Horistothrips Morgan

Mound, Laurence A., Dang, Li-Hong & Tree, Desley J., 2013, Genera of fungivorous Phlaeothripinae (Thysanoptera) from dead branches and leaf-litter in Australia, Zootaxa 3681 (3), pp. 201-224 : 212

Horistothrips Morgan

Two species from Australia are placed in this genus, together with three non-Australian species whose generic relationships remain in doubt. The type species, H. australiae ( Fig. 24 ), lives under the bark of certain Eucalyptus trees in eastern Australia ( Tree & Walter 2012), but H. platygaster is known only from a few specimens taken in the north of this continent ( Mound 2008).

Diagnosis. Usually micropterous; head longer than wide, posterior half reticulate; postocular setae capitate; stylets retracted to eyes, close together medially; antennae 8-segmented, VIII broad at base, III with 1 sensorium, IV with 2 or 3 sensoria; pronotum with 5 pairs of capitate setae; notopleural sutures complete; basantra absent; mesopraesternum reduced to two lateral triangles; sternopleural sutures long; both sexes with fore tarsal tooth; pelta triangular; tergites II–VII each with 2 pairs of wing retaining setae; tube shorter than head, anal setae much longer than tube; male sternite VIII with large pore plate.

Figures

FIGURES 19 – 24. Phlaeothripinae genera. (19) Baenothrips moundi, tergites IX – X; (20) Senithrips psomus, antenna; (21) Ecacanthothrips tibialis, small male; (22) Habrothrips curious; (23) Hoplothrips orientalis small male; (24) Horistothrips australis; (25) Holothrips oceanicus.