Nixonia, Masner, 1958

van Noort, Simon & Johnson, Norman, 2009, New species of the plesiomorphic genus Nixonia Masner (Hymenoptera, Platygastroidea, Platygastridae) from South Africa, ZooKeys 20 (20), pp. 31-51 : 34-36

Key to species of Nixonia

Online interactive Lucid matrix and Lucid Phoenix keys are available at: http://www. waspweb.org/Platygastroidea/Keys

1 Third antennal segment shorter than, or subequal to, second antennal segment........................................................................................................... 2 – Third antennal segment longer (>1.15×) than second antennal segment……… 5

2 Femora and tibiae yellow; eye height at least 2.5× shortest distance between eyes............................................................................................................ 3

– Femora and tibiae reddish brown to black; eye height less than twice shortest distance between eyes.................................................................................. 4

3 Medial portion of posterior margin of pronotum, scutellar rim, tegulae, propodeal tooth, margins of tergites 1–4, and tarsi yellow; upper mesepisternum punctuate; Namibia............................................................... N. flavocincta

– Mesosoma, metasoma black without yellow markings, tarsi dark brown; upper mesepisternum longitudinally striate; Namibia....................... N. sicaria

4 Forewings extending to middle or posterior margin of tergite 4; female metasoma with tergites 2–4 brick red, mid- and hind femora and tibiae reddish brown; South Africa................................................................. N. corrugata

– Forewings longer, extending nearly to posterior margin of tergite 5; female body and legs entirely black; South Africa..................................... N. stygica