Lucasioides dianensis Li & Wang 2024, sp. nov.
Creators: name: Wang, Jin
name: Yao, Chong-Hui
name: Jiang, Chao
name: Li, Wei-Chun
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Agnaridae
Lucasioides
Lucasioides dianensis

description: 3.3. 2.Lucasioides dianensisLi & Wang sp. nov.
Figures 6 C, 8
Type material.
Holotype. CHINA • 1 ♂; Yunnan Province, Yuxi City, Tonghai County, Xiushan Historical and Cultural Park; 24.0978 ° N, 102.7446 ° E, el. 1989 m a. s. l; 2. viii. 2022; J. Wang, X. K. Hong leg. (DNA nos. XS 2201, Prep. slide no. L 22077). — Paratypes. • 2 ♂♂, 3 ♀♀; same data as the holotype (DNA nos. XS 2202 - XS 2206). CHINA • 2 ♂♂; Yunnan Province, Kunming City, Xishan Park, Taihuasi; 26.9615 ° N, 102.6303 ° E; el. 2149 m a. s. l.; 2. viii. 2021; J. Wang, X. G. Zeng, Z. L. Wan leg. (DNA nos. THS 2101, THS 2105, Prep. slide no. L 21053).
Diagnosis.
Pleopod 1 exopod with bilobed apex, and outer lobe twice as long as inner lobe, each lobe with one single spine.
Description.
Body length of males 6.0- 9.8 mm, of females 7.0- 9.5 mm. Color in alcohol blackish brown, dorsum granulated, bearing irregular white muscle spots (Fig. 6 C). Pereonite 1 sinuous on posterior margin of epimeron, postero-lateral corner acute. Noduli laterales as in Fig. 8 A. Telson triangular, posterior half conspicuously narrowed towards blunted apex, lateral margin concave; uropod exopodite about twice as long as basipodite (Figs 6 C, 8 A). — Cephalon with triangular median lobe, median lobe loner than lateral lobes (Figs 6 C, 8 A). Antennula with several aesthetascs on distal tip of third article (most aesthetascs lost before dissection) (Fig. 8 B). Antennal flagellum with second segment nearly twice as long as first one (Fig. 8 C). — Pereopod 1 with brush of long setae on carpus and merus (Fig. 8 D). Pereopod 7 ischium with deep depression on rostral surface, carpus expanded on dorsal margin (Fig. 8 E). — Pleopods 1-5 exopods with Protracheoniscus - type pseudotrachea (Fig. 8 F-J). — MALE: pleopod 1 exopod bilobed at posterior tip, outer lobe twice as long as inner lobe, and each lobe with spine, endopod with broad basal part, narrowed towards apex, posterior tip beak-shaped and bent outwards (Fig. 8 F); pleopod 2 exopod with a line of setae on posterior part of outer margin, endopod styliform, nearly as long as exopod (Fig. 8 G).
Etymology.
The new species is named after its type locality Yunnan Province, and “ dian ” is the shortened form of this province of China.
Remarks.
The new species is very similar to L. isseli (Arcangeli, 1927) in overall appearance and male pleopods, but it can be distinguished in having two setae at the distal apex of the male pleopod 1 exopod. Furthermore, the molecular data recognized both species as distinct taxonomic entities they can also be separated based on molecular analyses (Fig. 5).
description: Published as part of Wang, Jin, Yao, Chong-Hui, Jiang, Chao & Li, Wei-Chun, 2024, Integrative taxonomy reveals exceptional species diversity of Lucasioides from China (Isopoda: Oniscidea: Agnaridae), pp. 527-549 in Arthropod Systematics & amp; Phylogeny 82 on pages 527-549, DOI: 10.3897/asp.82.e113041