Hydatothrips longjingensis

Mirab-Balou, Majid, Hu, Qing-Ling, Feng, Ji-Nian & Chen, Xue-Xin, 2011, A new species of Sericothripinae from China (Thysanoptera: Thripidae), with two new synonyms and one new record, Zootaxa 3009, pp. 55-61 : 57

Hydatothrips longjingensis Mirab-balou & Chen, sp. n.

(Figs. 8–9, 17)

Female macroptera. Body brown to yellowish brown; antennal segments I, II and basal half of III–IV whitish yellow, V–VII grayish brown; legs brown to yellowish brown, hind tibia and tarsus yellow with brown medially on tibia; fore wings brown medially but lighter toward apex, with sub-basal pale area; abdominal terga I–IV grayish brown, tergum V yellowish brown, VI whitish yellow, VII–X brown; antecostal ridges on terga II–VII brown.

Head short, with dense transverse striae and wrinkles between them; occiput very short, with dense transverse striae, occipital apodeme not reaching posterior margin of eyes (Fig. 8); ocellar setae III situated inside of ocellar triangle, in front of posterior ocelli; maxillary palpi 3-segmented; mouth-cone long, reaching to posterior margin of pronotum. Antennae 7-segmented ( Fig. 17 ), with forked sense cones on antennal segments III and IV, segments II– VI covered with microtrichia on both side.

Pronotum reticulate outside of blotch, anteromarginal median setae wide apart; blotch dark brown with anterior and posterior margins concave, butterfly shaped (Fig. 8), median length about 0.56 of lateral length, covered with dense transverse striae, one pair of anteromarginal median setae, 2 pairs of anterior submarginal setae, and one pair of posteromarginal setae. Mesonotum and metanotum with dense striae and wrinkles. Fore wing longer than length of abdomen, about 1.6 times, first vein with about 21–25 setae, second vein with one distal seta (Fig. 9). Abdominal terga II–VII with dense rows of microtrichia on areas lateral to submedian setae, terga II–VII with posteromarginal comb lacking medially; tergum VIII posterior comb long and complete; terga II–VII with antecostal ridge; terga IV–VI with 6–7 lateral discal setae. Abdominal sterna without discal setae. Ovipositor well developed.

Male unknown.

Measurements (holotype female). Length (width). Body 870(330); head 95(180), compound eye 60(40); pronotum 100(220), blotch median length 30; forewing 810(40), hind wing 640(30); abdomen 480; ovipositor 250. Antennal segments I–VII: 26(30), 37(28), 75(20), 68(21), 54(20), 67(20) and 38(9).

Material studied. Holotype female: CHINA, Zhejiang Province Jiuxi, Hangzhou (30° 15' 19''N, 120° 10' 8"E, 18 m), from tea ( Camellia sinensis ), 27.iii.2010 (M. Mirab-balou). Paratype, 1 Ƥ, collected with holotype; both deposited in ZJUH.

Etymology. In reference to the Longjing tea (= Dragon Well tea) (it is a variety of green tea from Hangzhou, Zhejiang province, China).

Remarks. Amongst Hydatothrips species in China, only this new species and H. meriposa Wang have the antennae 7-segmented. The new species is distinguished from H. meriposa by the following characters: abdominal terga V–VI paler than other terga (tergum VI paler than other terga in H. meriposa ); forewing second vein with one distal seta (with 2 distal setae in H. meriposa ); antecostal ridges on terga II–VII brown (dark brown in H. meriposa ); legs mostly brown (yellow in H. meriposa ); body smaller (about 870 μm) than H. meriposa (about 1140 μm) ( Wang, 2007). The new species is also similar to H. noro Kudô (reported from Japan), but can be distinguished by the following characters: abdominal terga IV–VI with 6–7 lateral discal setae (7–13 in H. noro ); fore wing second vein with one distal seta (2 or 3 in H. noro ); antennal segment III whitish yellow at basal half and the rest brown (wholly pale yellow in H. noro ); body smaller (about 870 μm) than H. noro (about 1100–1300 μm) ( Kudô, 1997).

Figures

FIGURES 10 – 17. (10 – 15) S. houji: (10) abdominal sterna III – IV, (11) meso-metasternum, (12) microptera wing, (13) pore plates on sterna IV – VII (male), (14) antenna (female), (15) antenna (male). (16) H. abdominalis: antenna (female). (17) H. longjingensis sp. n.: antenna (Holotype) (Scale bar = 50 microns).