### Identification To find *Adroctenes horvathi*, you must look where most fear to tread: deep within the fur of an African horseshoe bat. This bizarre, wingless insect looks less like a typical bug and more like a mahogany-colored piece of living armor. Measuring roughly 3.5 to 4 mm, its body is dramatically flattened dorso-ventrally—an adaptation for sliding between dense hairs. Look for the ctenidia, or "combs": rows of stiff, rake-like spines on the head and thorax that act like grappling hooks, locking the insect into the host's fur so it cannot be groomed off. Unlike the common bed bug, *A. horvathi* is eyeless and has elongated, four-segmented antennae that it uses to navigate its dark, tactile world.
### Habitat & Range This is a specialist of the shadows. Its range is strictly tied to its hosts across East Africa, particularly in the cave systems of Kenya, Ethiopia, and Somalia. You won't find them on vegetation; their "ecosystem" is the living skin and fur of bats in the genus *Rhinolophus*. They thrive in the humid, stable microclimates of lowland subterranean roosts where temperatures remain constant year-round.
### Behaviour *A. horvathi* is a permanent ectoparasite; it is born, breeds, and dies without ever leaving the body of a bat. An observer lucky enough to view one under a macro lens would see a surprisingly fast-moving creature that "swims" through fur. They are highly host-specific and sensitive to vibrations; if the bat takes flight, the bug hunkers down, using its specialized combs to resist the g-forces of aerial maneuvers.
### Diet These insects are obligate hematophages. Using specialized piercing-sucking mouthparts, they tap into the rich capillary beds of the bat’s wing membranes or ears. Because they live on a "mobile feast," they feed frequently in small intervals, ensuring they are always engorged and ready for reproduction.
### Fascinating Fact *Adroctenes horvathi* practices pseudoplacental viviparity. They don't lay eggs! Instead, the mother nurtures a single larva inside her body, feeding it through a specialized internal tissue that functions much like a mammalian placenta. She eventually "gives birth" to a nearly mature larva that pupates almost immediately—a brilliant strategy to ensure the offspring isn't lost in the dark abyss of a cave floor.