ARACHNIDA > OPILIONES > Nemastomidae > Nemastominae

Mitostoma chrysomelas is a tiny, delicate species with a body length of barely 2mm, relatively long, thin black legs, and very long pedipalps that are typically held forward in an upward folded position.

The ground colour of the body is usually described as yellowish brown but, in reality, is rather variable as some specimens are quite pale, while others will look much darker. The dorsal surface is somewhat flat-topped and is adorned with rows of bifid or trifid tubercles, which form a pattern that is usually broken into five areas. The lateral margin is also marked by a continuous line of tubercles. Females can have paired golden 'spots' at the rear.

The rather small chelicerae are dark brownish-black and, in the males, there's a noticeable protruding projection and spur at the front. The pedipalps are covered in sticky capitate setae that aid capture of small invertebrates such as springtails.

Unfortunately, the only shot I have of the species is of an immature individual that despite exhibiting the characteristic long legs and pedipalps, has little colour and lacks the tubercles, which will develop later. It's a nice record photo to have, but I now need to find an adult, which is easier said than done given their small size.

The species is common and widespread, but with scattered distribution, so it may not necessarily occur in every region. They are ground-dwelling species that typically live in humid, often damp habitats, where they may be found under logs or stones, amongst leaf-litter, or on moss or low vegetation.

Both the adults and juveniles can be found at pretty much any time of the year as egg-laying is not restricted to any particular season.