Streptothrips Priesner,

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: 220

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Streptothrips Priesner


Streptothrips Priesner 

Okajima (1981) provided a revision and key to five of the 10 species now recognised in this genus of Plectrothripini. These are all from tropical countries, eight from the Old World of which S. tribulatius  is from Queensland. Winged and wingless individuals of species in this genus differ greatly in structure.

Diagnosis. Head much longer than wide; postocellar and postocular setae long and bluntly pointed; mouthcone short and rounded, stylets deeply retracted into head, close together medially; antennae 8 -segmented, VIII long, slightly constricted basally, III and IV broad, each with 4–12 short stout sensoria; pronotum reduced to a shield, with 2 pairs of epimeral setae; notopleural sutures complete; basantra weak; mesopraesternum reduced or absent; no sternopleural sutures; fore tarsal tooth stout in both sexes, mid- and hind tibiae with apical spur-like stout setae; fore wings, if present, with duplicated cilia; pelta broad, posterior margin eroded, sometimes into three plates; tergites without wing retaining setae; tube shorter than head, anal setae about 1.5 X as long as apical width of tube; sternite VIII with a series of long, stout posteromarginal setae; male sternite VIII without pore plate.