Family RECTARCTURIDAE Poore, 2001

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Diagnosis

"Body strongly vaulted; head and pereonite 1 fused; pereonite 4 of similar length to pereonite 3; all pleonites fused into pleotelson. Body variously tuberculate or spinose but never with a posterior dorsolateral pair of strong spines on pleotelson; pleotelson without dorsolateral ridges ending in mediodorsal posterior spine. Dorsal coxal plates 2–7 obsolete, bases of pereopods exposed. Mouthparts and pereopod 1 visible in lateral view. Eyes well developed. Antenna flagellum of 2 articles plus distal claw. Pereopod 1 a gnathopod, pereopods 2–4 elongated, differentiated from ambulatory pereopods 5–7. Pereopod 1 dactylus evenly curved along anterior margin, evenly tapering. Pereopods 2–4 with long setae along flexor margins of ischium–propodus (up to 9 pairs per article, well-spaced), with short dactylus, unguis longer and setiform. Pereopod 4 similar to pereopod 3. Pereopods of males without dense fur of fine setae. Oostegites 1–4 functional, supported by coxal lobes, oostegites 5 present as articulating discs or absent. Penes fused as a single penial plate, apically simple. Pleopod 1 peduncle more elongate than on other pleopods, with marginal setae on rami longer than peduncle; exopod of male thickened laterally, with groove on posterior face ending distolaterally on an apex separated from a free distomesial lamina by a notch. Pleopod 2 of male with appendix masculina as long as or longer than endopod, basally less than half width of endopod. Uropodal exopod tapering, with 2–3 stout distal setae." (Poore 2013: 18)

Diagnosis References

Poore, G.C.B. 2013. Rectarcturidae Poore, 2001 rediagnosed with descriptions of new Australian genera and species (Isopoda: Valvifera). Memoirs of Museum Victoria 70: 17–36 [18]

General References

Poore, G.C.B. 2001. Isopoda Valvifera: diagnoses and relationships of the families. Journal of Crustacean Biology 21: 205-230

Poore, G.C.B. 2013. Rectarcturidae Poore, 2001 rediagnosed with descriptions of new Australian genera and species (Isopoda: Valvifera). Memoirs of Museum Victoria 70: 17–36

History of changes