Volumes of Centrobolus albitarsus (Lawrence, 1967)
Mark Ian Cooper
Millipedes illustrate reversed sexual size dimorphism (SSD) where females are larger than males; and break Rensch’s rule as this dimorphism increases with body size. SSD was calculated in 18 species of the genus Centrobolus and illustrated as a regression. The present research was aimed to study the relative volume of Centrobolus albitarsus. The approximate relative position of C. albitarsus was shown from measurements taken at Lochiel (ca. 26° 9' 0" S, 30° 47' 0" E). The size of C. albitarsus was between 490.0885-1413.717mm3. The mean volume calculated for C. albitarsus log functions were 2.69-3.15. The difference between the SSD R-values for C. albitarsus and the trend for Centrobolus was not highly significant (Z=-2.46; P (one-tailed) = 0.0069; n=18).