Thor
Creators: name: Komai, Tomoyuki
name: Okuno, Junji
name: Minemizu, Ryo
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Hippolytidae
Thor

description: Key to the Indo-West Pacific species of Thor
1. Supraorbital tooth present............................................................................... 2
1. Supraorbital tooth absent................................................................................ 4
2 Antennular stylocerite with small erect tooth on dorsolateral margin proximally; chela of first pereopod stout, not markedly tapered.............................................................................................. 3
2 Antennular stylocerite without small erect tooth on dorsolateral margin proximally; chela of first pereopod slender, tapered....................................................................... T. leptochelus (Xu & Li, 2015) n. comb.
3. Telson with posterior margin bearing 2 pairs of spines and 1 mesial pair of plumose spines or setae, but without median tooth; fourth and fifth pereopods with dactyl fully 3.0 times as long as wide.......................... T. spinipes Bruce, 1983
3. Telson with posterior margin bearing acute medial tooth, flanked by 2 pairs of spines and 2 mesial pairs of plumose setae; fourth and fifth pereopods with dactylus twice as long as wide............................... T. spinosus Boone, 1935
4. At least third maxilliped and first pereopod with strap-like epipods.............................................. 5
4. Third maxilliped and first pereopods without strap-like epipods................................................. 6
5. Second pereopod with strap-like epipod............................................... T. singularis Xu & Li, 2015
5. Second pereopod without strap-like epipod.......................................... T. hainanensis Xu & Li, 2014
6. Stylocerite of antennular peduncle with small erect tooth near proximal end....................................... 7
6. Stylocerite of antennular peduncle without small tooth near proximal end..................... T. paschalis (Heller, 1862)
7. Telson with 1 pair of barely visible dorsolateral spines in posterior one-fourth of length....... T. intermedius Holthuis, 1947
7. Telson with 2–5 pairs of distinct dorsolateral spines.......................................................... 8
8. Rostral apex acuminate; telson bearing 4 pairs of posterior spines; first pereopod with chela not tapered or compressed.................................................................................. T. amboinensis (De Man, 1888)
8. Rostral apex typically subtruncate with 3 or 4 teeth; telson bearing 3 pairs of posterior spines; first pereopod with chela tapered and compressed................................................................... T. marguitae Bruce, 1978
description: Published as part of Komai, Tomoyuki, Okuno, Junji & Minemizu, Ryo, 2015, New records of two species of the coral reef shrimp genus Thor Kingsley, 1878 (Crustacea: Decapoda: Thoridae) from the Ryukyu Islands, Japan, pp. 399-412 in Zootaxa 4013 (3) on page 411, DOI: 10.11646/zootaxa.4013.3.4, http://zenodo.org/record/241262