NEW MARINE TARDIGRADES FROM HAWAIIAN BEACH SAND AND PHYLOGENY OF THE FAMILY HALECHINISCIDAE
NEW MARINE TARDIGRADES FROM HAWAIIAN BEACH SAND AND PHYLOGENY OF THE FAMILY HALECHINISCIDAE
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DOI：
10.2307/3226877
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发表时间：
1995-01-01
影响因子：
1.2
通讯作者：
POLLOCK, LW
中科院分区：
文献类型：
--
作者：
POLLOCK, LW
描述了夏威夷群岛考艾岛阿纳霍拉湾的两个海洋间质节肢动物新种，它们都属于一个新属。Dipodarctus n.Gen.其特征是：长的初级锁骨位于头外侧环的腹侧；小腿IV为卵形，末端棘短；与足IV相比，脚I-III的脚趾长度不同。足TV的脚趾为塔纳克图斯型，具有内侧长的脚趾，而脚I-III至少有3个相等的短脚趾。波罗兰Dipodarctus borrori n.sp.有粗短的两节头环；一个不寻常的可伸出的口锥；脚I-III的最外面的脚趾是这些脚剩余脚趾长度的两倍。斑潜蝇Dipodarctus anaholiensis n.有长的逐渐变细的头环；所有的脚趾I-III相等；角质层上有粗糙的点状斑点。Dipodarctinae是Halechinissidae中的一个新亚科，包括这些动物。该亚科的统一特征包括腹侧集初级棍棒；第四腿上的短感觉乳头；腿I-III的脚不同于第四腿的脚。该亚科成员之间的性格-状态极性被用来构建分支图，在该分支图中，两个基本类群主要根据脚趾长度模式、爪子特征和头部附属物的形状来区分。
Two new species of marine interstitial arthrotardigrades, both members of a new genus, are described from Anahola Bay, Kauai, Hawaiian Islands. Dipodarctus n. gen. is characterized by long primary clavae situated ventral to short lateral cephalic cirri; small ovoid leg IV papillae with short terminal spines; and unequal toe-length patterns on feet I-III as compared to foot IV. Toes on foot TV are of Tanarctus-type with long medial toes, while feet I-III possess at least 3 equal, short toes. Dipodarctus borrori n. sp. has stubby, 2-piece cephalic cirri; an unusual protrusible mouth cone; and outermost toe on feet I-III twice the length of remaining toes on these feet. Dipodarctus anaholiensis n. sp. has long, tapering cephalic cirri; all toes on feet I-III equal; and coarsely punctate cuticle. Dipodarctinae is erected as a new subfamily within the Halechiniscidae to include these animals. Unifying features of the subfamily include ventrally set primary clavae; short sensory papilla on leg IV; feet of legs I-III differing from foot of leg IV. Character-state polarities among the members of the subfamilies of Halechiniscidae are used to construct a cladogram in which two basic groups are distinguished primarily on the basis of toe-length patterns, claw features, and the shape of cephalic appendages.