Robertgurneyella, Gómez, 2020

Gómez, Samuel, 2020, A new species of Robertgurneya Apostolov & Marinov, 1988, with an illustrated record of R. rostrata (Gurney, 1927), an amended genus diagnosis and comments on R. soyeri (Apostolov, 1974) and R. spinulosa (Sars, 1911) (Harpacticoida Miraciidae), Zootaxa 4861 (4), pp. 451-485 : 482-483

Genus Robertgurneyella gen. nov.

Syn.: Amphiascus Sars 1905 part., Robertgurneya Apostolov & Marinov 1988 part.

urn:lsid:zoobank.org:pub:9A77EDDD-4A1A-42E7-87E8-E63D455027A9

Type species. Robertgurneyella spinulosa ( Sars 1911)) (= Amphiascus spinulosus Sars 1911 ; = Robertgurneya spinulosa ( Sars 1911)) , by monotypy.

Diagnosis. Miraciidae : Diosaccinae . Body semi-cylindrical compressed. Rostrum elongate, triangular, with pointed tip. Female second urosomite and genital somite distinct dorsally and laterally, completely fused ventrally; genital field with medial epicopulatory bulb. Female antennule eight-segmented in females; first and second segments longest, subequal in length. Male antennule haplocer, ten-segmented. Antenna with allobasis; exopod threesegmented; middle segment smallest; first and second segments with one seta, third segment with one lateral and two apical setae. Mandible with well-developed gnathobasis; basis well-developed, with three setae; endopod twosegmented, armature formula 2, 5; without exopod. Maxillule uniramous; coxal endite with two, basal endite with six, endopod with four setae; exopod lost. Maxilla with three syncoxal endites; endopod incorporated into allobasis, represented by two setae. Maxilliped subchelate; endopod one-segmented. Female P1–P4 with three-segmented rami; P1 ENP1 longer than exopod; P2–P3 ENP as long or longer than exopod, P4 ENP shorter than exopod.

Armature formula of P1–P4:

*Sexually dimorphic in males

Male P2 ENP sexually dimorphic, three-segmented; first and second segments with one seta, third segment shortest, with two outer spines, and one apical and one inner seta. Female P 5 EXP with six setae, endopodal lobe with five elements . Male P5 baseoendopods fused medially; EXP with five, endopodal lobe with three setae. Female P 6 with three setae. Caudal rami wider than long, with seven setae .