Woodlice poo said to be awful (7)

I believe the answer is:

isopoda

'woodlice' is the definition.
(order of animals including woodlice)

'poo said to be awful' is the wordplay.
'to be awful' is an anagram indicator.
'poo'+'said'='poosaid'
'poosaid' is an anagram of 'ISOPODA'.

(Another definition for isopoda that I've seen is " Lousy types".)

I've seen this clue in The Independent.

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