Ascidicolidae Thorell 1859

• Main Authors: Kim, Il-Hoi, Boxshall, Geoff A.
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Maxillopoda; Cyclopoida; Ascidicolidae; Bergen; Seta; Arktis*; Copepods
• Online Access: https://dx.doi.org/10.5281/zenodo.4822417; https://zenodo.org/record/4822417

Family Ascidicolidae Thorell, 1859 Diagnosis (female). Body cylindrical. Prosome 5-segmented, consisting of cephalosome and 4-segmented metasome. Urosome 5- or 6-segmented, with 3- or 4-segmented abdomen. Fifth pedigerous somite obscurely defined. Caudal rami usually small, armed with 5 or 6 setae. Rostrum not developed. Antennule small, 5- to 8-segmented; aesthetascs small. Antenna consisting of coxobasis and 2-segmented endopod, or 4-segmented including obscurely defined coxa, basis bearing 1 spine distally; distinct flexure present between basis and first endopodal segment; second endopodal segment bearing terminal claw. Labrum broad, bearing 1 or 2 dentiform processes at posterolateral corners. Mandible consisting of coxa and palp; coxa with well-developed gnathobase bearing irregular denticles on medial margin; palp uniramous, or biramous with well-defined basis, exopod and endopod. Maxillule consisting of precoxa and palp; precoxa bearing 7 to 9 setal elements on arthrite; palp uniramous or biramous; coxal endite present or absent. Maxilla 2- to 4-segmented; syncoxa (first segment) with 2 endites each bearing 1 seta, or 1 endite bearing 2 or 3 setae, or endites absent; basis with strong claw in addition to setae, or with setae only; endopod reduced, 1- or 2-segmented; in Ascẚdẚcçla and Styelẚcçla basis and endopod completely fused to form allobasis. Maxilliped unsegmented and unarmed, or armed with 1 to 7 setae. Legs 1-4 broad, biramous; coxa usually lacking inner seta; basis of leg 1 with or without inner distal spine; exopods 2-segmented; endopods mostly 2-segmented. First endopodal segment of legs 1 and 2 always lacking inner seta. Exopods and endopods of legs 1-4 usually armed with spines only. Leg 5 large, lamellate, bearing rudimentary setae, or consisting of lamellate protopod bearing outer distal seta and setiferous exopod. Leg 6 represented by 3 dentiform processes on genital operculum. Remarks. Thorell (1859) first established the Ascidicolinae as a subfamily of the family Notodelphyidae in order to accommodate his new genus Ascẚdẚcçla Thorell, 1859. As highlighted by Illg & Dudley (1980), it was treated both as a subfamily and as a family level taxon throughout the late nineteenth and the twentieth centuries. Its composition has varied over this period but it gradually expanded until it contained a total of seven main component taxa, each of which was recognized as a subfamily of the family Ascidicolidae by Illg & Dudley (1980) in their comprehensive revision. The seven subfamilies were: the Ascidicolinae, Buprorinae Thorell, 1859, Botryllophylinae Sars, 1921, Enterocolinae Della Valle, 1883, Enterognathinae Illg & Dudley, 1980, Enteropsinae Aurivillius, 1885, and Haplostominae Chatton & Harant, 1924. The Enterognathidae was treated as a separate family by Boxshall & Halsey (2004) and Ohtsuka et al. (2010), and comprises associates of echinoderm and hemichordate hosts. It is not considered further here. Subsequent revision of the remaining six subfamilies resulted in the recognition of four valid family level taxa (see Boxshall & Halsey, 2004). Illg & Dudley (1980) retained only two genera, Ascẚdẚcçla and Styelẚcçla Lützen, 1968, in their subfamily Ascidicolinae which was subsequently returned to family status, as the Ascidicolidae by Boxshall & Halsey (2004). Two new genera eamẚstyelẚcçla gen. nov. and Bathycçpçla gen. nov. are added to the family in the present work. All species currently placed in this family were found living in association with solitary ascidians. In the genera Styelẚcçla , eamẚstyelẚcçla gen. nov. and Bathycçpçla gen. nov. , leg 5 consists of a lamellate protopod and a small, setiferous distal segment. This distal segment was recognized as the endopod by Lützen (1968) and by Illg & Dudley (1980), but Boxshall & Halsey (2004) re-interpreted it as representing the exopod. The four genera of the Ascidicolidae are distinguishable using the following key. : Published as part of Kim, Il-Hoi & Boxshall, Geoff A., 2021, Copepods (Cyclopoida) associated with ascidian hosts: Ascidicolidae, Buproridae, Botryllophilidae, and Enteropsidae, with descriptions of 84 new species, pp. 1-286 in Zootaxa 1 on page 6, DOI: 10.11646/zootaxa.4978.1.1, http://zenodo.org/record/4820443 : {"references": ["Thorell, T. (1859) Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Asc \u1e9ad\u1e9aa L. hcngl \u1e9aga Svenska vetenskapsakadem \u1e9aens handl \u1e9angar, 3 (8), 1 - 84.", "Illg, P. L. & Dudley, P. L. (1980) The family Ascidicolidae and its subfamilies (Copepoda, Cyclopoida), with descriptions of new species. Memc \u1e9ares du Museum kat \u1e9acnal d'e \u1e9astc\u1e9are katurelleI mar \u1e9as, Serie A, Zoologie, 117, 1 - 192.", "Sars, G. O. (1921) An acccunt cf the Crustacea cf kcrway w \u1e9ath shcrt descr \u1e9apt\u1e9acns and f \u1e9agures cf all the spec \u1e9aesK sclK 8 K CcpepcdaK Mcnstr \u1e9allc\u1e9ada and kctcdelphyc \u1e9ada. Bergen Museum, Bergen, 91 pp., 37 pls.", "Aurivillius, C. W. S. (1885) Krustaceer hos arktiska tunikater. sega-bxped \u1e9at\u1e9acnens setenskakpl \u1e9aga fakattagelserI Stcckhclm, 4, 223 - 254, pls. 7 - 9.", "Boxshall, G. A. & Halsey, S. H. (2004) An fntrcduct \u1e9acn tc Ccpepcd a \u1e9avers\u1e9aty. The Ray Society, London, 966 pp.", "Ohtsuka, S., Kitazawa, K. & Boxshall, G. A. (2010) A new genus of the endoparasitic copepods (Cyclopoida: Enterognathidae) forming a gall in the calyx of deep-sea crinoids. Zcclcg \u1e9acal Sc \u1e9aence, 27, 689 - 696.", "Lutzen, J. (1968) Styel \u1e9accla bahus \u1e9aa n. g., sp. nov. (family Ascidicolidae), a commensal copepod from Styela atlant \u1e9aca and S. gela \u1e9ancsa from the Skagerrak. Crustaceana, Supplement 1 (Studies on Copepoda), pp. 96 - 102. [https: // www. jstor. org / stable / 25027368]"]}