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University of California
Cooperative Extension San Joaquin County

Posts Tagged: UC IPM

Redhumped Caterpillar: Aptly Named

Redhumped caterpillars on a Western redbud tree in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

How appropriate are many of the common names of insects! Take the immature form (caterpillar) of the moth, Schizura concinna, family Notodontidae.  We first spotted this caterpillar on our Western redbud tree (Cercis occidentalis) in September...

They Hop and They Suck!

Two leafhoppers sharing a black sage leaf in Vacaville, Calif. They are Typhlocybinae leafhoppers, Eupteryx decemnotata, according to Robert Lord Zimlich of BugGuide.Net.  (Photo by Kathy Keatley Garvey)

You've seen them. You've seen them hop. They're aptly named. Leafhoppers are tiny insects (family Cicadellidae) that suck nutrients from plants. But have you ever looked at them really closely? We spotted scores of mottled leafhoppers last week on...

A Butterfly for a Beer! Or Suds for a Bug!

A cabbage white butterfly, Pieris rapae, nectaring on catmint in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

A butterfly for a beer? Suds for a bug? The annual “Butterfly for a Beer” contest, sponsored by Art Shapiro, distinguished professor of evolution and ecology at the University of California, Davis, gets underway on Monday, Jan. 1. The...

Posted on Thursday, December 21, 2017 at 11:30 AM

Ground-Breaking Research: Sex Pheromone of Asian Citrus Psyllid Discovered

This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)

The Asian citrus psyllid, the most devastating threat to the worldwide citrus industry, may have met its match. In a ground-breaking discovery encompassing six years of research, an international team of scientists led by UC Davis chemical ecologist...

What This Katydid Did...

Who goes there? That would be a katydid peeking out between yellow rose petals. (Photo by Kathy Keatley Garvey)

It's not a question of whether katydid did or didn't. She did. In answer to what-are-we-going-to-see-next-in-insect-sightings-today-in-our-weird-climate-changing patterns, a katydid  appeared on our yellow rose bush on Nov. 21 in Vacaville,...

Posted on Tuesday, November 28, 2017 at 5:33 PM

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