|
Citrus Swallowtail, Papilio demodocus, is very common in Tanzania |
We're rarely short of butterflies in Tanzania, but they're a sadly overlooked group. Except, perhaps, when they're swarming by the million as earlier this year most people will, at best, only notice a few in passing. For a hugely diverse group (there are over
18,000 described species), they fall into a relatively small number of readily recognisable families. Unfortunately, all the nice identification books are out of print (and wickedly expensive to buy on ebay!) for East Africa, but there are some resources out there that will help once you've figured out the families. The relationships between the families have recently been
the subject of some serious work. It turns out that the family relationship were rather difficult to pin down because they all evolved relatively quickly in the Cretaceous (yes, dinosaur time, 100 - 75 Million Year Ago). But our best guess at the moment sorts them into 4 main groups split into a total of 26ish main family groups, only a few of which are at all diverse. So it's not too hard to get to grips with the main families, and the main change to the traditional taxonomy, if you've been into that, is that the big group Papilionoidea is actually two, rather distantly related groups. I'm going to describe some of the common families here (together with some of my favourite stories about them - yes, including corrupt, singing caterpillars) and hopefully will be able to show how the various families fit together at the end. So, here goes...