Psalidothrips bicoloratus, 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 : 28-30

Psalidothrips bicoloratus sp. nov.

( Figs. 11–14 )

Female macroptera. Color: Distinctly bicoloured, dark brown and straw yellow. Head, antennal segments I, II, V in apical half and VI-VIII dark brown; antennal segment V in basal half and tube in middle light brown; antennal segments III, IV, all legs and rest of body straw yellow; wings shaded with grayish brown, major body setae light brown. Head ( Fig. 11 ): Almost as long as broad, head dorsally almost without sculpture; postocular setae shorter than eyes, apices not expanded, postocellar setae a little longer than diameter of posterior ocelli; cheeks not rounded, almost not constricted behind eyes and narrower at base of head, with some pairs minute setae. Eye length more than one-third of head length. Maxillary stylets short and wide apart, V-shaped. Antennae ( Fig. 14 ) 8-segmented, twice as long as head, segment III the longest, segment VIII longer than segment VII and constricted basally, segments III and IV each with 3 sense cones, segments V and VI each with 2 sense cones. Pronotum: Major body setae not expanded at apices, anteroangular and anteromarginal setae reduced to minute setae; epimeral setae longer than midlateral setae and shorter than posteroangular setae. Fore tarsus unarmed. Forewing without duplicated cilia; with three sub-basal wing setae minute, almost as long as postocellar setae. Abdomen: Pelta ( Fig. 13 ) weak, a pair of campaniform sensilla present, faintly sculptured near anterior; abdominal terga III to VII each with a pair of well developed sigmoid wing-retaining setae, and a pair of weak setae; B2 on tergum IX much longer than B1, B1 almost as long as tube. Tube a little less than two thirds as long as head, tube length 1.5 times basal width, tube basal width a little longer than twice apical width; tube with three pairs of anal setae longer than tube, and three pairs of short anal setae.

Measurements, holotype female in micrometres. Body length 1700. Head total length 195, from anterior margin of eyes 175, head maximum width 195, head basal width 175; eye length 87, postocular setae length 63, diameter of posterior ocellus 18, postocellar setae length 20. Pronotum median length 135, midlateral setae length 43, posteroangular setae length 68, epimeral setae length 55 Forewing length 725. Abdominal tergum IX setae B1 length 115, B2 length 138; tube length 113, tube basal width 75, apical width 35, longer anal setae length 125, shorter anal setae length 38. Antennal total length 390, segments I–VII length (width): 28(43); 38(38); 55(30); 48(30); 50(28); 45(28); 40(23); 40(15).

Male macroptera. Similar in color and structure to female, but fore tarsus armed with a tooth, abdominal sternum VIII with glandular area ( Fig. 12 ). Tube almost half as long as head, tube length 1.3 times basal width, tube basal width 2.5 times apical width.

Measurements, paratype male in micrometres. Body length 1500. Head total length 170, from anterior margin of eyes 158, head maximum width 170, head basal width 158; eye length 68, postocular setae length 48, diameter of posterior ocellus 13, postocellar setae length 13. Pronotum median length 120. Fore tarsal tooth length 20. Forewing length 625. Abdominal tergum IX setae B1 length 85, B2 setae length 78; tube length 83, tube basal width 65, apical width 28, longer anal setae length 103, shorter anal setae length 30. Antennal segments I–VII length: 23; 33; 48; 43; 43; 40; 33; 35.

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

Paratypes: same data as holotype, 2 female, 3 male; same locality, habitat and collector, 28.iii.2005, 2 female.

Etymology. The specific name is from the Latin words bicolor referring to the distinctly bicolored body.

Remarks. The new species belongs to the group with three sense cones on both the third and fourth antennal segments, and is easily distinguished from the other species of this group by its body color, and the cheeks almost not constricted behind the eyes.

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.