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-22-
Table
1. Genera of Coleoptera which
predominate in each intertidal zone
in southern California
|
Rocky headlands and reefs* ---------------------------------- (a) Area of-red algae down to mean low water Diaulota (b) Area of high tides Thalassotrechus*
Diglotta*
Bryothinusa*
Diaulota* (also Aegialites. Amblopusa*, Endeodes Liparocephalus* and Ochthebius in
central California) (c) Area of spray Bryothinusa* Diaulota* Thalassotrechus |
Sandy beaches
---------------------------------- Area
of fresh seaweed
Cafius* Cicindela Dyschirius Thinopinus* Area
of decaying seaweed
Aleochara*
Anthicus
Bledius*
Bryobiota*
Cafius*
Cercyon
Diglotta*
Emphyastes
Hadrotes*
Hypocaccus
Motschulkium
Neopachylopus
Phaleria
Phycocoetes
Pontamalota*
Tarphiota* Thinusa* Area
of dry seaweed
Amblyoderus
Anthicus
Apsena
Catorama Endeodes Phaleria Phyconomus |
Mudflats
----------------------------------- Area
of daily tides
Berosus Enochrus Tropisternis (All in the water) Area
of sea-lettuce
Actinidium
Bembidion*
Carpelimus* Cicindela Myllaena* Ochthebius Tachys Thinobius* Throscinus Area of Salicornia Bledius* Carpelimus* Thinobius* |
*
Staphyhinidae.
|
continue their activities in seawater at a reduced rate of metabolism
(Meyerdirk, 1969). All of the species, which inhabit the reef area, are
submarine as they are normally submerged in seawater part of the time. One
species, Diaulota harteri Moore, is found as deep as mean low water
where it would sometimes be submerged for as long as 20 hours a day. These
species spend most of their time in crevices in the rocks or in empty
barnacle shells, etc. They sometimes come out and wander about at low tide. It is
questionable if any of the typical species of the sandy beach could be called |