Bocus angusticollis
Broad-Jawed Ant-Mimic Jumper
Bocus spiders are closely related to Myrmarachne and other ant-mimic jumpers. They are characterised by a "neck" representing the narrowing of the carapace between the cephalic and thoracic regions on the cephalothorax.
In this species, there is a small conical peg-like structure on the pedicel. The chelicerae of the male are flattened dorsally and grossly broadened. The cephalic region is much wider than related species. The sides of the "head" are rounded in the males and nearly parallel in the females. The "neck" of this species is much narrower than those of its relatives, hence the name "angusticollis" which means "narrow neck" in Latin. The female has a pair of white wedge-shaped patches marking the "neck" (not distinct in the males).
| Etymology | The species name means “with narrow neck” in Latin. |
| Length | ♀6 mm; ♂ 6 mm (8 mm including chelicerae). |
| Habitat | Foliage at the under-storey and canopy in secondary rainforests and mangrove edges. |
| Type Locality | Sabah, Malaysia. |
| Distribution | Brunei, Singapore. |