The genus Calyptra is a group of moths in subfamily Calpinae of the family Noctuidae. They are a member of the Calpini tribe. whose precise circumscription is uncertain but includes a number of other fruit-piercing or eye-frequenting genera currently classified in the subfamily Calpinae [1].
The common name of many of these species, "vampire moth," refers to the habit that they have of drinking blood from vertebrates. According to a recent study some of them (Calyptra thalictri) are even capable of drinking human blood through skin [2]
Some species of this genus have been classified with genus name Calpe and they include
more than one blood-sucker.
http://en.wikipedia.org/wiki/Calyptra_(genus)
-Also, the World's Smallest Bat. The Bumblebee bat:-http://web.cecs.pdx.edu/~timm/dm/bumblebee.html
