[Community] Orthetrum brunneum: unusual wings veins pattern

[bernhard_renaud at bluewin.ch]

Good morning,

I'm used to hear and notice that one easy way to tell O. brunneum from O. coerulescens is the number of cells' rows 
between IR3 and Rspl, beeing that brunneum have double rows on at least 4 cells there and coerulescens have less, if 
any.

I have shot that Orthetrum brunneum (pic 7329 on www.asia-dragonfly.net near Geneva, Switzerland in August this year. 
It doesn't have any doubled rows on any wings. There is one supplementary cells on both left wings but even so that's 
more forked cross veins than double row.

Is it just an odd bird or are O. brunneum with no (or at least less then four) double rows rather frequent?



Have a nice day,

Renaud BERNHARD,

Switzerland