Lernanthropus microlamini Hewitt 1968

• Main Authors: Boxshall, Geoff A., Bernot, James P., Barton, Diane P., Diggles, Ben K., Q-Y, Russell, Atkinson-Coyle, Toby, Hutson, Kate S.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Maxillopoda; Siphonostomatoida; Lernanthropidae; Lernanthropus; Lernanthropus microlamini; Antarc*; Antarctica
• Online Access: https://doi.org/10.5281/zenodo.3671101; http://treatment.plazi.org/id/554BDB527354FFF75FC9FAA92D2EFED6

Lernanthropus microlamini Hewitt, 1968 (Figs. 25–26) Material examined: 2♀♀ 3♂♂ from gills of Hyperoglyphe antarctica (Carmichael, 1819), Adelaide, South Australia; 10 May 2007; collected by K.S. Hutson; 1♀ and 1♂ NHMUK Reg. No. 2007.948–949 and 1♀ and 2♂♂ SAMA Reg. No. C6900. 1♂ from gills H. antarctica, Coffs Harbour, New South Wales; 27 October 1981; collected by K. Rohde; NHMUK Reg. No. 1984.90. Differential diagnosis: Cephalothorax longer than wide with lateral margins parallel anteriorly; frontal margin weakly concave. Trunk about 2.5 times longer than cephalothorax (Fig. 25 A–C); anterior part (second and third pedigerous somites) becoming wider posteriorly, posterior part (fourth pedigerous somite) covered by subrectangular dorsal trunk plate with rounded corners and with weakly convex lateral and posterior margins. Urosome comprising fifth pedigerous somite, genital complex and abdomen, all fused. Paired caudal rami small; each ramus about twice as long as width at base; completely concealed beneath dorsal trunk plate. Parabasal flagellum cylindrical. Leg 3 forming large, ventrally-directed, fleshy lamella, extending posterolaterally from side of body by almost one third of length: third legs separate but overlapping slightly in midline. Leg 4 bilobate (Fig. 25 A–C); inner and outer lobes foliaceous, tapering distally, outer lobe longer than inner and protruding posterolaterally from beneath lateral margin of dorsal trunk plate. Leg 5 represented by laterally-directed cylindrical lobe about twice as long as wide, armed with basal seta on dorsal surface. Body length of ♀ 8.45 mm. Description of male. Body smaller than female, body length 2.74 mm. Cephalothorax large, comprising about 40% of total body length, broadest at middle, with angular lateral margins; frontal area of cephalothorax carrying antennules and antennae, defined by slight indentation (Fig. 26A). Trunk slender comprising second to fourth pedigerous somites fused to urosome. Urosome comprising fifth pedigerous somite, genital somite and ...