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Invertebrate of the Week #19 – Argonauts (Genus: Argonauta)

Meet an unusual group of octopuses in which the females make paper-thin shells out of arm-gland secretions and the males can’t mate without losing one of their limbs.Despite the nickname … Continue Reading Invertebrate of the Week #19 – Argonauts (Genus: Argonauta)

Invertebrate of the Week #12 – Osmia bicolor: a shell-nesting bee

Acknowledgement: Hat tip to Paul Bee (@solitarybee) and John Walters (@JWentomologist) for bringing this insect to my attention.Meet Osmia bicolor, this week’s Invertebrate of the Week.  Unlike the more social Hymenopterans, O. … Continue Reading Invertebrate of the Week #12 – Osmia bicolor: a shell-nesting bee

Invertebrate of the Week #7 – Sally Lightfoot Crab (Grapsus grapsus)

This week we are showcasing a dashing little crustacean known colloquially as the Sally Lightfoot Crab (Grapsus grapsus).  Sally Lightfoot’s can grow to a maximum carapace size of ~8cm and are … Continue Reading Invertebrate of the Week #7 – Sally Lightfoot Crab (Grapsus grapsus)

Invertebrate of the Week #3 – Marrus orthocanna

We’re sticking with the ocean theme this week and highlighting the spectacular physonect siphonophore Marrus orthocanna.Siphonophores are a member of the same taxonomic Class as jellies (Hydrozoa) and are an intriguing … Continue Reading Invertebrate of the Week #3 – Marrus orthocanna

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