Description

The Tomato Vampire Crab (Geosesarma sp.) is a small, very colorful, semi-terrestrial species that is native to Java, Indonesia. It inhabits forest areas near streams, rivers, and ponds. It spends most of its time on land, but also often submerges in freshwater, including when it molts. It is communal with its own species, and males typically are larger than females, and also have much larger claws.

Appearance:

• The entire body—from carapace to legs—is a vivid, bright red (resembling a ripe tomato), with slightly darker hues around the face shield.

• Adult carapace width is about 2–3 cm, total leg span around 5 cm (≈2 inches).

• Sexual dimorphism: males tend to have larger, more tapered abdominal flaps (V-shaped) and larger claws; females exhibit broader U-shaped belly flaps.