Layahima zhitengi, Zheng & Tu & Badano & Liu, 2025
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publication ID |
https://doi.org/10.3897/asp.83.e145082 |
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publication LSID |
lsid:zoobank.org:pub:B2390F50-B482-4695-8835-7C10CC62C1BD |
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DOI |
https://doi.org/10.5281/zenodo.17380895 |
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persistent identifier |
https://treatment.plazi.org/id/911369DA-6B0D-56BE-B6BB-2699443286C4 |
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treatment provided by |
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scientific name |
Layahima zhitengi |
| status |
sp. nov. |
Layahima zhitengi sp. nov.
Figures 2 F View Figure 2 , 17 View Figure 17
Diagnosis.
Body generally dark grey. Posterior margin of vertex and postgena orange. Pronotum with a pair of “ F ” shaped pale yellowish markings. Mesonotum with a few pale yellowish markings (Fig. 17 C View Figure 17 ). Forewings long, narrow, nearly four times as long as maximum width, with dense indistinct markings (Figs 2 F View Figure 2 , 17 A View Figure 17 ). Abdomen mostly dark grey, terga 1 and 3–5 each medially with a pale yellowish marking (Fig. 2 F View Figure 2 ). Female pregenital plate shaped as a sclerotized cone; gonocoxites 8 wide, thumb-shaped (Fig. 2 D, E View Figure 2 ).
Description.
Size. Head width: 3.08 mm; forewing length: 34.23 mm; hindwing length: 34.42 mm. — Head. Mostly dark grey. Vertex dark grey, posterior margin orange. Postgena orange. Antenna mostly black. Frons with a pair of indistinct curved pale yellowish markings. Clypeus anteriorly dark brown, posteriorly pale. Labrum yellowish brown, with some yellowish-brown setae. Maxillary and labial palpus yellowish brown. Mandibles pale yellowish brown with distal half dark reddish brown (Fig. 17 B, C View Figure 17 ). — Thorax. Pronotum mostly dark grey, with a pair of “ F ” shaped pale yellowish markings, with some dark and pale setae. Mesoprescutum and mesoscutellum mostly dark grey; mesonotum with a few pale yellowish markings. Metanotum and metascutellum mostly dark grey. Pleurae dark grey (Fig. 17 C View Figure 17 ). — Legs. Short, as long as thorax at most, with many black and pale setae. All tibial spurs slightly curved; tarsomere 1 basally pale yellow with distally dark brown, tarsomeres 1–4 generally black, tarsomere 5 pale yellow with distally black, nearly as long as entire length of tarsomeres 2–4; pretarsal claws curved, pale yellowish brown. Foreleg: Coxa yellowish brown; femur mostly dark brown; tibia black, basally and medially with two pale yellow markings; tibial spurs reaching tip of tarsomere 2. Midleg: Coxa pale yellowish brown with a black spot; femur mostly dark brown; tibia black, basally and medially with two pale yellow markings; tibial spurs reaching base of tarsomere 3. Hind leg: Coxa pale yellowish brown with a black spot, femur mostly dark brown; tibia black, basally and medially with two pale yellowish markings; tibial spurs reaching base of tarsomere 2; tarsomere 1 longer than that of fore- and midleg (Fig. 17 A View Figure 17 ). — Wings. Long, narrow. Banksian lines absent. Pterostigma pale. Forewing nearly four times as long as maximum width, with dense indistinct markings; costal space with a dark brown spot proximal to pterostigma; costal crossveins generally simple on nearly basal half, while nearly distal half each connected by a short oblique vein; RP originates proximally to MP fork; four to five presectoral crossveins present, almost with biareolate cells; RP with 10 branches. Hindwing nearly 3.5 times as long as maximum width; rhegma indistinct; presectoral area with only one crossvein; RP originates anteriorly to MP fork (Figs 2 F View Figure 2 , 17 A View Figure 17 ). — Abdomen. Mostly dark grey, terga 1 and 3–5 each medially with a pale yellowish marking (Fig. 2 F View Figure 2 ). — Male genitalia. Unknown. — Female genitalia. Pregenital plate shaped as a vertical prominence. Gonocoxites 8 wide, thumb-shape; gonapophyses 8 indistinct and rounded. Gonocoxites 9 with many tapered stout setae, slightly curved. Ectoproct rounded on distal margin (Fig. 2 D, E View Figure 2 ).
Type material.
Holotype ♀, CHINA: Yunnan, Nujiang, Fugong County [福贡县], Haizha [害扎], 1200 m, 2. VII. 2022, Zhiteng Chen ( IZCAS) .
Etymology.
The new species is dedicated to the plecopteran researcher Dr. Zhiteng Chen (陈志腾), who donated us the holotype of this new species and a larva of L. lhoba .
Distribution.
China ( Yunnan) (Fig. 18 View Figure 18 ).
Remarks.
This new species is similar to L. valida ( Yang, 1997) , which occurs in South and Central China. Both species are dark grey and have long, narrow wings. However, L. zhitengi sp. nov., is characterized by orange posterior vertex, mesonotum with few pale yellowish markings, abdomen with some pale yellowish spots, female pregenital plate shaped as a vertical prominence, and female gonocoxites 8 thumb-shaped; while L. valida differs in the entirely dark grey vertex, mesonotum, and abdomen, female pregenital plate shaped as a pair of strongly sclerotized subtriangular plates, and female gonocoxites 8 narrowed and digitiform.
| IZCAS |
Institute of Zoology, Chinese Academy of Sciences |
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.
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SubFamily |
Dendroleontinae |
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Acanthoplectrini |
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