Gemmathrips Reyes

Dang, Li-Hong, Mound, Laurence A. & Qiao, Ge-Xia, 2014, Conspectus of the Phlaeothripinae genera from China and Southeast Asia (Thysanoptera, Phlaeothripidae), Zootaxa 3807 (1), pp. 1-82 : 32

Gemmathrips Reyes

( Fig. 119 )

Gemmathrips Reyes, 1994: 389 . Type species: Gemmathrips brevis Reyes , by monotypy.

The holotype female and paratype male of the type species of this monotypic genus have been studied (in ANIC). These specimens have three sensoria on antennal segment IV, not two as stated in the original description, and the genus is therefore a member of the Liothrips- lineage. However, the compound eyes have the posterior ommatidia enlarged ( Fig. 119 ), and this condition also occurs in three related genera: Manothrips , Praeciputhrips and Rosingothrips . Antennal segment VIII is long and slender, and G. brevis is similar in structure to some species placed in Thlibothrips .

Diagnosis: Head much longer than wide; eyes normal, with enlarged posterior ommatidia, postocular setae well-developed ( Fig. 119 ); stylets retracted to behind postocular setae, V-shaped; antennae 8-segmented, III with 1 sensorium, IV with 3; pronotum with 4 pairs of developed setae, am minute, notopleural sutures incomplete; basantra absent; mesopresternum transverse; sternopleural sutures absent; fore tarsal tooth absent in both sexes; fore wings parallel-sided, with duplicated cilia; pelta broadly triangular; tergites II–VII with 2 pairs of wingretaining setae; tube with straight sides, shorter than head; male sternite VIII without pore plate.

Figures

FIGURES 118–121. Liothrips-lineage. Head & pronotum: (118) Adelphothrips longisetosus; (119) Gemmathrips brevis; (120) Rosingothrips ommatus; (121) Zelotothrips fuscipennis.