Acanthagrion chacoense Calvert. 1909,

DeMarmels, Jurg, 1992, Dragonflies (Odonata) From The Sierras Of Tapirapeco And Unturan, In The Extreme South Of Venezuela, Acta Biologica Venezuelica 14 (1), pp. 57-78: 62

publication ID 10.5281/zenodo.3266063


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Acanthagrion chacoense Calvert. 1909


Acanthagrion chacoense Calvert. 1909 

Figure 30View Plate IV

Material (2♂, 1♀), Base Camp. 1♂, 1♀ (in tandem)GoogleMaps  , upper Rio Mavaca (S of Base Camp)GoogleMaps  .

Remarks. The male from Base Camp was flying over a small stagnant pool in the large dearing of the camp, in the neighbourhood of the river. The tandem was caught over low bank vegetation on the Mavaca. This is the second record of the species from Venezuela.

The female was described by Calvert (1961), but the mesepisternal fossae are not mentioned. These appear as hardly noticeable shallow impressions at the median end of the furrow, which separates mesostigmal laminae from mesepisterna ( Fig. 30View Plate IV).