What is "bertrana"

Bertrana is a spider genus that occurs from Central to South America. It includes some of the smallest known araneid orb-weavers. Bertrana striolata females are 4.5 mm long or less. The eight eyes are in two rows. The abdomen is white on top and on the sides, with multiple hieroglyphic-like lines and bars of many differente shapes and length. In females, these are red, in males, black.