Bagnalliella 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 : 25

Bagnalliella Karny

( Fig. 26 )

Bagnalliella Karny, 1920: 41 . Type species: Cephalothrips yuccae Hinds , by monotypy.

Seven of the nine species listed in this genus are from the arid areas of southwestern USA, in association with plants of the genus Yucca (Agavaceae) . The generic relationships of the other two species (from Africa and New Guinea) remain doubtful. One species, yuccae Hinds , has been distributed widely around the world with its cultivated host-plant, and is known from China. The head of Bagnalliella species associated with Yucca has distinctive small grooves on the cheeks, but the number of antennal sensoria is known to be variable ( Tree 2010).

Diagnosis: Head a little longer than wide ( Fig. 26 ); eyes normal, postocular setae usually short and acute apically; stylets retracted to postocular setae, close together medially, maxillary bridge present; antennae 8-segmented, III usually with 2 sensoria, IV usually with 3; pronotum with 3 pairs of developed setae, am and ml minute, notopleural sutures complete; basantra present; mesopresternum transverse; sternopleural sutures present; fore tarsal tooth present in both sexes; fore wings weakly constricted medially, with duplicated cilia; pelta triangular or semicircular; tergites II–VII with 2 pairs of wing-retaining setae; tube with straight sides, shorter than head, anal setae slightly longer than tube; male sternite VIII without pore plate.

Figures

FIGURES 21–27. Phlaeothripinae genera. Aleurodothrips sp. 21–22: (21) female; (22) male. Ventral view of thorax 23–24: (23) Apterygothrips viretum; (24) Asianthrips orientalis. (25) Baenothrips moundi, tergites III–X. Head & pronotum 26–27: (26) Bagnalliella sp.; (27) Bamboosiella cingulata.