Sexostiatae

plural noun
Sex·​os·​ti·​a·​tae | \ˌsekˌsästēˈāt(ˌ)ē\

Definition of Sexostiatae 

in some classifications

: a group of spiders distinguished by the presence of six cardiac ostia

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History and Etymology for Sexostiatae

New Latin, from sex- + ostium + Latin -atae, feminine plural of -atus -ate

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