Mesothrips longistylus, Dang & Tong & Mound, 2024
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publication ID |
https://dx.doi.org/10.3897/zookeys.1196.118131 |
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publication LSID |
lsid:zoobank.org:pub:C1E809C2-1B1B-4AD0-8A2A-60836D2DD252 |
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persistent identifier |
https://treatment.plazi.org/id/1DB00123-0CA9-419D-84C7-D65FFB5B33A7 |
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taxon LSID |
lsid:zoobank.org:act:1DB00123-0CA9-419D-84C7-D65FFB5B33A7 |
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treatment provided by |
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scientific name |
Mesothrips longistylus |
| status |
sp. nov. |
Mesothrips longistylus sp. nov.
Figs 2 View Figures 2–7 , 8 View Figures 8–13 , 15-17 View Figures 14–25 , 20 View Figures 14–25 , 24 View Figures 14–25
Material examined.
Holotype, ♀, China, Sichuan, Ganzi , on leaves of unknown plant, 27.vii. 2013, Jianfeng Wang (SNUT); paratypes, 4♀ 3♂, with same data as holotype (SNUT).
Description. Holotype. Female macroptera. Body brown; all femora and tibiae brown, all tarsi yellowish brown, slightly lighter than tibiae; antennal segments I and II brown, III clear yellow, IV-VI yellow but shaded on apical half, VII-VIII brown (Fig. 8 View Figures 8–13 ); major setae pale; fore wing pale.
Head. Head ~ 1.4 × as long as wide (Fig. 2 View Figures 2–7 ), constricted at base; postocular setae slightly blunt, shorter than eyes (Fig. 2 View Figures 2–7 ); eyes equal in length ventrally and dorsally; maxillary stylets parallel medially with transverse maxillary bridge, elongate and at full retraction extending to postocular setae (Fig. 2 View Figures 2–7 ); mouth cone long, reaching to ferna. Antennal segments broad (Fig. 8 View Figures 8–13 ), segment III ~ 2.1 × as long as apical width; III with three sense cones, IV with four major sense cones, VIII broadly connected with VII.
Thorax. Pronotum with five pairs of well-developed setae, am, aa and ml blunt at apex (Fig. 2 View Figures 2–7 ), epim and pa longer and equal in length, slightly expanded at apex; surface almost smooth, with weak sculpture near margins. All legs slender, fore tarsal tooth tiny, visible only when tarsi rotated. Fore wing with three sub-basal setae arising in straight line (Fig. 20 View Figures 14–25 ), S1 and S2 equal in length, slightly expanded at apex, S3 longest, acute at apex, with 9-12 duplicated cilia. Mesonotum transversely reticulate, lateral setae well-developed, blunt (Fig. 15 View Figures 14–25 ). Metanotum longitudinally reticulate, major setae slender and acute (Fig. 15 View Figures 14–25 ). Mesopresternum with paired lateral triangles, metathoracic sternopleural sutures absent.
Abdomen. Pelta broadly triangular, weakly reticulate, with pair of CPS (Fig. 16 View Figures 14–25 ); tergites II-VII with two pairs of major wing retaining setae, one pair of accessory sigmoid setae located anterior to first pair (Fig. 17 View Figures 14–25 ); tergite II with eight pairs of lateral setae; tergite IX setae S1 and S2 longer than tube, acute at apex (Fig. 17 View Figures 14–25 ), S3 approx. as long as tube, acute at apex; tube shorter than head, anal setae approx. as long as tube.
Measurements (holotype female in μm). Body length 2600. Head length (maximum width) 275 (195); distance between maxillary stylets (across bridge) 50; postocular setae length 70; antennal segments I-VIII length (width): 45 (35), 55 (30), 75 (35), 75 (40), 70 (30), 65 (30), 60 (25), 35 (20); sense cone on III length 15. Pronotum length (width) 170 (275); am 45, aa 35, ml?, epim 90, pa 90. Fore wing length 1140; sub-basal setae S1 60, S2 85, S3 120. Tergite IX setae S1 185, S2 190, S3 140; tube length 170, basal width 75, apical width 50; anal setae length 170.
Male macroptera. Similar to female in colour and sculpture; postocular setae slightly shorter than eyes, slightly blunt at apex; fore tarsal tooth scarcely visible; abdominal tergite IX setae S2 small and pointed (Fig. 24 View Figures 14–25 ); sternite VIII without pore plate.
Measurements (paratype male in μm). Body length 2240. Head length (maximum width) 270 (200); postocular setae length 90. Pronotum length (width) 170 (270); am 53, aa 28, ml 75, epim 75, pa 85. Tergite IX setae S1 180, S2 20, S3 180; tube length 165; anal setae length 175.
Etymology.
The species epithet refers to the elongate and parallel maxillary stylets.
Comments.
The elongate and parallel maxillary stylets of this new species are unique in Mesothrips , most of which species have the stylets wide apart and arranged in a V-shape.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.