The homologies in structure of male genitalia of Cyclorrhapha (Diptera)
Gonopods have merged with a sternite 9 in structure of cyclorrhaphous genitalia. In the proof of this thesis examples of disintegration of a hypandrium on a pair of dorso-lateral sclerites and a unpaired ventral sclerite are found. The most indicative example is the genital structure of flies...
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| Format: | Article |
| Language: | Russian |
| Published: |
Russian Academy of Science. Southern Scientific Centre. Federal Research Centre
2012-12-01
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| Series: | Кавказский энтомологический бюллетень |
| Subjects: | |
| Online Access: | http://www.ssc-ras.ru/files/files/26_%20Shatalkin.pdf |
| Summary: | Gonopods have merged with a sternite 9 in
structure of cyclorrhaphous genitalia. In the proof of this
thesis examples of disintegration of a hypandrium on a pair
of dorso-lateral sclerites and a unpaired ventral sclerite
are found. The most indicative example is the genital
structure of flies of the genera Chamaepsila and Psila
(Psilidae). The hypandrial lobes designated as pregonites
and postgonites, usually are attributed to gonopods and
parameres accordingly. Gonopods in the form of distinct
appendages of a hypandrium are found at the limited
number of groups of Aschiza, for example, at a part of
representatives of families Platypezidae and Syrphidae,
and in some Schizophora. Two pairs of hypandrial
appendages in many groups of Schizophora correspond
to parameres and so-called parameral arms, i.e. are not
derivatives of gonopods. At last, in some cases hypandrial
lobes are derivatives of a sternite 9, for example, the socalled
lingula in family Syrphidae and a pair of ventral
lobes in some Pseudopomyzidae. A comparative table on
the nomenclature of epandrial and hypandrial appendages
used by different authors is submitted. |
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| ISSN: | 1814-3326 1814-3326 |