Miersarma, Schubart & Ng, 2020

Schubart, Christoph D. & Ng, Peter K. L., 2020, Revision of the intertidal and semiterrestrial crab genera Chiromantes Gistel, 1848, and Pseudosesarma Serène & Soh, 1970 (Crustacea: Brachyura: Sesarmidae), using morphology and molecular phylogenetics, with the establishment of nine new genera and two new species, Raffles Bulletin of Zoology 68, pp. 891-994 : 960-961

Miersarma , new genus

Type species. Sesarma granosimana Miers, 1880 , by present designation. Gender neuter.

Diagnosis. Carapace squarish or just wider than long; frontal margin weakly bilobed, gently deflexed, wider than posterior carapace margin; lateral margins of carapace straight, unarmed, posterolateral part subparallel; regions of carapace demarcated; postfrontal and epigastric crests separated by distinct but relatively shallow grooves, margin relatively straight, regions separated; basal articles of antenna and antennules clearly separated by septum formed by extension of front; dorsal margin of palm without any longitudinal pectinated ridge; in adult males, inner surface with submedian transverse swelling, highest point with granules, outer surface of palm and pollex convex, outer surface of palm with squamose granules and striae, ventral margin with sharp granules, appears serrate, dorsal margin of chelipedal dactylus with small granules; inner distal margin of merus of cheliped not lamelliform; inner surfaces of first to third ambulatory coxae with scattered short setae between them, not arranged into dense tufts; male thoracic sternites 2–4 relatively narrow in adults, shallow suture between sternites 3 and 4 barely visible; male sternopleonal cavity reaching three-quarters length of sternite 4 to just before anterior margin of sternite 2; male thoracic sternite 5 smooth, without depression on anterior part; male sternopleonal cavity without trace of press-button on sternite 5, posterior edge of sternite 4 not expanded, no trace of obvious pleonal locking mechanism; G1 slender, straight, relatively long chitinous distal part bent at almost right angles. Vulva on anterior part of sternite 6, anterior edge presses against sternite 5; low and rim-like anterior and posterior sternal vulvar covers; opening low, rounded, not projecting.

Etymology. The genus name is derived from Edward J. Miers (1851–1930), who described the type species, in combination with the genus name Sesarma . The gender is neuter.

Included species. Sesarma granosimana Miers, 1880 .

Remarks. Differences between this genus and Pseudosesarma s. str. have been discussed under that genus.