Priopoda nigrifacialis Sheng & Sun

Sheng, Mao-Ling & Sun, Shu-Ping, 2012, The species of Priopoda Holmgren (Hymenoptera: Ichneumonidae) from China with a key to species known in Oriental and Eastern Palaearctic Regions, Zootaxa 3222, pp. 46-60 : 54-56

Priopoda nigrifacialis Sheng & Sun , sp.n. ( Figures 19–23 , 29 )

Etymology. The specific name is derived from the face being black.

Material examined. Holotype: female, CHINA: Guanshan, 450 m, 27 May 2008, leg. Jin-Hong Pang ( GSFPM).

Diagnosis. Face black. Terga 2 to 4 reddish brown. Forewing vein 3rs-m as long as 2rs-m. Areolet receiving vein 2m-cu slightly distal of its middle. Area superomedia complete, approximately 1.5 times as long as widest width, connecting costula at anterior 0.2. Costula complete and strong.

Description. Female. Body length approximately 7.5 mm. Fore wing length approximately 6.8 mm.

Head. Face, mandible and gena with fine coriaceous texture. Face ( Fig. 20 ) approximately 1.8 times as wide as long, very weakly convex, with dense, distinct and fine punctures; punctures on lateral portion almost contacting each other transversely. Upper margin with a small median tubercle. Median section of clypeal suture distinct. Clypeus approximately 2.8 times as wide as long, evenly convex toward apex, smooth, with sparse and correspondingly larger punctures than that of face; apical margin blunt, with long brown hairs. Mandible with sparse fine punctures; subbasal portion of upper margin distinctly curved inward; lower tooth approximately 1.6 times as long as upper tooth. Cheek slightly coarse, with indistinct punctures. Malar space approximately 0.4 times as long as basal width of mandible. Gena with distinct, even and fine punctures, distance between punctures 0.2 to 0.8 times diameter of puncture; in lateral view approximately 1.2 times as long as width of eye. Vertex ( Fig. 21 ) with texture as that of gena, but punctures relatively sparser, distance between punctures 0.5 to 2.0 times diameter of puncture; interocellar area convex, with fine punctures. Postocellar line about 0.4 times as long as ocular-ocellar line. Frons flat, with dense and even punctures, distance between punctures 0.2 to 0.5 times diameter of puncture. Apical portion of flagella broken, remainder with 35 flagellomeres. Ratio of length from first to fifth flagellomeres: 6.3:4.9:4.2:4.0:3.9. Occipital carina complete.

22 Mesosoma. Anterior portion of pronotum with longitudinal fine lines. Laterally concave with short indistinct transverse wrinkles. Upper-posterior portion slightly coarse, with fine and indistinct punctures. Epomia weak, short. Mesoscutum with even and dense punctures, distance between punctures 0.2 to 1.0 times diameter of puncture; lateral margin from tegula to scutellum strongly marginate. Notaulus indistinct. Scutellum evenly convex, with texture as that of vertex, basal 0.3 with lateral carina. Postscutellum almost roundly (slightly transversely) convex, with indistinct fine punctures. Mesopleuron with distinct punctures, sparser on the portion before speculum. Anterior-lower portion of speculum with short oblique wrinkles. Speculum comparatively large. Epicnemial carina strong, upper end almost reaching to half distance to subalar prominence, distant from front margin of mesopleuron. Mesopleural fovea as a fine transverse groove, approximately 3 times as long as width of mesepimeron. Metapleuron evenly convex, with comparatively denser punctures than that of mesopleuron. Submetapleural carina complete, anterior portion evenly convex. Wings brownish hyaline. Fore wing vein 1cu-a almost opposite 1/ M. Areolet quadrate, 3rs-m as long as 2rs-m, receiving vein 2m-cu slightly distal of its middle. Vein 2-Cu longer than 2cu-a. Hind wing vein 1/cu about 2 times as long as cu-a. Legs comparatively slender. Ratio of length of hind tarsomeres from first to fifth: 10.0:4.4:3.3:2.0:2.2. Claws densely pectinate. Propodeum ( Fig. 22 ) with fine alutaceous texture and very sparse, indistinct and fine punctures. Area superomedia complete, convergent backwardly, approximately 1.5 times as long as widest width. Costula complete, connecting area superomedia at anterior 0.2. Anterior sections of median longitudinal and lateral carinae disappeared. Anterior and posterior transverse carinae and pleural carinae complete. Area spiracularis combined with area lateralis. Spiracle circular, slightly convex, distance to lateral longitudinal carina approximately as long as to pleural carina.

Metasoma. Apical portion of metasoma weakly compressed. First tergum approximately 2.0 times as long as apical width, strongly narrowed towards base. Postpetiole with median longitudinal concavity, indistinctly punctate. Median dorsal carina absent. Dorsolateral carinae complete. Spiracle small, circular, evidently convex, approximately located at middle of first tergum. Second tergum ( Fig. 23 ) 0.7 times as long as apical width, with fine granulous texture, posterior portion with fine punctures. Remaining terga somewhat smooth. Ovipositor sheath 0.7 times as long as apical depth of metasoma.

Color ( Fig. 19 ). Black, except the following. Mandibles except teeth, maxillary palpi, labial palpi, spots on cheeks, tegulae and upper-lateral corners of pronotum yellow. Ventral profile of antenna brown, dorsal blackish brown. Apical margin of clypeus, front and middle legs except fifth tarsomeres, ventral profile of hind tibia, hind tarsomeres except dorsal profile of fifth tarsomere unevenly blackish brown. Stigma and veins filemot. Basal portion of hind tibia brownish black. Hind coxae and trochanters (dorsal profiles almost black), apical margin of first tergum, terga 2 to 4 reddish brown.

Remarks. Similar to P. dentata Sheng & Sun and P. dorsopuncta Sheng & Sun , but can be distinguished from them in have flagella without white ring, face entirely black, fore wing vein 3rs-m as long as 2rs-m. Priopoda dentate and P. dorsopuncta : flagella with white ring, face yellow or yellowish brown, forewing vein 3rs-m longer than 2rs-m.

Figures

FIGURE 29. Distribution Map. A. Anfu, Jiangxi. B. Baiyunshan Natural Reserve, Henan. G. Guanshan Natural Reserve, Yifeng, Jiangxi. H. Huoditang, Ankang, Shannxi. J. Ji’an, Jiangxi. Js. Jinsa, Chishui, Guizhou. M. Mentougou, Beijing. Q. Quannan, Jiangxi. W. Wuyishan, Yianshan, Jiangxi.

FIGURES 19 – 23. Priopoda nigrifacialis Sheng & Sun, sp. n. 19. Body, lateral view. 20. Face. 21. Vertex. 22. Propodeum. 23. Second tergum.