Mesothrips vernicia, 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/4DEE6509-DB4E-4A71-8D2A-E233B77B6E4A |
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taxon LSID |
lsid:zoobank.org:act:4DEE6509-DB4E-4A71-8D2A-E233B77B6E4A |
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treatment provided by |
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scientific name |
Mesothrips vernicia |
| status |
sp. nov. |
Mesothrips vernicia sp. nov.
Figs 4 View Figures 2–7 , 9 View Figures 8–13 , 12 View Figures 8–13 , 21 View Figures 14–25 , 25 View Figures 14–25
Material examined.
Holotype, ♀, China, Sichuan, Guangyuan, on leaves of Vernicia sp. [ Euphorbiaceae ], 07.viii.2018, Lihong Dang, Yang Hu and Danle Xie (SNUT); paratypes, 2♀ 3♂, with same data as holotype (SNUT); ♀, Hubei, Luotian , on leaves of unknown tree, 03.vii.2014, Lixin Su (SNUT).
Description.
Holotype. Female macroptera. Body brown; all femora and tibiae brown, fore tarsi clear yellow, mid and hind tarsi brownish, slightly lighter than tibiae; antennal segments I and II brown, III-VI uniformly yellow, VII yellow on basal 2/3, and light brown on apical 1/3, VIII lightly brown (Fig. 9 View Figures 8–13 ); major setae pale; fore wing slightly greyish.
Head. Head ~ 1.5 × as long as wide (Fig. 4 View Figures 2–7 ), constricted at base; postocular setae blunt, ~ 1/2 length of eyes (Fig. 4 View Figures 2–7 ); eyes longer ventrally than dorsally; maxillary stylets V-shaped, retracted to median of head; mouth cone long, reaching to ferna. Antennae slender, segment III ~ 3.2 × as long as apical width; III with two sense cones, IV with four major sense cones, VIII broadly connected with VII (Fig. 9 View Figures 8–13 ).
Thorax. Pronotum with five pairs of blunt setae, am, aa and pa equal in length (Fig. 4 View Figures 2–7 ), epim and pa longer and equal in length; surface almost smooth, with weak sculpture near margins. All legs slender, fore tarsal tooth absent (Fig. 12 View Figures 8–13 ). Fore wing with three blunt sub-basal setae arising in straight line, S1 and S2 equal in length, S3 longest, with seven duplicated cilia. Mesonotum transversely reticulate, lateral setae well-developed, blunt. Metanotum longitudinally reticulate, major setae slender and acute. Mesopresternum with paired lateral triangles, metathoracic sternopleural sutures absent.
Abdomen. Pelta broadly triangular, weakly reticulate, with pair of CPS; tergites II-VII with two major pairs of wing retaining setae, one pair of accessory sigmoid setae located anterior to first pair (Fig. 21 View Figures 14–25 ); tergite II with four pairs of lateral setae; tergite IX setae S1 and S2 longer than tube, acute at apex, 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 2620. Head length (maximum width) 260 (175); distance between maxillary stylets (across bridge) 120; eye length dorsally 90, ventrally 120; postocular setae length 45; antennal segments I-VIII length (width): 40 (30), 50 (35), 80 (25), 80 (30), 75 (30), 65 (20), 50 (20), 25 (15); sense cone on III length 20. Pronotum length (width) 170 (240); am?, aa 35, ml 25, epim 70, pa 55. Fore wing length 1000; sub-basal setae S1 45, S2 50, S3 95. Tergite IX setae S1 195, S2 185, S3 150; tube length 150, basal width 75, apical width 45; anal setae length 170.
Male macroptera. Similar to female in colour and sculpture; antennal segment VII largely brown; fore tarsal tooth absent; abdominal tergite IX setae S2 small and pointed (Fig. 25 View Figures 14–25 ); sternite VIII without pore plate.
Measurements (paratype male in μm). Body length 2100. Head length (maximum width) 240 (145); eye length dorsally 85, ventrally 85; postocular setae length 45. Pronotum length (width) 135 (185); am 25, aa 30, ml 20, epim 45, pa 25. Tergite IX setae S1 180, S2 15, S3 180; tube length 145; anal setae length 175.
Etymology.
The species epithet refers to the genus name of the host plant.
Comments. As indicated above, the relationships of this species remain far from clear. It is similar in structure to the other two new species but differs sharply from the other Mesothrips species in lacking a prominent fore tarsal tooth (Fig. 12 View Figures 8–13 ), and in the presence of only two sense cones on the third antennal segment (Fig. 9 View Figures 8–13 ).
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.