I have some confusion with the differentiation of Leander paulensis and Leander tenuicornis, specifically with the character of the anterior margin of the basal antennular segment, being convex for L. paulensis, and concave or straight for L. tenuicornis. But What is the anterior margin which I have to observe? I mean, does anybody has a scheme or a drawn or something graphic that could help me in aiming the position of the character?. Thanks a lot for your attention. Greetings