Xylaplothrips Priesner

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 : 76

Xylaplothrips Priesner

( Figs 115 , 138, 139 )

Haplothrips (Xylaplothrips) Priesner, 1928: 572 . Type species: Cryptothrips fuliginosa Schille , by monotypy.

This genus of Haplothripini remains a taxonomic problem, although currently it includes 26 named species. Four of these are recorded from China, of which one was described from Java, Indonesia. The species placed in Xylaplothrips usually have three sensoria on antennal segment III and four on segment IV ( Fig. 138 ), although the type species has only two sensoria on the third segment. Almost nothing in known of the biology of any species placed in this genus. Most are known only from a few specimens beaten from dead branches, but others have been found within galls. Brachythrips bogoriensis was described by Karny (1923) from a single female collected in Java. This specimen has three sensoria on antennal segment III and four on IV, the fore wings are weakly constricted medially, and the stylets are wide apart with a long slender maxillary bridge. On the basis of these three character states the species is here transferred to this genus as Xylaplothrips bogoriensis (Karny) comb.n. The specimen is severely contracted and opaque, and few details are visible, but the abdominal setae are elongate, and the fore wings lack duplicated cilia. The genus Brachythrips is based on a single female taken in Finland that is closely related to Liothrips , according to Priesner (1964a).

Diagnosis: Head a little longer than wide; eyes normal, postocular setae developed; stylets usually retracted to postocular setae, far apart, maxillary bridge present; antennae 8-segmented ( Fig. 138 ), III usually with 3 sensoria, IV with 4; pronotum usually with 5 pairs of developed setae, sometimes am reduced, notopleural sutures complete; basantra present; mesopresternum transverse; sternopleural sutures absent; fore tarsal tooth usually present in both sexes; fore wings constricted medially, with duplicated cilia (rarely without); pelta usually trapezoidal; tergites II–VII with 2 pairs of wing-retaining setae; tube with straight sides ( Fig. 139 ), shorter than head; male sternite VIII without pore plate.

Figures

FIGURES 113–117. Phlaeothripinae genera. Trichinothrips breviceps 113, 114, 116: (113) head, pronotum & foreleg; (114) antenna; (116) ventral view of thorax. (115) Xylaplothrips bogoriensis, antenna; (117) Eothrips crassicornis, head & pronotum.

FIGURES 134–142. Phlaeothripinae genera. Antennae 134–138: (134) Acanthothrips nodicornis; (135) Propealiothrips moundi; (136) Haplothrips ganlbaueri; (137) Haplothrips clarisetis; (138) Xylaplothrips inquilinus; Tergites IX–X 139–141: (139) Xylaplothrips inquilinus; (140) Praepodothrips causiapeltus; (141) Podothrips ferruginenus. (142) Myopothrips symplocobius, fore tibiae.