Calalimnadia Rabet & Rogers, 2012

Rogers, D. Christopher, 2020, Spinicaudata Catalogus (Crustacea: Branchiopoda)., Zoological Studies 59 (45), pp. 1-44 : 5

Calalimnadia Rabet & Rogers , in Rogers et al.,

2012

Diagnosis: (modified from Rogers et al. 2012)

Hermaphrodites only. Rostrum rounded. Angle between rostrum and frons 100° to 120°. Naupliar eye shape variable from oval to triangular. Occipital notch occipital condyle absents. Pedunculate frontal organ length approximately 1.5x distance of organ from ocular tubercle. Carapace dorsal margin smooth, lacking carinae, hinge line arcuate, rarely sinuate. Carapace surface between growth lines smooth. Umbone absent. Carapace without pigmentation. Muscle scar angle 35° to 40° from normal. Eggs attaching to prolonged exopods of thoracopods IX and X. Thoracic segments smooth or with dorsoposterior ridge margined with spines or setae. Telson with posteriorly directed spiniform projection present on ventroposterior angle, anteriad of cercopod base. Telson posterior margin posteriolateral spine rows dorsally confluent, confluence not projecting. Each row with average of 23 spines. Caudal filament originating between spine rows at third or fifth spines from confluence. Caudal filament never borne on mound. Cercopods straight, elongate, ~3x length of telson ventral margin, each medially with longitudinal row of setae on proximal 80–90%, with apex beyond the cirrus bent dorsally. Setae long and plumose. Setal row terminates with single spine. Cercopod with subapical, dorsal cirrus, extending from 4 to 15% of cercopod length. Egg averages 170 μm in diameter, spherical to subspherical, with broad, round ridges, with narrow slits between ridges.

Attributed Species