Sicado

A half cicada, half larva like demon. Despite it looking like it has an underdeveloped body, it is fully mature with the ability to produce offspring. As soon as it gives birth to its grub, another will already start forming in this demonic insect's stomach. Its wings are a bright crimson and help it fly swiftly through the sky. They seem to appear out of nowhere, yet, the truth is that they live within the crooked trees that grow in the depths of Hell and can easily travel to and from Earth and their home.

There are an unknown number of existing Sicadoes.  They also seem to act independently.

This bug latches on the backs of the head of their surprised prey. It'll use their feeding tube and tentacles to drain the male's energies from his mind, making him unable to move a muscle. After the guy has been drained, it will lay a worm that grabs onto the guy's crotch becoming a permanent fixture which feeds on dick milk. After that, the mature Sicado will fly off to find other men to reproduce.

The worm is blind but will follow the scents of sem*n. When it has attached itself, it's impossible to remove it without the help of magic. It'll also imitate the appearance and movement of its host's cock. The larva will feel and have the same sensitivities as the guy's cock too.

During the first few days, the host will feel a strong need to stoke his new "appendage". However, as time goes by, he'll lose interest in stimulating his worm cock, as he'll begin to feel an "itch" from his prostrate. He'll eventually only want to c*m from stimulating his asshole. Once he becomes a total bottom, the grub will cleanly sever his cock and balls, making him have a smooth groin. The dickless guy will be a true hole to be used for other men.

Following the feeding from the human, the detached worm will crawl and find a place upside down to begin forming a chrysalis. It will stay in its pupa form for a week before emerging as a fully grown Sicado. The full lifespan on a Sicado is two month, but, it can stay in a dormant, sleeping, stage for many years.

Sicadoes grow to 70cm long and its offsprings are about 50~60cm