Information

Agricultural entomology: Low cochineal of citrus fruits

Agricultural entomology: Low cochineal of citrus fruits

Classification and host plants

Class: Insects
Order: Rincoti
Suborder: Homoptera
Family: Coccidia or Lecanidae
Genus: Coccus
Species: C. hesperidum L.

Bibliographic reference:
Phytopathology, agricultural entomology and applied biology” – M.Ferrari, E.Marcon, A.Menta; School edagricole - RCS Libri spa

Host plants: Citrus, Fig, Olive, Laurel, Ornamental plants, etc.

Identification and damage

Coccus hesperidum is a widely spread polyphagous species; it is also present in greenhouses on ornamental plants and frequently attacks citrus fruits. The adult female (about 3.5-4 mm long) is oval in shape, with a depressed body and a yellow-brown color. Juvenile forms are lighter in color than adult females. Coccus hesperidum preferably lives on the twigs and on the underside of the leaves, where it forms colonies along the ribs. The damage occurs on the leaves and is caused by trophic stings and honeydew production; the affected vegetation shows strong yellowing and is smeared with honeydew, on which fumaggini are formed; in case of massive attacks, severe phylloptosis can occur.

Biological cycle

The phytophagous winters as a neanid and completes several generations a year.

Low cochineal of citrus fruits - Coccus hesperidum L. (photo http://macroclub.ru)

Fight

As for the fight, refer to the other Cochineals with which control is generally combined.


Video: How to Manage Citrus Scale Insects (January 2022).