Ailsastra paulayi O'Loughlin & Rowe, 2005, sp. nov.

Ailsastra paulayi sp. nov. Figures 1, 2f, 3f, 5g –i Material examined. Holotype (in alcohol, part dissected). Indonesia, Sulawesi I., Pulau Talatakoh, 0°28'2''S, 122°8'22''E, 1–10 m, G. Paulay, 19 Sep 1999, UF 1815. Paratype. Sulawesi I., 1– 2°S, 121° E, 1–16 m, G. Paulay, 26 Sep 1999, UF 910. Diagnosis. Ailsastra with, at R = 16 mm, discrete, elongate, narrow, slightly tapered rays, R/r about 2.7; 8 longitudinal series of papulae across mid-ray; disc regularly bordered; long, thin, spinelets, up to about 0.25 mm long; proximal and distal interradial spinelets subequal; superomarginal and inferomarginal spinelets subequal; up to 7 actinal interradial spines per plate. Description (holotype). Morphological characters of Ailsastra; integument evident; 5 rays, R up to 16 mm; rays discrete, narrow at base, elongate, low, slightly tapered, rounded distally, R/r about 2.7; single madreporite, not fissiparous; abactinal gonopores. Carinal series of plates broadly visible, plates not noticeably below adcarinal plates, doubly papulate, other ray plates not indented for single papula, 3 longitudinal series of papulae on each upper side of rays, 8 longitudinal series across mid-ray; disc regular, defined by 5 radial, 5 interradial plates; spinelets glassy, thin, subsacciform to conical, each with few small points distally, up to about 20 spinelets in single or double webbed series across proximal edge of plate, or in splayed tufts on plates, spinelets up to about 0.25 mm long on proximal ray, up to about 10 in subpaxilliform splayed tuft on distal interradial plates; proximal and distal interradial spinelets subequal in length; superomarginal and inferomarginal spinelets subequal in length, up to about 6 per superomarginal plate, about 14 per inferomarginal plate. Actinal spines per plate: oral 5–6; suboral 0–1; furrow (proximal) 5; subambulacral 4; adradial actinal 3; interradial 3–7; interradial spines glassy, thin, subsacciform to conical, splay-pointed, in webbed tufts. Colour (live). Mottled red and orange (holotype photo by G. Paulay: GP 670:24). Distribution. Indonesia, Sulawesi; 1– 16 m. Etymology. Named in recognition of Dr Gustav Paulay of the University of Florida, who collected this material and who has facilitated extensive collecting of asterinid material throughout the Indo-Pacific region. Remarks. The paratype is small (R = 7 mm), and the rays are not as narrow as those of the holotype. Molecular phylogenetic data from Jon Waters (pers. comm.) places the two specimens of A. paulayi in a highly divergent but strongly monophyletic clade within a molecular phylogeny of Asterinidae (Jon Waters, pers. comm.; paper in preparation).保罗艾利斯海星（Ailsastra paulayi）新种 图版1、2f、3f、5g~i 检视标本。正模标本（乙醇保存，部分解剖）：印度尼西亚苏拉威西岛塔拉塔科岛，0°28'2''S，122°8'22''E，水深1~10米，G. Paulay采集，1999年9月19日，标本号UF 1815。 副模标本：苏拉威西岛，1°~2°S，121°E，水深1~16米，G. Paulay采集，1999年9月26日，标本号UF 910。 鉴别特征。隶属于艾利斯海星属（Ailsastra）：当盘半径（R）为16 mm时，具离散、细长、狭窄且略呈锥形的腕，R/r约为2.7；腕中部具8纵列皮鳃（papulae）；盘周缘规则；具细长薄型小棘（spinelets），最长可达约0.25 mm；间辐区近端与远端的小棘长度近等；上缘板与下缘板的小棘长度近等；每个板具至多7个口面间辐小棘。 正模标本描述。形态特征符合艾利斯海星属：体壁清晰可见；具5个腕，R最大可达16 mm；腕离散，基部狭窄，细长低矮，略呈锥形，末端圆钝，R/r约为2.7；具单个筛板（madreporite），不进行分裂生殖；反口面（abactinal）具生殖孔。背板的龙骨列清晰可见，背板未明显低于腕板，具双列皮鳃，其余腕板无单个皮鳃凹陷；腕的每一侧具3纵列皮鳃，腕中部具8纵列皮鳃；盘规则，由5个辐板与5个间辐板构成；小棘呈玻璃状，纤细，近囊状至锥状，末端具少数小尖突，在板的近缘以单列或双列具膜包裹的小棘排列，或在板上呈散开的簇状；近腕端的小棘最长可达约0.25 mm，间辐区远端板上的小棘呈亚丛状散开，约10个；间辐区近端与远端小棘长度近等；上缘板与下缘板的小棘长度近等，每个上缘板具至多6个小棘，每个下缘板具约14个小棘。口面小棘：口板5~6个；亚口板0~1个；步带沟（ambulacral furrow，近端）5个；步带侧板4个；辐向口板3个；间辐区3~7个；间辐区小棘呈玻璃状，纤细，近囊状至锥状，尖部散开，呈膜包裹的簇状。 活体颜色。斑驳的红色与橙色（正模照片由G. Paulay拍摄：GP 670:24）。 分布。印度尼西亚苏拉威西海域；水深1~16 m。 词源。本种以佛罗里达大学的古斯塔夫·保罗伊（Gustav Paulay）博士命名，以表彰其采集本批标本，并推动了整个印度-太平洋区域海燕科（Asterinidae）标本的大量采集工作。 讨论。副模标本体型较小（R=7 mm），其腕部不如正模狭窄。乔恩·沃特斯（Jon Waters）提供的分子系统发育数据（私人通信）显示，保罗艾利斯海星的两个标本在海燕科的分子系统发育树中处于一个高度分化但具有强单系性的分支中（Jon Waters，私人通信；论文待发表）。