winged forms have a dark head and thorax. Cannabis aphids have long antennae (1.1–2.2 mm) and between these are two short knobs (antennal tubercles).…
four larval instars, a pupal instar, and the adult. The adult insects are 1 to 5 mm long, grey-black flies with long antennae. They have relatively…
they are also called larva (1st stage) and nymph (2nd stage). The first nymphal stage is a transparent white colour and about 0.1 mm long. They…
across the body. The antennae are 0.7-1.0 times the body length, reaching to the siphunculi. The body length is 1.2-2.3 mm. Damage symptoms Nymphs and…
can oviposit for the first time). After mating the females lay their small (~1 mm long), white, sausage-shaped eggs (singly, or in bunches of 25–30)…
nymphal stages and adult. The nymphal stages are sometimes also called larva (1st stage) and nymph (2nd stage). The eggs are approximately 0.05 mm in…
food source. Even the winged forms can be red. Wingless potato aphids are 1.7 - 3.6 mm long, elongated, with a dark longitudinal stripe running along…
, food source and the density of the population. Large individuals (up to 1.8 mm long) are usually dark green to black, while aphids produced in…
adult stage of the greenhouse potato aphid is rather squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It has a light yellow-green to…
adults reach reproductive maturity within 2 or 3 days, oviposition begins about 1 or 2 days after mating and adults live for several months. Females…
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