Metaleptobasis fernandezi Racenis. 1955, Racenis, 1955

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: 63

publication ID 10.5281/zenodo.3266063


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Metaleptobasis fernandezi Racenis. 1955


Metaleptobasis fernandezi Racenis. 1955  

Figures 37-40 View Plate V

Material. (6♂, 1♀). 4♂, 1♀, Base Camp GoogleMaps   2♂, Siapa 2. GoogleMaps  

Remarks. Metaleptobasis Calvert   is a difficult genus, chiefly because the amplitude of intraspe. cific variability of most species is unknown. M. fernandezi was described from a single female ( Racenis, 1955). The prothoracic hind lobe of the present female ( Fig. 37 View Plate V ) corresponds well with the holotype and with the figure given by Geijs. kes (1932, sub manicaria   , see Racenis, 1955). The mesothoracic horns are reduced to mere tuber. cles. The thoracic middorsal stripe is slightly broader in the female from Base Camp than in the type. With some doubts I am referring also the sixmales to iernandezi   . The male of this species has not so far been described. The present specimens are exceedingly similar to M.   mauritia Williamson   , but differ from that species (only 1♂ compared: Valencia, Trinidad, 7 Apr 1965, T. W. Donnelly leg.) in the superior anal appendages: In mauritia   they are slightly narrower and less sharply angled internally in the apical third; the tip is clearly marked- off from the internal margin, and is reddish ( Figs. 41-42 View Plate V ). In fernandezi   the superior appendages are slightly broader and more angled internally in the apical third; the transition between internal margin and tip is smooth, the tip dark brown ( Figs. 38-39 View Plate V ). The hind border of the pronotum has a metallic green spot in the middle in male mauritia   , which is absent in fernandezi   . The mesothoracic horns are similarly shaped in both species (males) ( Figs. 40. 43 View Plate V ).

Female mauritia   have a differently shaped prothoracic hind lobe ( Fig. 44 View Plate V ) and developed mesothoracic horns ( Fig. 45 View Plate V ). The specimens from Base Camp were collected together with M. brysonima   , but the two males from Siapa 2 were taken in a (then) dry hollow in the forest.