Species list, Checklist of Subclass Thecostraca for Orcas Island (San Juan Islands, San Juan County, Washington, USA)

Ants	Arachnids
Bees	Beetles
Booklice	Bugs
Bumblebees	Butterflies
Cicadas	Crane flies
Dragonflies	Earwigs
Flies	Isopods
Locusts	Mantises
Mayflies	Mosquitoes
Myriapods	Net-winged
Plant-parasitic	Scorpion flies
Termites	Wasps

Taxonomy & Distribution
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INSECTOIDGERENGDARK LIGHT

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Checklist for Subclass Thecostraca Gruvel, 1905
and region Orcas Island (San Juan Islands, San Juan County, Washington, USA)

Class	Maxillopoda Dahl, 1956 Maxillopods	7 8 10	Families Genera Species	Taxom
Subclass	Thecostraca Gruvel, 1905	4 4 6	Families Genera Species	Taxom

List of families for Orcas Island
4 Families width 6 Species

Balanidae Leach, 1806	3	Species	Taxom
Peltogastridae Lilljeborg, 1860	1	Species	Taxom
Pollicipedidae Leach, 1817	1	Species	Taxom
Archaeobalanidae Newman & Ross, 1976	1	Species	Taxom

Genera for Orcas Island
4 Genera with 6 Species

Balanus Da Costa, 1854	Barnacle	3	Species	Taxom
Peltogasterella Krüger, 1863		1	Species	Taxom
Pollicipes Leach, 1883		1	Species	Taxom
Semibalanus Pilsbry, 1788		1	Species	Taxom

Species list for Orcas Island
6 Species

Balanus crenatus Bruguière, 1789	Mountain ninebark
Balanus engbergi Pilsbry, 1921
Balanus glandula Darwin, 1854	Common Acorn Barnacle
Peltogasterella socialis Müller, 1863
Pollicipes polymerus Sowerby, 1883	Gooseneck barnacle
Semibalanus cariosus Pallas, 1788	Thatched barnacle

Subnodes of Thecostraca with occurrences in Orcas Island

Infraclass

Cirripedia
Burmeister, 1834
Barnacles

4
4
6

Families
Genera
Species

Taxom

Links, sources and further information

Thecostraca at artfakta.se
Thecostraca at itis.gov
Thecostraca at marinespecies.org