Mesa dioica, Boni, 2013

Boni, M., 2013, Afrotropical taxa of the genus Mesa SAUSSURE 1892 (Hymenoptera, Tiphiidae, Myzininae), Linzer biologische Beiträge 45 (2), pp. 1657-1744 : 1693

Mesa dioica nov.sp.

H o l o t y p u s - Yemen = / Yemen Al Kowd 15-28.II.1993 A. Van Harten mal. Trap/ ZMA

P a r a t y p u s - Somalia = /Brit. Somaliland Hargeisa V.1949 KM. Guichard 13.H.1951.406/ BMNH.

P a r a t y p e s - Yemen = (1) / Yemen Al Kowd 15-28.II.1993 A. Van Harten mal. Trap /, ZMA; (1) / Al Kowd IV.1993 A. Van Harten Mal. Trap / ZMA .

Female: figs 177-179 .

Black. Brown: antennae, legs and metasoma but ferruginous last two metameri and apex of 4 th one. Wings very pale yellowish.

cOc worn out along vertex. Sub elliptic furrow on P disk; posterior area with irregular and ill defined p; postero lateral areas with very fine wrinkles. Epipygium mostly p, with a narrow wrinkled subapical stripe (as wide as ¼ total length of epipygium). Gradulus present on 3 rd tergum, absent on 4 th one. mR (at x40) on Es 1, Es 2, among p on propodeal disk, metameri but last one and 1 st tergum.

Male (Holotype): figs 180-187. Body size: 9 mm.

Black. Pale yellow: the whole clypeus apart the semitransparent ventral border, subapical Tsa, spot on lower genae near base of mandible, upper half of mandibles, spot on anteroventral tooth and subapical stripe on N 1 disk, half tegula, perimetral LaSt 2, ventral coxae, most of legs, apical stripe with waving fore edge on 1 st to 6 th terga and 2 nd to6th sterna. Flagellum bicolor, brown upperside, orange ventral side. Wings hyaline.

Mid flagellomeri thick with a ratio L/LA more than 2.2. Fore border of N 1 disk distinctly angled but without prominent lamina, its anteroventral corner with acute tooth. Em 3 feebly corrugated throughout. No bipunctate terga. Epipygium with longitudinal swelling and convex profile in lateral aspect, with a very shallow, almost undetectable, median notch.

Paratype from Somaliland differs in having two spots instead of subapical stripe on sterna, a bit lesser thick flagellomeri, and a bit deeper median notch of epipygium.

Derivatio nominis. From the Greek word įȚȠȚțȑȦ meaning to live apart, in two houses.

Figures

Figs 177-179: Mesa dioica: (177) habitus; (178) basal hindtarsomerus; (179) epipygium. Figs 180-184: Mesa dioica: (180) head & pronotum, dorsal aspect; (181) head, frontal aspect; (182) pronotum, lateral aspect; (183) epipygium, dorsal aspect; (184) last metamerus, lateral aspect; (177: scale bar: 2.5 mm; 178, 179, 180, 181, 182: scale bar: 1 mm; 183-184: scale bar: 0.5 mm).