Mesa sahariana, Boni, 2013

Boni, M., 2013, Afrotropical taxa of the genus Mesa SAUSSURE 1892 (Hymenoptera, Tiphiidae, Myzininae), Linzer biologische Beiträge 45 (2), pp. 1657-1744 : 1698

Mesa sahariana nov.sp.

H o l o t y p u s - Egypt = /Gebel Elba Egypt 1.33 Dr. H. Priesner/, OLML.

P a r a t y p u s - Lybia = /Tripolitania Tin Alcun (V. Iseien) X.1936 G. Scortecci/ MSNM.

Female: figs 241-242 .

Black. Metasoma is completely ferruginous but brown petiole. Wings hyaline. Calcaria and spines light yellowish. cOc complete on the upper side along vertex. Rounded edge between outer and anterior surfaces of Es 2. ¾ epipygium wrinkled, with dense apical micro p. Gradulus present on 3 rd tergum, absent in 4 th one. Scopa: fig. 242 .

Male: (Holotype): figs 243-248. Body size: 14 mm.

Black. Ferruginous underside of flagellum. Pale yellow: the whole clypeus but semitransparent ventral edge; subapical Tsa; lateral spot on fore border and subapical stripe on N 1 disk; median spot on Sc 2 and postscutellar area; ventral X 1 and X 2 and trochanters; most of the remainder of legs; apical stripes with waving fore edge on 1 st to 6 th terga and 2 nd to 6 th sterna. Wings hyaline. Mid flagellomeri with a ratio L / LA about 2.4. No acute keel along fore border, with acute prominent tooth on antero ventral corner of N 1 disk with a ratio LApos / Lmed about 2.9. Apical hindfemur rounded. Em 3 without p and wrinkles. Bipunctate tergal surface. No p on apical 1st sternum. Notch on 7th tergum as large as its lateral lobes, with a median longitudinal ridge. Volsella angled.

N o t e. Notwithstanding the distance of the relative typical localities their coupling has been proposed because of the rarity of taxa of this genus in Palaerctic Region and particularly their being the unique records from Saharian Region and Northern Africa. Besides genitalia there are no very distinctive character states apart the contextual presence of anteroventral tooth and absence of laminated carina along fore border of N 1 disk. Female is distinct from other female taxa with ferruginous metasoma by the shape of clypeus and scopa.

Figures

Figs 241-242: Mesa sahariana: (241) habitus; (242) basal hindtarsomerus; Figs 243-248: Mesa sahariana: (243) head and pronotum, dorsal aspect; (244) head, frontal aspect; (245) epipygium, dorsal aspect; (246) gonosquama;(247) volsella; (248) aedeagus; (241: scale bar: 2.5mm; 242: scale bar: 0.5 mm; 243-244: scale bar: 1mm; 245-248: scale bar: 0.5mm).