Liothrips hsuae, 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 : 362-363

Liothrips hsuae sp.n.

( Figs 47–53 )

Female macroptera. Body length 3.2–3.7 mm. Color brown, antennal segments I and basal half of II brown, same colour as head, distal half of II yellowish, III–VI yellow, VII & VIII dark brown; all femora brown, fore tibiae yellow with basal half brownish, mid- and hind tibiae brown except distal end yellow, all tarsi yellow; fore wings hyaline.

Head 1.4 times as long as wide ( Fig. 47 ), po setae blunt, as long as eyes, maxillary stylets close together medially, retracted anterior to po setae; antennal segment III 1.5 times, segment IV 1.4 times the length of segment II ( Fig. 53 ). Pronotum with 5 pairs of major setae, all blunt, am setae about same length as or shorter than aa setae ( Fig. 48 ); mesopresternum boat-shaped with median protrusion ( Fig. 50 ); metanotum with dense longitudinal striae, reticles with inner wrinkles; fore wing with 20–24 duplicated cilia; fore tarsal tooth absent. Pelta triangular ( Fig. 51 ), with regular reticles, 1 pair of CPS; tergite II laterally with 6 accessary setae ( Fig. 49 ); tergites II–VII with 2 pairs of wing-retaining setae, tube straight, shorter than head ( Fig. 52 ).

Measurements. (holotype in microns). Body length 3250. Head, median length 330; greatest width 240; po setae 90. Antennal segments (L/W) I 40/40, II 60/30, III 110/30, IV 100/40, V 90/40, VI 90/40, VII 60/20, VIII 40/15, total length 5900. Pronotum, median length 170; greatest width 450, am setae 50, aa setae 50; fore wing length 1200. Pelta, length 150; width 180; tube length 250.

Male. Unknown.

Specimens examined. Holotype female, Taiwan, Nanjan Mt. (Kendin), from Ficus , 14.iv.1993 . Paratype female with same data as holotype.

Etymology. This species is named after Miss Mon-Yu Hsu of TARI who collected the specimens.

Comments. This species shares several characteristics with L. piperinus but they can be distinguished by color of fore wings and striae on meso and metanotum as mentioned in the key above. Besides, shapes of mesopresternum are different; it is narrowly connected or even separated in piperinus ( Fig. 68 ), but well connected and protruded irregularly in the middle in this new species ( Fig. 50 ).

Figures

FIGURES 47–53. Liothrips hsuae sp.n.: (47) head; (48) pronotum; (49) tergite II; (50) mesopresternum; (51) pelta; (52) tube; (53) shape of antenna.

FIGURES 66–71. Liothrips piperinus: (66) head; (67) pronotum; (68) mesopresternum; (69) pelta; (70) tergite II; (71) shape of antenna.