Plexippus erythrocephalus C. L. Koch 1846

Tab. CCCCXL1X. Fig. 1164.

Prosoma, pedipalps and legs ocher yellow, the head plate red-brown, the (articular prominence) over the side eyes black; abdomen brownish yellow with black sides; chelicerae maroon.

Length nearly 11 mm.

Klug Königl. collection in Berlin.

I have only one, and indeed only one male specimen in front of me. The cuticle of the prosoma and opisthosoma, the pedipalps and legs is naked, no trace of the setae characteristic of the genus [Plexippus] is to be seen, only scattered light setae under the anterior eye row. The shape is nothing special, close to that of Plexippus lacertosus, the legs are of the same shape, the pedipalps however situated like those of Plexippus mutillarius, but lightly haired. The eyes have the usual size and position. The genitals are fully developed. Transverse lines of the large chelicerae are very fine and therefore these are much more shiny than usual.

The prosoma is ocher-yellow, the eye region and face red-brown, the bumps above the (apex eyes) and the anterior border are black, the setae of the latter yellowish, and there areas around the eyes are fire-red. The first two anterior [distal] segments of the pedipalps are chrome yellow, the third [more distal] reddish, and the distal segment red-brown above; the genitals [tegulum and associated parts] are black. The abdomen is darker ocher-yellow, brown-black on the sides along the length. All legs have the ocher-yellow color of the thorax [prosoma behind eye region], without characters, only the clawed feet are black. The chelicerae are red-brown, darker on the inner [medial] sides, shiny, somewhat greenish metallic; the fang is red.

Locality: Java.

3. Latin (Neolatin) description of ♂ by Simon (1903)