Abstract
The species of the Neotropical hoverfly genus Peradon Reemer, 2013 are revised, based on morphological characters with aid of mitochondrial DNA barcodes. The resulting number of valid species is increased to 31, of which the following seven are described as new: P.ballux Reemer, sp. nov., P.brevis Reemer, sp. nov., P.costaricensis Reemer, sp. nov., P.notialus Reemer, sp. nov., P.palpator Reemer, sp. nov., P.pompiloides Reemer, sp. nov., and P.surinamensis Reemer, sp. nov. Two new synonymies are established: Microdonlangi Curran, 1925, syn. nov. and Microdonflavomarginatum Curran, 1925, syn. nov. are both junior synonyms of Muliobidens Fabricius, 1805. A neotype is designated for Microdondiaphanus Sack, 1921. This neotype, which has been reared from an ant nest, also represents the first case of a larval record for this genus. In some species, most notably in P.bidens (Fabricius) and P.normalis (Curran), discrete and distinct colour morphs are recognized, with strongly differing colouration of wings and abdomen.
Highlights
IntroductionThe genus Peradon Reemer, 2013 (type species: Mulio bidens Fabricius, 1805) was erected to accommodate several Neotropical hoverfly species formerly included in Microdon Meigen, 1803
The genus Peradon Reemer, 2013 was erected to accommodate several Neotropical hoverfly species formerly included in Microdon Meigen, 1803
No larval records are known (Reemer 2013a), but the present paper provides the first record of larvae of P. diaphanus (Sack, 1921) from a colony of an unidentified ant
Summary
The genus Peradon Reemer, 2013 (type species: Mulio bidens Fabricius, 1805) was erected to accommodate several Neotropical hoverfly species formerly included in Microdon Meigen, 1803. Reemer and Ståhls (2013a) distinguished three morphological species groups in this genus, i.e., bidens group, flavofascium group, and trivittatus group. Representatives of these species groups were recovered together with high support values in a phylogenetic clade based on an analysis of combined molecular and morphological characters (Reemer and Ståhls 2013b). Based on these findings, Peradon is considered to be a monophyletic group restricted to the Neotropics. Observations on adult P. bidens (Fabricius, 1805) and P. trivittatus (Curran, 1925) in Suriname as noted by Reemer (2014) suggest that males behave in a fashion arguably interpretable as territorial, flying off and on, and resting at the same patch of ground intermittently
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