Belongs within: Furcatergalia. The Leptophlebiidae are a group of mayflies in which the hind wings are relatively small or absent (Peters & Campbell 1991). When mayflies last for millions of years Published 10 March 2016 Of all the media available for the preservation of fossils, none approaches perfection anywhere near as close as amber. There… Continue reading Leptophlebiidae


Belongs within: Zygoptera. The Lestoidea are a group of mostly green damselflies with wing venation including aligned postnodal and postsubnodal crossveins. Many species, including members of the families Synlestidae and Megapodagrionidae, characteristically hold the wings spread at rest. Chorismagrion risi of northeastern Queensland (Australia) is assigned to its own family, with the arculus of the fore wing… Continue reading Lestoidea


Belongs within: Palaeoptera. The Megasecoptera is a group of plant-sucking insects with elongate, petiolate wings known from the Middle Carboniferous to Late Permian (Sinitshenkova 2002). Distinct paranotal lobes are present in Eubleptoptera but are lost in more derived suborders (Grimaldi & Engel 2005). Characters (from Sinitshenkova 2002): Size medium to large (wing length 10-100 mm).… Continue reading Megasecoptera


Belongs within: Panephemeroptera.Contains: Leptophlebiidae, Ephemeroidea, Caenoidea, Ephemerelloidea. The Furcatergalia are a group of mayflies characterised by bifurcate tergaliae in the nymphs, and a shortened first tarsal segment in the adults (Kluge & Sinitshenkova 2002). Major subgroups of the Furcatergalia include the Pannota, in which nymphs of the penultimate instar have wing pads fused to the… Continue reading Furcatergalia


Belongs within: Libellulidae. Libellula, the skimmers, is a Holarctic genus of dragonflies in which the wings are commonly patterned with a long pterostigma, crossed triangle and distally widening discoidal field in the fore wing. <==Libellula Linnaeus 1758L58 |–L. aenea Linnaeus 1758L58 |–L. americana Linnaeus 1758L58 |–L. angelina Selys 1883I92 |–L. chinensis Linnaeus 1758L58 |–L. depressa… Continue reading Libellula


Belongs within: Anisoptera.Contains: Gomphoidea, Cavilabiata, Telephlebiidae. The clade Eteoanisoptera includes the majority of living dragonflies (excluding only the relictual genus Epiophlebia). Members of this group have relatively broad wings that are generally held flat at rest. The larvae are able to move quickly by explosively expelling water from the rectal cavity. Within the Eteoanisoptera, the… Continue reading Eteoanisoptera


Belongs within: Zygoptera.Contains: Rhinocypha, Agrion. The Calopterygoidea are a group of damselflies characterised by broad, often colourful wings. In members of the family Calopterygidae, the wings are densely reticulate with numerous cross- and supplementary longitudinal veins, and have non-petiolate bases. Historically, this family has been recognised as the Agrionidae or Agriidae, a name that has… Continue reading Calopterygoidea


Belongs within: Palaeoptera.Contains: Permoplectoptera, Furcatergalia, Pisciformia. The Panephemeroptera are the clade of insects including the modern Ephemeroptera, mayflies, and their fossil relatives. Mayflies spend the greater part of their life cycle as aquatic nymphs (called naiads), with the emergent stage of their life-cycle (including two instars, the sub-adult subimago and the fully mature imago) being… Continue reading Panephemeroptera


Belongs within: Pterygota.Contains: Panephemeroptera, Odonatoptera, Diaphanopterodea, Megasecoptera, Eugereonoidea, Spilapteroidea. The Palaeoptera are a group of insects in which the wings are ancestrally held extending laterally from the body at rest and cannot be folded back flat over the abdomen. They include the modern mayflies and dragonflies, together with the Palaeodictyoptera, a group of usually large… Continue reading Palaeoptera


Belongs within: Eteoanisoptera.Contains: Brachystigmata. The Cavilabiata are a clade of dragonflies uniting the Cordulegastridae, Libellulidae and related families. Other than the basal Cordulegastridae, most members of this clade belong to the subclade Cristotibiata, united by a rather stout pterostigma that is not parallel-sided, a shortened hindwing CuA, and an enlarged anal loop (Bechly & Ueda… Continue reading Cavilabiata