Haustorius jayneae Foster & LeCroy, 1991

Hancock, Zachary B. & Wicksten, Mary K., 2018, Two new species of sand-burrowing amphipods of the genus Haustorius Müller, 1775 (Amphipoda: Haustoriidae) from the northwestern Gulf of Mexico, Zootaxa 4459 (1), pp. 101-127 : 103

Haustorius jayneae Foster & LeCroy, 1991

Haustorius jayneae, Foster & LeCroy, 1991: 259 –270, figs. 1–4. Haustorius new species, Saloman & Naughton, 1977: 359– 352. Haustorius species, Saloman & Naughton, 1977: 67–68.

Diagnosis. Antenna 1, flagellum with 9 articles, accessory flagellum with 4–5 articles; antenna 2 with 10 articles; mandible incisor bifid, with 8–10 accessory blades; mandibular palp, article 3 with 17 spines in comb row; maxilla 2, outer plate lunate, narrowing distally to a slight point; maxilliped, outer plate broad, anterior angle obtuse with toothlike spines on 1/4 length of oral margin; coxa 1 deeper than wide; pereopod 3 article 5 posterior lobe greater than 1.2x length of anterior margin; pereopod 6, article 4 posterior margin distinctly rounded distally with 4 large spines; pereopod 7, article 5 subrectangular with proximal and distal margins parallel, posterior margin 1/2 length of anterior, with spines 1/2 length of distal margin; uropod 1, peduncle with 1–3 proximal spines, 2–3 interramal spines, 1–3 distal setae; telson without posterodistally produced region, posterior margin relatively flat, acutely cleft.

Range. Carrabelle Beach, Florida to Mississippi Sound.

Remarks. Sweet (1996) identified two new haustorius-like species west of the Mississippi River in Pass Christian, MS, Dauphin Island, AL, and Carrabelle Beach, FL. However, we located only Lepidactylus triarticulatus at Pass Christian and H. jayneae at the latter locations. This represents a range extension for H. jayneae southward from Cape San Blas, its original southern range, to at least Carrabelle Beach, where it was found in considerable numbers.