Cryptoserphus dilatus

Length ~5mm. Longer spur of hind tibia ending between the middle and the apical two-fifths of the first segment of the hind tarsus. Upper front part of the smooth area on the metapleuron not connected by a ridge to the upper edge of the propodeum, or sometimes connected by a weak or incomplete ridge. Mesopleural suture not marked with small depressions or pits. Clypeus about 0.60 times as wide as the face. Median longitudinal groove at the base of the syntergite short, reaching 0.2 to 0.3 of the distance to the first pair of thyridia. Hair band on the front edge of the mesopleurum nearly always with a wide interruption. Male: punctures on the tergite following the syntergite moderately small, separated by about half their diameter. 

Unless identified by a recognised expert, photos are required showing the key features. If keyed describe how it was identified and the key used.

Parasitoid of fungus gnat larvae.

Unknown. 

Unknown.