Revision of Key to Genera from Thu, 2010-12-16 15:01

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 four 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 only pubescent then fringes of calypteres with a cluster of long,blackish setulae centrally .  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

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith