Lame Dude
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Male Widow Spiders Inseminate Young Females And Avoid Being Cannibalized: Spidery Sex Life | TechieTonics
The male spiders carry out this behavior just at the right time, a few days before the final molting, when the genitals are fully matured but not yet exposed.
techietonics.com
The co-author of the study, Maydianne Andrade of the University of Toronto Scarborough observed this behavior while conducting unrelated research on two widow spider genus. The research revealed that though in the juvenile stage, the genitals of the females were well developed, but remain sealed. The juvenile female bodies are covered with shell like-exoskeleton. The males of both these species use fangs to cut open the female exoskeleton and enter their genitals to deposit their sperm in the females’ sperm receptacles, called spermathecae.
TLDR; Spiders inseminate females before they have matured to avoid being cannibalized, and potentially to avoid competition.
I am seeing some similarities.
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