Psalidothrips longidens, Wang, Jun, Tong, Xiao-Li & Zhang, Wei-Qiu, 2007

Wang, Jun, Tong, Xiao-Li & Zhang, Wei-Qiu, 2007, The genus Psalidothrips Priesner in China (Thysanoptera: Phlaeothripidae) with three new species, Zootaxa 1642, pp. 23-31 : 30-31

Psalidothrips longidens sp. nov.

( Figs. 15–19 )

Female macroptera. Color: Yellowish brown; brown at head dorsum, anterior and lateral margins of pterothorax, and abdominal tergite II and tube; abdominal segments IV to IX yellowish brown; antennal segment I dark brown, segment II brown, segments III to VIII gradually darkened towards apex, yellow to brown; mid and hind coxae shaded with brown; wings shaded with brown, cilia dark. Head ( Fig. 15 ): Almost as long as broad, head dorsally with weak sculpture at base; postocular setae almost as long as eyes, apices blunt; postocellar setae a little longer than diameter of posterior ocelli; cheeks not rounded, almost not constricted behind eyes and not narrower at base of head. Eyes comparatively small. Maxillary stylets short and wide apart, Vshaped. Antennae ( Fig. 18 ) 8-segmented, twice as long as head, segment III the longest, segment VIII constricted basally; segments III and IV each with 3 sense cones, segment V and VI each with 2 sense cones, segment VII with 1 sense cones. Pronotum: Major body setae not expanded at apices, anteroangular setae and anteromarginal setae reduced to minute setae; epimeral setae longer than midlateral setae and shorter than posteroangular setae. Fore tarsal tooth ( Fig. 19 ) about two thirds as long as tarsal width. Forewing with three sub-basal wing setae minute, without duplicated cilia. Abdomen: Pelta ( Fig. 17 ) weak, faintly sculptured. Abdominal terga III to VII each with a pair of well developed wing-retaining setae, tergum VII setae smaller; segments II to IX each with sculpture at dorsum anterior and venter anterior; B2 on tergum IX much longer than B1, B1 almost as long as tube, tube a little more than two thirds head length, tube length 1.8 times basal width. Tube basal width 2.7 times apical width; tube with three pairs of anal setae a little longer than tube, and three pairs of short anal setae almost half length of tube.

Measurements, holotype female in micrometres. Body length 1740. Head total length 175, head maximum width 178; eye length 68, postocular setae length 70, diameter of posterior ocellus 15, postocellar setae length 18. Pronotum median length 135, midlateral setae length 43, posteroangular setae length 73, epimeral setae length 53. Fore tarsal tooth length 28. Forewing length 650. Abdominal tergite IX setae B1 length 123, B2 length 150; tube length 120, tube basal width 68, apical width 25, longer anal setae length 128, shorter anal setae length 63. Antennal total length 350, segments I–VII length (width): 33(38); 38(33); 53(35); 43(33); 43(33); 45(30); 35(25); 43(18).

Male macroptera. Similar in color and structure to female, but abdominal sternum VIII with glandular area ( Fig. 16 ). Tube almost 0.7 times length of head, and 1.5 times tube basal width, tube basal width as long as 3 times tube apical width.

Measurements, paratype male in micrometres. Body length 1540. Head total length 160, head maximum width 160; eye length 53, postocular setae length 65, diameter of posterior ocellus 13, postocellar setae length 13. Pronotum median length 125. Fore tarsal tooth length 33. Forewing length 500. Abdominal tergum IX setae B1 length 100, B2 setae length 75; tube length 110, tube basal width 75, apical width 25, Antennal segments I–VII length: 30; 33; 45; 35; 38; 38; 30; 38.

Material examined. Holotype: female macroptera. China: Guangdong Province, Guangzhou, Longdong (23 14' 07" N, 113 24' 05" E), 1.xii.2006, from bamboo forest leaf-litter (Wang Jun).

Paratypes: 5 female and 1 male, same data as holotype.

Etymology. The specific epithet is a combination of Latin words long and dens, referring to the large tooth on the fore tarsus of both sexes.

Remarks. The new species belongs to the group with a large fore tarsal tooth in the female, and is most similar to Psalidothrips armatus Okajima , but can be distinguished by the following features: postocular setae not expanded apically, antennal segment VIII longer than segment VII, abdominal dorsum IV to IX yellowish brown and tube dark brown. In contrast, P. a r m a t u s has postocular setae expanded apically, the eighth antennal segment as long as the seventh antennal segment, abdominal dorsum IX brown and tube brownish yellow.

Figures

FIGURES 11 – 19. Psalidothrips species. P. b ico lor at us sp. nov. 11 – 14: (11) head, female; (12) abdominal sternum VIII, male; (13) pelta, female; (14) antenna, female. P. longidens sp. nov. 15 – 19: (15) head, female; (16) abdominal sternum VIII, male; (17) pelta, female; (18) antenna, female; (19) fore leg, female.