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 37-40View Plate V

Material. (6♂, 1♀). 4♂, 1♀, Base CampGoogleMaps  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. 37View 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. 41-42View 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. 38-39View 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. 43View Plate V).

Female mauritia  have a differently shaped prothoracic hind lobe ( Fig. 44View Plate V) and developed mesothoracic horns ( Fig. 45View 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.