Paithrips pornthipae, Masumoto, Masami & Okajima, Shûji, 2012

Masumoto, Masami & Okajima, Shûji, 2012, Trichromothrips genus-group (Thysanoptera, Thripidae) from Vietnam, with descriptions of new species in both Okajimaella and Paithrips, Zootaxa 3313, pp. 1-11 : 8-9

Paithrips pornthipae sp. nov.

( Figs. 1 B, 2B, 2D & 4B)

Female macroptera. Distended body length 1.3–1.5 mm. Body indistinctly bicoloured; head pale brown, darker within ocellar triangle and in front of ocellar triangle, with basal fourth of dorsal surface pale; antennal segment I brown, II brown with distal half yellowish, III– IV yellow, V yellowish with basal third brown, VI–VIII brown; pronotum to metanotum pale, slightly shaded at mesonotum and metascutum; abdomen yellowish brown to brown, gradually darkened toward segment X, or almost uniformly brownish yellow; fore wings slightly shaded with basal fourth slightly pale, scale slightly shaded; all legs yellow; prominent body setae pale.

Head ( Fig. 1 B) 0.7–0.8 times as long as wide, slightly sculptured with transverse striae on basal third of dorsal surface laterally, smooth medially; ocellar setae II much longer than III, reaching posterior margin of hind ocelli. Antennal segment VI ( Fig. 2 B) the longest. Antennal segments I to VIII ratio length/width as followings: 0.8–1.0, 1.1–1.2, 2.1–2.4, 2.1–2.6, 2.0–2.7, 3.0–3.5, 1.3–1.7, 3.0–3.5.

Pronotum ( Fig. 1 B) 0.6–0.7 times as long as wide, distinctly eroded at anterior margin, with 23–33 discal setae; two or three pairs of anteromarginal setae much longer than discal setae laterally, S2 setae the longest and 0.5–0.6 times as long as pronotal median length; posteroangular setae I 0.6–0.7 times as long as pronotal median length and slightly longer than setae II; posteromarginal setae three to five pairs, setae I the longest, about 1.5–2 times as long as other setae, 0.6–0.8 times as long as pronotal median length. Mesonotum ( Fig. 2 D) without campaniform sensilla anteromedially. Fore wings costal vein with 22–27 setae, second vein with 13–16 setae; clavus with 4 (rarely 3) veinal setae and 1 discal setae.

Abdominal tergites II–VIII sculptured with anastomosing striae laterally and a few striae at anterior half between S2 setae; tergites V–VIII with S4 setae minute; tergite IX with SS2 setae ( Fig. 4 B). Ovipositor 1.3–1.5 times as long as pronotal median length.

Measurements (holotype female in microns). Distended body length 1275. Head length 83, across cheeks 108; compound eyes dorsal length 63, width 40; ocellar setae II length 52; ocellar setae III length (interval) 28 (10). Pronotum median length (width) 95 (153); anteromarginal setae I length 48, setae II length 50; posteroangular setae I length 59, setae II length 63; posteromarginal setae I length 55. Metascutum median length 83; median setae length 25. Fore wings length 600. Ovipositor 143. Antennal segments I to VII length (width) as followings: 23 (25), 29 (25), 38 (18), 40 (18), 35 (18), 50 (15), 13 (8), 15 (5).

Male. unknown.

Type series. Holotype female, Vietnam, Lam Dong Province, Bao Loc, Dam Bri, on bamboo, 27.xii.2001, S. Okajima. Paratypes: 1 female, same place and plant as holotype, 26.xii.2001, S. Okajima. 1 female, same place, on grass, 26.xii.2001, S. Okajima. 3 females, same place and plant as holotype, 28.xii.2001, S. Okajima.

Comments. This species can be distinguished easily by the pronotum having the anterior margin strongly concave.

Etymology. Dedicated to one of the authors of this genus, Miss. Pornthip Jangvitaya.

Figures

FIGURE 1. Head & pronotum, female: (A) Okajimaella nonakai; (B) Paithrips pornthipae.

FIGURE 2. Female. A-B, antennae, right: (A) Okajimaella nonakai; (B) Paithrips pornthipae. C-D, meso- and metanota: (C) Okajimaella nonakai; (D) Paithrips pornthipae.

FIGURE 4. Abdominal tergites VIII-X, female: (A) Okajimaella nonakai; (B) Paithrips pornthipae.