Ar. multispinosus:

BMNH 1865.7.20.34 (holotype), Nicaragua, Lake Managua; UMMZ 180621 (1, dig.), Nicaragua, Lake Nicaragua at Granada; UMMZ 199539 (26, 2 C&S, XR, 16 dig.), Honduras, Rio Patuca, canal to Brus Laguna ; UMMZ 213939 (5, dig.), Nicaragua, Rivas, RioCanas Gordas ; UMMZ 228679 (6), Honduras, Gracias a Dios, Rio Rapa .