Tribe Astatini


1  Antennae with 13 articles, abdomen with seven visible terga, males

2

 

1 Antennae with 12 articles, abdomen with six visible terga, females

3

 

2  Malar space longer than midocellus diameter, submarginal cell II shorter than I on media, tergum I narrower than II

 

Dryudella

 

2 Malar space short, base of mandible nearly touching lower eye margin, submarginal cell II longer than I on media, tergum I as wide as II

Astata

 

3  Pygidial plate bordered with stout, recurrent marginal spines, submarginal cell II as long as or often longer than I as measured on media

 

Astata

 

3 Pygidial plate not bordered by stout spines; submarginal cell II short, not more than 0.75 length of I

Dryudella

Key Main