Quote Originally Posted by atronox View Post
I don't think this is correct? The Comstock system includes vein 6 as part of the medial veins, separate from the radial vein: https://www.researchgate.net/publica...a/figures?lo=1 (fig. 6-1)(vein 6 is vein M1 in Comstock notation). Thus vein 6 cannot be an extension of the radius. The radial vein is the entire length of vein 7, including the upper length of the cell. The key would make a lot more sense if interpreted in this way. If interpreted in the way that you described, the origin of vein 7 would not have any discernible difference in each species

What i believe they actually mean in the key, is that in damona vein 6 is confluent with the upper vein forming the cell (joint to it as a seamless wire), and this single branch originates from the middle of vein 7. But in the other spp. vein 6 does not meet the upper vein of the cell, instead branching off from near the cell apex, so they are two separate units.

The confusion arises because they fail to mention this confluence, which to me is very important as it aids visually in understanding what is actually happening in the venation at that crucial area

So i strongly believe this is what they actually meant, because then
1. the key would make sense,
2. this would agree with Comstock notation, and
3. this would explain the differences in venation seen in all the images (that would also mean that many images of each species are potentially not correct- for example the second and third links under dieneces that you gave clearly show this minute difference in that area)

Cheers! Thoughts and corrections always welcome!


Why in the world are you talking about Comstock Notation.
C&P4 does not use Comstock to the decribe buttrfly venation.
It it6 does it would not be describing in Numerical terms.
See.
https://butterflycircle.blogspot.com...my-part-2.html


There are two errors in the line from the key.

Vein 6 is suppose to mean vein 7.
The line under R. damona is meant for R. dieneces.
The line under R. dieneces is meant for R. damona.


On page 326 is fig 124, an image of the venation of R. iarbus.
Vein 7 arise from the apex (highest point) of the HW cell.


What Eliot meant is only R. dieneces have vein 7 arising from the middle of the radius, the upper arm of the HW cell.

All other species (including R. damona) have the venation shown in R. iarbus.



TL Seow: Cheers.