There are butterfly-vampires

Not all butterflies are beautiful. Among them there are also real vampires who feed on the blood, including human. Butterfly-bloodsuckers found in Siberia. They turned shovels or moths. Yes, the very large moths, which in the evenings and at night flock to the light, is not averse taste of human blood.

Prick proboscis quite painful. The bite does not itch, but a small wound can bleed for a long time. If the butterflies are not driven from the bite, they can suck blood from 5 to 20 minutes. Drink the blood of only males. Females feed on plant sap and fruit. Externally, the vampires are different from their vegetarian counterparts and females of their own species - in their wings there is a certain pattern.

The question is - and what they still need blood? It's not just because they went to such exotic cuisine. There are the following assumption, which, however, is still uncertain. The animal blood contains salt, which males transfer to the female during mating. This "unusual sexy gift" provides salt butterfly larvae. Salt, sodium or rather, they need for normal development.