Revision of Key to Genera from Fri, 2014-01-17 09:45

Family Lonchaeidae      Interactive Key to Genera     update April 2013

1.   Poststigmatical  seta or setae present on sclerite above the anterior thoracic spiracle……… 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.  Margin of scutellum with setulae anterior to the lateral setae. Proepimeron with several setulae.  Anterodorsal setae of the anepisternum weak or absent. Genae and parafacials wide. Calypteres with whitish margins and fringes  ………………….….  Chaetolonchaea  Czerny

-  Margin of scutellum bare anterior to lateral setae. proepimeron only with one setulae. Anepisternum with long anterodorsal setae. Genae and parafacials of normal width.  Calypteres always with darkened margins and fringes  ………………………………….  Earomyia  Zetterstedt

6. . Usually, but not always, with two setae on katepisternum and plumose arista. Male genitalia; surstylus with an organized row of prensisetae located either on the inner surface, on a basal plate or along ventral margin, otherwise inner surface bare of setae, ventral margin usually simple. Fringes of calypteres with or without longer setulae. .................7

– Usually, but not always, with one seta on the katepisternum and bare arista. Male genitalia; surstylus without an organized row of prensisetae as above, inner surface always bearing setae or setulae, ventral margin often corrugated, extended or modified into spines or processes, fringes of calyptrae usually of uniform length, if occasionally longer setulae are present† these are not contrasting blackish.    ....................................... Lonchaea Fallén

7. Fringes of calypteres with 5-12 longer black or dark brown setae at the fold. Posterior margin of anepisternum usually with a vertical row of 5-6  setae.  .(Neotropical species)  .................Neosilba McAlpine

– Fringes of calypteres without a cluster of longer setae, if these are present (S. fumosa) they are not entirely black or brown. Posterior margin of anepisternum usually with a vertical row of 3-4 setae. (Afrotropical, Australasian, Palearctic and Asian species) ................Silba Macquart

†Note: Two South American species, Lonchaea pilifrons Hennig, 1948 and Lonchaea andina (Bigot, 1885) have a group of long black setae in the fringe of the calypteres but have an almost bare arista and only one strong seta on the katepisternum.




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