Category: Bug of the Week (Page 78 of 219)

Bug of the Week: Butterfly Season

Arizona’s seasons are often out of sync, especially in the Sonoran Desert. When everyone else is shutting down and getting ready for fall and winter, our wildlife is gearing up. A few weeks ago, we featured some insect eggs. Now we have caterpillars and chrysalids galore.

queen-caterpillar-small

Take this larva of a queen butterfly resting on a rush milkweed. It is taking advantage of the new growth the plants are putting out after recent rains.

queen-chrysalis-003Some of the faster developing larvae have already transformed into chrysalids. They will soon be adult queen butterflies.

skipper-on-cordiaThe skipper butterflies have already reached adulthood and are ready to lay eggs again.

Check out this post by Margarethe Brummermann who says there were 28 species of butterflies (as well as other insects) in Madera Canyon this week. She also posted an amazing video on Flickr.

 What insects did you see this week?

Bug of the Week: Cicada Hunter Wasp

This wasp might not look that spectacular.

cicada-killer-wasp-023Especially while it is drinking nectar from an Arizona grape ivy flower.

cicada-killer-wasp-024You might rethink that assessment, however, when you realize this wasp is capable of capturing and carrying away a full grown cicada. Given how large a cicada is, that’s pretty impressive!

 

Bug of the Week: Summer Insect Eggs

The summer rains have finally started in the Sonoran Desert. With the rain comes new plant growth and with new plant growth comes insects.

gws-cicada-oviposition-147Studying the desert willow this morning, I noticed these small tears in the wood of some twigs. Any idea what caused it?

gws-insect-eggs-on-desert-willow-139Then I found these on a nearby desert willow leaf. Can you tell what they are?

close-insect-eggs-on-desert-willow-138Perhaps with a closer view?

Answers:

The splinters in the twig were caused by a cicada laying its eggs under the bark. The cicada nymphs will hatch out, fall to the ground, and feed underground on the roots until next summer.

The white eggs on the leaf are likely to be moth eggs. I will be watching the tree closely for the next few days to see if any caterpillars develop. We already have giant swallowtail caterpillars on the citrus, queen caterpillars on the rush milkweeds and tobacco hornworms on the datura.

Do you see more insects in rainy years than dry years where you live?

« Older posts Newer posts »