Taxonomy of Neurotrixa Shannon &amp; Del Ponte (Diptera: Muscidae) with description of new species from southern Brazil

-The distribution of muscid species (Diptera) in grasslands fragments of southern Brazil was assessed using null models according to three assembly rules: (a) negatively-associated distributions; (b) guild proportionality; and (c) constant body-size ratios. We built presence/absence matrices and calculated the C-score index to test negatively-associated distributions and guild proportionality based on the following algorithms: total number of fi xed lines (F L ), total number of fi xed columns (F C ), and the effect of the average size of the populations along lines (W) for 5000 randomizations. We used null models to generate random communities that were not structured by competition and evaluated the patterns generated using three models: general, trophic guilds, and taxonomic guilds.All three assembly rules were tested in each model. The null hypothesis was corroborated in all F L X F C co-occurrence analyses. In addition, 11 analyses of the models using the W algorithm showed the same pattern observed previously. Three analyses using the W algorithm indicated that species cooccurred more frequently than expected by chance. According to analyses of co-occurrence and guild proportionality, the coexistence of muscid species is not regulated by constant body size ratios. In fl ies of the grasslands, no rule was identifi ed. Yet, a consensus did emerge from our analyses: species co-occur more frequently than expected by chance, indicating that aggregation is a recurring phenomenon among fl ies with saprophagous adults and predatory larvae. Therefore, competition does not seem to play an important role in the determination of muscid assemblages in the grasslands in Southern Brazil.

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Muscoidea (Fanniidae, Anthomyiidae, Muscidae) described by P. J. M. Macquart (Insecta, Diptera)

Pont

2012

Zoosystema

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This paper deals with the 185 new species-group taxa that P. J. M. Macquart described in the dipteran families Fanniidae, Anthomyiidae and Muscidae, together with a further 5 species-group taxa that belong to other families, 9 replacement names that he proposed, and 1 nomen nudum. Notes are provided on the Diptera collections on which Macquart worked. In the Fanniidae, there are 8 species (and 1 replacement name), in Anthomyiidae, 33 species (and 4 replacement names), and in Muscidae, 144 species (and 4 replacement names). 85 lectotypes are newly designated in order to fix the identity of the names. The following new synonyms are proposed: in Anthomyiidae:

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Taxonomy of Neurotrixa Shannon & Del Ponte (Diptera: Muscidae) with description of new species from southern Brazil

Cited by 3 publications

References 2 publications

Houseflies speaking for the conservation of natural areas: a broad sampling of Muscidae (Diptera) on coastal plains of the Pampa biome, Southern Brazil

Houseflies speaking for the conservation of natural areas: a broad sampling of Muscidae (Diptera) on coastal plains of the Pampa biome, Southern Brazil

Assembly rules in Muscid Fly assemblages in the grasslands Biome of Southern Brazil

Muscoidea (Fanniidae, Anthomyiidae, Muscidae) described by P. J. M. Macquart (Insecta, Diptera)

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