The genus Macromia is represented in Sri Lanka by two endemic species. In this paper a third presumed endemic species is described based on a single male specimen collected at Kirikitta, Weliweriya, Western Province in the low country wet zone of the country. Macromia weerakooni sp. nov. differs from its congeners in Sri Lanka by having turquoise blue eyes, an entirely black labrum…
The larvae of Macromia flavocolorata and M. septima from Fujian, China (Odonata: Macromiidae)
The final stadium larvae of Macromia flavocolorata and M. septima are described and illustrated for the first time. They are diagnosed against the congeners on the basis of published descriptions.
Larval biology, life cycle and habitat requirements of Macromia splendens, revisited (Odonata: Macromiidae)
Information on larval biology of Macromia splendens was compiled and supplemented by hitherto unpublished data. Larvae inhabit mainly calm river stretches, sometimes artificial impoundments, and lentic margins of lotic sections. From the majority of records it is concluded that the larvae mainly dwell in sandy substrates in shallow water, which sometimes contains little leaf litter.
Community assembly of adult odonates in lacustrine systems of an understudied world heritage site of south-eastern Zimbabwe
Odonata (dragonflies and damselflies) are efficacious for management and conservation efforts in freshwaters. In recent times, increased effort has gone into enhancing awareness, data and information on dragonflies among scientists and policymakers.
Assessment of the water quality and Odonata assemblages in three waterbodies in Ilara-Mokin, south-western Nigeria
This study investigated the biological water quality and Odonata assemblages in three waterbodies in Ilara-Mokin, with the aim of determining the ecological integrity of the ecosystems. Sampling of Odonata specimens was carried out over April–August, 2017 between 9.00am and 4.00pm under favourable conditions. Some physico-chemical parameters of the water such as dissolved oxygen, electrical conductivity,…
Structure, function and evolution of the ‘glans’ of the anisopteran vesica spermalis (Odonata)
Comparative investigations of the distal part of the vesica spermalis (‘glans’) of the anisopteran male secondary copulatory apparatus reveal three different ‘solutions’ of combining the emptying-mechanism of the sperm-reservoir with a ‘washing out’ of sperm of the male predecessor. The responsible apparatus of the glans—actually driven by pressure-changes inside the erectile organ, which is a…