Category: Bug of the Week (Page 97 of 218)

Bug of the Week: Smoke Tree Sharpshooter Revisited

Have you ever encountered a sharpshooter?

really-clear-sharpshooterI’m talking about the group of plant-feeding leafhoppers that have oddly-shaped heads.

eally-close-sharpshooter-undersideYou can tell it is a sharpshooter by the prominent eyes and enlarged, swollen area of the head capsule known as the clypeus. It is yellow with faint stripes in this insect.

sharpshooter-croppedThat swollen area is full of muscles that help the sharpshooter pump fluids from the plant. You could compare it to the bulb of a turkey baster.

The sharpshooter uses its big eyes, too. When something approaches a sharpshooter, it quickly scoots to the other side of the twig or branch. If the potential predator comes even closer, it will leap away with its jumping hind legs.

This is probably a male smoke tree sharpshooter (Homalodisca lacerta) because it lacks the white, waxy patches on the sides of its wings that are found on females (image at BugGuide).

Life cycle:

leafhopper-eggsFemale sharpshooters lay their eggs in rows, generally on the undersides of leaves.

sharpshooter-nymph-goodThe eggs hatch into youngsters called nymphs. They don’t have the bright coloration of the adults, although they do still have a protruding head and noticeable eyes. The nymphs undergo several molts and then become adults.

sharpshooter-nymph-psdYou can often see adults and nymphs feeding together on the same stem.

Unlike some insects, smoke tree sharpshooters are polyphagus, which means they will feed on a number of different plants. The sharpshooter in the top photos is feeding on hollyhock. The single nymph is on Texas yellow bells.

Do sharpshooters occur where you live? Have you ever seen one? What do they feed on where you live?

Bug of the Week: Tumbling Flower Beetles

Have you ever spotted a beetle and haven’t been able to figure out what kind it is?

Tumbling flower beetle-11Take these black insects, for example. You might not even be sure that they are beetles.

tumbling-flower-beetles-22Fortunately, I was able to key them out using a new book (see below for details). These are tumbling flower beetles, in the Family Mordellidae.

flower-beetle-closeTumbling flower beetles are distinguished by their wedge shape and the fact their elytra (hard wings) do not cover the abdomen.The abdomen is pointed at the end, as well.

They are called “tumbling” because the adults have an odd behavior of awkwardly jumping away from predators that leads them to tumble. The “flower'” part comes from the fact the adults are often seen at flowers feeding on nectar.

Have you ever seen tumbling flower beetles tumble? How would you describe it?

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The book I used to identify the insects is Beetles of Eastern North America by Arthur V. Evans, just published this month.

This book is an extensive desk-top reference for those interested in beetles. Along with the illustrated key to common beetle families, it contains detailed descriptions of 1,406 different species of beetles, each accompanied by a good sized full-color photograph.

In addition to helping with identification, Beetles of Eastern North America is also a fabulous place to start learning about beetles in general. There is an extensive introduction covering anatomy, natural history, where to look for beetles, how to observe and collect them, etc. It is filled with information, even the end paper in the back has a ruler and illustrations of beetles with their parts labelled.

Are you interested in working with beetles? On page 52, Evans discusses how to become involved in beetle research, encouraging students and amateur naturalists to participate in citizen science.

Examples of beetle-related citizen science projects:

Beetles of Eastern North America definitely is worth consideration if you have ever wondered, “What is that beetle?”

Paperback: 560 pages
Publisher: Princeton University Press (June 8, 2014)
Language: English
ISBN-10: 0691133042
ISBN-13: 978-0691133041

Disclosures:  This book was supplied by the publisher for review purposes. Also, I am an affiliate for Amazon, and if you click through the linked titles or ads and make a purchase, I will receive a small commission at no extra charge to you. Proceeds will be used to maintain this self-hosted blog.

 

Bug of the Week: Moth on Hollyhock

A young friend of mine has become interested in moths, so I’ve been paying more attention to them.

It isn’t easy though, because moths are usually active at night.

hollyhock-leafminer-moth-1Plus, many of them are tiny. Can you even tell this is a moth?

Studying moths is definitely challenging!

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