Besides the aphids, other insects, such as scale insects (Coccidae), caterpillars of blue butterflies (Lycaenidae), and numerous beetles, furnish the ants with nutrient secretions.
By far the most destructive insects in warm climates belong to the Hemiptera, especially to the Coccidae or scale insects.
The Coccidae can, and mainly do, breed asexually (parthenogenetically).
- The Hop Aphis (Phorodon After the Coccidae the next most important insects male; C, ovigerous wingless female; economically are r the plant lice or A phididae.
Usually there are four excretory (Malpighian) tubes; but there are only two in the Coccidae and none in the Aphidae.
In the male Coccidae (Scale-insects) the nymph (fig.
The two families to which special attention has been paid are the Aphidae or plant-lice (" green fly ") and the Coccidae or scale-insects.
The Coccidae have only a single claw to the foot; the males (fig.
Fernald's Catalogue of the Coccidae (Amherst, U.S.A., 1903).
Newstead's British Coccidae (London, Ray Society, 1901-1903).
Galls are formed also by hemipterous and homopterous insects of the families Tingidae, Psyllidae, Coccidae and Aphidae.
It consists of the females of Coccus cacti, an insect of the family Coccidae of the order Hemiptera, which feeds upon various species of the Cactaceae, more especially the nopal plant, Opuntia coccinellifera, a native of Mexico and Peru.
SCALE INSECT, a name given to insects belonging to the family Coccidae of the homopterous division of the Hemiptera and deriving their name from the formation by the females of a waxy secretion which often hardens into a protective scale beneath which the insects live.