Gunenotophorus Buchholz, 1869

Kim, Il-Hoi & Boxshall, Geoff A., 2020, Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata), Megataxa 4 (1), pp. 1-6 : 145

Genus Gunenotophorus Buchholz, 1869

Diagnosis. Female body comprising cephalosome, metasome (representing first tofourth pedigerous somites) forming large, globular brood pouch, and urosome. Fifth pedigerous somite largely or completely incorporated into brood pouch. Free urosome 5-segmented in female consistingof genitalsomiteand 4 abdominal somites.Anal somitewithorwithoutprocesses.Caudalramiwithreduced setation. Female antennule indistinctly segmented, with up to 7 segments partially expressed. Antenna consisting of coxa, basis, and 2-segmented endopod; exopodal seta absent. Mandible with well developed coxal gnathobase and biramous palp armed with 1 seta on basis, 5 setae on exopod, and 1 and 4 or 5 setae on first and second endopodal segments, respectively. Maxillulewith 8 or 9 setae on arthrite, 1 on coxal endite, 2 on epipodite; basis and endopod fused to form baseoendopod bearing 4 setae; exopod unsegmented with 4 setae distally. Maxilla indistinctly 3-segmented, syncoxa enditic formula 3, 2, 3; basis with claw plus 2 setae; endopod reduced with 3 to 5 small setae. Maxilliped unsegmented and armed with total of 7 setae. Leg 1 biramous with 3-segmented rami; leg 2 biramous with elongate 3-segmented exopod and short 2- or 3-segmented endopod according to species; legs 3 and 4 biramous with elongate 3-segmented exopods and reduced 2-segmented endopods; endopods of legs 2–4 typically ornamented with rings of minute setules; armatureformula of female typically:

Leg 5 represented by small lobe tipped with 1 small seta, or absent.

Type species. Guenentophorus globularis Buchholz, 1869 , by original monotypy.

Remarks. Illg (1958), Illg & Dudley (1965) and Gotto (1993) all attributed this genus to Buchholz (1869). The original use of the name by Costa (1840) was a nomen nudum, as pointed out by numerous authors. Illg & Dudley (1965) examined the convoluted nomenclatural history of this genus and its type species, and we follow them in an attempt to maintain stability of usage.