Distichona
Wulp, 1890
Distichona is a of in the , Exoristinae, tribe Goniini. The genus was established by Wulp in 1890 and contains eight described distributed across the Americas. As a member of the Tachinidae, species in this genus are presumably , though specific associations remain undocumented. The genus is rarely encountered, with minimal observational records available.
Pronunciation
How to pronounce Distichona: /dɪˈstɪk.oʊ.nə/
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Identification
Distichona can be distinguished from other Goniini by features of the male terminalia, particularly the distiphallus structure. The genus name refers to the two-ranked (distichous) arrangement of bristles on certain body regions. Accurate identification to level requires examination of male and comparison with .
Distribution
of Distichona have been recorded from North America (Kansas), the Caribbean (Cuba), Central America, and South America (Peru). The appears to have a New World distribution centered in the Neotropical region with some extension into the Nearctic.
Ecological Role
As members of the , in this likely function as of other , contributing to of potential . The specific and ecological impact remain unknown.
Similar Taxa
- Other Goniini generaSimilar overall body plan and bristle patterns; distinguished by male structure and specific arrangements
- Exoristinae genera with distichous bristle patternsMay share superficial resemblance; requires genitalic dissection for definitive separation
More Details
Taxonomic history
The was described by Frederik Maurits van der Wulp in 1890, with Distichona varia as the . Several species were originally described in other genera and later transferred to Distichona.
Species diversity
Eight are currently recognized: D. atrophopoda, D. auriceps, D. cubensis, D. discrepans, D. georgiae, D. kansensis, D. peruviana, and D. varia.