Archilestris
Taxonomy
This page represents the following TreeOfLife-200M taxonomic path.[1]
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Diptera
- Family: Asilidae
- Genus: Archilestris
Visual Description
Members of the genus Archilestris are robber flies characterized by distinct morphological traits that vary by species and geographic distribution. Observed specimens, such as A. magnificus, exhibit a robust body form typical of the family Asilidae. Key features include a relatively broad face, which in A. magnificus is approximately one-fourth of the head width. The antennae are diagnostic, often featuring a spoon-shaped concavity with an apical spine in more derived species, contrasting with the truncate third antennal segment found in more primitive South American species. Hind femora also show variation in robustness, ranging from slender (10–12 times as long as broad) in primitive forms to significantly thicker (6.5–7 times as long as broad) in derived species like A. magnificus.[1][2]
Distribution and Ecology
The genus Archilestris is distributed across the Americas. The species are categorized into groups based on their evolutionary traits and geographic range:[2]
- South American species: A. capnoptera, A. geijskesi, and A. excellens are considered to possess more primitive characters. A. capnoptera is found in southeastern and southern Brazil and Paraguay, inhabiting shadowed forest trails where it has been observed preying on Tipulidae. A. geijskesi is likely an inhabitant of Amazonian forests in Surinam, while the habitat of A. excellens (Ecuador and Bolivia) remains uncertain.[2]
- Central American species: A. wenzeli (Guatemala) is considered an intermediate form, likely inhabiting forests.[2]
- North American species: A. magnificus is the most derived species, inhabiting open formations and deserts, including the Mexican plateau and the Sonoran Desert in the United States (Arizona).[2]
Gallery
References
- 1 2 Dataset view for Animalia / Arthropoda / Insecta / Diptera / Asilidae / Archilestris constructed from imageomics/TreeOfLife-200M records under this taxonomic path. Hugging Face Datasets. https://huggingface.co/datasets/imageomics/TreeOfLife-200M.
- 1 2 3 4 5 Nelson Papavero; Nelson Bernardi. Archilestris Loew in the Americas, with the description of two new neotropical species (Diptera, Asilidae, Stenopogoninae). Papéis Avulsos de Zoologia. 1974. https://doi.org/10.11606/0031-1049.1974.27.p263-278.