Megasoma punctulatus is a very neat looking beetle with a split horn
on the head and forward facing projections on the pronotum. This is a small
Wild caught males range from 24-32mm although a record specimen was found
at a whopping 42mm! For those who collect the Genus Megasoma it can be
an incredible challenge getting even one of the U.S. Megasoma species to
rear. M. punctulatus is the second rarest US species and is rarely caught
in its range of Southern AZ. The rarest, Megasoma sleeperi, is from the
Southern border of California and nowhere else. Megasoma vogti is from
Southern Texas and Northern Mexico and is the most common of the U.S. species.
Even M. vogti is very difficult to obtain.
Megasoma punctulatus adults eat sugary liquids like most Dynastids
and the larvae thrive on compost, rotten wood, and dead leaves.
and 2nd instar larvae.
Adults live two to four months. Mature beetles mate a few weeks after emergence.
Females seldom produce more than 20 eggs. Wild-caught females seldom, if
ever, lay more than 10 eggs possibly because they may have already deposited
a number. Hatching takes 1 month, L1 to L2 takes 6-8 weeks, and L2-L3 takes
12-16 weeks. The complete life cycle takes one or two years, usually two.
This species has almost no die-off at any stage if kept reasonably well.
However, it is nearly impossible to acquire livestock.
to the Insects