Pence D B, Hoberg E P
Department of Pathology, Texas Tech University Health Sciences Center, Lubbock 79430.
J Med Entomol. 1991 Mar;28(2):205-9. doi: 10.1093/jmedent/28.2.205.
In the genus Thalassornectes, a new subgenus, Alcidectes, and a new species, T. (Alcidectes) aukletae, are described from deutonymphs in the subcutaneous adipose tissue of the crested auklet, Aethia cristatella (Pallas), and the parakeet auklet, Cyclorrhynchus psittacula (Pallas), from the eastern Pacific USSR. The new subgenus and species differ from one or both of the single species in each of the other two subgenera, Thalassornectes and Rallidectes, by (1) the normal size, position, and parallel arrangement of the genital papillae; (2) the larger size of seta sce; (3) the greater length and stronger development of setae sci, d1, l1, h, and sh; (4) the equal size of tarsi III and IV or their size subequal, with tarsus IV slightly longer than tarsus III; (5) both epimera I and sternum well developed and nearly equal in length; and (6) the free sclerotized posteriad extension from epimerite II on the ventral cuticular surface. This is the first hypoderatid reported from the host order Charadriiformes. The distribution of T. (Alcidectes) aukletae among auklets may be attributed to either cospeciation or may have an ecological basis; data are insufficient at present to sustain either hypothesis.
在海虱属中，从苏联东太平洋地区的凤头海雀（Aethia cristatella，帕拉斯命名）和长尾海雀（Cyclorrhynchus psittacula，帕拉斯命名）皮下脂肪组织中的若虫中，描述了一个新亚属——阿尔西德海虱属（Alcidectes）和一个新物种——海虱属（海虱亚属阿尔西德海虱）阿氏海虱（T. (Alcidectes) aukletae）。该新亚属和新物种与海虱属和秧鸡海虱属其他两个亚属中的单一物种中的一个或两个存在以下差异：（1）生殖乳头的正常大小、位置和平行排列；（2）sce刚毛较大；（3）sci、d1、l1、h和sh刚毛更长且发育更强；（4）跗节III和IV大小相等或近似相等，跗节IV略长于跗节III；（5）第一腹节和腹板均发育良好且长度几乎相等；（6）腹面表皮上第二腹节有自由硬化的向后延伸部分。这是首次报道从鸻形目宿主中发现的皮下螨类。海虱属（海虱亚属阿尔西德海虱）阿氏海虱在海雀中的分布可能归因于共物种形成，也可能有生态基础；目前数据不足以支持任何一种假设。
