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Pulvinaria innumerabilis (cottony maple scale) is a small, flattened, brown scale insect about 1/8" long. In early summer mature females begin to secrete white, waxy, cottony-appearing egg sacs in which they lay as many as 1,500 eggs. Severely infested trees look like they are covered with strings of popcorn.
Females suspend their egg sacs in their webs; the spherical egg sacs have a tan papery outer layer. [3] Each egg sac contains from 150–200 eggs, with a single female producing 15–20 egg sacs in its lifetime. [citation needed] The spiderlings remain in the mother's web for several days after coming out of the egg sac. [5]
Male genitalia of Lepidoptera. The main component of the male reproductive system is the testicle, suspended in the body cavity by tracheae and the fat body.The more primitive apterygote insects have a single testis, and in some lepidopterans the two maturing testes are secondarily fused into one structure during the later stages of larval development, although the ducts leading from them ...
Bolas Spider egg sac with eggs inside. The egg sacs of the M. hutchinsoni are spherical in shape with an extended stem typically surrounded by multiple protective layers and an off-white silk. The globose vessels have a diameter around 8 mm while the connected stem extends up to thirty-six millimeters. The base of the egg is typically attached ...
The egg sac of the triangulated cobweb spider is made from loosely woven silk, and is about the same size as the spider itself. Each egg sac contains approximately 30 eggs. They may reproduce via parthenogenesis. Cobweb spiders typically live on windows or in dark areas.
Once the spider is ready to lay eggs, the C. brunnea larva will quickly move into the sticky fluid the spider is using to construct the egg sac and thus the larva becomes trapped within the sac. Inside, the larva will use its specially adapted sucking tube (made from its maxilla and mandibles) to feed off the spider eggs within the sac. [3]
Oothecae are made up of structural proteins and tanning agents that cause the protein to harden around the eggs, providing protection and stability. [1] The production of ootheca convergently evolved across numerous insect species due to a selection for protection from parasites and other forms of predation, as the complex structure of the shell casing provides an evolutionary reproductive ...
The female deposits her eggs in a globular silken container in which they remain camouflaged and guarded. A female black widow spider can produce four to nine egg sacs in one summer, each containing about 100–400 eggs. Usually, eggs incubate for twenty to thirty days. It is rare for more than a hundred to survive this process.