Haplothrips Amyot & Serville

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 : 35

Haplothrips Amyot & Serville

( Figs 49, 51 )

Haplothrips Amyot & Serville, 1843: 640 . Type species: Phloeothrips albipennis Burmeister , by monotypy.

Species of the genus Haplothrips are found worldwide. This is the second largest genus in the Phlaeothripinae , with over 240 species. Two subgenera are generally recognized based on the presence or absence of duplicated wing cilia ( Figs 49, 51 ). The smaller of the two, Trybomiella , includes less than 20 species and these are probably not all closely related. From China, two species of Trybomiella and 18 species of Haplothrips sensu stricto are recorded, and 16 species are listed from Indonesia ( zur Strassen 1994). Wang (1996) provided characters to distinguish the four most common species of Haplothrips in Taiwan, and Okajima (2006) provided a key to nine species from Japan, but there is no identification key to the extensive Haplothrips fauna of the Southeast Asian region, and undescribed species have been studied from northern China. The presence in the head of a maxillary bridge is shared by almost all Haplothrips , but species have been studied both from Central America and from India in which this structure is not visible.

Diagnosis: Head variable in shape, usually a little longer than wide; eyes normal, postocular setae usually developed, rarely reduced; stylets usually retracted to postocular setae, distinct maxillary bridge rarely absent; antennae 8-segmented, III with 1 or 2 sensoria, IV with 4; pronotum with major setae variable in length, notopleural sutures usually complete; basantra present; mesopresternum transverse, or eroded medially; sternopleural sutures absent; fore tarsal tooth usually absent in female, absent or present in male; fore wings constricted medially, usually with duplicated cilia ( Fig. 49 ); pelta triangular or bell-shaped; tergites II–VII with 2 pairs of wing-retaining setae; tube with straight sides, shorter than head; male sternite VIII without pore plate.

Figures

FIGURES 49–54. Phlaeothripinae genera. Haplothrips 49–51: (49) subgenus Haplothrips, forewing; (50) Ventral view of thorax; (51) subgenus Trybomiella, forewing. Liothrips vaneeckei 52–53: (52) Ventral view of thorax; (53) Forewing. (54) Mesothrips jordani, ventral view of thorax.