Arion fasciatus

Arion (Carinarion) fasciatus (Nilsson, 1823)

Common Names

Orange-banded arion (English)

Languages: English

Description

Behaviour

Aggregations occur with during dry conditions and unfavorable temperatures (Rollo & Wellington 1981).

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Look Alikes

Arion circumscriptus, Arion silvaticus

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Morphology

External:  Gray on dorsum, paler at sides and white toward foot fringe, dark bands on sides of body and mantle and with yellow below stripes; slight keel formed by larger tubercles along dorsal mid-line; bell-shaped in cross-section; opaque gray-white sole; clear mucus;  (Quick 1960; Kerney & Cameron 1979).

Internal:  Dark ovotestis, pinkish spermoviduct, yellow atrium; long spermatheca with short, wide duct; epiphallus with swollen ring around its base; long, thin oviduct; 4 mm long spermatophore with coiled anterior part, wider behind (Quick 1960).

A. circumscriptus and A. silvaticus are similar, but no yellow, smaller, and have a wider oviduct.  A. subfuscus are similar but have colored body mucus and different internal anatomy (Kerney & Cameron 1979); relative to A. silvaticus, is flatter, lighter in color, with orange/yellow stripe under dark side stripes, conical atrium, larger epiphallus with swelling at its base, thicker spermatheca duct (Wiktor 1983).

Eggs:  3 x 2 mm, yellow or light brown, translucent; clutches to 30 eggs; laid late spring to fall (Quick 1960).

Juveniles:  5 mm long at hatching, yellow-gray, with a pale dorsal keel that diminishes with age (Quick 1960).

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Size

Medium, 40-50 mm long (Kerney & Cameron 1979). 

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Ecology and Distribution

Distribution

Native to:  NW Europe (Kerney & Cameron 1979); north to Scandinavia, west to France, and east to W Russia, Ukraine, Romania (Quick 1960; Likharev & Schileyko, MS; Serlova 2006; in Sysoev & Schileyko 2009).

Non-native to:  Iceland, North America (Quick 1960).

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Ecology

Preyed upon by lampyrid beetle larvae (Schwalb 1961, in Stephenson & Knutson 1966).

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Habitat

A. ater is a synanthrope that inhabits "ecotones" (Chichester & Getz 1973) such as gardens, parks, wastelands, fields, cemeteries, near buildings, garbage dumps (Kerney & Cameron 1979; Wiktor 1996).  Takes shelter in leaf litter and moss or under logs and rocks (Quick 1960).  Does not spread far into undisturbed habitat (Chichester & Getz 1969).

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Trophic Strategy

Probably feeds on fungus, "lettuce in lab" (Chichester & Getz 1973).

Author(s): Paustian, Megan
Rights holder(s): Paustian, Megan

Taxonomy

  • Arion nilssoni Pollonera, 1887 (synonym)
  • Limax fasciatus Nilsson, 1822 (synonym)

References

Chichester, LF., & Getz LL. (1969).  The zoogeography and ecology of arionid and limacid slugs introduced into Northeastern North America. Malacologia. 7(2-3), 313-346.
Chichester, LF., & Getz LL. (1973).  The terrestrial slugs of northeastern North America. Sterkiana. 51, 11-42.
Jennings, TJ., & Barkham JP. (1975).  Food of slugs in mixed deciduous woodlands. Oikos. 26, 211-221.
Kerney, MP., & Cameron RAD. (1979).  Land Snails of Britain and North-West Europe. Hong Kong: Harper Collins Publishers.
Quick, HE. (1960).  British slugs (Pulmonata: Testacellidae, Arionidae, Limacidae). Bulletin of the British Museum (Natural History), Zoology. 6, 103-226.
Stephenson, JW., & Knutson LV. (1966).  A resume of recent studies of invertebrates associated with slugs. Journal of Economic Entomology. 59, 356-360.
Sysoev, A., & Schileyko A. (2009).  Land Snails and Slugs of Russia and Adjacent Countries. Sofia: Pensoft.
Wiktor, A. (1983).  The slugs of Bulgaria (Arionidae, Milacidae, Limacidae, Agriolimacidae - Gastropoda, Stylommatophora). Annales Zoologici. 37(3), 71-205.