Notes on Neotropical dragonflies, or Odonata

Abstract

The larger part of the swamp near the railroad is exposed to the sun, and this portion of the swamp apparently has resulted from the fill for the railroad grade. Back from the railroad the swamp is interspersed with smaU thickets which shade the ground, and at the extreme upper portion it ends in woods through which a small and very muddy creek flows into the swamp. In the afternoon, after several hours at the swamp, we detected for the first time a slender dragonfly in grass, and clinging to small twigs and vines just at the border or slightly back from the border of the swamj) and in the shade. Having once found it we could hardly believe we had overlooked it during the earlier part of the day. But a short time could be spent that day looking for them but we succeeded in taking 18 males. Wishing to get females and more specimens Mr.

Checklist of the dragonflies and damselflies from Guyana (Insecta: Odonata), with new records from the country

“…12 & Garrison, 2008[Pessacq 2014 Epipleoneura fuscaenea Williamson, 1915[Williamson 1915 Epipleoneura lamina Williamson, 1915[Williamson 1915 Epipleoneura pereirai Machado, 1964. 28 (Machado 1964) and in Suriname (von Ellenrieder 2011); its occurrence in Guyana extends its known distribution area within the Guiana Shield (Fig.…”

“…53). Williamson, 1915[Williamson 1915 Protoneura paucinervis Selys, 1886. 4 males, 4 females ( extends its distribution range to the east, and constitutes the first record within the Guiana Shield (Fig.…”

“…This colorful black and yellow red-eyed damselfly was found at the Berbice River and associated stream, where adults were perching, usually in tandem pairs, along the banks on dense overhanging vegetation or on emergent macrophytes, always close to water's surface. Psaironeura tenuissima (Selys, 1886) [Williamson 1915 as P. cerasina; see Machado 1985] Telebasis demarara (Williamson, 1917) [Williamson 1917] Telebasis simulata Tennessen, 2002. 12 males, 1 female (Fig.…”

“…Williamson, together with his father L.A. Williamson and his friend B.J. Rainey, collected odonates in Rockstone and Wismar in the Upper Demerara-Berbice Region and Tumatumari in Potaro-Siparuni Region during less than a month in 1912, and in the course of several years after that collecting trip described numerous new species from Guyana based on their findings (Williamson 1915(Williamson , 1916(Williamson , 1917(Williamson , 1919(Williamson , 1920(Williamson , 1923a(Williamson , 1923bWilliamson & Williamson 1924, 1930. More than 40 records and descriptions of libellulids by Ris (1919) were also based on Williamson's specimens from Guyana.…”

Redefinition of Leptobasis Selys with the synonymy of Chrysobasis Rácenis and description of L. mauffrayi sp. nov. from Peru (Odonata: Coenagrionidae)

“…Quentin to Telagrion (De Marmels & Garrison 2005), and L. mammilaris Calvert, L. cardinalis (Fraser), L. costalimai Santos, and L. yanomami De Marmels to Tuberculobasis (Machado 2009). Thus Leptobasis currently includes only five species: L. candelaria Alayo 1968, L. guanacaste Paulson 2009, L. melinogaster González-Soriano 2002 (Williamson 1915), and L. vacillans Selys 1877. Rácenis (1959) described the genus Chrysobasis to receive his new species C. buchholzi.…”