Hamondiidae, Huys, 1990

Wells, J. B. J., 2007, An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea), Zootaxa 1568 (1), pp. 1-872 : 404

Family Hamondiidae

KG 0 – characters

Huys (1990a) discusses the relationship of all the species and records mentioned in this key and should be consulted before a final determination is made.

1. Body shape, in dorsal view

ovoid ­ strongly dorsoventrally compressed; a broad oval in outline

dv ­ at most only moderately dorsoventrally compressed; never ovoid in outline

2. Cephalic shield and metasome A ­ posterior margin of cephalic shield with median mucroniform process; epimeral plates of metasomites extremely large; posterior margin of 2nd and 3rd metasomites produced laterally into posteriorly directed, paired mucroniform processes (see Geddes 1969, Figs 3A–B ) B ­ none of the above (see Huys 1990a, Figs 24A, 25B )

3. Female abdomen somites 1–3*

present ­ prominent posteriorly directed, pointed epimera present, densely clothed with spinules

absent ­ prominent epimera absent

* Prominent epimera are always absent in the male.

4. P1, relative lengths of exopod and endopod

long ­ exopod longer than endopod

equal ­ exopod and endopod approximately the same length

short ­ exopod shorter than endopod

5. Female antennule, relative lengths of segments 3 and 4

long ­ segment 3 longer than segment 4

short ­ segments 3 and 4 approximately the same length

6. Male P5, relative lengths of endopod and exopod

long ­ endopod extends to end of exopod

short ­ endopod much shorter than exopod

minute ­ endopod rudimentary

Figures

FIGURES 3–11: 3, diagram of a generalised left Caudal Ramus in dorsal view with setae numbered in accordance with the conventions of Huys & Boxshall (1991). 4–11, semi­diagrammatic representations of appendages — 4, female Antennule; 5, haplocerate male Antennule; 6, chirocerate male Antennule; 7, Antenna with Basis; 8, Antenna with Allobasis; 9, Mandible; 10, Maxillule; 11, Maxilla.

FIGURES 22–33: 22–24, Porcellidiidae — 22–23, female and male in dorsal view; 24, P1. 25–28, Peltidiidae — 25– 26, females in dorsal view (note that the chitin struts may be less well developed than shown in Fig 25 or be entirely absent); 27–28, forms of P1. 29–30, Hamondia (Hamondiidae), — 29, female in dorsal view; 30, P1. 31–33, Paramenophia (Thalestridae), — 31–32, female and male in dorsal view; 33, P1.