Achalcus melanotrichus is a species of fly in the family Dolichopodidae, first described by Josef Mik in 1878 [3].
This page represents the following TreeOfLife-200M taxonomic path.[1]
Based on observations from the TreeOfLife-200M dataset, Achalcus melanotrichus exhibits the characteristic small, non-metallic body form typical of the genus Achalcus [1, 2]. The flies appear slender with a laterally compressed thorax [2]. The coloration is generally pale, consistent with the reddish-yellow tones often observed in this genus [2]. Due to the small size of these insects, fine morphological details such as specific leg chaetotaxy or antennal structure are not clearly resolved in the available imagery [1].
The genus Achalcus is recognized for its small, elegant, non-metallic appearance [2]. Members of this genus are often characterized by specific leg features, such as the relative length of the first tarsomere of the third leg compared to the second [2]. Identification within the genus often relies on detailed examination of characters including the number of dorsocentral bristles, antennal structure, and leg chaetotaxy [2].