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1 Episternal sulcus curving back to scrobe from subalar fossa, then extending obliquely ventrad to anteroventral area of mesopleuron
Eremnophila
1’ Episternal sulcus extending straight down from subalar fossa (sometimes absent), not passing through scrobe
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2 Apex of sternum I (petiole) meeting and often overlapping base of II; petiole often bent upward
Podalonia
2’ Apex of sternum I not reaching base of II; sternum usually bent downward or straight
Ammophila
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