What does a pea aphid look like?
Description of the Pest The pea aphid is a large green aphid with long legs, antennae, cornicles, and cauda. It is very similar in appearance to the blue alfalfa aphid, but they can be distinguished by examining the antennae.
Why do pea aphids explode?
In an extreme version of the clotting process, the bugs suicidally erupt to save their nest.
How do pea aphids reproduce?
Aphids reproduce by thelytokous parthenogenesis in spring and summer under conditions of long day length and high temperatures. In aphids with a holocyclic life cycle, males and oviparous (sexual) females appear in late autumn and produce fertilized eggs for overwintering. Aphids employ the XO sex-determination system.
How big is a pea aphid?
about 1/6 inch
Pea aphid is about 1/6 inch (4 mm) long and ranges in color from light to dark green. Prolonged periods of cool temperatures [50°F to 60°F (10°C to 15.5°C)] and dry conditions are conducive to the development of pea aphid populations. Up to twenty generations develop during the season.
How long do pea aphids live?
The life span of an adult is about 30 days. Population densities are at their highest in early summer, then decrease through predation and parasitism.
Why do aphids secrete honeydew?
What Is Aphid Honeydew And What Causes It? Aphid honeydew is perhaps the most common form of honeydew you’ll find on plants. It’s created when an aphid pierces the plant’s phloem ducts with its mouthparts, creating enough pressure that the sap passes straight through the aphid’s body and escapes as excrement.
How are aphids born pregnant?
Most aphids are born pregnant and beget females without wastrel males. These parthenogenetic oocytes result from a modified meiosis that skips the reduction division, maintaining diploidy and heterozygosity. Embryos complete development within the mother’s ovary one after another, in assembly line fashion.
What do pea aphids eat?
alfalfa plants
Both adults and nymphs suck juices from alfalfa plants. Under heavy infestations, this feeding can cause alfalfa to turn yellow and wilt. The top of such infested plants will die if subjected to excessive feeding.
Why do ants protect aphids?
The ants provide protection from any predators that might go after the aphids. The aphids, in return, provide food for the ants. All aphids excrete a waste product called honeydew. Ants love this sticky stuff because it provides a sugary meal that gives the ants energy.
Do aphids poop honeydew?
Aphids suck a lot of juice so, of course, they expel a lot of poop. Aphid poop (called “honeydew”) is sticky and very high in sugars processed from the plant’s juices. (“Frass” is the general term for insect poop.)
Do aphids give birth?
Most of the time, aphids just clone themselves. You can see the eyes of her clones growing inside her. Her babies are born already pregnant. In a week or two, they’ll start giving birth to clones of their own.
Where do aphids lay eggs?
On evergreen host-plants aphid eggs are commonly laid on leaves. Below (first) are Cinara acutirostris eggs laid single-file along a needle (note the damaged or infertile egg), and (second) Cinara pini (these eggs, being small, are not laid in a single row).
What does an aphid eat?
Aphids are soft-bodied insects that use their piercing sucking mouthparts to feed on plant sap. They usually occur in colonies on the undersides of tender terminal growth.
How can aphids reproduce without mating?
Aphids Can Reproduce Without Mating (No Males Needed!) With few exceptions, aphids in spring and summer are all females. The first wingless matriarchs hatch from eggs in early spring (from eggs laid late the prior year to overwinter), equipped to reproduce without the need for male mates.