A peculiar male genitalia monstrosity in Anthomyza neglecta (Diptera: Anthomyzidae)
Roháček Jindřich
Acta Entomologica Musei Nationalis Pragae 50(2): 619-628, 2010
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Abstract: An unusual monstrosity of the male genitalia of Anthomyza neglecta Collin, 1944
(Anthomyzidae) is described (and illustrated) based on a specimen reared from a
tuft of sedge (Carex acuta L.) from Přemyšov Nature Reserve near Polanka nad
Odrou (Czech Republic) and compared with normal genitalia of specimens from the
same locality. The striking modifications of the genitalia of this aberrant
specimen include: (1) complete disappearance of the internal genital structures
(hypandrium, aedeagal complex) with only (somewhat enlarged) ejacapodeme
remaining outside the epandrial capsule under 8th sternum; (2) epandrium
asymmetrical, dorsoventrally compressed and anteroventrally closed, with only a
small circular opening for the alimentary canal; (3) medandrium greatly deformed
(shortened and asymmetrical); (4) gonostyli strongly asymmetrical (particularly
right gonostylus extremely malformed and wholly dissimilar to normal form) and
(5) abnormally asymmetrical cerci.
Key words: Diptera, Anthomyzidae, Anthomyza neglecta, male genitalia monstrosity, morphology
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