Pseudocoutierea dotae Grave, 2007, sp. nov.
Creators: name: Grave, De
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Palaemonidae
Pseudocoutierea
Pseudocoutierea dotae

description: Pseudocoutierea dotae sp. nov. (Figs. 1­5)
Material examined. Holotype, non­ovigerous female (post­orbital carapace length (pocl) 2.4 mm), from Stichopathes lutkeni Brook (Anthozoa, Antipatharia); Hospital Point, Cayo Solarte, Bocas Province, Panama, 09º20.016’N 082º13.133’W, ­ 15 m depth; collected by S. De Grave & M. Salazar, 06/08/2005 (NHM 2006.1930)
Comparative material examined. Pseudocoutierea wirtzi d’Udekem d’Acoz, 2001; 8 specimens (paratypes, pocl 1.9­2.5 mm), São Tiago Island, Cape Verde Islands, on Leptogorgia gaini Stiasny, 20­30 m depth, collected by P. Wirtz, December 1998 (KBIN IG.28546); ovigerous female (pocl 4 mm), male (pocl 3.4 mm), São Tiago Island, Cape Verde Islands, on Stichopathes lutkeni, 20­30 m depth, collected by P. Wirtz, February 2000 (KBIN IG.28871). Pseudocoutierea antillensis Chace, 1972; 2 specimens (pocl 1.1, 1.3 mm), Pelican Point, Cayos Grande, Cayos Cochinos, Honduras, from Pseudopterogorgia americana (Gmelin), 4.6­ 16.7 m depth, collected by M. Dowell & D. Livingston, 01/07/2003 (OUMNH ZC. 2204­17 ­004).
Description. Carapace broad, depressed (Fig. 1 A), well­developed antennal spine present (Fig 1 A, C), immediately below this spine is a acuminate lobe, giving the antennal spine a bifid appearance in lateral view (Fig. 1 C); blunt hepatic protuberance present (Fig. 1 A, B, C); pterygostomial sinus well developed (Fig. 1 C); carina present between the middle of the pterygostomial sinus and the post­hepatic protuberance, extending beyond protuberance (Fig. 1 A, C); orbital ridge well­developed.
Rostrum apically inclined, unarmed, tip acute, reaching to end of antennal scale (Fig. 1 A, B); proximal half expanded to form a relatively broad supra­orbital eave (Fig 1 B), frontal margin of supra­orbital eave gently curving; longitudinal carina present on supra­orbital eave, continuing distally past supra­orbital eave and expanding onto carapace up to the level of the post­hepatic protuberance (Fig. 1 B).
First thoracic sternite with a low transverse ridge, median boss present; second thoracic sternite with welldeveloped transverse ridge, with broad median notch; other sternites unadorned.
Pleura of third to fifth pleonite with postero­ventral acuminate tooth (Fig. 1 D), more developed on fifth pleonite; pleura of third and fourth pleonite dorsally acuminate (Fig. 1 D). Sixth pleonite 1.6 times as long as fifth, 0.75 times as long as telson; dorsolateral lobe of sixth pleonite well developed, acuminate (Fig. 1 D).
Telson nearly three times as long as wide (Fig. 2 D), tip convex; two pairs of dorsolateral spines, situated at 0.6 and 0.8 of telson length respectively; telson tip with 3 pairs of robust spines, outer pair and mesial pair about 0.35 times as long as intermediate spines, mesial spines setose.
Eyestalks large, broad, cornea not broader than unpigmented part.
Antennular peduncle robust (Fig. 2 A); stylocerite short; lateral margin of first segment sinuous, distolateral tooth well developed, reaching to about 0.75 of second segment, pronounced tooth present on ventral side (Fig. 1 C, 2A); third segment about 1.8 times as long as second segment. Outer antennular flagellum fused for 3 segments, free part of accessory flagellum well developed, consisting of two segments, 0.7 times as long as fused part (Fig. 2 A)
Scaphocerite overreaching antennular peduncle, broad (Fig. 2 B), 2.5 times as long as wide, outer margin straight, distolateral tooth falling far short of distal margin.
Mouthparts (except third maxilliped) not dissected. Third maxilliped short (Fig. 2 C), reaching to end of basicerite; exopod absent; lateral plate well developed, rounded, small bilobed arthrobranch present; basis fused with ischiomerus (antepenultimate segment); antepenultimate segment about 2.5 as long as penultimate segment, ultimate segment about 0.8 times as long as penultimate, tip furnished with numerous long setae (Fig. 2 C).
First pereiopod robust, over­reaching scaphocerite by 0.2 of its length (Fig. 1 A); basis and ischium near equal in length (Fig. 3 A); merus curved, about 2.3 times as long as ischium; carpus about 0.8 times as long as merus. Chelae robust, fingers about half as long as palm, palm about 0.45 times as wide as long.
Left second pereiopod robust (right one missing), carpus reaching not reaching end of scaphocerite (Fig. 1 A); ischium about 1.1 times as long as merus (Fig. 3 B); carpus about 0.6 times as long as merus; chelae robust, fingers about 0.7 times as long as palm, both movable and immovable finger with single, terminal, curved tooth (Fig. 3 C)
Third pereiopod robust (Fig. 4 A); merus slightly curved, nearly twice as long as ischium, hook shaped protuberance present on distal part of flexor margin (Fig. 4 B); carpus 0.3 times as long as merus; propodus as longs as merus, single spine on infero­distal, together with three simple setae (Fig. 4 C); dactylus short (Fig. 4 C), stout, curved.
Fourth (Fig. 4 D) and fifth (Fig. 4 E) pereiopods similar to third pereiopod in form, length and proportions.
Uropods over­reaching telson (Fig. 1 D), exopod and endopod equal in length (Fig. 2 E); distolateral tooth of exopod well­developed, without movable spine between blade and distolateral tooth(Fig. 2 E).
Colour description. Body generally transparent (Fig. 5); white transverse band on carapace (V­shaped in dorsal view); proximal white transverse band on first pleonite; distal white transverse band on third, fifth and sixth pleonite; eyestalks and cornea white, connected with white transverse band; scattered yellow chromatophores on first and second pereiopods, scaphocerite and tailfan.
Derivation of name. In memory of Ms Dorothea “Dot” Pelham, long­term staff member of the Oxford University Museum of Natural History, the name is a genitive.
Habitat. The single specimen was obtained from a colony of Stichopathes lutkeni (Anthozoa, Antipatharia) at a depth of 15m.
description: Published as part of Grave, De, 2007, A new species of Pseudocoutierea Holthuis from the Caribbean coast of Panama (Crustacea, Decapoda, Palaemonidae), with a key to the genus, pp. 29-37 in Zootaxa 1397 on pages 30-35, DOI: 10.5281/zenodo.175343