Vetosmylus maculosus, Ma & Shih & Ren & Wang, 2020
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publication ID |
https://doi.org/ 10.4202/app.00691.2019 |
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persistent identifier |
https://treatment.plazi.org/id/03D48787-3264-FFDB-FFFE-B59CFA507E8C |
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treatment provided by |
Felipe |
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scientific name |
Vetosmylus maculosus |
| status |
sp. nov. |
Vetosmylus maculosus sp. nov.
Figs. 2 View Fig , 3 View Fig .
Zoobank LSID: urn:lsid:zoobank.org:act:0AF432C0-B8AB-4663-BC27-8B1A1B686044
Etymology: From Latin maculosus , spotted; refers to many brown round spots on forewings of the new species.
Type material: Holotype: CNU-NEU-NN2019002P/C, a completely preserved specimen with three wings overlapped, one hind wing spreaded with visible structures ( Figs. 2A View Fig 1 View Fig , A 2 View Fig ). Paratype: CNU-NEU-NN2019003P/C, a completely preserved specimen with clear structure of genitalia ( Figs. 3A View Fig 1 View Fig , A 2 View Fig ) from the type locality and horizon.
Type locality: Daohugou Village , Shantou Township, Ningcheng County, Inner Mongolia, China .
Type horizon: Jiulongshan Formation, Aalenian/Bajocian boundary, Middle Jurassic.
Diagnosis.—Forewing with many brown round spots; RP branches numerous, more than 18; hind wing with numerous radial cross-veins, arranged regularly and forming 3–4 rows of gradate cross-veins; radial region with slender cells.
Description.—Compound eyes large and round; antennae linear, clearly segmented. Forewing about 27.88 mm long as preserved, 9.80 mm wide. Hind wing about 24.63 mm long as preserved, 9.18 mm wide ( Fig. 2 View Fig ).
Forewing ( Fig. 2A View Fig 3 View Fig ): Pterostigma fuscous; trichosors well-developed along the entire margin; subcostal veinlets forked distally; areas between Sc and RA, RA and RP equally spaced; cross-veins sc-ra single and close to the wing base; cross-veins in radial sector arranged irregularly, the outer gradate series residually present (putatively due to the poor preservation); MA and MP forming some simple pectinate branches in distal; CuP shorter than CuA, pectinately branched approximately at middle of the wing, with 10 pectinate branches; A1 and A2 well-developed; A1 with 8 pectinate branches; A2 with at least 6 branches; A3 incompletely preserved.
Hind wing ( Fig. 2A View Fig 4): Only with several sporadic fuscous spots; only a middle nygma distinct; subcostal veinlets simple; presence of a longer curved vein fused with RP1; M forked close to the separation of RP1 from RA; the region between MA and MP dilated visibly, only a single row of cells present.
Female genitalia ( Fig. 2A View Fig 3 View Fig , A 4): Tergite 8 large, approximately quadrate; tergite 9 narrow, gonocoxite 9 stout and knife-shaped, slightly bent at the middle; gonostylus 9 short and attached to gonocoxite 9 distad; ectoproct large, callus cerci round.
Remarks.— V. maculosus can be easily distinguished from V. tentus by the presence of the numerous fuscous spots in forewing. Besides, the cross-veins in the radial sector of the two species are distinctly different, i.e., presence of multiple gradate series in V. maculosus vs absence of gradate series in V. tentus .
Stratigraphic and geographic range.— Jiulongshan Formation, Middle Jurassic; Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China.
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