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"Corixa" redirects here. For the pharmaceutical company, see Corixa (company).
Hesperocorixa castanea
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Nepomorpha
Family: Corixidae
Leach, 1815
Subfamilies, Genera

33 genera in 6 subfamilies

Corixidae is a family of aquatic insects in the order Hemiptera that inhabit ponds and slow moving streams, where they swim near the bottom. There are about 500 known species worldwide, in 33 genera, including the genus Sigara.

Members of the Corixidae are known in the United States as water boatmen, a term that is sometimes used in the United Kingdom for Notonecta glauca, a bug of a different family, Notonectidae, and Corixa punctata is the "lesser water boatman".[1]

Morphology and ecology[edit]

Corixidae generally have a long flattened body up to 13 millimetres (0.5 in) long and have extremely fine dark brown or black striations marking the wings. They have four long rear legs and two short front ones. The hind legs are covered with hairs and shaped like oars, hence the name "water boatman". Their front legs are scoop shaped at the tip. They also have a triangular head with short, triangular mouthparts. Corixidae dwell in slow rivers and ponds, as well as some household pools.

Unlike their relatives the backswimmers, who swim upside down near the surface of the water, Corixidae swim right side up near the bottom of ponds or streams. It is easy to tell the two types of insects apart simply by looking at where the insect is in the water and whether it is swimming upside down or not.

Corixidae are unusual among the aquatic Hemiptera in that they are mostly non-predatory, feeding on aquatic plants and algae instead of insects and vertebrates. They use their straw-like mouthparts to inject enzymes into plants. The enzymes digest the plant material, letting the insect suck the liquified food back through its mouthparts and into its digestive tract. A few species of Corixidae are predatory, but the majority are herbivorous.

Some species within this family are preyed upon by a number of amphibians including the rough-skinned newt, Taricha granulosa.[2]

The reproductive cycle of Corixidae is annual. Eggs are typically oviposited (deposited) on submerged plants, sticks, or rocks. In substrate limited waters (waters without many submerged oviposition sites), every bit of available substrate will be covered in eggs.


External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Corixidae — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

36 news items

Discovery News

Discovery News
Thu, 12 Nov 2015 13:45:00 -0800

It feeds on microbes and turns them into energy thanks to its microbial fuel cell stomach. The fuel cell powers a motor, which controls the robot's propulsion and paddles. Researchers got their inspiration from an insect called Corixidae, also known as ...

Science et Vie

Science et Vie
Sat, 21 Nov 2015 07:19:01 -0800

Les concepteurs de RowBot, des chercheurs de l'université de Bristol (Royaume-Uni), avouent s'être inspirés directement des Corises, ces punaises aquatiques ou cigales d'eau pour imaginer leur dispositif. La corise (Corixidae sp.) ou punaise aquatique ...


Tue, 24 Nov 2015 04:13:48 -0800

BRL tarafından row-bot isimiyle tanıtılan robot, "Corixidae" olarak bilinen su böceklerini taklit ediyor ve ufak gövdesi ile özel ayaklarıyla su üzerinde rahatlıka durabiliyor. Hareketli ağız bölümünü açarak kirli su üzerindeki mikro organizmaları ...


Wed, 04 Nov 2015 02:07:30 -0800

Micronecta scholtzi là một loại bọ nước hay rệp nước thuộc họ Corixidae sống ở môi trường nước ngọt và sinh trưởng phổ biến khắp châu Âu, loài côn trùng này có kích cỡ khoảng 2cm và bơi ngửa bằng hai chiếc chân dài có tác dụng như mái chèo, chúng ...

Scientific American (blog)

Scientific American (blog)
Sun, 31 Mar 2013 10:17:11 -0700

With the historic supreme court hearings this week, there has been much discussion about homosexuality*. One of the 'arguments' that you often hear from the anti-gay rights side is that being gay isn't natural. Evidence from the animal kingdom would ...
EurekAlert (press release)
Fri, 15 Jun 2012 21:18:45 -0700

Research on superhydrophobicity has seldom focused on insects that live in water. In this report, the authors investigated the water-dwelling water boatman, which belongs to the Corixidae family of the order Hemiptera, suborder Heteroptera. The water ...


Thu, 30 Jun 2011 09:58:46 -0700

Paris/Wien - Mit dem Tröten eines Elefanten (maximal 117 Dezibel) oder den Geräuschen eines Pottwals (170 Dezibel) kann die Ruderwanzenart Micronecta scholtzi nicht ganz mithalten. Die Süßwasserbewohner, die auch bei uns heimisch sind, sind auch ...

Discover Magazine (blog)

Discover Magazine (blog)
Tue, 07 Feb 2012 07:20:11 -0800

So Small, So Loud: Extremely High Sound Pressure Level from a Pygmy Aquatic Insect (Corixidae, Micronectinae). PLoS ONE http://dx.doi.org/10.1371/journal.pone.0021089. More on animal calls: City birds struggle to make themselves heard · Orang-utans ...

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