PSEUDOCYCLOPIDAE GIESBRECHT, 1893

Bradford-Grieve, Janet M., Boxshall, Geoffrey A. & Blanco-Bercial, Leocadio, 2014, Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae, Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 171 (3), pp. 507-533 : 526-527

FAMILY PSEUDOCYCLOPIDAE GIESBRECHT, 1893

Ridgewayiidae M.S. Wilson, 1958

Boholinidae Fosshagen & Iliffe, 1989

Diagnosis: Female caudal rami of equal lengths (except Pinkertonius gen. nov., longer on right); male caudal rami usually symmetrical (except Stargatia ); seta II spiniform. Female antennule ancestral segment IV without aesthetasc. Tendency for aesthetascs to be absent from additional segments. Mandible endopod well-developed, two-segmented, ranging from greater than half length of exopod to extending well beyond exopod (except Exumella ), segment 1 usually with four setae (exceptions Robpalmeria , Normancavia , Exumella , and Stargatia ), segment 2 usually with between eight and 11 setae, except for Normancavia , Exumella , and Exumellina , which have six, six, and seven setae, respectively. Maxillule coxal epipodite always with nine setae. Maxilla basis usually less than twice estimat- ed length of coxa (except Exumella ), basal endite usually elongate (except in Placocalanus ), and endopod setae normal (exception in Boholina , which has spine-like setae). Maxilliped endopod segments 2–6 usually longer than length of coxa (not including praecoxa) (exception Placocalanus and Pseudocyclops ) and endopod setae normal. Swimming legs 1–5 with both rami threesegmented. Leg 1 basis posterior surface with tendency to have posterior surface process; exopod segment 2 with tendency to have outer distal corner produced into spinous lobe inner to articulated spine; exopod segment 3 with variable number of inner setae. Female leg 5 has tendency towards specialization of joint between exopod segments 2 and 3 composed of lengthening of outer distal part of segment 2, forming an oblique distal margin, and narrowing of proximal articulating region of segment 3; endopod reduced to two segments in Boholina and reduced or absent in Ridgewayia . Male left leg 5 with inner process present on exopod segment 2; tendency towards reduction in arthrodial membrane formation in endopods and increasing complexity in form of exopods ( Table 6).

Type genus: Pseudocyclops Brady, 1872 .

Remarks: The genera included in this family are: Badijella , Boholina , Brattstromia , Exumella , Exumellina , Hondurella , Normancavia , Pinkertonius gen. nov.,

Placocalanus , Pseudocyclops , Ridgewayia , Robpalmeria , Stargatia , and Stygoridgewayia .