth. Malar area, gena (Fig. 5 ) and vertex shagreened. Malar space 0.8-0.9 × as long as basal width of mandible. Gena distinctly convergent posteriorly, in dorsal view 0.5 × as long as width of eye. Postocellar line 1.2 × as long as ocular-ocellar line. Frons with texture as that of face. Antenna with 28-30 flagellomeres. Ratios of lengths from first to fifth flagellomeres 1.5:1.2:1.1:1.1:1.0. Occipital carina complete, reaching hypostomal carina above base of mandible.

Mesosoma. Lateral concavity of pronotum (Figs 5 , 7 ) wide, shallow, lower half with distinct oblique wrinkles; dorsoposterior portion shagreened. Epomia present. Mesoscutum (Fig. 6 ) with leathery culpture, evenly convex; notaulus absent. Scutoscutellar groove almost smooth, shiny. Scutellum slightly convex, with fine leathery culpture. Postscutellum shagreened, anterolateral portion with deep circular depressions (Fig. 11 ). Mesopleuron (Fig. 7 ) with leathery culpture; in front of speculum slightly concave with longitudinal wrinkles; upper anterior portion with oblique longitudinal wrinkles. Upper end of epicnemial carina reaching anterior margin of mesopleuron, at 0.5 height of posterior margin of pronotum; ventral part (Fig. 8 ) complete, strongly elevated. Metapleuron slightly convex, with texture as lower portion of mesopleuron; lower-posterior portion with short oblique wrinkles. Ratio of length of hind tarsomeres from first to fifth approximately 5.6:2.4:1.6:1.0:1.3. Claw with two or three teeth. Wings slightly brownish, hyaline. Fore wing with vein 1cu-a distal to M&RS by approximately 0.2 × length of 1cu-a; 1cu-a distinctly inclivous. Areolet quadrilateral, with distinct petiole, receiving vein 2m-cu at approximately 0.4 distance from vein 2rs-m to 3rs-m; 2rs-m almost as long as 3rs-m. Postnervulus strongly inclivous, intercepted at lower 0.3. Hind wing vein 1-cu 1.5 × as long as cu-a. Propodeum (Fig. 11 ) with dense gray setae; area basalis reversed trapezoid, shiny, almost smooth; area externa roughly shagreened; area superomedia rough with indistinct fine punctures; area dentipara with indistinct oblique wrinkles; area petiolaris with dense, distinct transverse wrinkles. Area superomedia and area petiolaris confluent, junction between them discernible. Propodeal spiracle small, almost circular, connecting pleural carina by ridge.

Metasoma. Metasomal tergites weakly shagreened. First tergite (Fig. 12 ) 2.2-2.3 × as long as its apical width, anterior portion and posterior margin smooth, shiny; spiracle small, circular, located at apical 0.33. Second tergite (Fig. 13 ) trapezoidal, 1.4 × as long as its anterior width, 0.9 × as long as its posterior width; longer than third tergite. Third tergite approximately 0.7 × as long as posterior width, sides parallel. Ovipositor sheath 0.55-0.65 × as long as hind tibia, 0.85-0.95 × as long as first tergite, 1.1-1.2 × as long as second tergite. Ovipositor (Fig. 14 ) slightly curved upwards.

Coloration (Fig. 2 ). Black, except for following: mandible except teeth yellow brown. Apical three segments of maxillary palpi, tegulae and lateral margins of tergite 7 brown. Femora, sides of fore tibia (Fig. 9 ), hind tibia (Fig. 10 ) except base, main portion of tergite 2, tergites 3 and 4 and anterior portion of tergite 5 brownish red. Inner side of fore tibia and fore tarsus yellowish brown. Mid tarsus brown. Base of hind tibia and tarsus brownish black. Pterostigma and veins brown.

Male (Fig. 15 ). Body length 6.0-7.2 mm. Fore wing length 4.3-5.0 mm. Antenna with 31-34 flagellomeres. Similar to female, except following: fifth tergite almost entirely brownish red; posterior median portion of sixth tergite brown.

Distribution.

China: Beijing, Liaoning.

Etymology.

The specific name is derived from the habitat of the holotype locality.

Remarks.

The new species is similar to Campoletis gastrolinae Kusigemati, 1972 and C. cognata (Tschek, 1871) in having the head and mesosoma black; tergites 2-3 red to reddish brown; hind femur completely or predominantly red; apical margin of clypeus with strong median tooth; second tergite approximately as long as ( C. cognata at most 1.2 ×) posterior width. It can be distinguished from C. gastrolinae by the following combination of characters: frons without median longitudinal carina; notaulus absent; areolet receiving vein 2m-cu distinctly basal of its middle; Area superomedia and area petiolaris confluent; ovipositor sheath 1.1-1.2 × as long as second tergite; coxae entirely black; tergites 6-8 mainly black. C. gastrolinae has the frons with median longitudinal carina; notaulus extending to the middle of the mesoscutum; the areolet receiving vein 2m-cu is placed at its middle; Area superomedia and area petiolaris separated by distinct carina; the ovipositor sheath is 0.8 × as long as the second tergite; fore and mid coxae yellow; tergites 6-8 partly yellowish brown.

Figures

Figure 15. Campoletis deserticola Sheng & Zhou, sp. nov. Paratype, male. Habitus, lateral view.

Figures 2 - 14. Campoletis deserticola Sheng & Zhou, sp. nov. Holotype, female 2 habitus, lateral view 3 head, anterior view 4 clypeus and mandibles 5 head and pronotum, lateral view 6 mesoscutum and scutellum 7 mesosoma, lateral view 8 mesosoma, ventrolateral view 9 fore leg, lateral view 10 hind femur and tibia, lateral view 11 propodeum 12 first tergite, lateral view 13 postpetiole and tergites 2 - 4, dorsal view 14 ovipositor and ovipositor sheath, lateral view.