Sarika asamurai (Panha, 1997)

Sutcharit, Chirasak & Panha, Somsak, 2008, Taxonomic Re-Evaluation Of Sarika Diadema (Dall, 1897) And S. Asamurai (Panha, 1997), Two Endemic Land Snails From Thailand (Pulmonata: Ariophantidae: Macrochlamydinae), Raffles Bulletin of Zoology 56 (1), pp. 95-100 : 99-100

publication ID	https://doi.org/ 10.5281/zenodo.5341400
persistent identifier	https://treatment.plazi.org/id/038F9713-FFB9-5366-0B5D-F443B6E4FC95
treatment provided by	Diego
scientific name	Sarika asamurai (Panha, 1997)
status

Treatment

Sarika asamurai (Panha, 1997) View in CoL

( Figs. 2C, D View Fig ; 3E–I View Fig ; 4D–F View Fig )

Macrochlamys asamurai Panha, 1996 View in CoL [1997]: 101–105, Figs. 2a, 2b View Fig 1 View Fig ( Takun Village , Suratthani, Thailand; Holotype CUMZ 6325 View Materials ).

Type material. – Takun Village, Suratthani: Holotype CUMZ 6325 View Materials ; Paratype: CUMZ 6326 View Materials , 6327 View Materials ; FMNH 285043 View Materials ; USNM 892000 View Materials

Other material examined. – Klong Saeng, Suratthani: CUMZ 2584, 2589, 2593, 3617; Wat Tam Wararam, Suratthani: CUMZ 2586, 2590, 2591, 2594, 3618, 4640, 3641; Wat Tam Sok Panthurat, Suratthani: CUMZ 3623, 3624, 3625, 3626; Klong Phanom National Park, Suratthani: CUMZ 3644.

Shell. – Shell ( Fig. 2C View Fig ) similar to that of S. diadema but slightly larger; transverse sculpture on the upper periphery more dense; descending whorls slightly elevated from suture without shoulder.

Genitalia. – Atrium (at) somewhat short. Penis (p) cylindrical, distally thickened from site of penial verge, proximally enclosed in thin penial sheath (ps).

Ephiphallic caecum (ec) short, straight and located about half way along the length of the ephiphallic complex. Penial retractor muscle (prm) short, thick and attached at the tip of ephiphallic caecum. Epiphallus (e) small, and slender tube, about twice length of penis; flagellum (fl) short. Vas deference (vd) a small tube running from the spermoviduct and entering at the epiphallus/flagellum junction. ( Fig. 3F View Fig ). Internal sculpture of penis similar to that in S. diadema , the most notable difference being a distinctly longer penial pilaster (pp) (about half of penial chamber) in S. asamurai ( Fig. 3G View Fig ).

The female genital tracts are generally similar to those of S. diadema but with the significant difference that the dart apparatus (da) is located proximally on the vagina at the genital atrium and is covered in black pigmentation ( Fig. 3F View Fig ).

Allospermatophores (n = 10); only one short spine present at the sperm sac and the tail filament junction( Fig. 3H View Fig ). Five specimens contained spermatophores, each with two in the gametolytic sac.

Radula and jaw. – Each row contained about 125 (65-(17- 16)-1-(15-16)-59) teeth. Central and lateral teeth with triangular tricuspid ( Fig. 4D View Fig ). Bicuspid marginal teeth from 15–17) ( Fig. 4E View Fig ). Radula teeth morphology very similar to that described for S. diadema ; the jaw exhibits significantly less curvature ( Figs. 3I View Fig and 4F View Fig ).

External features. – Head/foot similar in form but markedly different in colour to that of S. diadema . Anterior body black; foot sole reddish and tripartite; mantle collar and thin mantle flaps reddish to dark red. Posterior of body usually entirely reddish or with blackish caudal foss and caudal horn ( Fig. 2D View Fig ). Only the anterior and/or caudal end black pigmentation is retained in ethanol preserved specimens.

Distribution. – Sarika asamurai has a narrower distribution than S. diadema ( Fig. 1 View Fig ). Current records are restricted to the following limestone karst area of Suratthani Province: Klong Phanom and Khao Sok National Parks; Ban Takun village (type locality); Wat Tam Sok Panthurat; Wat Tam Wararam.