Terthrothrips palmatus, Wang, Jun & Tong, Xiaoli, 2011

Wang, Jun & Tong, Xiaoli, 2011, The genus Terthrothrips Karny (Thysanoptera: Phlaeothripidae) from China with one new species, Zootaxa 2745, pp. 63-67 : 64-66

Terthrothrips palmatus sp. n.

( Figs. 1-6 )

Female macropterous or micropterous. Body brown; antenna brown except basal parts of segments III–V light brown; major body setae brown. Head ( Fig.1 ) longer than wide, about 1.3 times as long as broad and prolonged in front of eyes; broadest across cheeks, dorsal surface weakly sculptured; postocular setae well developed, shorter than eye length, expanded at apex; cheeks rounded, distinctly constricted behind eyes, slightly constricted at base; ocelli well developed and anterior one larger than. posterior ocelli; antennae ( Figs. 2-3 ) long and slender, about 2.4 times as long as head length, segment VIII shorter than segment VI, segment III with two sense cones, and IV with three (2+1) sense cones; maxillary stylets short, usually wide apart and V-shaped in head. Thorax: Pronotum ( Fig. 4 ) at middle 0.5 times as long as head length, a half of pronotum width, surface with horizontal sculpture, without median longitudinal line; anteromarginal setae well developed and expanded at apex, anteroangular setae vestigial, but midlateral, posteroangular and epimeral setae well developed and expanded at apex; fore tarsus armed with a tooth; basantra reduced or vestigial and membranous, ferna well defined; mesopresternum reduced to pair of triangles laterally; metanotum ( Fig. 6 ) reticulated, median pair of setae long and pointed at apex; forewing fully developed, three pairs of sub-basal setae present, apex expanded; metathoracic sternopleural sutures present. Abdomen: Pelta ( Fig. 5 ) hat-shaped with irregular sculpture and podgy lateral lobes, a pair of campaniform sensilla present; tergites II–VII each with two pairs of sigmoid wing-remaining setae, sternites III–VII each with 4–10 discal setae; both B1 and B2 setae on tergum IX shorter than tube length, B1 much longer than B2, B1 well developed and slightly expanded at apex, B2 slender and pointed at apex; tube almost 2.5 times as long as width; anal setae short and about a half of tube length.

Measurements, holotype female in micrometres. Total body length 1725; head L/W (200/170); eyes length 75, diameter of anterior (posterior) ocelli 18 (14); pronotum median length 100, width 246; tube length 119, tube maximum width 73, apex width 35. Antennal segments I–VIII length (width) as follows: 38(35); 43(30); 86(25); 84(28); 81(24); 49(20); 44(18); 46(11). Postocular setae 81; antennal terminal setae 69; pronotum anteroangular setae 78, anteromarginal setae 41, midlateral setae 80, posteroangular setae 79, epimeral setae 78; forewing subbasal setae B1 73, B2 75, B3 66; tergum IX B1 setae 116, B2 setae 108.

Measurements, paratype female in micrometres. Total body length 1350; head L/W (188/163); eyes length 70, diameter of ocelli 10, distance of posterior ocelli 18; pronotum median length 98, width 245; tube length 106, tube maximum width 66, apex width 31. Antennal segments I–VIII length (width) as follows: 35(33); 46(28); 75(26); 69(26); 68(25); 50(15); 35(14); 45(11). Postocular setae 66; antennal terminal setae 69; pronotum anteroangular setae 75, anteromarginal setae 41, midlateral setae 65, posteroangular setae 84, epimeral setae 56; tergum IX B1 setae 105, B2 setae 96.

Macropterous male: Color and structure similar to macropterous female. However, body smaller, fore tarsus tooth more developed, and fewer discal setae on sternites III -VII each with 2–4.

Measurements, paratype male in micrometres. Total body length 1438; head L/W (181/158); eyes length 69, diameter of anterior (posterior) ocelli 19 (13), distance of posterior oceelli 13; pronotum median length 94, width 213; tube length 100, tube maximum width 59, apex width 28. Antennal segments I–VIII length (width) as follows: 34(31); 44(26); 69(25); 76(25); 76(23); 59(18); 39(18); 45(11). Postocular setae 71; antennal terminal setae 60; pronotum anteroangular setae 59, midlateral setae 65, posteroangular setae 64, epimeral setae 79; forewing sub-basal setae B1 56, B2 64, B3 61; tergum IX B1 setae 84.

Material examined. Holotype female (macropterous), China, Hainan Province, Ledong, Jianfengling National Nature Reserve (18°44'24"N, 108°51'48"E), 31.x.1986, Xiaoli Tong.

Paratypes: China, Yunnan Province, Mengla (21°27'N, 101°34'E), 1 female (macropterous), 9.iv.1992; Hainan Province, Wuzhishan National Nature Reserve (18°54'N, 109°40'E), 2 male (micropterous), 7.xii.2008, Wang Jun; Diaoluoshan Nature Reserve (18°43'N, 109°52'E), 1 male (apterous), 1 female (micropterous), 5.xii.2008, Wang Jun.

Distribution. China (Yunnan, Hainan).

Etymology. The Latin word palmatus means palmate referring to the pronotal anteromarginal setae well developed, expanded as palmate at apex.

Remarks. The new species can be easily distinguished from the other species of this genus by the pronotal anteromarginal setae well developed, expanded strongly at apex and the mesopresternum reduced to pair of triangles laterally

Figures

FIGURES 1 – 6. Terthrothrips palmatus sp. nov. (1) head; (2) antennae segment I – VII; (3) antennae segment VIII; (4) prothorax (dashed line showed ferna); (5) pelta; (6) mesonotum and metanotum.