Gigantothrips tibetanus Dang & Mound, 2023
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publication ID |
https://dx.doi.org/10.3897/zookeys.1169.106733 |
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publication LSID |
lsid:zoobank.org:pub:71BD49D6-0E26-49A9-8E3D-FF2529BA0DDD |
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persistent identifier |
https://treatment.plazi.org/id/2F74AC2D-1EB4-41CD-A902-BBA508C537D3 |
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taxon LSID |
lsid:zoobank.org:act:2F74AC2D-1EB4-41CD-A902-BBA508C537D3 |
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treatment provided by |
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scientific name |
Gigantothrips tibetanus Dang & Mound |
| status |
sp. nov. |
Gigantothrips tibetanus Dang & Mound sp. nov.
Figs 10 View Figures 7–14 , 14 View Figures 7–14 , 16 View Figures 15–25 , 19 View Figures 15–25 , 21 View Figures 15–25 , 24 View Figures 15–25 , 29 View Figures 26–33
Material examined.
Holotype, ♀ (SUT), China, Tibet, Motuo County, on leaves of Ficus sp., 19.vii.2022, Y.Q. Li . Paratypes, 1♀ 1♂ (SUT), with the same data as holotype ; 1♀ (ANIC), with the same data as holotype .
Description.
Holotype. Female macroptera. Body brown. All femora brown, fore tibiae brownish yellow shaded with brown medially, mid and hind tibiae brown with yellowish brown at apical area, all tarsi yellowish brown. Antennae segments I-II brown, III yellow with shaded at apex, IV-V yellow with apices shaded brown, VI brown on apical half, yellow on basal half, VII-VIII brown. Wings strongly shaded with brown, body setae yellowish.
Head. Head elongate, about 2.0 times as long as wide (Fig. 10 View Figures 7–14 ); cheeks almost straight, each with 8-9 small and slender setae, dorsal surface weakly sculptured with transverse striae; ocelli area prominent, a pair of postocellar setae as long as postocular setae (Fig. 10 View Figures 7–14 ); eyes about third of head length, two pairs of postocular setae small and slender, about as long as cheek setae (Fig. 10 View Figures 7–14 ). Mouth-cone rounded, maxillary stylets rather short, not reaching the middle of head, close together. Antennal 8-segmented, intermedial segments elongate, III longer than IV, about 7.0 times as long as width, sensoria long and slender, III with 0+1, VI with 1+2 (Fig. 16 View Figures 15–25 ).
Thorax. Pronotum sculptured with irregular striae and reticulation, notopleural suture complete (Fig. 14 View Figures 7–14 ); only epim well developed, slightly blunt at apex, am no longer than discal setae, aa slightly bigger than am with several small setae around, pa slender, no longer than other discal setae, ml as long as aa (Fig. 14 View Figures 7–14 ); mesonotum and metanotum reticulation with internal fine markings, no developed setae on them, metanotal with four small setae around anterior angle (Fig. 19 View Figures 15–25 ), mesopresternum boat-shaped, metathoracic sternopleural sutures absent. All legs slender, fore tarsal absent. Fore wings broad, with 27-28 duplicated cilia, sub-basal setae almost equal length, acute or slightly blunt at apex.
Abdomen. Pelta triangular and reticulate with internal markings, with a pair of campaniform sensilla and 1-2 pairs of minute setae (Fig. 21 View Figures 15–25 ); abdominal tergites II-VI with two pairs of major sigmoid wing-retaining setae, and numerous accessory setae slightly curved or straight (Fig. 24 View Figures 15–25 ); VII with numerous small accessory setae laterally; S1-S3 on tergite IX short and pointed or slightly blunt at apex, about 0.1 times as long as tube (Fig. 32 View Figures 26–33 ); tube elongate with fine setae on the surface (Fig. 32 View Figures 26–33 ), 2.3 times as long as head, about 8.8 times as long as basal width, anal setae much shorter than tube; sternites II-VIII with some small setae not in lines.
Measurements (holotype female in microns). Body length 5880. Head length 450, width just behind eyes 235; eye length 155, postocular setae length S1 30, S2 40; postocellar setae length 35; the narrowest separation between maxillary stylets 25. Antenna length 1025, segments I-VIII length (widest) 60(50), 60(40), 240(35), 190(45), 175(40), 150(35), 90(25) and 70(20), sensoria on segment III length 65. Pronotum length 240, width 400, length of pronotal setae, am 20, aa 25, ml 25, epim 115, pa 30. Fore wing length 1900, sub-basal setae length, S1 80, S2 70, S3 100. Pelta length 170, basal width 290; tergite IX posteromarginal setae S1-S3, 130, 135, 120; tube length 1050, basal width 120, apical width 70; anal setae length 230.
Male macroptera. Similar to female; but smaller, fore tarsal tooth absent; abdominal tergite IX setae S2 short; sternite VIII with a pore plate, its anterior margin like ‘W’ shape and posterior margin straight and before posterior marginal setae (Fig. 29 View Figures 26–33 ), sternites III-VII with a worm-shape longitudinal laterally (Fig. 31 View Figures 26–33 ).
Measurements (paratype male in microns). Body length 5420. Head length 425, width just behind eyes 205; eye length 135, postocular setae length S1 30, S2 35; postocellar setae length 30; the narrowest separation between maxillary stylets 25. Antenna length 1050, segments I-VIII length (widest) 60(50), 60(35), 240(35), 185(45), 175(40), 135(40), 85(25) and 65(20), sensoria on segment III length 75. Pronotum length 250, width 365, length of pronotal setae, am 25, aa 25, ml 30, epim 110, pa 35. Fore wing length 1850, sub-basal setae length, S1 70, S2 75, S3 80. Pelta length 150, basal width 250; tergite IX posteromarginal setae S1-S3, 130, 50, 80; tube length 980, basal width 110, apical width 60; anal setae length 230.
Etymology.
This species name is composed of one Latin word based on the location of type specimens.
Comments.
This new species was taken on the leaves of a Ficus species and it is quite similar in body shape and colouration to G. gallicola taken on the leaf-galls of Sloanea sp. in Java. However, G. tibetanus sp. nov. can be distinguished by the slender cheek setae (Fig. 10 View Figures 7–14 ), tergites II-VI with two pairs of major sigmoid setae (Fig. 24 View Figures 15–25 ), pronotal aa, ml and pm small and slender, as long as discal setae (Fig. 14 View Figures 7–14 ), and metanotum with a pair of small setae located at anterior angles together with three tiny setae (Fig. 19 View Figures 15–25 ). In G. gallicola , cheeks have numerous spinous setae (Fig. 2 View Figures 1–6 ), tergites II-VI with 3-4 pairs of major sigmoid setae, pronotal aa, ml and pm developed, distinctly longer than discal setae (Fig. 2 View Figures 1–6 ), and metanotum anterior half with a pair of small setae and four pairs of tiny setae before them, also three pairs of tiny setae located at anterior angles. The species also have different colour pattern of antennae as indicated in couplet 7 of the key.
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