Phyllomyza formicae

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ITIS Name

Phyllomyza formicae

Rank: 
Species
Unit Name 1: 
Phyllomyza
Unit Name 2: 
formicae
Usage: 
valid
Authors: 
Schmitz, 1923
Page number: 
46
Type data: 
England. Weybridge Surrey. ST B BMNH
Other Information: 
1M and 1F designated as holotypes
BDWD_rec_number: 
126907
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Nomenclature & Description

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Taxon Description

Phyllomyza formicae Schmitz, 1923

Biology

P. formicae larvae live in the chambers and galleries of the nests of Formica rufa ants (Donisthorpe 1927)

Phenology: May-June

In the Netherlands specimens have been collected May-June in Malaise traps. A questionable female has been collected in July.

Diagnostic Description

4 dc; gena height  less than 0.25x eye height; male basoflagellomere with short microtomentum, enlarged, dorsal and ventral margin parallel; male halter black

Morphology

Original description: Männchen. - Stirn halb so breit wie der Kopf und etwas breiter als lang (8:7); Breite der Orbite ungefähr ein Drittel der Mittelstriemenbreite. Orbiten grauschwarz, ihre Behaarung und Beborstung wie bei der vorigen Art (rubricornis). Mittelstrieme schwarz, matt, ausserhalb der Kreuzborstenreihen nur vorn mit ein paar Härchen. Kreuzborstenreihen hinten parallel, vorn schwach konvergierend. Ozellendreieck etwas kleiner als bei securicornis, daher die Hinteräste der Mittelstrieme kürzer und breiter. Backen yon 1/5 bis 1/6 Augenhöhe. Fühler schwarz, drittes Glied merklich kleiner als bei securicornis, seine grösste Breite die Hälfte des vertikalen Augendurchmessers nicht ganz erreichend, sein Ober- und Unterrand parallel, Vorderrand und Vorderecken abgerundet. Arista doppelt so lang wie das dritte Fühlerglied breit, äusserst fein pubeszent. Untergesicht mit konkavem Profil, schwarz, Mittelkiel gegen den Mundrand hin und dieser selbst bräunlich. Taster sehr gross, die Spitze der Fühler überragend, in der Mitte so breit wie das dritte Fühlerglied, nach vorn nur wenig verschmälert, tiefschwarz, am Aussenrand und auf der Unterseite ohne deutlich abstehende Haare. Rüssel schwärzlich. Thorax schwarz mit schwachem grauem Schimmer. Vier Dorsozentralen. Schildchen vierborstig, hintere Borsten konvergent, vordere nur halb so lang wie die hinteren. Hinterleib schwarz, schwach grau bereift, an der Basis etwas bräunlich. Hüften, Schenkel und Schienen schwarz, nur die Vorderschienen braun, aIle Tarsen rötlichbraun. Flügel ungetrübt, Adern gelbbraun, gewöhnliche Querader in der Mitte der Diskoidalzelle, hintere so lang wie ihre Entfernung vom Rande, gemessen auf der fünften Längsader. Schwinger schwarz. Lange 2,25 mm.
Holotype: Weybridge Surrey, England, Mai 1906 in Nest von Formica rufa H. St. J. K. Donisthorpe leg. Britisches Museum. Paratype 1: Taster beschädigt. Gewöhnliche Querader ein wenig jenseits der Mitte der Diskoidalzelle. Schwinger braun. Ibidem. Paratype 2: Ein defektes Exemplar vom selben Fundort in ColI. Donisthorpe.
Weibchen. - Dem Männchen ähnlich. Stirn fast quadratisch, Backen 1/5 bis 1/4 der Augenhöhe breit, drittes Fühlerglied kleiner, abgerundet, Fühlerborste viel länger, fast nackt. Taster kürzer als beim Männchen, mit abstehenden Haaren, braunschwarz. Rüssel schwarz, der Labellenabschnitt viel kürzer als der vorhergehende. Gewöhnliche Querader etwas jenseits der Mitte der Diskoidalzelle. Schwinger braun. Holotype: Weybridge Surrey, England. Nest von F. rufa, Mai 1906 im Britischen Museum. Paratype: Nethy Bridge, aus Larve gezogen 1909, Coll. Donisthorpe.

Distribution

Great Britain, Denmark, France

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Phyllomyza formicae, distribution map

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The Milichiidae from 'De Kaaistoep', The Netherlands

Introduction

The Milichiidae fauna of the Netherlands is quite well known due to early collectors like De Meijere and currently activ collectors like Jan Willem van Zuijlen. In the checklist for the Netherlands (Beuk 2002) nine valid species are listed and two nomina dubia . The only recent paper on the milichiid fauna of the Netherlands is by Beuk & Brake (1996).

Phyllomyza male heads (palaearctic species)


 
Species with 2 dorsocentral setae and yellow halters:
Phyllomyza tetragona, photo


Photo:
P. tetragona, male, head, lateral view (Photo: P. Brake)
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