Haplothrips davisi Bianchi

Mound, Laurence A. & Matsunaga, Janis N., 2017, The species of Haplothrips (Thysanoptera, Phlaeothripinae) and related genera recorded from the Hawaiian Islands, ZooKeys 662, pp. 79-92 : 83

Haplothrips davisi Bianchi

Haplothrips davisi Bianchi, 1946: 503.

Haplothrips fissus Bianchi, 1947: 37. syn. n.

Remarks.

The single female from which fissus was described is identical in structure with specimens of davisi , except that the two sub-median dorsal anal setae are bifurcate at a point approximately two-thirds along their length (Fig. 14). This condition is here interpreted as teratological, possibly resulting from damage as a pupa, although such aberrations are more commonly associated with damage to the anterior rather than the posterior end of phlaeothripid pupae. Described from nearly 20 specimens taken on Hawaii, both sexes of davisi were collected in July 2016 on Hawaii on Mauna Kea, from dead Acacia koa bearing lichens, and on Maui on Haleakala at approximately 2500m, from dead Styphelia with lichens. Although similar in general appearance to rosai , the two sense cones on each of antennal segments III and IV are stouter, segment VIII is broad at the base (Fig. 19), the major setae on tergite IX are longer than the tube (Fig. 14), and the male lacks a sternal pore plate. The pronotal anteromarginal and anteroangular pairs of setae are equally long, but they vary in length from scarcely three to more than five times as long as the pronotal discal setae. In the field, the adults could be mistaken for Karnyothrips flavipes , although the antennae and hind tibiae are dark brown, and in both sexes the fore tarsi lack a prominent tooth.