Tag Archives: Insects

Insect behavior

If you’ll excuse the poor sharpness in the following sequence, I’d like to share some food stealing behavior I observed and captured between two juvenile hemipterans (mesovelids, I believe).

I also witness the red dragonfly mating, so I can now identify the female.  After mating, the male took up a peculiar posture 10 cm above the female, and chased away other males as they approached (mate guarding).  He continued while she deposited eggs.  Soon, however, a rush of other males came in and the female took off.  The original male remained and defended the area, although I’m not quite sure why.  Further, the male also chased off all other dragonflies, including several individual dragonflies that were completely black, which I assume are another species.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.34
The straw-like mouth parts of Bug 1 are being used to suck up juices from a food source (perhaps a dead insect) as Bug 2 comes in.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.37
Bug 2 approaches Bug 1 from behind.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.40
Bug 1 responds by kicking Bug 2 in the head.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.44
Bug 2 moves to the side and front.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.42
Bug 2 persistantly approaches.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.48
Bug 1 retreats, leaving Bug 2 to feed on the food source.

Mesovelid stealing food sequence - 10.23.2009 - 09.10.50
Mmm, tasty.

Mesovelid stealing food sequence - 10.23.2009 - 09.11.02
For some perspective, this water lily leaf is the size of my palm and the red circle is Bug 2.

Fly orgy

One of my first and most popular posts is the Collembolan orgy.  I get hits from it nearly every day… you know, people searching for the word ‘orgy’.  Well, with a second post entitled so, Google will hopefully up Montegraphia’s rank for the keyword… I’ll get even more curious folks.

Anyway, I collected a few of these guys for Dr. Foote.  They seem to be everywhere in the wetland, but something about this Nymphea flower caused them to react a bit differently.  Are they pollen eaters?

Another thing; How do I sweep for flies in a wetland?  When the net gets wet, it is extremely difficult to pull flies out into the kill jar.

Breeding flies on Nymphea pulchella - 10.17.2009 - 10.41.46
Breeding flies on Nymphea pulchella - 10.17.2009 - 10.29.56 Breeding flies on Nymphea pulchella - 10.17.2009 - 10.35.28

Hemipteran under attack?

This juvenile bug has a queer appearance.  First of all, it is covered in tiny, blue-ish tufts.  Secondly, there are two white ‘eggs’ along its midline.  I’m not sure whether either of these structures are actually part of the bug, or if they are from an outside source – fungus/parasitoid.

There are no tufts on the eyes, and they appear rather uniform in distribution about the rest of the body, so they might be part of the bug.  The ‘eggs’, on the other hand, look a bit more dangerous for this guy…  It’s be cool to see a couple of wasp larva hatch out and burrow in.

Unknown Hempiteran - 09.04.2009 - 15.43.16
Unknown Hempiteran - 09.04.2009 - 15.42.55 Unknown Hempiteran - 09.04.2009 - 15.42.55-2