Baeodasymyia (Borkent & Craig, 1999)

Borkent, Art, 2024, The Phylogeny of the Genera of Biting Midges (Diptera: Ceratopogonidae) of the World, Zootaxa 5438 (1), pp. 1-274 : 226

Baeodasymyia :

- Male with 12 flagellomeres. This feature was discussed by Borkent & Craig (1999; as character 6). There is a question of whether the fossil B. dominicana Szadziewski & Grogan has the penultimate flagellomeres as fused primitive flagellomeres 11–12. Since that time, the male of B. gustavoi Borkent has been discovered (pers. obs.; from Bolivia) and it has the same form of flagellomeres as other extant Baeodasymyia . Some other ceratopogonids have convergently acquired 12 (or fewer flagellomeres).

- Wing with low costal ratio. The ratio ranges from 0.27–0.45 for the male and 0.28–0.36 for the female ( Borkent & Craig 1999). The range for the female wing overlaps that of some other genera (i.e. some Leptoconops —0.30– 0.55, some Forcipomyia —0.33–0.71, some Paradasyhelea —0.35–0.43) but none have as low a value as that of some Baeodasymyia . Further to this, these four genera are distantly related phylogenetically, further indicating that the condition in Baeodasymyia is autapomorphic. Strict comparison between male wing costal ratios were not completed but at least some appear to have uniquely lower costal ratios.

The costal ratio is determined in different manners by different authors (some measuring from the arculus and some from the wing base) and therefore literature reports are not strictly comparable.

- foretibial spur absent. This feature is nearly unique in the family but the spur is also absent in Dasyhelea .