Intertidal Organisms EZ-ID GUIDES

 

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Lottia digitalis & pelta; Tectura persona & scutum

(Finger limpet, Shield limpet, Mask limpet, and Plate limpet)

photo of 4 species intertidal limpets
Copyright © 2005 Mary Jo Adams

 

Table With Distinguishing Features

Species
Lottia digitalis
Lottia pelta
Tectura persona
Tectura scutum
Profile
Profile of Lottia digitalis
profile of Lottia pelta
Profile of Tectura persona

Profile of Tectura scutum

Location of apex
Far anterior, nearly even with anterior margin
Slightly off center
Off center midway between center and anterior end
Slightly off center
Shell height
Height generally more than 1/3 length
Height generally more than 1/3 length
Height generally more than 1/3 length

Height

generally  less than 1/3 length
Margin texture
Pronounced ribbing
May be smooth or have ribbing
Smooth
Smooth
Tide height
Splash zone and high intertidal
Middle and low intertidal
High and middle intertidal

Middle and low intertidal;

shallow subtidal

 

This page was created by Mary Jo Adams on 5/24/06.

 

 

photo of 4 species of limpets

photo of finger limpet

photo of shield limpet

 

photo of mask limpet

 

photo of plate limpet