Species list, Checklist of Superorder Thoracica (Barnacles) for Penobscot County (Maine, 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 Superorder Thoracica Darwin, 1854 (Barnacles)
and region Penobscot County (Maine, USA)

Class	Maxillopoda Dahl, 1956 Maxillopods	19 24 28	Families Genera Species	Taxom
Subclass	Thecostraca Gruvel, 1905	4 5 7	Families Genera Species	Taxom
Infraclass	Cirripedia Burmeister, 1834 Barnacles	4 5 7	Families Genera Species	Taxom
Superorder	Thoracica Darwin, 1854 Barnacles	4 5 7	Families Genera Species	Taxom

List of families for Penobscot County
4 Families width 7 Species

Pyrgomatidae (Gray, 1825)	Coral barnacle	1	Species	Taxom
Balanidae (Leach, 1806)		3	Species	Taxom
Archaeobalanidae Newman & Ross, 1976		2	Species	Taxom
Lepadidae Darwin, 1852	Goose barnacles	1	Species	Taxom

Genera for Penobscot County
5 Genera with 7 Species

Adna Sowerby, 1823		1	Species	Taxom
Balanus Da Costa, 1758	Barnacle	3	Species	Taxom
Chirona Gray, 1767		1	Species	Taxom
Lepas Linnaeus, 1758	Goose Barnacles	1	Species	Taxom
Semibalanus Pilsbry, 1767		1	Species	Taxom

Species list for Penobscot County
7 Species

Adna anglica (Sowerby, 1823)	⇒ Megatrema anglicum Sowerby, 1823
Balanus balanus Linnaeus, 1758	Common barnacle
Balanus crenatus Bruguière, 1789	Mountain ninebark
Balanus tintinnabulum (Linnaeus, 1758)	⇒ Chthamalus stellatus Poli, 1791
Chirona hameri Ascanius, 1767
Lepas (Lepas) anatifera Linnaeus, 1758	Common goose barnacle
Semibalanus balanoides Linnaeus, 1767	Acorn barnacle

Subnodes of Thoracica with occurrences in Penobscot County

Order	Pedunculata Lamarck, 1818 Goose barnacle, Goose barnacles, Gooseneck barnacle, Gooseneck barnacles, Stalked barnacle, Stalked barnacles	1 1 1	Family Genus Species	Taxom
Order	Sessilia Lamarck, 1818 Acorn barnacles, Sessile barnacles	3 4 6	Families Genera Species	Taxom

Links, sources and further information

Thoracica at artfakta.se
Thoracica at irmng.org
Thoracica at itis.gov
Thoracica at marinespecies.org