All cases of fluid in the ear are caused by some form of auditory tube dysfunction which prevents your eustachian tube from adequately draining. Common causes for developing fluid in the ear for both adults and children includes: Allergies. Any kind of congestion, from a cold virus, similar infection, or even pregnancy.
Latrodectus hesperus. The female black widow spider is considered the most venomous spider in North America. The venom of the black widow spider is 15 times as toxic as the venom of the prairie rattlesnake. Only the female black widow is dangerous to humans; males and juveniles are harmless. The female black widow will, on occasion, kill and eat the male after mating. More than 35,000 species of spiders occur worldwide. About 3,400 species of spiders in 64 families are found in North America.
Immature Black Widows have the same shape as the mature Widow but with dramatic color markings. An immature Widow, although much smaller that an adult, can still cause a painful and dangerous bite. As you can see, the characteristic hourglass marking is yellowish, not red, in this young female spider.