Home
Acknowledgments
Conventions
Glossary
Maps
References
Links
Articles
Thumbnails
Species list
Family
Next species
_______________
 
Additional Photos
 

undereside
 

cluster
 

shell
 



 
Allochroa layardi
(Philippi, 1846)
 
Allochroa layardi
Maximum size:  10 mm (Kay, 1979).

Identification:  The shells of this species are relatively slender with broad, spiral brown bands and faint spiral striae. There is a single prominent fold inside the outer lip and three folds on the columella.

Natural history:  On Maui, shells of Allochroa layardi are moderately rare in beach drift. Live animals may occasionally be seen in high intertidal tide pools or under cobbles. According to Kay (1979) they are typically found lower in the intertidal than the more common ellobiids. It appears to be more common in protected habitats on Oahu.

Distribution:  Maui and Oahu.

Taxonomic notes:  This species is listed in Kay, 1979 as Allochroa bronni (Philippi, 1846). It's listed as a Laemodonta species in Edmondson, 1946 and as Laemondonta clausa in Tinker, 1958 (although the latter is listed as a synonym of Laemodonta octanfracta in Kay, 1979). Meanwhile, Martins, 1995 considers Allochroa bronni and Allochroa layardi to be separate species with the former being endemic to Hawaii. However, we're opting to lump the available material under A. layardi pending further work.

Photo:  CP: Hekili Point, Maui; Oct. 17, 2009.

Observations and comments:

Note 1:  ( )
Thumbnails
Species list
Family Next species Top