The usage of CL as the primary character accounted for six cases (14%) whereas gonopod
length, sixth abdominal segment width, and short carapace width were each used once as primary characters in estimating female brachyurans' size at morphometric maturity (Fig.
First male gonopod
an amber color, consisting of two unequal lobes laterally compressed with a medial groove; the shaft portions are membranous or weakly calcified (fig.
In his brief description, Chamberlin (1942) presented illustrations of the left gonopod
of the male and dorsal views of the 11th and 13th paranota, and stated that M.
The following somatic parts of each crab were measured: maximum carapace width (CW; was always measured behind the third cephalothoracic spine), abdomen width for females (AW; obtained from the 5 th to 6th abdominal somite) and gonopod
length for males (GL) to the nearest 0.
morphology is still central to spirostreptid millipede taxonomy (e.
The following morphological characteristics were measured: the carapace width (CW), the height and length of the major cheliped propodus (LPH and LPL), the width of the female abdomen at the base of the 4th somite (AW) and the length of the male gonopod
First male gonopod
strongly bent caudo-cephalic; lateral lobe semicircular with distal portion semi-acute, directed distally; accessory lobe spatulated with distal portion regularly rounded, subequal in length to lateral lobe, almost continuous with lateral lobe, except by V-shaped recess between them distally, on lateral view (Fig.
The morphometric measurement of carapace, abdomen, cheliped and male gonopod
were related to carapace width as an independent variable.
10): female gonopod
with claw-like sclerites, each hard and dark.
We observed preliminary differences in first form male gonopod
structure, branchiostegal tubercle presence, chelae shape, size of first form males, and pigmentation (Simon unpubl.
brachydactylus by gonopod
and annulus ventralis morphology.
paulensis, the present study aimed to: 1) determine the sizes in which males and females reach their morphological sexual maturity, 2) characterize the relative growth of the species based on allometric changes of carapace length, width, and height of the cheliped propodus, gonopod
length, and abdomen width in relation to the carapace width, and 3) verify the occurrence of heterochely in both sexes.