Adult bugs appear black in color with red thorax and greenish brown wings. They look like any other mosquito species and hence the name mosquito bug.
A characteristic knob is present on the scutellum. These bugs are active early in the morning and late in the evening.
Each female bug can insert as many as 500 eggs in plant tissues. The eggs hatch in about a week's period by releasing the nymphs. After passing through five moltings adults in a fortnight's period. The entire life cycle is completed in about a month.they turn into
In a year there may be several generations. Adults hibernate during winter. These insects are active from January to September. Their damage is predominant in moist and shaded areas especially after monsoon showers.
The adult and nymphal stage of H. theivora causes damage of serious nature to the tea plantation. The nymph and adult inserts their proboscis into the young leaves, buds and tender shoots to suck the plant sap. The toxin injected through saliva of the pest causes the tissues around the punctured snot to dry and die.
The larval tunnels provide entry points for bacteria and fungi that cause the fruit to rot. When only a few larvae develop, damage consists of an unsightly appearance and reduced marketability because of the egg laying punctures or tissue break down due to the decay.
The affected portion becomes brown and later on becomes black. The leaves having many such black spots shrivel and eventually fall off. The infected shoot also show such spots winch extends to almost whole plant. The bushes severely affected by this pest look as if they have been torched by fire