View Full Version : Rounded Sixline Blue?

robin ngiam
17-Aug-2011, 02:53 PM

Am having difficulty id this Lycaeninae.
Is this a Rounded Sixline Blue? If yes, how to tell this apart from Opaque Sixline Blue?


17-Aug-2011, 08:02 PM
This is a female Rounded Sixline Blue (N. berenice).

6-line Blues are particularly difficult & confusing.
It is very useful to determine the sex of the individual.
Female have a pointed apex immediately followed by a rounded wing margin (termen). The abdominal tip is pointed.
Male have somewhat blunt tip & a straighter margin.(Very difficult to see with perspective distortion.) The abdominal tip is truncated and brush-like.

Thankfully we now a verified female beroe(Thanks to Sunny) and a verified female calauria(Thanks to Horace.).
The female beroe have big marginal spots & a rather broad submarginal band on the forewing, both dark. See here.

Of more concern is the similarity to the female calauria.
The female calauria also have large marginal spots but the submarginal band have a very irregular margin as in berenice. See.
The submarginal band/spots can also be very narrow. See here.

Here is a pair of N. berenice. The dull male on the left is typical male berenice with pale narrow spots, so there is no doubt of the female here.

TL Seow:cheers:

robin ngiam
19-Aug-2011, 04:57 PM
thanks very much Seow,