Unicarinata ventrialis Sheng, Li & Sun, 2022

Li, Tao, Sun, Shu-Ping & Sheng, Mao-Ling, 2022, A new genus and species of Ctenopelmatinae (Hymenoptera, Ichneumonidae) from China, Journal of Hymenoptera Research 92, pp. 199-210 : 199

publication ID	https://dx.doi.org/10.3897/jhr.92.84969
publication LSID	lsid:zoobank.org:pub:1AD18B71-B687-4500-B896-DCD27C57A4C7
persistent identifier	https://treatment.plazi.org/id/E7315381-2D50-4762-892C-19C04EABBF21
taxon LSID	lsid:zoobank.org:act:E7315381-2D50-4762-892C-19C04EABBF21
treatment provided by	Journal of Hymenoptera Research by Pensoft
scientific name	Unicarinata ventrialis Sheng, Li & Sun
status	sp. nov.

Treatment

Unicarinata ventrialis Sheng, Li & Sun sp. nov.

Figs 1-2 View Figure 1–2 , 3-11 View Figure 3–11 , 12-15 View Figure 12–15 , 16-19 View Figure 16–19 , 20-23 View Figure 20–23

Material examined.

Holotype, ♀ (CBDPC), China: Ernianping, National Natural Reserves of Mt Laojun , Sichuan Province, 28°42'N, 104°01'E, 1500 m, 25. VIII. 2019, leg. Tao Li (IT) GoogleMaps . Paratypes, 1♂ (CBDPC), China: Lingjue Temple, National Natural Reserves of Mt Emei , Sichuan Province, 29°33'N, 103°19'E, 2390 m, 22. VIII. 2019, leg. Peng-Suo Luo (IT) GoogleMaps ; 1♀ 2♂ (CBDPC), China: Lingjue Temple, National Natural Reserves of Mt Emei , Sichuan Province, 29°32'N, 103°19'E, 2310 m, 10. VIII. 2020, leg. Peng-Suo Luo (IT) GoogleMaps ; 1♂ (CBDPC), China: Lingjue Temple, National Natural Reserves of Mt Emei , Sichuan Province, 29°33'N, 103°19'E, 2390 m, 30. VIII. 2020, leg. Peng-Suo Luo (IT) GoogleMaps ; 1♀ (CBDPC), China: National Natural Reserves of Mt Leigong , Guizhou Province, 26°22'N, 108°12'E, 1760 m, 18. V. 2019, leg. Wan-Xin Pan (IT) GoogleMaps ; 1♂ (CBDPC), China: Yapanlin, National Natural Reserves of Mt Fanjing , Guizhou Province, 27°53'N, 108°38'E, 1250 m, 13. IX. 2019, leg. Mao-Fei Tian (IT) GoogleMaps ; 1♀ (CBDPC), China: National Forest Park of Mt Wawu, Giant Panda National Park , Sichuan Province, 29°40'N, 102°59'E, 1180 m, 15. VI. 2020 GoogleMaps , leg. Gui-Ru Kang (IT) ; 1♀ 2♂ (CBDPC), China: National Forest Park of Mt Wawu, Giant Panda National Park , Sichuan Province, 29°40'N, 102°59'E, 1180 m, 13. IX. 2020 GoogleMaps , leg. Gui-Ru Kang (IT) ; 1♂ (CBDPC), same data as holotype, except 1. VI. 2021 GoogleMaps ; 1♂ (CBDPC), same data as holotype, except 21. VI. 2021 GoogleMaps ; 2♀ 3♂ (CBDPC), same data as holotype except 17. IX. 2021 GoogleMaps ; 2♀ 10♂ (CBDPC), China: Shengtangshan, National Natural Reserves of Mt Dayao, Guangxi Zhuang Autonomous Region , 23°57'N, 110°06'E, 1520 m, 15. X. 2021, leg. Tao Li (IT) GoogleMaps ; 1♀ 4♂ (CBDPC), China: Shengtangshan, National Natural Reserves of Mt Dayao, Guangxi Zhuang Autonomous Region , 23°57'N, 110°06'E, 1520 m, 21. X. 2021, leg. Tao Li (IT) GoogleMaps ; 1♀ 6♂ (CBDPC), China: Shengtangshan, National Natural Reserves of Mt Dayao, Guangxi Zhuang Autonomous Region , 23°57'N, 110°06'E, 1520 m, 15. X. 2021, leg. Tao Li GoogleMaps (IT).

Description.

Female. Body (Fig. 1 View Figure 1–2 ) length 6.4 to 7.8 mm. Fore wing length 5.7 to 6.8 mm. Ovipositor sheath length 0.4 to 0.5 mm.

Head. Inner margins of eyes (Fig. 3 View Figure 3–11 ) slightly convergent ventrally. Face (Fig. 3 View Figure 3–11 ) approximately 1.2 × as wide as long, shining with fine granular microscupture and dense yellowish brown setae, median portion evenly longitudinal convex with rough punctures. Clypeus (Fig. 3 View Figure 3–11 ) 2.5 × as wide as long, convex from basal to apical portions; apical margin arced and truncate. Mandible (Fig. 3 View Figure 3–11 ) large and long, with dense setae medially; lower tooth distinctly longer than upper tooth. Malar space shiny, about 0.4 × as long as basal width of mandible. Maxillary palp (Fig. 4 View Figure 3–11 ) with five segments, extending to mid coxa. Gena (Fig. 4 View Figure 3–11 ) evenly convergent backward, shiny, with dense yellowish brown setae. Vertex (Fig. 5 View Figure 3–11 ) with the same texture as gena; posteromedian portion distinctly oblique. Postocellar line approximately 0.8 × as long as ocular-ocellar line. Frons almost flat, slightly concave above antennal socket. Antenna with 42 to 46 flagellomeres; ratio of length from first to fifth flagellomeres (Fig. 6 View Figure 3–11 ): 1.8:1.4:1.2:1.1:1.0. Occipital carina complete, genal carina joining hypostomal carina above base of mandible.

Mesosoma. Pronotum (Fig. 4 View Figure 3–11 ) shiny, dorsal half of concavity with fine oblique wrinkles; dorsal margin with dense yellowish setae. Epomia absent. Mesoscutum (Fig. 7 View Figure 3–11 ) convex, shiny, with dense yellowish setae; median portion slightly longitudinally concave, with coarse texture. Notaulus distinct on anterior portion of mesoscutum. Scuto-scutellar groove deep, shiny, with fine longitudinal wrinkles. Scutellum (Fig. 7 View Figure 3–11 ) distinctly convex, shiny, with sparse setae; lateral carina distinct, extending to median portion. Posteromedian part distinctly convex, with finely granulate; anterior portion concave. Mesopleuron (Fig. 4 View Figure 3–11 ) almost flat, shiny, lower half with evenly dense yellowish-brown setae; upper portion under subtegular ridge with sparse setae. Speculum relatively large, slightly convex, shiny. Episternal scrobe as shallow transverse groove. Dorsal end of epicnemial carina almost reaching front edge of mesopleuron, about 0.8 of distance to subtegular ridge. Mesosternum (Figs 4 View Figure 3–11 , 18 View Figure 16–19 ) relatively short and evenly convex. Metapleuron (Fig. 4 View Figure 3–11 ) slight convex, dorsal and median parts shiny, lower part finely granulate; ventro-posterior corner with oblique wrinkles. Juxtacoxal carina complete. Legs slender; claws simple. Fore tibia (Fig. 9 View Figure 3–11 ) with distinct apical tooth; anterior and apical part with spines. Hind coxa (Fig. 1 View Figure 1–2 ) conical, dorsally longitudinally concave with fine granular texture; inner spur (Fig. 10 View Figure 3–11 ) 0.6 × as long as first tarsomere. Ratio of length from first to fifth hind tarsomeres (Fig. 10 View Figure 3–11 ): 4.2:2.2:1.7:1.0: 1.0. Wings (Fig. 11 View Figure 3–11 ) slightly infuscate. Fore wing with vein 1cu-a opposite M&RS. Areolet absent. Vein 3rs-m absent. Vein 2rs-m basal to vein 2m-cu by 0.5 × length of vein 2rs-m. Vein CU slightly shorter than 2cu-a. Hind vein M+CU strongly curved. Vein 1-cu opposite cu-a. Vein 2-CU absent. Propodeum (Fig. 8 View Figure 3–11 ) slightly convex, shiny, with fine granular texture, with one strong transverse carina at level of posterior edge of spiracle; basal median part with one arched transverse carina or irregular wrinkles (Figs 19 View Figure 16–19 , 21 View Figure 20–23 ); lateromedian longitudinal carinae present anteriorly, weak, strongly diverging posteriorly; lateral longitudinal carina interrupted under transverse carina; pleural carina complete; propodeal spiracle reniform, 3.1 × as long as width.

Metasoma (Fig. 12 View Figure 12–15 ). Tergite 1 (Fig. 13 View Figure 12–15 ) 7.3 × as long as anterior width, 3.5 × as long as posterior width; margins parallel, evenly widened posteriorly; anterior half shiny, posterior half with fine granular texture; posterior part with dense yellowish setae; latero-median carina absent, dorso-lateral carina present posterior to spiracle, ventro-lateral carina complete; spiracle small, circular, located slightly anterior to middle; glymma absent; anterior sclerotized section (Fig. 14 View Figure 12–15 ) strongly convex; tergite and sternite fused; sternite 1 extending to posterior 0.3 of tergite 1. Tergite 2 (Fig. 15 View Figure 12–15 ) trapezoidal, 1.3 × as long as anterior width, 0.8 × as long as posterior width, with evenly spaced fine yellowish-brown setae. Tergite 3 (Fig. 15 View Figure 12–15 ) almost rectangular, 0.7 × as long as anterior width, with the same microsculpture as tergite 2. Tergites 4-8 shiny, with evenly spaced fine yellowish-brown setae; posterior half of tergite 4-8 compressed. Ovipositor sheath (Fig. 12 View Figure 12–15 ) almost extending to apex of metasoma. Ovipositor slender and straight.

Coloration. Body (Fig. 1 View Figure 1–2 ) yellowish brown to brown, mesosoma (Fig. 4 View Figure 3–11 ) with blackish brown spots or reddish brown (Fig. 18 View Figure 16–19 ), propodeum reddish brown (Fig. 19 View Figure 16–19 ) or black-brown (Fig. 21 View Figure 20–23 ), except for following: face, clypeus, mandible (teeth brown), gena, maxillary palpi, labial palpi, fore and mid coxae, trochanters, third to fifth hind tarsomeres, yellowish white. Median part of frons, occiput, temple and vertex, black-brown with some reddish. Median and upper parts of pronotum, mesoscutum, mesopleuron, except subtegular ridge and speculum, upper division of metapleuron, lower half of metapleuron, area basalis, area dentipara, dorsum of hind coxa except median spot, subapical part of tergite 1, and lateral part of tergite 2, dark brown to black-brown. Hind femur and tibia brown to reddish brown. Proximal and apical parts of flagellum, pterostigma and veins, brown to brownish black.

Male. Body (Fig. 2 View Figure 1–2 ) length 5.8 to 6.7 mm. Fore wing length 5.4 to 6.0 mm. Antenna with 41 to 45 flagellomeres. Propodeum (Fig. 17 View Figure 16–19 ) with fine oblique wrinkles at anteriorly, sub-laterally, or with transverse carina (Fig. 23 View Figure 20–23 ), posterior half with fine granular texture; sub-median section of transverse carina interrupted; lateromedian longitudinal carinae absent; apical of lateral longitudinal carina vestigial. Body brown, mesosoma (Fig. 16 View Figure 16–19 ) with blackish brown spots, except for following: posterior longitudinal spots dark reddish. Median and lower half of mesopleuron, metapleuron except lower-posterior corner, yellowish brown to brown; mesoscutum (Fig. 22 View Figure 20–23 ) reddish brown except sub-median irregular spots with dark reddish. Other characteristics as in female.

Distribution.

China (Guangxi, Guizhou, Sichuan).

Etymology.

The specific name is derived from the short and evenly convex mesosternum.