Trichromothrips antidesmae, Li & Li & Zhang, 2019

Li, Yajin, Li, Zhengyue & Zhang, Hongrui, 2019, Trichromothrips genus-group (Thysanoptera, Thripidae) from China, with descriptions of three new species and ten new records, Zootaxa 4544 (1), pp. 79-92 : 81-82

Trichromothrips antidesmae sp.n.

( Figs 10 , 27–30 )

Female macroptera. Body and legs yellow( Fig. 10 ), head and pronotum with dark lateral margin( Fig. 27 ); antennal segments I–II brown, III–V yellow with the apex brown, VI–VII brown, VIII pale brown( Fig. 30 ); fore wing brown with apex pale, clavus brown( Fig. 29 ).

Head ( Fig. 27 ) without constriction behind eyes; ocellar setae III situated at tangent of hind ocelli posterior margin; five pairs of postocular setae present, I longest, III minute. Antennae ( Fig. 30 ) segments II–VI with microtrichia, VIII slightly longer than VII. Pronotum ( Fig. 27 ) smooth with some transverse striae on lateral anterior margin and near posterior margin; two pairs of posteroangular setae and two pairs of posteromarginal setae present; prosternal ferna divided medially. Mesonotum ( Fig. 27 ) anterior smooth with some transverse striate sculpture medially, CPS absent anteromedially; median pair of setae near posterior margin. Metascutum smooth medially but sculptured longitudinally at each side; CPS absent; median pair of setae close to anterior margin ( Fig. 27 ). Metaepimeron with two setae. Mesosternum with sternopleural sutures; only mesothoracic endofurca present. Fore wing first vein usually have 6 basal setae and 2 distal setae, second vein with 14 setae; clavus usually with 4 marginal setae and 1 discal seta ( Fig. 29 ).

Abdominal tergites with transverse striae laterally, tergites II–VII with three setae (S3 to S5 setae) arranged in a straight line along lateral margin; tergite IX without CPS; sternites without discal setae, II with two pairs of posteromarginal setae, III–VII each with 3 pairs of posteromarginal setae, all marginal setae inserted on posterior margin.

Measurements (holotype female in microns). Distended body length 1046. Head length 86, width across cheeks 128; width across eyes129; ocellar setae III length 20. Pronotum median length 89, width 161; posteroangular setae length, inner 52, outer 44; posteromarginal setae I length 24. Metascutum median setae length 18. Fore wings 673. Antennal segments I to VIII length as follows: 19, 29, 38, 55, 40, 49, 7, 14.

Male macroptera. General structure and colour similar to female. Abdominal tergite IX with a pair of long posteromarginal drepanae; sternites without pore plates.

Measurements (paratype male in microns). Distended body length 1034. Head length 130, width across cheeks 125; width across eyes123; ocellar setae III length 31. Pronotum median length 96, width 150; posteroangular setae length, inner 47, outer 43; posteromarginal setae I length 22. Metascutum median setae length 20. Fore wings 600. Antennal segments I to VIII length as follows: 20, 28, 46, 52, 37, 52, 9, 20.

Specimens studied. Holotype female, CHINA, Yunnan, Menglun Town, Xishuangbanna Tropical Botanic Garden, from Antidesma fordii , 24.x.2017 (Hui Liu), in collection of Yunnan Agricultural University , Kunming.

Paratype: 1male, same data as holotype .

Etymology. In reference to the host plant of this species.

Comments. The head and pronotum of this species with dark lateral margin is similar to bilongilineatus, priesneri and trachelospermi, but the meso-, metanotum and abdominal tergite IX without CPS, marginal setae situated on posterior margin on sternite VII are different from bilongilineatus. The two pairs of posteromarginal setae on sternite II, and the absence in males of sternal pore plates also distinguishes this species from the Indian species priesneri and Chinese species trachelospermi ( Bhatti 2000, Zhang &Tong 1996). In addition, the presence of two microtrichial rows on the dorsal surface of antennal segment II is unusual among Trichromothrips species.

Figures

FIGURES 1–12. Trichromothrips genus-group species. Trichromothrips species 1–11: (1) T. moundi female. (2) T. moundi male. (3) T. albus. female (4) T. guizhouensis sp.n. female (5) T. indicus female. (6) T. elegans female. (7) T. elegans male. (8) T. trifasciatus female. (9) T. crispator female. (10) T. antidesmae sp.n. female. (11) T. assamensis female. (12) Trachynotothrips striatus female.

FIGURES 22–30. Trichromothrips species. T. guizhouensis sp.n. 22–26: (22) Head and pronotum. (23) Abdominal tergites III–X. (24) Mesonotum and metanotum. (25) Fore wing. (26) Antennae. T. antidesmae sp.n. 27–30: (27) Head and pronotum. (28) Male abdominal tergites IX–X. (29) Fore wing. (30) Antennae.