Citrus Leafminer (Photo: Jack Kelly Clark)

  External Resources

  Product Documents

 Technical Bulletin

Citrus Leafminer_cropped
Citrus Leafminer Tech Bulletin


MalEx CLM Brochure

A Case for Monitoring and Management


  • Native to Asia; present in North  & South America, Middle East
  • Larvae feed on newly emerged leaflets of flush growh
  • Leaf mining compromises vegetative vigor
  • Trees younger than four years old particularly susceptible

Citrus leafminer (CLM) was first identified in Florida in May 1993, subsequently in Texas, Alabama and Louisiana in 1994 and California in 2000. Infestations and foliar mining are most severe on late summer and early fall growth flushes and is most severe in young trees.

CLM deforms leaves and reduces the photosynthetic capability of plants. From an aesthetic and marketing concern, it is especially problematic in citrus grown for the fresh market since CLM mines can also be found on fruit.


For effective intervention with insecticides, it is necessary to monitor CLM moth flights throughout the growing season.


A paper or plastic delta trap can be used to monitor CLM populations. Another option is the wing trap.

delta plastic in apple orchard 400_cropped

Alpha Scents has recently received a Texas State Registration for MalEx™ CLM - an Attract & Kill product which is hand applied as a 50 microliter droplet directly to citrus foliage. The MalEx CLM formulation consists of a pheromone which attracts male moths and the active ingredient imidacloprid which kills the insect when it tries to mate with the droplet.

Attract & Kill technology is target specific, minimizing or eliminating unintended environmental consequences to beneficials. Contact Alpha Scents for orders.

  MalEx™ CLM Attract & Kill

NEW Texas State Registration!

FAX: 314-271-7297 Contact Us

Shopping CartView CartCheckout

SALES:  503-342-8611 971-998-8248


© Copyright 2016 by Alpha Scents, Inc., All Rights Reserved


Halyomorpha halys

Citrus Leafminer