Zootecus pullus ( Gray, 1834 )

Man, Nem Sian, Ablett, Jonathan D., Lwin, Ngwe, Sutcharit, Chirasak & Panha, Somsak, 2024, Contributions on a small collection of the former Subulinidae Fischer & Crosse, 1877 (Eupulmonata, Achatinoidea) with catalogue of the Glessula and Rishetia species recorded from Myanmar, ZooKeys 1208, pp. 173-239 : 173-239

publication ID

https://doi.org/ 10.3897/zookeys.1208.116083

publication LSID

lsid:zoobank.org:pub:0215503D-E8B4-4179-89F6-FB2CCC59F37E

DOI

https://doi.org/10.5281/zenodo.13138407

persistent identifier

https://treatment.plazi.org/id/B4CAA9BC-F2E4-55F7-A1FD-D8DB3F812010

treatment provided by

ZooKeys by Pensoft

scientific name

Zootecus pullus ( Gray, 1834 )
status

 

40 Zootecus pullus ( Gray, 1834)

Figs 17 D – H View Figure 17 , 18 View Figure 18 , Table 1 View Table 1

Bulimus pullus Gray, 1834: 66. Type locality: India Orientali ad ripas Gangis [Eastern India, banks of the Ganges River]. Pfeiffer 1848: 162. Reeve 1849 b: Bulimus pl. 67, species 476. Blanford 1865: 94. View in CoL

Bulimus (Opeas) pullus View in CoL — Albers 1850: 175.

Pupa (Cylindrus) pulla View in CoL — von Martens 1860: 297.

Bulimina (Mastus) pulla — Pfeiffer and Clessin 1881: 293.

Rumina pulla View in CoL — Ancey 1886: 61.

Stenogyra pulla — von Martens 1895: 106, 107, pl. 8, figs 7, 8.

Zootecus insularis var. pullus View in CoL — Pilsbry 1906: 110, pl. 26, figs 26–28.

Zootecus pullus View in CoL — Gude 1914: 371, 372. Raheem et al. 2014: 118, 119, fig. 74 e, f.

Type specimens.

Lectotype NHMUK 1986252 About NHMUK / 1 (Fig. 17 D View Figure 17 ; designated in Raheem et al. 2014) . Paralectotype NHMUK 1986252 (1 shell; Fig. 17 E View Figure 17 ) from Banks of the Ganges, South Asia.

Other material.

Dhammayazaka Pagoda, Pwasaw Village, Bagan City, Mandalay Region, Myanmar (21 ° 08 ' 40.3 " N, 94 ° 52 ' 58.0 " E): CUMZ 13081 (70 shells; Fig. 17 F – H View Figure 17 ), CUMZ 13082 (20 specimens in ethanol).

Description.

Shell subcylindrical, solid, glossy, pale grey colour, slightly thick, and with 8–9 ½ whorls. Apex slightly elevated; protoconch ~ 2 whorls, dome-shaped and nearly smooth with fine radial striations; subsequent whorls with dense but fine, wavy, radial striations, stronger near suture. Spire grows evenly; whorls flatly convex; suture wide and shallow. Aperture nearly rounded and wide; columella straight; peristome relatively thickened, expanded, and white. Umbilicus narrowly opened.

Genitalia (n = 5). Atrium undifferentiated. Penis very narrow, slender, almost same length with vagina, and slightly bulging at base. Penial retractor slender, long and attached at junction of penis and vas deferens. Epiphallus very short or indistinct. Vas deferens long, slender tube, and connected between penis / epiphallus to free oviduct (Fig. 18 A, B View Figure 18 ).

Vagina much larger than penis and cylindrical shape. Gametolytic duct short and slender tube; gametolytic sac distinct and bulbus shape. Free oviduct almost the same diameter as vagina; spermoviduct enlarged.

Radula. Each row contains ~ 43 + teeth with half-row formula: central-lateral-marginal teeth (1 – (11–13) – (6–7 + )). Central tooth relatively small, tricuspid with pointed central cusp, and small, rounded, lateral cusps. Lateral teeth bicuspid: endocone large rhomboid in shape and with pointed to dull tip; ectocone small, pointed tip and located at middle of tooth height. Marginal teeth asymmetrically tricuspid starting approximately at tooth number 11–13: mesocone large, triangular, and curved to blunt tip; endocone small and located near tip of mesocone; ectocone triangular, pointed tip and located near tooth base. Outermost teeth small and polycuspid (Fig. 18 C View Figure 18 ).

Distribution.

Apart from Myanmar, this species is likely to occur in India and Bangladesh ( Raheem et al. 2014).

Remarks.

In Myanmar, the previous records of Z. pullus were from ‘ Ava’ [Innwa in Mandalay Region]. Our newly collected specimens from Bagan (~ 150 km southwest of Innwa) are identified as this species, but they present some differences such as having a long and narrower shell and a blunt apex. Zootecus pullus has a penis nearly equal in length to the vagina, and the penis is slightly enlarged with a conical shape at base near the atrium (Fig. 18 A, B View Figure 18 ), while Z. insularis possesses a penis shorter than the vagina, and the evenly slender penis (see Schileyko 1999: fig. 678 from a near type locality in the Red Sea). Further investigation is required to determine whether these two Myanmar species are distinct or simply demonstrate variation in shell morphology.

NHMUK

Natural History Museum, London

CUMZ

Cameroon University, Museum of Zoology

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

SuperOrder

Eupulmonata

Order

Stylommatophora

SuperFamily

Achatinoidea

Family

Subulinidae

Genus

Zootecus

Loc

Zootecus pullus ( Gray, 1834 )

Man, Nem Sian, Ablett, Jonathan D., Lwin, Ngwe, Sutcharit, Chirasak & Panha, Somsak 2024
2024
Loc

Zootecus pullus

Raheem DC & Taylor H & Ablett J & Preece RC & Aravind NA & Naggs F 2014: 118
Gude GK 1914: 371
1914
Loc

Zootecus insularis var. pullus

Pilsbry HA 1906: 110
1906
Loc

Stenogyra pulla

von Martens E 1895: 106
1895
Loc

Rumina pulla

Ancey CF 1886: 61
1886
Loc

Bulimina (Mastus) pulla

Pfeiffer L & Clessin S 1881: 293
1881
Loc

Pupa (Cylindrus) pulla

von Martens E 1860: 297
1860
Loc

Bulimus (Opeas) pullus

Albers JC 1850: 175
1850
Loc

Bulimus pullus

Blanford WT 1865: 94
Pfeiffer L 1848: 162
Gray JE 1834: 66
Reeve 1849
1834