New distribution record of Daceton boltoni Azorsa and Sosa-Calvo, 2008 (Insecta: Hymenoptera) in the Brazilian Amazon

Abstract

Abstract:The presence of Daceton boltoni in Cotriguaçu municipality, state of Mato Grosso, southern Amazon is reported. Workers of D. boltoni were collected manually in nests on the branches of three Caxeta trees (Simarouba amara Aubl. -Simaroubaceae) from a reforestation area. In the same location where D. boltoni was recorded, Daceton armigerum (Latreille 1802) workers have also been collected, corroborating the hypothesis that these are sympatric species. This is the first record of the occurrence of this species in Mato Grosso state and the second in the Brazilian Amazon.

Ant species (Hymenoptera, Formicidae) of forest fragments and urban areas in a Meridional Amazonian landscape

“…These results can be partially explained by the presence of arboreal ants, found only in the forest fragments, such as Camponotus latangulus Roger, 1863, Ectatomma tuberculatum (Olivier, 1792) and Daceton armigerum (Latreille, 1802) that, even in forested environments, are more closely related with native vegetation (Marinho et al 2002). Interestingly, despite its wide distribution along the Amazon (Azorsa and Sosa-Calvo 2008;Vicente et al 2011), this is the first record of D. armigerum for the state of Rondônia.…”

Expanding the Distribution of the Remarkable Ant Gnamptogenys vriesi Brandão & Lattke (Formicidae, Ectatomminae): First Record From Brazil

“…In the Amazon, most of these inventories have been concentrated in the eastern and central regions (Vasconcelos et al, 2006;2010;Oliveira et al 2009;Bastos & Harada, 2011;Baccaro et al, 2012). Therefore, efforts should be made in the southern Amazon rainforest, as well as in Mato Grosso state, Brazil where the ant fauna is practically unknown (Vicente et al, 2011;, and historically the region has faced strong pressure from the agricultural frontier and intensive anthropogenic disturbances. on assemblage species richness in three Amazon forests.…”

Strumigenys fairchildi Brown, 1961 (Formicidae, Myrmicinae): first record of this rarely collected ant from Brazil

“…One S. fairchildi worker ( Figure 1) was collected in November 2013, during the beginning of the rainy season in a protected area for biodiversity conservation of the Parque Estadual do Cristalino (Figure 2), a continuous pristine forest in the Novo Mundo municipality, of Mato Grosso state (09°28ʹ S, 055°50ʹ W). In this region, known as the Arc of Deforestation (Michalski et al 2008), the ant fauna is still not very well known with just a few studies contributing to expand our knowledge of the distribution of some rarely collected species (Vicente et al 2011(Vicente et al , 2012(Vicente et al , 2015. According to the Köppen classification, the climate in this region is characterized as tropical humid (Am) with a mean annual temperature of 25°C and an annual precipitation ranging from 2,800 mm to 3,100 mm (Alvares et al 2013).…”

“…Despite growing knowledge about the diversity of Neotropical ants (Silva et al 2013;Baccaro et al 2015;Bezděčková et al 2015;Brandão et al 2015;Salazar et al 2015), the distribution of many species, especially those primarily associated with the Amazonian biome, is still virtually unknown (Fernandes et al 2015a(Fernandes et al , 2015bVicente et al 2011Vicente et al , 2012Vicente et al , 2015. Several ground-dwelling ant inventories have been carried out in what can be now considered the range of S. fairchildi (Vasconcelos et al , 2010Mertl et al 2010;Miranda et al 2012;Ryder-Wilkie et al 2009;Souza et al 2016) [DZUP]) that house a large number of specimens of both the Amazon and Brazilian ant fauna were consulted and no other specimen of S. fairchildi was found.…”