Reversing strange insects with reproductive organs

A group of international scientists from Japan, Brazil and Switzerland have discovered a new exotic insect in Brazil. In which the male has 'vagina', the female owns . penis.

The penis is always the characteristic sexual organ of males in every species. However, a newly discovered species called Sensitibillini in the cave in Brazil has made scientists extremely surprised when there is a complete 'reverse' genitalia.

Sensitibillini is made up of three different genera named: Afrotrogla, Neotrogla and Sensitibilla .

The strange insect in the cave in Brazil has the male and female reproductive organs developed 'inverted'.

Previously, researchers have discovered that Neotrogla in Brazil four years ago showed signs of genital reversal between males and females.

To be able to mate with each other, the offspring of these insects often 'anchor' the penis-like genitalia into the male's ' vagina ' bag for a long period of time (40-70 hours) to Can get enough volume of semen.

However, despite being listed in the same species, Genus Sensitibilla has no reversible genitalia.

To find out if the reversal mating characteristics have progressed in the same way, scientists have studied all three genera and found that they tend to evolve independently.

According to information published in Biology Letters, the shape of the penis in the genus Neotrogla and Afrotrogla varies considerably.

The question that led researchers to suffer is why the two related genera in this species tend to evolve such genitalia? The recent answer was found.The cause is determined by the habitat of this animal has special characteristics . In caves where these insects live do not contain much food, the male becomes interested in finding a meal rather than finding a mate.

Over time, this made the children take on the role of pursuers and actively mated. Not only that, the female's "penis" has developed into a hook to ensure that the male cannot escape before they collect enough sperm.

In addition, the researchers found that the sex organs of both males and females were developed simultaneously to facilitate mating.