Lucasioides digitatus Li & Wang, 2024
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publication ID |
https://doi.org/ 10.3897/asp.82.e113041 |
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publication LSID |
lsid:zoobank.org:pub:B2966C0A-75B7-4B73-A45C-0A2EFB159715 |
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DOI |
https://doi.org/10.5281/zenodo.12627267 |
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persistent identifier |
https://treatment.plazi.org/id/A6901C4F-B84F-466A-9D22-DF698540BBF7 |
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taxon LSID |
lsid:zoobank.org:act:A6901C4F-B84F-466A-9D22-DF698540BBF7 |
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treatment provided by |
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scientific name |
Lucasioides digitatus Li & Wang |
| status |
sp. nov. |
3.3. 3. Lucasioides digitatus Li & Wang sp. nov.
Figures 6 D View Figure 6 , 9 View Figure 9
Type material.
Holotype. CHINA • 1 ♂; Jiangxi Province, Yichun City, Jingan County, Sanzhualun ; 29.0490 ° N, 115.2611 ° E, el. 220 m a. s. l.; 19. vii. 2012; W. C. Li leg. (DNA no. SZL 2002 , Prep. slide nos. L 17309 - L 17314 ) GoogleMaps . — Paratypes. • 3 ♀♀; same data as the holotype (DNA nos. SZL 2001 , SZL 2003 and SZL 2004 ) GoogleMaps .
Diagnosis.
Cephalon with arched median lobe; pereonite 1 with blunted postero-lateral corner; pleopod 1 exopod with finger-like outer lobe, inner lobe inconspicuous.
Description.
Body length of males 6.2 mm, of females 6.3-8.0 mm. Color in alcohol blackish brown or yellowish brown, dorsum granulated, bearing irregular white muscle spots (Fig. 6 D View Figure 6 ). Pereonite 1 sinuous on posterior margin of epimeron, postero-lateral corner blunted. Noduli laterales on pereonites as in Fig. 9 A View Figure 9 . Telson triangular, width about one and half times as long as length, lateral margin slightly concave, apex blunted round; uropod exopodite about twice as long as basipodite (Figs 6 D View Figure 6 , 9 A View Figure 9 ). — Cephalon with arched median lobe, median lobe nearly as long as lateral lobes (Figs 6 D View Figure 6 , 9 A View Figure 9 ). Antennula with several aesthetascs on distal tip and antero-lateral margins of third article (Fig. 9 B View Figure 9 ). Antennal flagellum with second segment twice as long as first one (Fig. 9 C View Figure 9 ). — Pereopod 1 with brush of long setae on carpus and merus (Fig. 9 D View Figure 9 ). Pereopod 7 ischium with deep depression on rostral surface, carpus slightly expanded near middle on dorsal margin (Fig. 9 E View Figure 9 ). — Pleopods 1-5 exopods with Protracheoniscus - type pseudotrachea (Fig. 9 F-J View Figure 9 ). — MALE: pleopod 1 exopod slightly concave at posterior margin, outer side with finger-like lobe, inner lobe inconspicuous, endopod with broad basal part, narrowed towards beak-shaped posterior tip (Fig. 9 F View Figure 9 ); pleopod 2 endopod styliform, nearly as long as exopod (Fig. 9 G View Figure 9 ).
Etymology.
Latin “ digitatus ” = finger-like. The new species name refers to the male pleopod 1 exopod with a finger-like lobe on outer side.
Remarks.
The new species is very similar to L. isseli ( Arcangeli, 1927) in having the cephalon with an arched median lobe, and the first pereonite with a blunted postero-lateral corner. But it can be distinguished in having the pleopod 1 exopod with an undeveloped inner lobe (Fig. 9 F View Figure 9 ). In L. isseli , the inner lobe of pleopod 1 exopod is well-developed ( Kwon 1993: fig. 168). In the mounted appendages, this species resembles L. nudus Li, 2017 and L. schmidti sp. nov. Furthermore, the molecular data recognized both species as distinct taxonomic entities (Fig. 5 View Figure 5 ).
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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