''Agabus ramblae'' is a species of

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

s belonging to the family

Dytiscidae The Dytiscidae – based on the Greek ''dytikos'' (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live ...

. It is found in Spain and North Africa.

Etymology

''Agabus ramblae'' is named for the small, often temporary streams in the south eastern

Iberian peninsula The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defi ...

which it typically inhabits, known as "ramblas" in

Murcia Murcia (, , ) is a city in south-eastern Spain, the Capital (political), capital and most populous city of the autonomous community of the Region of Murcia, and the List of municipalities of Spain, seventh largest city in the country. It has a ...

Description

''Agabus ramblae'' can reach a length of and a width of . The head is rusty dark red. The back is reddish brown, while the underside is black with reddish brown base of

pronotum The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum ( dorsal), the prosternum ( ventral), and the propleuron ( lateral) o ...

. Elytrae have irregular rows of punctures. It possesses well developed, membranous wings.

Life cycle and reproduction

''Agabus ramblae'' has 43

chromosomal A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ...

pairs, and has an

X0 sex-determination system The XO sex-determination system (sometimes X0 sex-determination system) is a system that some species of insects, arachnids, and mammals use to determine the sex of offspring. In this system, there is only one sex chromosome, referred to as X. Male ...

. It appears to breed in spring or summer, spending winter as an adult.

Distribution and habitat

This species is widely distributed throughout the eastern Iberian peninsula, as well as the Balearic islands. It is also present in

Libya Libya (; ar, ليبيا, Lībiyā), officially the State of Libya ( ar, دولة ليبيا, Dawlat Lībiyā), is a country in the Maghreb region in North Africa. It is bordered by the Mediterranean Sea to the north, Egypt to the east, Su ...

and

Tunisia ) , image_map = Tunisia location (orthographic projection).svg , map_caption = Location of Tunisia in northern Africa , image_map2 = , capital = Tunis , largest_city = capital , ...

. The small streams and rivers in which it is typically found tend to be mineralized, with silt or clay substrate, and sparse

riparian A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks a ...

vegetation. It prefers shallow, slow moving, clean, well oxygenated water. It can occasionally be found in

eutrophic Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as "nutrient-induced increase in phytoplank ...

waters.

References

{{Taxonbar, from=Q2332734 Beetles of Europe Fauna of the Balearic Islands Beetles of North Africa Beetles described in 2001 ramblae