Fig. 1 in The loricariid catfish genus Lasiancistrus (Siluriformes) with descriptions of two new species

Fig. 1. Pterotic, right side, ventral view: a. Ancistrus pirareta, UMMZ 206085, b. Lasiancistrus guacharote, INHS 60465. Scale bars = 1 mm. Shaded area is cartilage. APT = anterior process of the pterotics, PR = prootic, PT = pterotics, and PTS = pterotics strut (forms over the open dilatator operculi chamber).