Christina,
If you're referring to what appears to be the 'second tube' in this image (running along the ventral surface between the legs), I believe it is the lower lip (labium) which is trough-like. The sucking mouth parts (mandible and maxilla) lie within the trough when not in use. I'm pretty sure the labium is fixed, in that it doesn't move. Think sheath for the mandible/maxilla sword.
Grahame,
Great detailed shots, showing both the complexity and beauty of these bugs. The yellow/black or black/orange colors, et. al are typically visual warnings to predators that the bug is foul tasting. The Monarch butterfly is another example of toxicity and warning colors.
Every piece is a Masterpiece; awesome![]()
Jack, Christina,
I have done some more investigation regarding the tubes but there seems a lack of reference to the purpose of the two clearly separate items. How Jack describes them makes sense as this can clearly be seen looking at the first three shots. It's also noticeable that the forward one 'extends' as necessary. The rear trough like tube, labium, seems to be able to be folded up or hanging down depending on different pictures I have looked at.
Thanks for the information Jack, it's surprising what you start to see and query when viewing the details of these tiny critters.
Grahame
simply awesome!
looks great!
well this is frustrating. My web connection is too slow to load your three pictures all at once. But from the little bits I have seen they look very impressive.
Erick, Dedric and Brian
Thanks for commenting.
Brian, I understand the frustrations well but fortunately in the past year our connection speeds have improved much here.
Grahame