| Pentagenia | |
|---|---|
 | |
| Ephemeridae-sp | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Ephemeroptera |
| Family: | Palingeniidae |
| Genus: | Pentagenia Walsh, 1863 |
Pentagenia, similar to Hexagenia, is a genus of insect in the family Ephemeridae, commonly referred to as burrowing mayflies. [1]
Unlike Hexagenia, which inhabit mostly lightly compacted silt substrates, most species of Pentagenia inhabit compacted clay substrates. They also prefer faster flowing streams than Hexagenia. This difference in habitat creates several morphological differences between the two genera. The mandibular tusks are used to excavate an open burrow in the substrate where the mayfly resides, therefore the size and strength of the head differs between the two genera in correlation to the different substrates in which they burrow. However, the best delineating feature between the two is that Pentagenia have a pointed frontal process with a minor cleft at the point. [2]
These two species belong to the genus Pentagenia:
Data sources: i = ITIS, [3] c = Catalogue of Life, [4] g = GBIF, [5] b = Bugguide.net [6]
The Heteroceridae, or variegated mud-loving beetles, are a widespread and relatively common family of beetles. They occur on every continent except for Antarctica.
The Perilampidae are a small family within the Chalcidoidea, composed mostly of hyperparasitoids. The family is closely related to the Eucharitidae, and the eucharitids appear to have evolved from within the Perilampidae, thus rendering the family paraphyletic. As presently defined, at least 15 genera and 270 species are described worldwide. They are often brilliantly metallic, with robust mesosomae and a small, triangular metasomae. They are generally very strongly sculptured. The prothorax is typically very broad and disc-like, and the labrum is multidigitate, a feature shared with the Eucharitidae.
Amphipsocidae is a family of hairy-winged barklice in the order Psocoptera. Most species are 3.0-4.5 mm long and have many setae (hairs) on the veins and margin of the forewing. The main veins of the forewing are usually lined with two rows of setae. Like the other members of the infra-order Caeciliusetae, they have a broad, flat labrum, with well defined edges.
Heptagenia is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 20 described species in Heptagenia.
Leucrocuta is a genus of mayflies in the family Heptageniidae.
Neoephemera is a genus of large squaregill mayflies in the family Neoephemeridae. There are about six described species in Neoephemera.
Potamanthus is a genus of hacklegilled burrower mayflies in the family Potamanthidae. There are about 13 described species in Potamanthus.
Hexagenia is a genus of mayfly in the family Ephemeridae, the common burrower mayflies.
Metapogon is a genus of robber flies in the family Asilidae. There are about 13 described species in Metapogon.
Hadrokolos is a genus of robber flies in the family Asilidae. There are at least four described species in Hadrokolos.
Archilestris is a genus of robber flies in the family Asilidae. There are about six described species in Archilestris.
Hodophylax is a genus of robber flies in the family Asilidae. There are at least four described species in Hodophylax.
Proctacanthella is a genus of robber flies in the family Asilidae. There are about eight described species in Proctacanthella.
Dicropaltum is a genus of robber flies in the family Asilidae. There are about six described species in Dicropaltum.
Negasilus is a genus of robber flies in the family Asilidae. There are about five described species in Negasilus.
Eccritosia is a genus of robber flies in the family Asilidae. There are about seven described species in Eccritosia.
Utacapnia is a genus of small winter stoneflies in the family Capniidae. There are about 11 described species in Utacapnia, found primarily in the Rocky Mountains of North America. Most species in this genus were first described by Alan V. Nebeker and Arden R. Gaufin.
Atoniomyia is a genus of robber flies in the family Asilidae. There are at least two described species in Atoniomyia.
Pentagenia vittigera is a species of riverbed burrower mayfly in the family Palingeniidae. It is found in North America.
Lestomyia is a genus of robber flies in the family Asilidae. There are about six described species in Lestomyia.
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