Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
σφηκίασ swarms of wasps LXX.Exod.23.28LXX.Deut.7.20
σφηκίαν swarm of wasps LXX.Josh.24.12

Liddell-Scott-Jones

σφηκιά (sphēkia) a swarm of wasps G:N-F

σφηκιά-ιά, ,

wasps' nest, [LXX+5th c.BC+]; σφηκιάιαὶ ἐχθρῶν, opposed to ἑσμὸς φίλων, [Refs 1st c.AD+]

LSJ Scripture Refs: LXX.Exod.23.28