Adult females active, covered with mealy secretion; antennæ of seven joints; no hairs on anogenital ring. Eyes of male not facetted.
This subdivision, which includes the single genus Coccus, of which there would seem to be not more than one distinct species—Coccus cacti (the cochineal insect)—and two or three varieties, has not yet any representatives in New Zealand.
Adult females active or stationary; naked, or covered with mealy, cottony, or waxy secretion; segmented; antennæ of ten or eleven joints; anterior pair of feet similar to the rest; anogenital ring without hairs; anal tubercles inconspicuous.
Males with facetted eyes and no ocelli.
Strictly speaking, the wings of the males of this group should, according to its name, present only a single nervure. This, however, is not the case, or, rather, it should be said that the nervure is precisely similar to that of all other Coccids, branching once, so that it cannot form a distinctive character. Possibly the name of Monophlebus was originally given by Leach to an abnormal or imperfect specimen.