[Syrphidae] tentorial pits

Tue, 08 May 2001 10:20:21 +0200

Dear all,

In Speight's key for the genus Eristalis from the Species account, what is 
called in English "the tentorial pits". It is the first time I see that 
word. What is its signification? Where is it on the head?

Pierre-Nicolas
Pierre-Nicolas LIBERT

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