Psephenothrips baiheensis, Wang & Lin, 2020

Wang, Chin-Ling & Lin, Feng-Chyi, 2020, Genera and species of the Liothrips lineage (Thysanoptera, Phlaeothripinae) from Taiwan, Zootaxa 4861 (3), pp. 349-375 : 371

Psephenothrips baiheensis sp. n.

( Figs 90–97 )

Female macroptera. Body length 3.6 mm. Color brown with tube darkest, eyes with red pigment; antennae segments I and II dark brown, same colour with head except distal end of II yellowish, III yellow, IV yellow with distal end brownish, V basal half yellow and distal half dark brown, VI–VIII dark brown; all femora, tibia and tarsi brown except fore tarsi yellow, fore wings hyaline; major body setae hyaline.

Head longer than width ( Fig. 90 ), cheeks straight, blunt po setae subequal to length of eyes, maxillary stylets deeply reaching middle of eyes, touching or overlapping medially; antennal segment III and IV longest, about 1.4 times length of segment II, segment VIII cornical and shorter than VII ( Fig. 97 ).

Pronotum with 5 pairs of prominent setae ( Fig.91 ), all blunt; aa setae as long as or a little longer than am setae; pronotum notopleural suture complete. mesopresternum boat shaped with a sharp median protruding ( Fig. 94 ); metanotum reticulated medially ( Fig. 92 ); MSS present; fore femora slightly enlarged, pretarsal tooth absent; fore wing with 23–26 duplicated cilia.

Pelta triangular, with 2 CPS ( Fig. 95 ); tergite II laterally with 2 accessary setae ( Fig. 93 ); tergites II–VII with 2 pairs of wing-retaining setae, anterior margins of tergites III-VIII membranous ( Fig. 93 ); tube shorter than head ( Fig. 96 ).

Measurements (holotype in microns) Body length 3580, head median length 470; greatest width 340; postocular setae length 105, antennal segment (L/W) I 60/65, II 70/50, III 120/40, IV 100/50, V 80/40, VI 80/38, VII 60/32, VIII 50/18, total length 620, pronotum median length 220; greatest width 500; fore wing length 1500; pelta length 150, width 270; tube length 300.

Male macroptera. Body length 2.5 mm. Similar to female, fore tarsus without tooth.

Specimens examined. Taiwan. Holotype female, Guanziling (Baihe), dead wood, v. 1993; paratypes 1 female, 1 male with same data as holotype.

Etymology. Indicate the place Baihe, Tainan, where it was collected.

Comments. The dark brown color of distal half of antennal segment V and segments VI-VIII make this species distinct. Besides, the membranous anterior margins of tergites III-VIII make this species different from other Psephenothrips species.

Figures

FIGURES 90–97. Psephenothrips baiheensis sp.n.: (90) head; (91) pronotum; (92) metanotum; (93) tergites II-III; (94) mesopresternum; (95) pelta; (96) tube; (97) shape of antenna.