Dardanus

Parente, Manuel Ayón & Hendrickx, Michel E., 2009, 2323, Zootaxa 2323, pp. 1-71 : 4

Key to the species of Dardanus from the eastern Pacific

1. Outer face of palm of the left cheliped with spine-like tubercles on proximal 2/3 and, scale-like tubercles on distal third, spines and scales fringed anteriorly with very short simple setae. Palm with numerous rounded spine-like tubercles and scattered tufts of long stiff setae or bristles on the lower margin ...................... Dardanus nudus n. sp.

- Outer face of the palm of the left cheliped and outer face of dactyl and propodus of the left third pereopod with scale-like tubercles fringed distally with plumose setae.............................................................................................. 2

2. Ocular peduncles 0.67 length of shield; left cheliped with 8 to 11 molar teeth on the cuting edge of fixed finger; smaller rounded teeth or granules on subdistal margin of palm .................... Dardanus sinistripes ( Stimpson, 1859)

- Ocular peduncles less than 0.67 length of shield; left cheliped with 5 or 6 molar teeth on the cuting edge of fixed finger; subdistal margin of the palm withouth small teeth or granules........................................................................ 3

3. Scales on outer face of left cheliped and left dactyl of third pereopod fringed with long plumose setae ................... 4

- Scales on outer face of left cheliped and left dactyl of third pereopod fringed with short to moderately short plumose setae.............................................................................................................................................................................. 5

4. Ocular peduncles 0.60 length of shield; antennal acicle terminating in strong, single, corneous-tipped spine, exceeding slightly basis of cornea, dorsomesial margin with 5 small spines ........................ Dardanus pilosus n. sp.

- Ocular peduncle 0.35–0.50 length of shield; antennal acicle short, not reaching base of cornea, terminating in strong, bifid spine, dorsomesial margin with 5–7 small spines .................................................. Dardanus janethaigae n. sp.

5. Lower margin of left cheliped with row of strong, triangle-shaped corneous spines on distal middle. Dorsolateral and ventrolateral margins of the left third pereopod dactyl obscured partially with tufts of long setae ............................... .................................................................................................................................... Dardanus magdalenensis n. sp.

- Row of strong, triangular-shaped corneous spines along lower margin of left cheliped. Marginal setae of scales of the left third pereopod dactyl and propodus never exceeding tip of spines on dorsolateral and ventrolateral margins ...... ............................................................................................................................................. Dardanus stimpsoni n. sp.