thirteen species in five genera of the libellulidae family were collected in a survey of dragonflies (odonata) of shiraz and its vicinity, involving 19 locations, the presented records of the libellulid dragonflies taken from the fars province comprise a first time collection of two genera, sympetrum and pantala, and seven species, orthetrum anceps schnider, orthetrum taeniolatum schneider, ort...

Habitat heterogeneity has been shown to promote co-existence of closely related species. Based on this concept, a field study was conducted on the niche partitioning of three territorial congeneric species of skimmers (Anisoptera: Libellulidae) in Northeast Algeria during the breeding season of 2011. According to their size, there is a descending hierarchy between Orthetrum nitidinerve Sélys, O...

The female of Erythrodiplax leticia Machado is described and illustrated. The geographic distribution of the species is updated, and notes on its natural history are provided.

Nephepeltia flavipennis (Holotype: Brazil, Rondônia, Governador Jorge Teixeira Municipality, Fazenda Rancho Grande, 10°31'48''S, 62°48'0''W, 165 m, J. Wiseman leg., in MNRJ) is described from the Amazon region of W Brazil, Ecuador, and N Peru. A lectotype is designated for N. aequisetis Calvert, 1909. Nephepeltia chalconota is considered to be a junior subjective synonym of N. flavifrons Karsch...

Dragonflies are the bio indicators of the aquatic ecosystem. Knowledge and studies on the diversity of dragonflies in India is very high. Identification by traditional taxonomy often leads to misidentification. Incidence of sexual dimorphism is found to be high particularly in the Libellulidae and Aeshnidae family. In order to resolve the above mentioned problem, the accurate identification of ...

Carajathemis simone n. gen., n.sp. from the state of Pará, Brazil, is described and illustrated based on 22 specimens collected in a "canga" (laterite) lake within the forest at the Flona de Carajás, Parauapebas Municipality. The new libellulid genus fits in the subfamily Sympetrinae and the male keys out to Erythemis in Garrison et al. (2006). The new taxon has a combination of characters that...

In the dragonßy Perithemis tenera Say, males defend territories around oviposition sites and defense of a site is critical for reproductive success. This study Þrst demonstrated that individual males variedconsistently inhow long theydefendedaparticular territorywithin aday(their “tenure”) and in the quality of the sites they defended. I then investigated a number of factors that may have affec...