a

b

1A

Vertex produced dorsally forming a raised carina; subquadrate in anterior view (figs. a & b) .................................................................................................................................. Dinapsis hirtipes 

a

b

1B

 Vertex normal, evenly rounded (figs. a & b) ..................................................... 2

a

2A

Eyes hairy (fig. a); hind coxae dorsally punctured (sometimes faintly) ................... Dinapsis oculohirta 

a

2B

Eyes bare (fig. a) ; hind coxae smooth ......................................................................................... 3

a

b

3A

Wings entirely infuscate (brownish) (figs. a & b) .......................................................... Dinapsis nubilis

a

b

3B

 Wings with transverse brownish band (figs. a & b) ....................................... 4

a

4A

Occiput with a wide, crenulated collar-like carina (fig. a) ...................................... Dinapsis turneri 

a

b

4B

 Occiput with normal carina (figs. a & b) .......................................................................................... 5

a

5A

Cheek behind the orbital carina smooth (fig. a) ...................................................... Dinapsis seyrigi 

a

5B

 Cheek behind the orbital carina rugose (fig. a) ...................................................... Dinapsis albicoxa