Insects on cock for sex

In desolate caves throughout Brazil live insects that copulate for days, the female's penetrating erectile organ sticking fast in a reluctant male's genital chamber until he offers a gift of nutritious semen. Not all animal species have a male penis, but because the evolution of body parts usually works through slow modification of existing structures, there would need to be a good reason for a female to develop a penetrating organ, says entomologist Kazunori Yoshizawa of Hokkaido University in Japan, a co-author of the study. Entomologist Charles Lienhard at the Geneva Museum of Natural History in Switzerland recognized them as a new genus — and also as possessing unusual genitalia. Hold on tight When the flea-sized winged insects mate, the female mounts the male and penetrates deep into a thin genital opening in his back. Membranes in her organ swell to lock her in, and multiple spiky spines act as grappling hooks to anchor her tightly to the male.
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Female Penis, Male Vagina: First Case of Genital Reversal in Nature Reported

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Female Penis, Male Vagina: First Case of Genital Reversal in Nature Reported | Live Science

Females with penislike genitals and males with vaginalike organs are cases of a new extreme reversal of sex roles researchers have discovered in little-known cave insects. These are the first examples of animals with genitalia that reverse the traditional sex roles, and the discovery could shed light on the conflict between the sexes in the animal kingdom, investigators said. Scientists analyzed four species of insects from extremely dry caves in Brazil. All four species belong to the genus Neotrogla, just as dogs, wolves, coyotes and jackals belong to genus Canis.
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Female Insect Uses Spiky Penis to Take Charge

Some insects — like the female praying mantis — are known to devour puny male partners soon after mating. A male on the prowl comes equipped with a spiny " dagger penis ," which the bug uses to forcibly stab its way into a female's abdomen, ejaculating once inside. Now, a new Swedish study has shed more light on the ramifications of this unusual reproduction technique. Here, a brief guide to the six-legged critter's scary mating ritual:.
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You think you're naughty and transgressive? Humans just don't get that freaky compared to insects. An ongoing evolutionary tug of war to control fertilization has led to appallingly rough sexual practices in bugs.
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