Ligidium alpinum Li & Jiang, 2025
|
publication ID |
https://doi.org/10.3897/zse.101.148504 |
|
publication LSID |
lsid:zoobank.org:pub:F5710833-8C0D-4E5B-93D0-ECB117404C0C |
|
DOI |
https://doi.org/10.5281/zenodo.15856273 |
|
persistent identifier |
https://treatment.plazi.org/id/FF224B45-5451-56CB-A978-8CC195FFB029 |
|
treatment provided by |
|
|
scientific name |
Ligidium alpinum Li & Jiang |
| status |
sp. nov. |
Ligidium alpinum Li & Jiang sp. nov.
Figs 1 View Figure 1 , 2 View Figure 2 , 3 A View Figure 3
Type material.
Holotype. China • male, Jiangxi Province, Pingxiang City, Wugong Mountain (27°27'N, 114°10'E), alt. 1900 m, 16 September 2012; Weichun Li leg., prep. slide nos. L 16002 - L 16009. GoogleMaps
Paratypes. One female, same collection data as holotype, DNA nos. WGS 2008 GoogleMaps .
Diagnosis.
Male pleopod 2 endopod has a dagger-shaped distal part and bears four small spines on inner margin.
Description.
Maximum length: males 6.0 mm and females 5.5 mm.
Body elliptic, light grey, and bears pale muscle spots on dorsal surface; pereonite 1 without setae on posterior margin (Fig. 1 View Figure 1 ).
Antennula with four aesthetascs at apex of third article (Fig. 2 A View Figure 2 ).
Antenna with flagellum composed of thirteen articles (Fig. 2 B View Figure 2 ).
Mandible with three-toothed incisor in left mandible, lacinia mobilis three-toothed, three penicils between lacinia mobilis and molar process (Fig. 2 C View Figure 2 ); right mandible with three-toothed incisor, lacinia mobilis four-toothed, three penicils between lacinia mobilis and molar process (Fig. 2 D View Figure 2 ).
Maxillule with three stout penicils and single small seta near distal margin of inner lobe; outer lobe with nine apical teeth of various sizes (Fig. 2 E View Figure 2 ).
Maxilla distally divided into two parts with blunted rounded apices, large lappet with two elongated setose penicils at subapical part, small lappet with three elongated setose penicils near distal margin (Fig. 2 F View Figure 2 ).
Maxilliped endite rectangular, distal margin with two teeth at inner distal angle; palp with seven setae (Fig. 2 G View Figure 2 ).
Pereopod 1 basis with single distal seta on sternal face and four setae on ternal face; ischium with two setae on sternal face and concave on ternal face; merus with twelve setae on sternal face and single seta at distal angle on ternal face; carpus with seven setae on sternal face and three setae at distal angle on ternal face; propodus bears three small setae on sternal face and single small seta at outer distal tip on ternal face (Fig. 2 H View Figure 2 ). Pereopod 7 basis bears three setae on sternal face; ischium narrow basally, broadened towards subtip, then narrowed towards distal tip, bears five setae on sternal face and four setae near tip on ternal face; merus with six setae on sternal face and two setae at distal angle on ternal face; carpus bears seven setae on sternal face and four setae at distal angle on ternal face; propodus bears three small setae on sternal face (Fig. 2 I View Figure 2 ).
Male pleopod 1 exopod with blunted distal apex and bears four long setae; endopod with triangular projection, distal apex with three long setae (Fig. 2 J, K View Figure 2 ). Male pleopod 2 exopod subrectangular; endopod long and thin, distal part dagger-shaped, inner margin with four small spines (Fig. 2 L View Figure 2 ).
Etymology.
Latin: alpinus = alpine. The new species name refers to its type locality located near the top of Wugong Mountain, the second-highest mountain in east China.
Distribution.
This species is only known from Wugong Mountain, Pingxiang City, Jiangxi Province, China.
Natural history.
The habitat in which this species has been collected is near a stream. The vegetation of the collection site is composed of alpine meadows (Fig. 3 A View Figure 3 ).
Remarks.
This species is similar to L. hypnorum , L. acuminatum , and L. tridentatum by having a straight distal part of the male pleopod 2 endopod. It can be distinguished by the distal apex of the male pleopod 2 endopod with four small spines on inner margin (Fig. 2 L View Figure 2 ). In L. hypnorum and L. acuminatum , the male pleopod 2 endopod without spines ( Jackson 1923: fig. 4; Wang et al. 2022: fig. 10). In L. tridentatum , the inner margin of the male pleopod 2 endopod with three small spines at the subapical apex ( Wang et al. 2022: fig. 12). We provided additional molecular evidence to distinguish them. Every species was represented by a well-supported clade (Fig. 1 View Figure 1 ).
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.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
SubOrder |
Oniscidea |
|
Family |
|
|
Genus |