![]() ![]() The base of the well-developed antennae is fused with the epistome (the area above the mouth). The rostrum (an extension of the carapace above the head) is shaped into two slender spines that jut out from between the eyes. It possesses no cryptic coloration and is unable to change color. Spiny and stubby tubercles (growths) cover the carapace, which ranges from dark orange to light tan in color. Females tend to have wider, although slightly smaller, abdomens than males. ![]() The carapace of Macrocheira kaempferi is sub-circular and pear-shaped (pyriform), narrower towards the head. The well-calcified carapace is only around 37 centimeters long, but adult specimens can be nearly 4 meters long from one tip of one cheliped (a claw-bearing leg) to the other when stretched apart.
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