Aeshna cornigera planaltica Calvert, 1952
publication ID |
https://doi.org/ 10.5281/zenodo.3266063 |
DOI |
https://doi.org/10.5281/zenodo.4391218 |
persistent identifier |
https://treatment.plazi.org/id/0B24F87C-FFBF-FFB1-FF08-B99EC1822163 |
treatment provided by |
Jeremy |
scientific name |
Aeshna cornigera planaltica Calvert, 1952 |
status |
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Aeshna cornigera planaltica Calvert, 1952 View in CoL
Figures 47-48 View Plate VI (larva)
Material. 1♂ (reared from last instar larva). Tamacuari GoogleMaps .
Larva. This single specimen is the only one know to me of the pantepuyan form of planaltica. It differs from a typical Brazilian planaltica (♂, ultimate instar exuviae, Rio Grande so SuI, sep 1985) kindly furnished to me by Prof. Dr. A.B.M. Machado, Belo Horizonte, as well as from ordinary North Venezuelan cornigera cornigera described by DeMarmels (1982): In the Tamacuari specimen, the prementum surpasses posteriorly the middle coxae ( Fig. 47 View Plate VI ), while in the Brazilian c;xample it ends already between the middle coxae. The male lamina at the base of the epiproct is close to half as long as the latter, and sharply pointed in the Tamacuari larva ( Fig. 48 View Plate VI ); this la. mina is obviously shorter than half the epiproct and more bluntly tipped in cornigera cornigera .
Measurements (Tamacuari). Total length 34.5; maximum width of head across compound eyes 8.0; hind femur 6.0; hind tibia 6.7.
Remarks. The single larva was found in a small mountain creek in the forest, together with many larvae of Neocordulia biancoi (see below). Unfor. tunately, the adult male escaped after having been kept alive for maturation during two days.
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