Mesa tylocera, Boni, 2013

Boni, M., 2013, Afrotropical taxa of the genus Mesa SAUSSURE 1892 (Hymenoptera, Tiphiidae, Myzininae), Linzer biologische Beiträge 45 (2), pp. 1657-1744 : 1699

Mesa tylocera nov.sp.

H o l o t y p u s - Kenya = /Coll A. Mochi 6.XII.72 Watamu Malindi Kenya / MSNP.

Holotype. figs 256-262 . Body size: 10 mm.

Black. Yellow: mandible; the whole of clypeus but semitransparent ventral edge and two oval areas; subapical Tsa; subapical stripe and anteroventral corner of N 1 disk; perimeter of tegula and LaSt 2; tarsi; fore and mid trochamters; most of mid tibia and femur; apex of hind tibia and femur; ventral surface of X 1 and X 2; two lateral spots on 2 nd Te; narrow apical stripe on 3 rd to 5 th Te. Wings hyaline.

Tsa not complanar, forming a clear angle in frontal aspect. Flagellum thickening toward apex. Very short, almost undetectable tyloid on 6 th, median half 7 th, as long as element on 8 th to 10 th, on basal half 11 th Pronotum with a distinct lamellar keel along its fore border and tooth on its anteroventral corner. Ventral apex of hind femur simply rounded. 2 nd to 5 th tergal surfaces bipunctate.. 1st metamerus very slender, ratio L / LApos of 1 st sternum a bit less than 4, its apical surface with few p. Epipygium with a very shallow median notch, delimited laterally only by a rounded angle.

Very distinct species by the presence of tyloida on flagellum. It is a very rare condition within the entire subfamily, present in only three other taxa of Mesa .

Derivatio nominis. From the Greek word IJȪȜȘ = callosity, callus and țİȡĮ = horn.

Figures

Figs 256-262: Mesa tylocera: (256) head, frontal aspect;(257) pronotum, dorsal aspect; (258) pronotum, lateral aspect; (259) epipygium dorsal aspect; (260) gonosquama; (261) volsella; (262) aedeagus; (256-258: scale bar: 1 mm; 259-262: scale bar: 0.5mm).