Thus, for the sichel in the Mur, higher mean values were observed for the total body length (1), eye diameter (6), predorsal distance (8), preanal
distance (9), length of base D (13), length P (15), height of annal fin (18), distance preorbital (5) and postorbital distance (7); lower mean values were observed for the head length (3), head height (4), postorbital distance (7), maximum body height (10), caudal peduncle length (11), minimum body height (12), length of base A (14), length V (16), height of the dorsal fin (17), distance P-V(19), distance V-A (20) and head height (4).
Three rows of genital papillae: the external rows with thirteen papillae situated in a single line; ventral row with seven preanal
papillae arranged as followed: two single papillae, three pairs of papillae, and two single papillae, and five pairs postanal papillae, the adanal papillae absents.
 In regarding to malignant degradation of porokeratosis, it seldom happened, it can be presented with any type of porokeratosis on skin surfaces, but in the mucosal surfaces, there was a report of preanal
squamous cell carcinoma presented in anal mucosal surface with PM subtype.
There are uncini, rather than acicular spines, in anterior segments and there is a single asetigerous preanal
segment, all characteristic of the genus Axiothella.
Ventral profile concave from pectoral-fin to caudal-fin base; preanal
area of ventral profile presenting two convexs: one from the tip of snout to the start of pelvic-fin, and the other from end of pelvic-fin to the anal-fin origin.
Notes: The body is composed of 20 segments in both sexes; 31 pairs of legs in female and 30 in male; general coloration dorsally brown; collum, head, preanal
segment, anal valves, sternal region, and legs yellowish-brown; antennae brown.
These measurements, including body length (BL), preanal
length, head length (HL), snout length, length of the pectoral-fin blade, eye diameter, and body depth, are defined in Moser (1996a).
neomexicana from the Conchas Lake area, San Miguel County, New Mexico, reported two preanal
scales immediately anterior to the vent in 34 (35.4%) and one in 62 (64.6%).
Protolarvae had 22-23 post anal myomeres and 23-24 preanal
Sex determined on the basis of preanal
and femoral pores which were present in males and absent in females.