Teasienna Heydon

(Figs 72–120)

Teasienna Heydon, 2004: 183 –184; type species: T. eirene Heydon, 2004, by original designation and monotypy.

Diagnosis. Female clava asymmetric due to large area of microsetation (100%) (Figs 75, 87, 95, 120); male clava symmetric (100%) (Figs 74, 106); propodeum with flange-like projections anteriorly partially concealing dorsellum, with median area smooth, and without plicae (100%) (Figs 80, 98, 109, 118); lateral side of prothorax with visible whitish membranous area between posteroventral corner of pronotum and fore coxa, posteroventral corner of pronotum short, rounded (100%) (Figs 79, 89, 108, 117); posterior margin of gena not carinate (100%); medial ventral margin of scape at least partly carinate (100%) (Figs 75, 87, 113); antenna inserted below middle of face (100%) (Figs 75, 84, 93, 103, 113); both mandibles with 3 teeth, inner mandibular tooth double (100%) (Fig. 103); posterior part of mesoscutellum conspicuously surpassing base of propodeum, with one median spine (100%) (Figs 78, 96, 107, 116); marginal vein much shorter than stigmal vein (100%) (Figs 81, 90, 99, 110,119); notauli complete (100%) (Figs 78, 88, 96, 107, 116). Male: scape without any ventral protuberance (100%) (Figs 74, 106).

Remarks. Due to its very short marginal vein (Figs 81, 90, 99, 110, 119), Teasienna resembles certain Eutrichosomatinae such as Manineura Bouček and Collessina Bouček, but differs from both genera mostly in having the axillae not advanced, and by a different shape of the clypeus and antenna. For differences between Teasienna and Austroterobia, see comments under the latter genus. Previously known only from one Oriental species, the distribution of the genus now extends to the Afrotropical region, where the species diversity seems much higher. The biology is unknown, but given the gastral structure, which is similar to that of Austroterobia, it is highly possible that the hosts are also scale insects.