Journal of Insect Science (2009) 9 (60), 1-17

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Richard J.W. Patrock, Sanford D. Porter, Lawrence E. Gilbert and Patricia J. Folgarait (2009)
Distributional patterns of Pseudacteon associated with the Solenopsis saevissima complex in South America
Journal of Insect Science 9 (60), 1-17
Abstract: Classical biological control efforts against imported fire ants have largely involved the use of Pseudacteon parasitoids. To facilitate further exploration for species and population biotypes a database of collection records for Pseudacteon species was organized, including those from the literature and other sources. These data were then used to map the geographical ranges of species associated with the imported fire ants in their native range in South America. In addition, we found geographical range metrics for all species in the genus and related these metrics to latitude and host use. Approximately equal numbers of Pseudacteon species were found in temperate and tropical regions, though the majority of taxa found only in temperate areas were found in the Northern Hemisphere. No significant differences in sizes of geographical ranges were found between Pseudacteon associated with the different host complexes of fire ants despite the much larger and systemic collection effort associated with the S. saevissima host group. The geographical range of the flies was loosely associated with both the number of hosts and the geographical range of their hosts. Pseudacteon with the most extensive ranges had either multiple hosts or hosts with broad distributions. Mean species richnesses of Pseudacteon in locality species assemblages associated with S. saevissima complex ants was 2.8 species, but intensively sampled locations were usually much higher. Possible factors are discussed related to variation in the size of geographical range, and areas in southern South America are outlined that are likely to have been under-explored for Pseudacteon associated with imported fire ants.
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Full text of article
Database assignments for author(s): Lawrence E. Gilbert, Patricia J. Folgarait, Sanford D. Porter

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Solenopsis invicta
Solenopsis geminata
Solenopsis (genus) Argentina
Solenopsis richteri
Solenopsis saevissima
Pseudacteon litoralis (parasitoid) Bolivia
Pseudacteon litoralis (parasitoid) Paraguay
Pseudacteon litoralis (parasitoid) Brazil (NW)
Pseudacteon litoralis (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon litoralis (parasitoid) Solenopsis richteri Brazil (south)
Pseudacteon litoralis (parasitoid) Solenopsis saevissima Argentina
Pseudacteon tricuspis (parasitoid) Bolivia
Pseudacteon tricuspis (parasitoid) Paraguay
Pseudacteon tricuspis (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon tricuspis (parasitoid) Solenopsis richteri Brazil (NW)
Pseudacteon tricuspis (parasitoid) Solenopsis saevissima Argentina
Pseudacteon wasmanni (parasitoid) Solenopsis invicta Brazil (NW)
Pseudacteon wasmanni (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon curvatus (parasitoid) Bolivia
Pseudacteon curvatus (parasitoid) Paraguay
Pseudacteon curvatus (parasitoid) Solenopsis invicta Brazil (NW)
Pseudacteon curvatus (parasitoid) Solenopsis richteri Brazil (south)
Pseudacteon curvatus (parasitoid) Solenopsis saevissima Argentina
Pseudacteon browni (parasitoid) Solenopsis geminata
Pseudacteon crawfordi (parasitoid) Solenopsis geminata
Pseudacteon pradei (parasitoid) Solenopsis invicta Brazil (NW)
Pseudacteon pradei (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon bifidus (parasitoid) Solenopsis geminata
Pseudacteon obtusus (parasitoid) Chile (continental)
Pseudacteon obtusus (parasitoid) Paraguay
Pseudacteon obtusus (parasitoid) Brazil (NE)
Pseudacteon obtusus (parasitoid) Solenopsis invicta Brazil (NW)
Pseudacteon obtusus (parasitoid) Solenopsis richteri Brazil (south)
Pseudacteon obtusus (parasitoid) Solenopsis saevissima Argentina
Pseudacteon borgmeieri (parasitoid) Solenopsis invicta
Pseudacteon borgmeieri (parasitoid) Solenopsis richteri
Pseudacteon borgmeieri (parasitoid) Solenopsis saevissima Argentina
Pseudacteon borgmeieri (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon cultellatus (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon cultellatus (parasitoid) Solenopsis richteri Brazil (NW)
Pseudacteon cultellatus (parasitoid) Solenopsis saevissima Argentina
Pseudacteon nocens (parasitoid) Paraguay
Pseudacteon nocens (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon nocens (parasitoid) Solenopsis richteri
Pseudacteon nocens (parasitoid) Solenopsis saevissima Argentina
Pseudacteon nudicornis (parasitoid) Bolivia
Pseudacteon nudicornis (parasitoid) Solenopsis invicta Brazil (NW)
Pseudacteon nudicornis (parasitoid) Solenopsis richteri Brazil (south)
Pseudacteon nudicornis (parasitoid) Solenopsis saevissima Argentina
Pseudacteon calderensis (parasitoid) Solenopsis (genus) Argentina
Pseudacteon comatus (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon comatus (parasitoid) Solenopsis richteri
Pseudacteon comatus (parasitoid) Solenopsis saevissima Argentina
Pseudacteon solenopsidis (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon solenopsidis (parasitoid) Solenopsis saevissima Argentina
Pseudacteon affinis (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon affinis (parasitoid) Solenopsis saevissima Brazil (NW)
Pseudacteon antiguensis (parasitoid) Solenopsis geminata
Pseudacteon arcuatus (parasitoid) Solenopsis geminata
Pseudacteon bispinosus (parasitoid) Solenopsis geminata
Pseudacteon bulbosus (parasitoid) Solenopsis (genus) Argentina
Pseudacteon conicornis (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon dentiger (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon dentiger (parasitoid) Solenopsis invicta Brazil (NW)
Pseudacteon dentiger (parasitoid) Solenopsis saevissima Brazil (NE)
Pseudacteon disneyi (parasitoid) Argentina
Pseudacteon disneyi (parasitoid) Bolivia
Pseudacteon disneyi (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon fowleri (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon fowleri (parasitoid) Solenopsis saevissima French Guiana
Pseudacteon lenkoi (parasitoid) Solenopsis invicta Brazil (south)
Pseudacteon lenkoi (parasitoid) Solenopsis saevissima Brazil (south)
Pseudacteon spatulatus (parasitoid) Solenopsis geminata