Hiplyra sagitta Galil, 2009, n. sp.
Creators: name: Galil, Bella S.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Leucosiidae
Hiplyra
Hiplyra sagitta

description: Hiplyra sagitta n. sp.
(Figs 11; 12A)
Philyra platychira – Alcock 1896: 242.
Philyra platycheir – Tirmizi & Kazmi 1988: 100, fig. 29.
TYPE MATERIAL. — Holotype: Persian Gulf. Boushir, 7 m, 18.III.1937, coll. G. Thorson, 1 ♂ cl 13.9 mm (ZMK 4263).
Paratypes: same data, 1 ♂ cl 13.3 mm, 1 ovig. ♀ cl 12.1 mm (ZMK 4263).
Kuwait. 29°11’N 48°29’E, 12.5-16 m, 20.III-17.V.1972, coll. H. Motoh, 1 ♂ cl 16.0 mm cl, 1 ovig. ♀ cl 17.2 mm (NSMT 4500).
Andamans. 1 ♂ cl 14.9 mm, pres. University College Dundee (NHM 1955.5.3.27).
ETYMOLOGY. — From the Latin sagitta, arrow, for the arrow-shaped trough distally on the male fused abdominal segments.
DISTRIBUTION. — Known from the Persian Gulf, India and the Andaman Sea.
DESCRIPTION
Dorsal surface of carapace anteriorly punctuate, finely granulate, minutely granulate on branchial, gastric, cardiac and intestinal regions. Hepatic region slightly tumescent. Branchio-cardiac grooves shallow. Front produced, with shallow median cleavage.Anterior margin of efferent channel straight, separated from minutely beaded lateral margin by triangular incision, lateral margin nearly reaching as far forward as anterior margin. Upper, lower margins of subhepatic facet granulate, granules anteriorly on upper margin nearly effaced. Lateral margin of carapace posteriorly to subhepatic facet closely beaded, granules smaller posteriorly. Epimeral surface minutely granulate; epimeral margin minutely beaded. Sternum delicately granulate anteriorly. Anterior margin of abdominal sulcus prominently granulate. Margins of fused male abdominal segments 2-6 distally carinate. Margins of fused abdominal segments in female minutely granulate. Cheliped merus 0.85 as long as carapace in male; its surface minutely granulate, anteriorly granulate. Upper surface of propodus minutely granulate, lower margin bearing line of prominent granules, line of granules proximally on inner lower margin. Dactyl shorter than upper margin of propodus, sickle-shaped, its inner margin smooth. Pollex bearing two triangular denticles distally.Male first pleopod with short apical process.
REMARKS
Hiplyra sagitta n. sp. differs from its congeners in having anterior margin of efferent channel separated from lateral margin by triangular incision, and the margins of the fused male abdominal segments 2-6 distally carinate, forming an arrow-shaped groove. Alcock (1896: 242, 243) mentions in his description both the “edge of the epistome deeply cleft just below the eye” and the “sixth tergum demarcated by a deep groove”, but since he lacked comparative material he assumed his specimens were indistinct from De Haan’s Japanese H. platycheir n. comb. Tirmizi & Kazmi (1988: fig. 29b, b’) drawings accurately depict the triangular groove distally on the fused abdominal segments of the male.
description: Published as part of Galil, Bella S., 2009, An examination of the genus Philyra Leach, 1817 (Crustacea, Decapoda, Leucosiidae) with descriptions of seven new genera and six new species, pp. 279-320 in Zoosystema 31 (2) on pages 296-297, DOI: 10.5252/z2009n2a4, http://zenodo.org/record/5399261