Lucasioides subcurvatus Li & Wang, 2024

Wang, Jin, Yao, Chong-Hui, Jiang, Chao & Li, Wei-Chun, 2024, Integrative taxonomy reveals exceptional species diversity of Lucasioides from China (Isopoda: Oniscidea: Agnaridae), Arthropod Systematics & amp; Phylogeny 82, pp. 527-549 : 527-549

publication ID	https://doi.org/ 10.3897/asp.82.e113041
publication LSID	lsid:zoobank.org:pub:B2966C0A-75B7-4B73-A45C-0A2EFB159715
DOI	https://doi.org/10.5281/zenodo.12627278
persistent identifier	https://treatment.plazi.org/id/15D7C52A-0685-5BD7-A1D5-108A33FEF84F
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Lucasioides subcurvatus Li & Wang
status	sp. nov.

Treatment

3.3. 7. Lucasioides subcurvatus Li & Wang sp. nov.

Figures 6 I View Figure 6 , 13 View Figure 13

Type material.

Holotype. CHINA • 1 ♂; Sichuan Province, Leshan City, Mabian Yi Autonomous County, Minjian Town, Zhang Youfang Village ; 28.8439 ° N, 103.5475 ° E, el. 600 m a. s. l.; 12. viii. 2012; W. C. Li leg. (DNA no. DFD 2006 , Prep. slide nos. L 2073 - L 2075 ) GoogleMaps . — Paratypes. • 1 ♂, 3 ♀♀; same data as the holotype (DNA nos. DFD 2003 b, DFD 2003 - DFD 2005 ) GoogleMaps . CHINA • 1 ♂, Guizhou Province, Bijie City, Qianxi County, Qianxi Railway Station ; 26.9937 ° N, 106.0413 ° E, el. 1221 m a. s. l.; 4. viii. 2020; X. G. Zeng, J. B. Yang leg. (DNA no. GQX 2204 , Prep. slide no. L 22098 ) GoogleMaps .

Diagnosis.

Pereonite 1 with right-angled postero-lateral corner; pleopod 1 exopod slightly concave, forming two inconspicuous lobes.

Description.

Body length of males 6.1-6.9 mm, of females 5.2-6.0 mm. Color in alcohol blackish brown, dorsum slightly granulated, and with irregular white muscle spots (Fig. 6 I View Figure 6 ). Pereonite 1 slightly sinuous on posterior margin of epimeron, postero-lateral corner nearly right-angled. Noduli laterales as in Fig. 13 A View Figure 13 . Telson triangular, width almost as long as length, lateral margin slightly concave, posterior apex blunted; uropod exopodite about two and half times as long as basipodite (Figs 6 I View Figure 6 , 13 A View Figure 13 ). — Cephalon with arched median lobe, median lobe nearly as long as lateral lobes (Figs 6 I View Figure 6 and 13 A View Figure 13 ). Antennula with several aesthetascs on distal tip of third article (Fig. 13 B View Figure 13 ). Antennal flagellum with first segment about three fifths as long as second one (Fig. 13 C View Figure 13 ). — Pereopod 1 with brush of long setae on carpus and merus (Fig. 13 D View Figure 13 ). Pereopod 7 ischium with deep depression on rostral surface, carpus slightly expanded near middle on dorsal margin (Fig. 13 E View Figure 13 ). — Pleopods 1-5 exopods with Protracheoniscus - type pseudotrachea (Fig. 13 F-J View Figure 13 ). — MALE: pleopod 1 exopod slightly concave at posterior tip, forming two inconspicuous lobes, endopod with broad basal part, narrowed towards beak-shaped posterior tip (Fig. 13 F View Figure 13 ); pleopod 2 endopod styliform, a bit longer than exopod (Fig. 13 G View Figure 13 ).

Etymology.

Latin “ subcurvatus ” = subcurved. The new species name refers to the shape of pleopod 1 exopod with a subcurved apex.

Remarks.

The new species is very similar to L. formosus sp. nov. in having the pleopod 1 exopod slightly concave and forming two inconspicuous lobes. But it is easy to be distinguished in having the noduli laterales on pereonites 2-4 shifted from lateral margins than the noduli laterales on pereonites 1, 5-7 (Fig. 13 A View Figure 13 ). In L. formosus , the noduli laterales on pereonites 1-4 are much farther from lateral margin than noduli laterales of pereonites 5-7 (Fig. 11 A View Figure 11 ). Furthermore, the two species can also be separated based on morphometric evidence and molecular analyses (Figs 3 View Figure 3 , 5 View Figure 5 ).