In dragonflies, species richness shows a marked variation between lineages. Species diversification in this lineage has been linked with habitat variation, but the role of other factors, such as wing pigmentation, arguably one most conspicuous traits have not yet explored. study, using novel methodology that takes into account state-dependent speciation, extinction models, and ancestral reconst...

Dorsal ocelli are small cup-like organs containing a layer of photoreceptor cells, the short axons of which synapse at the base of the cup with dendritic terminals of ocellar nerve fibers. The ocellar ERG of dragonflies, recorded from the surface of the receptor cell layer and from the long lateral ocellar nerve, contains four components. Component 1 is a depolarizing sensory generator potentia...

during a survey of sindh and punjab provinces of pakistan, two dragonfly genera were collected and identified for the first time from the country. anaciaeshna(family aeshnidae) is a genus of large dragonflies. representatives were collectedfrom gujjo, district thatta (sindh) in august 2008 and were identified as anaciaeshna jaspidea (burmeister). the second genus was epophthalmia (family cordul...

Dorsal ocelli are small cup-like organs containing a layer of photoreceptor ceils, the short axons of which synapse at the base of the cup with dendritic terminals of ocellar nerve fibers. The ocellar ERG of dragonflies, recorded from the surface of the receptor cell layer and from the long lateral ocellar nerve, contains four components. Component 1 is a depolarizing sensory generator potentia...

This baseline field study carried out from April 2019 to September 2020, in the Pulwama district of Kashmir Himalayan Region reported a total 11 species Odonata- under two suborders namely Anisoptera (Dragonflies: 7 genera and 9 species) Zygoptera (Damselflies: 2 each). Family Libellulidae, suborder (Dragonflies) with seven distributed five was most dominant family. Pantala flavescens common sp...

All life began from a common ancestor. According to most scientists, animal life is thought to have evolved from a flagellated protist. This protist evolved by a cellular membrane folding inward, which became the first digestive system in the Animalia kingdom (Campbell, Reece &, Mitchell, 1999). As time went on, the animalia kingdom became more diversified and the class Arthropoda arose. Arthro...

This paper contains a list of the 38 species dragonflies and damselflies recorded to date on section Olifants River between Citrusdal sea at Papendorp. It is designed be used as guide for residents visitors. To help with identification species, links texts in online Atlas Dragonflies Damselflies South Africa, Lesotho Eswatini are provided. These contain comprehensive information annotated photo...

Recent increases in air temperature have affected species phenology, resulting in the earlier onset of spring life-cycle events. Trends in the first appearance of adult dragonflies across Japan were analysed using a dataset consisting of observations from 1953 to 2005. Dynamic factor analysis was used to evaluate underlying common trends in a set of 48 time series. The appearance of the first a...

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...