FIGURE 11. Leptalpheus marginalis Anker, 2011 in First known occurrence of the alpheid shrimps Leptalpheus forceps Williams, 1965 and L. marginalis Anker, 2011 (Decapoda: Caridea) in the state of Pará, Amazon region, Brazil

FIGURE 11. Leptalpheus marginalis Anker, 2011 from the Ajuruteua Peninsula in the Bragança region of the state of Pará, Amazon region, northern Brazil. (A) ♂ specimen (CL=4.3 mm; TL=11.2 mm); (B) ♂ specimen (CL=3.5 mm; TL=12.2 mm); (C) ♂ specimen (CL=4.9 mm; TL=9.5 mm); (D) ♂ specimen (CL=3.6 mm; TL=9.5 mm): (A–C), uropods, dorsal view (setae omitted), scale bars=1 mm; (D) third maxilliped, lateral view, scale bar=0.5 mm.