Revision of Key to Genera from Thu, 2013-09-26 14:29

P

Family Lonchaeidae       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.  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. . Usually, but not always, with two setae on the 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 usually almost 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 a cluster of longer blackish setulae at the fold. Posterior margin of anepisternum usually with a row of five to seven evenly spaced setae.  .(Neotropical species)  .................Neosilba McAlpine

– Fringes of calypteres without a cluster of longer setulae, if these are present (S. fumosa) they are not entirely black. Posterior margin of anepisternum usually with an interrupted row of three to five 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