Key to Genera
after McAlpine – Manual of Nearctic Diptera
1. Poststigmatical setae present ……… DASIOPINAE …… Dasiops Rondani
- Poststigmatical setae absent ……… LONCHAEINAE ………………. 2
2. Lunule bare ……………………………. EAROMYINAE ………………. 3
- Lunule setose ………………………. LONCHAEINI ……………….. 6
3. Scutellum with only 4 marginal setae …………. Protearomyia McAlpine
- Scutellum with additional setulae between marginal setae ………….. 4
4. Body colour brilliant golden green or bronzy-blue. Eye bare. Frons with sparse, short setulae. Anepisternum with one to several clearly distinguishable anterodorsal setae and two such posterodorsal setae. Katepisternum with one clearly distinguishable setae …………….……… Lamprolonchaea Bezzi
- Body colour predominantly black. Eye frequently pilose. Setulae on frons often dense and long. Katepisternum often with several setae. …………….. 5
5. Scutellar margin with setulae anterior to the lateral setae. Anterodorsal setae of the anepisternum weak or absent. Genae and parafacials wide. Calypteres with whitish margins and fringes ………………….…. Chaetolonchaea Czerny
- Scutellum bare anterior to lateral setae. Anepisternum with long anterodorsal setae. Genae and parafacials of normal width. Calypteres always with darkened margins and fringes …………………………………. Earomyia Zetterstedt
6. Katepisternum with one setae. Arista usually bare or short pubescent …………………………………………………………… Lonchaea Fallen (in part)
- Katepisternum with two setae. Arista bare to long plumose ………. 7.
7. Arista usually bare or short pubescent if arista long pubescent fringes of calypteres of uniform length. Prosternum bare. ……………………….. 8
- Arista plumose, if arista shortly plumose then fringes of calypteres with a cluster of long, blackish setae at the fold. Prosternum bare or setulose. ………. 9
8. Abdominal sternite 1 setulose …………………. Setisquamalonchaea Morge
- Abdominal sternite 1 bare ……………………….. Lonchaea Fallen (in part)
9. Fringes of calypteres with a cluster of long, blackish setae at the fold. Posterior margin of anepisternum with five to seven evenly spaced setae. ………………………………………………………………. Neosilba McAlpine
- Fringes of calypteres of uniform length. Posterior margin of anepisternum with three to four strong setae , with a gap in middle …………. Silba Macquart