How to Manage Pests

UC Pest Management Guidelines

Cucurbits

Driedfruit Beetles

Scientific Names:
Driedfruit beetle: Carpophilus hemipterus
Freeman sap beetle: Carpophilus freemani
Confused sap beetle: Carpophilus mutilatus

(Reviewed 11/05, updated 11/05)

In this Guideline:


DESCRIPTION OF THE PESTS

Driedfruit beetles, also known as sap beetles, are a complex of several closely related species in the family Nitidulidae that have similar life histories and resemble each other in appearance. The driedfruit beetle is the most common species, but the other two are also common and can be the most abundant in some fields. Other species are sometimes present in lesser numbers.

Adults are small brown or black beetles with or without lighter spots on the wings, depending on species. They range in size from 0.1 to 0.2 inch (3–5 mm) long and have clubbed antennae. The wings do not cover the last two to three abdominal segments. Eggs are laid in fruit, where larvae develop and feed; larvae are white and 0.1 to 0.2 inch (3–5 mm) long when mature. They have tan head capsules, three pairs of true legs, and two hornlike structures on the anal end. Pupation takes place in the soil.

DAMAGE

When melons are approaching maturity and are at the half slip stage, an entry point into the soft fruit tissue develops. Driedfruit beetles can enter at this site and start feeding. They can also enter at any open site caused mechanically or by other insects.

MANAGEMENT

This pest builds up on any rotting fruit (such as citrus, stone fruit, grapes, and figs), which increases the problem as the summer season progresses. Monitor the field for the presence of these beetles. Because of the minor pest status of driedfruit beetles, nothing is presently registered for its control. These beetles are generally controlled when treatments are applied for other pests. When possible, remove or disc nearby rotting fruit, especially when it is upwind from the field; beetles can fly for some distance downwind. Multiple disc, if necessary, of infested fields promptly after final harvest.

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Cucurbits
UC ANR Publication 3445

Insects and Mites

  • E. T. Natwick, UC Cooperative Extension, Imperial County
  • J. J. Stapleton, UC IPM Program, Kearney Agricultultural Center, Parlier
  • C. S. Stoddard, UC Cooperative Extension, Merced & Madera counties
Acknowledgment for contributions to Insects and Mites:
  • R. L. Coviello, UC Cooperative Extension, Fresno County
  • L. D. Godfrey, Entomology, UC Davis
  • C. B. Fouche, UC Cooperative Extension, San Joaquin County
  • C. G. Summers, Entomology, UC Davis/Kearney Agricultural Center, Parlier
  • J. B. LeBoeuf, AgriData Sensing, Inc., Fresno
  • M. Murray, UC Cooperative Extension, Colusa/Glenn counties

Top of page


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/r116302211.html revised: January 8, 2014. Contact webmaster.