Notosemus albimaculatus Sheng & Sun

Sheng, Mao-Ling, Sun, Shu-Ping, Zhang, Ying & Liang, Yan-Ping, 2016, Three new species of the genus Notosemus Förster, 1869 (Hymenoptera, Ichneumonidae, Ichneumoninae) from China, with a key to the world species, European Journal of Taxonomy 209, pp. 1-19 : 3-6

Notosemus albimaculatus Sheng & Sun , sp. nov.

urn:lsid:zoobank.org:act:11838933-E2C5-4524-8BA1-F187CEEE9DEE

Figs 1–10

Diagnosis

Antenna with 28 flagellomeres, beyond middle slightly widened; apical portion cylindric. Upper tooth of mandible longer than lower tooth. Subocular sulcus present and distinct. Second tergite with dense, fine punctures, approximately 2.1× as long as maximum width. Face yellowish white, with a small median brown spot. Propodeal spiracle oval, 1.5× as long as wide. Metapleuron mainly dark brown. Hind tarsus brown.

Etymology

The specific name is derived from the large white spots on the head and mesosoma.

Material examined

Holotype

CHINA: ♀, Bomi, 2750 m, Xizang Autonomous Region, 10 Jul. 2013, leg. Tao Li.

Paratype

CHINA: 1 ♀, same data as holotype.

Description

Female

MEASUREMENTS. Body length 7.5 to 8.5 mm. Fore wing length 5.5 to 6.0 mm.

HEAD. Face ( Fig. 2 ）approximately 1.45× as wide as long, with sparse uneven punctures, distance between punctures 1.0–4.0× diameter of puncture; median portion slightly convex; upper margin with even median concavity. Clypeal suture vestigial. Clypeus approximately 2.2× as wide as long, with sculpture as that of face; apical margin with distinct tubercles and fine setae, evenly convex. Mandible with distinct punctures; base deeply concave; upper tooth longer than lower tooth. Subocular sulcus distinct. Malar space 0.7 to 0.8× as long as basal width of mandible. Gena ( Fig. 3 ) evenly longitudinally convex, shiny, with indistinct fine punctures. Vertex ( Fig. 4 ) with distinct irregular fine punctures. Interocellar area with fine longitudinal wrinkles. Postocellar line approximately 0.6× as long as ocularocellar line; ocular-ocellar line 1.6× as long as maximum diameter of posterior ocellus. Frons almost flat, with dense punctures, median portion with indistinct oblique longitudinal wrinkles; lower portion concave. Antenna with 28 flagellomeres, beyond median portion slightly widened; apical portion regular, cylindric. Ratios of lengths from first to fifth flagellomeres: 9.5:7.4:6.7:6.3:5.7. Occipital carina complete, lower end reaching base of mandible.

MESOSOMA. Pronotum smooth, shiny; lateromedian portion with short transverse wrinkles; upper lateral portion slightly convex, with indistinct fine punctures. Epomia distinct. Mesoscutum ( Fig. 5 ) convex; median portion with dense, fine punctures, anterior and lateral portions with weak indistinct punctures. Anterior portion of notaulus distinct, reaching to line between anterior margins of tegulae. Scutoscutellar groove deep, smooth, shiny. Scutellum evenly slanting backward, basal portion with indistinct fine punctures, posterior portion smooth, shiny; lateral carina almost 0.5× length of scutellum. Anterior portion of postscutellum slantingly concave forward; posterior portion transversely convex, with indistinct fine punctures. Median portion of mesopleuron ( Fig. 6 ) with fine, indistinct wrinkles; anterior portion behind epicnemial carina, lower and posterior portions with uneven punctures; upperanterior portion, beneath subalar prominence, with weak, short transverse wrinkles. Speculum large, smooth, shiny. Upper end of epicnemial carina almost reaching subalar prominence. Mesopleural fovea consisting of short, deep horizontal groove. Metapleuron with dense, uneven punctures; juxtacoxal carina complete. Submetapleural carina complete, strong. Wings slightly brownish, hyaline. Fore wing with vein 1cu-a opposite, or almost opposite 1-M. Areolet pentagonal, receiving vein 2m-cu slightly distal of its middle. 2-cu slightly shorter than 2cu-a. Hind wing vein 1-cu about 3.0× as long as cu- a. Ventral profile of hind coxa with dense punctures. Hind femur slightly compressed, inner profile more or less flat. Basal portion of hind tibia slender; apical portion evidently compressed. Ratio of length of hind tarsomeres 1:2:3:4:5 is 20.5:9.8:6.5:3.3:5.4. Claw simple. Propodeum ( Fig. 7 ) with dense transverse wrinkles; basal transverse, lateral longitudinal and pleural carinae complete; basal portion in front of basal transverse carina smooth, shiny. Apical portion of lateral carina of area superomedia absent. Submedian portion of apical transverse carina very faint. Basal portions of area superomedia and area dentipara with weak, short longitudinal wrinkles. Propodeal spiracle elliptical, located at basal 0.1 to 0.2 of propodeum, connected to pleural carina by a carina.

METASOMA. First tergite very slender, 3.1 to 3.6× as long as apical width, almost smooth, shiny; apical portion with weak, fine punctures; spiracle circular, small, evidently convex, located at apical 0.15 of first tergite. Postpetiole convergent posteriorly. Second tergite ( Fig. 8 ) with dense, fine punctures, approximately 2.1× as long as maximum width. Thyridium slightly impressed, approximately 2× wider than distance between them; 1.5× as long as distance to basal margin of second tergite. Third tergite with same sculpture as second tergite; lateral margins parallel, longer than wide; apical margin smooth. Fourth tergite with weak, indistinct punctures; apical half almost smooth, shiny. Tergites 5 and 6 ( Fig. 9 ) with large apical median membranous areas. Dorsal profile of seventh tergite almost entirely membranous. Eighth tergite almost absent. Ovipositor sheath as long as apical depth of metasoma, slightly widened apically. Ovipositor ( Fig. 10 ) slightly curved upwards, upper and lower valves with distinct ridges.

COLOR ( Fig. 1 ). Black, except following: face except small median brown spot, clypeus except black apical margin, maxillary and labial palpi except apical segment brown, malar area, gena and wide spot of vertex, lateral portions of frons, anterior spot of scape, flagellomeres 7 to 10 and dorsal profile of 11, anterior and upper-posterior wide bands of pronotum, tegula, subalar ridge, large median spot of mesopleuron, upper division of metapleuron, large posterolateral spots of propodeum, anterior and middle coxae and trochanters, dorsal spot of hind coxa, hind trochanter predominantly, small apical median spot of first tergite, basal and apical transverse bands of tergites 2 to 4, concavities of tergites 5 to 7 white to yellowish white. Subapical narrow transverse band of tergite 4 and basal transverse band of tergite 5 yellow brown. Submedian triangular spots of mesoscutum, scutellum and postscutellum yellow white. Metapleuron except lower portion blackish brown, leg (except mentioned above and basal and apical portions of hind tibia black brown, median darkish yellow, hind tarsus brown) brown to red brown. Pterostigma yellow brown. Veins brown.

Male

Unknown.

Remarks

This new species is similar to N. polyambonios Kusigemati, 1986 , and can be distinguished from the latter by the following combination of characters: upper hind median portion of head slightly concave; antenna with 28 flagellomeres; propodeal spiracle oval, 1.5× as long as wide. N. polyambonios : upper hind median portion of head strongly concave; antenna with 39 flagellomeres; propodeal spiracle elongate, 2.7× as long as wide.

Figures

Figs 1 – 5. Notosemus albimaculatus Sheng & Sun, sp. nov., holotype, ♀ 1. Habitus, lateral view. 2. Head, anterior view. 3. Head, lateral view. 4. Head, dorsal view. 5. Mesoscutum and scutellum.

Figs 6 – 10. Notosemus albimaculatus Sheng & Sun, sp. nov., holotype. 6. Mesosoma, lateral view. 7. Propodeum. 8. Postpetiole and tergite 2, dorsal view. 9. Apical portion of metasoma, dorsal view. 10. Ovipositor.