Derocephalus angusticollis

rdf:langString Derocephalus angusticollis

rdf:langString Enderlein, 1922

rdf:langString Derocephalus

rdf:langString angusticollis

rdf:langString *Telostylinus bivittatus (Cresson, 1926)

rdf:langString Derocephalus angusticollis is a fly in the family Neriidae. They are typically found on the east coast of Australia near rotting vegetation. Aggregating on the rotting bark of trees such as Acacia longigolia and other trees in New South Wales and southern Queensland. D. angusticollis flies found in the wild have accelerated speeds of development and age of mortality when compared to those in captivity.DerocephalusOne characteristic of the neriid fly is that it demonstrates sexual dimorphism. Males have a larger build as well as exaggerated physical characteristics such as wider heads and longer limbs. Certain phenotypic characteristics are dependent on the diet of the parents. D. angusticollis practices polyandrous mating behavior. Males take part in the practice of mate guarding where they use their legs to keep hold of the female during copulation and to push competing males away. Sexual conflict can be found in this fly as females have coiled oviducts that lead to their spermathecae. In order for the male to reach the spermathecae to deposit their sperm, antagonistic coevolution of the males having a flexible aedeagus occurred.