Contact Us
University of California Cooperative Extension Ventura County
669 County Square Drive, Suite 100
Ventura, CA 93003
Phone: 805.645.1451
Fax: 805.645.1474
Office Hours:
Monday - Friday from 9 a.m. to 4 p.m.
The office will be closed for the following holidays:
GWSS Photos
These pictures (except where otherwise noted) are by Phil A. Phillips, Area IPM Specialist Emeritus Ventura County and may be downloaded for your own use.
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| Adult Glassy-winged Sharpshooter, Homalodisca coagulata, and Egg Mass (left). Photo by Jack Kelly Clark*. | Glassy-winged Sharpshooter Parasitoid, Gonatocerus Ashmeadi. Exit Holes in Sharpshooter Egg Mass. Photo by Jack Kelly Clark*. | Egg Mass of Glassy-winged Sharpshooter (~12x). Photo by Jack Kelly Clark*. |
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| Large drops of watery excretion are produced by each insect every couple of minutes during feeding. | Large numbers of GWSS gather on host plant stems to feed. | Multiple egg masses on Pittosporum leaf from April egg laying period. |
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| Egg mass ready to hatch. NOTE: eye spots of embroyos within egg. |
Nymph nearly fully developed within the egg mass covering which has been torn off the leaf surface and turned upside-down for viewing |
1st stage (instar) nymph, 3-4 hours old. |
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1st instar nymph. |
2nd instar nymph. |
3rd instar nymph. |
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3rd instar nymph next to egg mass. |
Two Gonatacerus ashmead: parasitoids attacking and laying their eggs into a fresh gwss egg mass. |
G. ashmeadi ovipositing into a gwss egg mass. Note gwss excrement debris collected on the tips of the antennae of the parasite as she tapped her antennae over the egg mass while identifying it as a host for her eggs. |
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GWSS adults feeding on crepemyrtle stem during the spring. |
4th instar GWSS nymph ready to molt. |
Freshly emerged adult GWSS from last nymphal molt - note red veins in wings and light color of exoskeltin before hardening to its normal dark color. |
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GWSS bulbous feeding pump and piercing stylet mouth parts. |
Colorful underside of GWSS adult. |
*Jack Kelly Clark, Principal Photographer, University of California, Davis