Pampsilota zebra Liston & Koch, 2017

Liston, Andrew D., Goergen, Georg & Koch, Frank, 2017, Revisions of the Afrotropical genera of Argidae and species of Pampsilota Konow, 1899 (Hymenoptera, Tenthredinoidea), Deutsche Entomologische Zeitschrift 64 (1), pp. 1-25 : 14-15

Pampsilota zebra Liston & Koch sp. n.

Female.

Figures 31-34 , 68-69

Head black with blue metallic lustre. Thorax black with metallic lustre; pronotum yellow with anterior margin and medially black. Legs black with blue metallic lustre; pro- and mesotibia entirely yellow, metatibia yellow with moderately broad blackish apex, probasitarsomere sometimes with yellow base. Wings including intercostal area subhyaline; substigmal spot strongly infuscate but small; stigma, costa, subcosta and rest of venation black. Abdomen yellow-orange; terga 1-6 broadly black with blue metallic lustre; terga 7-9 entirely black, sternum 5 with broad black posterior margin, sterna 6/7 entirely black; ovipositor sheath with black valvifers 2.

Head very slightly enlarged behind eyes. Antenna 1.4 × as long as maximum head width; flagellum enlarged towards apex, quadrangular in cross section, interior surface with sharply compressed longitudinal carina, other longitudinal carinae conspicuously more weakly compressed. Eyes slightly converging towards clypeus. Anterior margin of the clypeus broadly, shallowly, triangularly emarginate; supraclypeal area nearly evenly rising up to base of interantennal carinae, interantennal carinae obtusely ridged, converging below, extending to about level of ventral margin of torulus. Frons, supraclypeal area and clypeus rugosely sculptured, dull, vertex densely punctate, dull, postocellar area and gena densely micropunctate, shiny; pubescence whitish. Mesoscutum moderately densely micropunctate, shiny; pubescence similar to that on head. Abdomen smooth and shiny. Valvulae 3: Figs 31 , 32 . Lancet with about 16 serrulae: Figs 33 , 34 .

Length: 9.5 mm.

Male.

Figures 35 , 70-71 .

General coloration similar to that of female. Metatibia entirely yellow, sometimes interior surface of apex slightly blackish, basal tarsomeres of fore and mid legs extensively yellow. Sterna 5-9 black with blue metallic lustre, sternum 9 broadly yellow apically.

Antenna 1.8 × as long as maximum head width; flagellum slightly enlarged medially, scarcely flattened apically, approximately oval in cross section, interior surface with sharply compressed longitudinal carina, outer carina conspicuously more weakly compressed, other carinae not developed. Other characters as for female. Penis valve: Fig. 35 .

Length: 7.2-7.8 mm.

Type material.

Holotype: ♀. Labels: "Tanzania CE, SE Nbuyuni Baobab vall[ey]. [ca. 7.54°S 36.62°E], NE Irginga [Iringa] 9.III.2002, M. Snižek”; "Holotype, Pampsilota zebra n. sp. ♀, det.: F. Koch, 2016" [red] ( OLML). Paratypes: same data as holotype (5♂♂, 9♀♀) (MFN, OLML, SDEI, USNM).

Etymology.

The new species name, a noun in apposition, refers to the well-known and widely distributed African ungulate, so named in several European languages.

Distribution.

Tanzania. The only known locality lies on the edge of the Udzungwa Mountains National Park (Fig. 37 ).

Diagnosis.

Pampsilota zebra resembles Pampsilota africanus in having pincer-shaped valvulae 3 (compact or diverging in all other species), metatibia distally nearly circular in cross section, and in the main colour characters (thorax black except for pronotum and sometimes tegulae, legs partly pale, and abdomen at least ventrally partly pale). Pampsilota zebra differs from Pampsilota africanus especially in its black costa and subcosta (in the latter costa and anterior of subcosta bright yellow). The tegulae of Pampsilota zebra are always black, whereas in Pampsilota africanus they are sometimes bicoloured. Furthermore, the hind tibia of Pampsilota zebra is in contrast to Pampsilota africanus broadly ringed apically with blackish. The serrulae of these species are very differently shaped (Figs 12 , 34 ), but their penis valves are quite similar (Figs 13 , 35 ).

Remarks.

Intraspecific variability is apparent in the coloration of the dorsum of the abdomen, where the black markings are medially more or less extensive, and the more or less extensively yellow coloured pro- and mesotarsi.

Figures

Figure 37. Distribution map for Pampsilota leleupi, Pampsilota luederitzensis, Pampsilota nigeriae, Pampsilota tsavoensis, and Pampsilota zebra.

Figures 31 - 35. Pampsilota zebra: 31. Valvulae 3 (lateral aspect); 32. Valvulae 3 (dorsal aspect); 33. Lancet; 34. Serrulae 9 - 11; 35. Penis valve (left, lateral aspect).

Figures 66 - 71. Pampsilota tsavoensis ♀ (HT), dorsal / lateral. 68 - 71. Pampsilota zebra. 68 - 69 ♀ (HT), dorsal / lateral; 70 - 71. ♂ (PT), dorsal / lateral. Scale bars = 1 mm.

Figures 9 - 13. Pampsilota africanus: 9. Valvulae 3 (lateral aspect); 10. Valvulae 3 (dorsal aspect); 11. Lancet; 12. Serrulae 10 - 11; 13. Penis valve (left, lateral aspect).