Stomothrips Okajima

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 : 218

Stomothrips Okajima

Known only from northern Australia, this genus comprises two species, S. cycasi and S. mouldeni , both of which were collected from the fronds of Cycas species that apparently were affected by fungus. These two thrips both have the mouth-cone very long, but in cycasi this is directed posteriorly, whereas in mouldeni it is directed downwards and thus appears shorter in dorsal view ( Figs 39, 43 ).

Diagnosis. Head much longer than wide; postocular setae long, capitate; mouth-cone long, stylets retracted to eyes, close together medially; antennae 8-segmented, III with 1 sensorium, IV with 2 sensoria; pronotum with 5 pairs of capitate setae; notopleural sutures complete; basantra present; mesopraesternum transverse, slender or divided; no sternopleural sutures; fore tarsi without tooth; wings weakly constricted medially, without duplicated cilia; pelta hat-shaped; tergites II–VII each with 2 pairs of wing retaining setae; tube much shorter than head, anal setae about as long as tube; male sternite VIII without pore plate.

Figures

FIGURES 39 – 45. Phlaeothripinae genera. (39) Stomothrips mouldeni; (40) Stephanothrips occidentalis; (41) Strepterothrips orientalis, male; (42) Plectrothrips australis, pelta & tergite II; (43) Stomothrips mouldeni, thoracic sternites; (44) Yarnkothrips kolourus; (45) Terthrothrips ananthakrishnani.