Results 31 to 40 of about 5,384 (163)

\u3ci\u3eEnallagma Basidens\u3c/i\u3e (Odonata: Coenagrionidae) Expands Its Range Into Michigan [PDF]

open access: yes, 2018
Enallagma basidens Calvert, a small bluet damselfly, has been expanding its range across North America since the early part of this century.
O\u27Brien, Mark F
core   +2 more sources

An updated list of Odonata of southwestern Bangladesh

open access: yesJournal of Threatened Taxa, 2018
An odonate survey was conducted throughout the southwestern region of Bangladesh, concentrating on eight districts and the Sundarban, from August 2014 to August 2016.
M. Sajjad Hossain Tuhin, M. Kawsar Khan
doaj   +1 more source

Flight of the dragonflies and damselflies [PDF]

open access: yes, 2016
This work is a synthesis of our current understanding of the mechanics, aerodynamics and visually mediated control of dragonfly and damselfly flight, with the addition of new experimental and computational data in several key areas.
Alexander DE   +29 more
core   +2 more sources

Effects of geographic distance and abiotic variables on larval Odonata assemblages in western Amazon savannah lakes

open access: yesAnais da Academia Brasileira de Ciências
Odonata, comprising the suborders Anisoptera and Zygoptera, are important bioindicators of aquatic ecosystem health due to their sensitivity to environmental changes.
EMILY L. OLIVE   +4 more
doaj   +1 more source

Description of the final instar larva of argia serva hagein selys, 1865 (Odonata coenagrionidae) [PDF]

open access: yes, 2018
The American genus Argia, with more than 100 species described, is the most speciose genus of Odonata in the world. In this contribution, the final stadium larva of Argia serva, the southernmost distributed species of Argia, is described and diagnosed ...
del Palacio, Alejandro   +2 more
core   +1 more source

Mecistogaster linearis (Fabricius) (Odonata: Coenagrionidae): First Record from Mato Grosso do Sul State, Brazil

open access: yesEntomoBrasilis, 2016
Commonly called “helicopter damselflies”, Mecistogaster species (Coenagrionidae) are recognized by their large body size in comparison with other Odonata species, ability to flap both anterior and posterior wings in opposite directions, and preference ...
Marciel Elio Rodrigues   +3 more
doaj   +1 more source

Historical changes in the phenology of British Odonata are related to climate [PDF]

open access: yes, 2007
Responses of biota to climate change take a number of forms including distributional shifts, behavioural changes and life history changes. This study examined an extensive set of biological records to investigate changes in the timing of life history ...
Ando H   +34 more
core   +1 more source

Initial preference of oviposition sites: discrimination between living and dead plant material in Sympecma fusca and Coenagrion caerulescens (Odonata: Lestidae, Coenagrionidae)

open access: yesEuropean Journal of Entomology, 2001
Sympecma fusca and Coenagrion caerulescens mainly deposit their eggs into floating dead parts of emergent plants. In their initial choice of oviposition site (selection of landing site) S. fusca does not distinguish between fresh and dead plant material,
Andreas MARTENS
doaj   +1 more source

Observations on the Nesting of \u3ci\u3eCrabro Tenuis\u3c/i\u3e (Hymenoptera: Sphecidae) [PDF]

open access: yes, 2017
Three nests of Crabro tenuis were studied during June 1971-1972 in Oswego County, New York. Females constructed shallow but lengthy, multicelled nests in sand with the cells being built in clusters, sometimes in series. Females plugged the entrances with
Kurczewski, Frank E, Miller, Richard C
core   +2 more sources

Long range movements by individuals as a vehicle for range expansion in Calopteryx splendens (Odonata: Zygoptera)

open access: yesEuropean Journal of Entomology, 2007
1. Flight activity in zygopterans is generally restricted to short-range movements associated with foraging, reproductive activity and escape. Indeed, previous studies have suggested that Calopteryx species, including C.
Louise WARD, Peter MILL
doaj   +1 more source

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