Chelaeothrips Karny

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 : 27

Chelaeothrips Karny

( Fig. 104 )

Chelaeothrips Karny, 1923: 374 . Type species: Chelaeothrips annamensis Karny , by monotypy.

Described originally for a single species represented by both sexes taken from a gall in Vietnam, a second species was described subsequently based on a single female from Sumatra. The genus shares with Sumatrothrips a curious condition of the pronotal epimera being fully eroded lateral to the insertion of the major epimeral seta. Despite the presence of only two sensoria on the fourth antennal segment, this genus is presumably a member of the Liothrips - lineage.

Diagnosis: Head longer than wide, prolonged in front of eyes over bases of antennae, ocellar triangle located in front of eyes ( Fig. 104 ); base of head sharply constricted; eyes without enlarged ommatidia, postocular setae elongate, distant from posterior margin of eyes; maxillary stylets wide apart with distinct bridge; antennae 8- segmented, II asymmetric with inner magin angulate ( Fig. 104 ), III with 1 sensorium, IV with 2; pronotum with 3 pairs of long major setae, am minute, ml small but longer than discal setae, notopleural sutures incomplete, epimera eroded lateral to base of major seta; basantra absent; mesopresternum absent; sternopleural sutures absent; fore tarsal tooth present in both sexes; fore wings parallel-sided, with duplicated cilia; pelta eroded irregularly; tergites II–VII with 2 pairs of wing-retaining setae; tube narrowed to apex, slightly shorter than head; male sternite VIII without pore plate.

Figures

FIGURES 104–107. Liothrips-lineage. (104) Chelaeothrips annamensis, antenna, head & pronotum; (105) Coryphothrips trochiceps, head & foreleg; (106) Zelotothrips fuscipennis, metanotum & pelta; (107) Coryphothrips trochiceps, thorax.