Fig. 3
From: Photoreceptor genes in a trechine beetle, Trechiama kuznetsovi, living in the upper hypogean zone
A maximum likelihood tree for visual opsin genes. Bootstrap probabilities are provided on nodes. OTU names consist of the abbreviated species names, gene names and accession numbers: Tkuz, Trechiama kuznetsovi; Pcha, Pogonus chalceus; Gmar, Gyrinus marinus; Tmar, Thermonectus marmoratus; Tcas, Tribolium castaneum; Amel, Apis mellifera