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Y cyfeirlyfr digidol rhydd ac am ddim y gall bawb ei olygu.

Mae'n cynnwys Animalia, Plantae, Fungi, Bacteria, Archaea, Protista a phopeth byw!

Ar hyn o bryd mae gennym 491,963 o erthyglau.

Mae Wicirywogaeth yn rhydd o berchnogaeth hawlfraint, fel bywyd ei hun!

Fforio'r tacson
Feirws (dosbarthiad dal yn ansicr)

Archwiliwch Wicirywogaeth

  • Cymorth – Gwybodaeth fanwl ar sut i olygu.
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Cydweithio gyda ZooKeys

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Cyhoeddwyd y byddwn yn cydweithio gyda ZooKeys. Mae PhytoKeys hefyd wedi ymuno gyda'r prosiect ers Tachwedd 2010. Mae lluniau a delweddau ZooKeys a PhytoKeys yn cael eu huwchlwytho i Gomin Wicimedia a'u defnyddio ar Wicirywogaeth.

Awduron o nod

Adriana Hoffmann Jacoby
Born 1940. Standard IPNI form: A.E.Hoffm.

As a Chilean botanist and environmentalist, Adriana Hoffmann Jacoby has authored over a dozen books on the flora of Chile and has identified and classified more than 100 new species of cacti. She was Chile's Environment Minister in 2000 and 2001. She has advocated for the sustainable management and protection of Chilean forests, leading opposition to illegal logging in her role as coordinator of Defensores del Bosque Chileno (Defenders of the Chilean Forest) since 1992.

Hoffmann was recognized by the United Nations in 1997 as one of the 25 leading environmentalists of the decade for her efforts to protect Chile's forests. In 1999 she won the National Environmental Prize in the category of Environmental Education, awarded by Comisión Nacional del Medio Ambiente (CONAMA). For her research into Chilean flora and her work in environmental education, Hoffmann received the Luis Oyarzún Award from the Austral University of Chile in 2003. She received a Fellow Award from the Cactus and Succulent Society of America in 2009.

Hoffmann has also served on the judging panel for the United Nations Environment Programme's Sasakawa Prize.

See also: Distinguished authors of previous months.

Species of the month

Black Crazy Ant

Paratrechina longicornis

Paratrechina longicornis

Some facts on this ant:

Length: 2.5–3 mm.

Distribution: Of African or Oriental origin; spread around the world.

Diet: Omnivorous-feeding on live and dead insects, seeds, honeydew, fruits, plant exudes, and household foods.

Antennae: 12-segmented, with no club.

Color: Grayish black.

First described: By the French entomologist Pierre André Latreille in 1802 as Formica longicornis.

Paratrechina longicornis is no slow walker. This ant's name "crazy" stems from its erratic and rapid movement. It has the ability to successfully survive in highly disturbed and artificial areas, including ships at sea. Since it can live indoors with humans, it can exist at any latitude. This ant has been reported from as far north as Sweden and Estonia, and as far south as New Zealand (where it is not, however, established). It is considered a pest, nesting in apartments and other buildings, as well among others in trash, refuse, plant and tree cavities, and rotten wood. In houses nests are built in walls, narrow spaces, house plants, and empty containers. Colonies tend to be small to moderately sized, including as many as 2,000 workers and 40 queens. The colonies are highly mobile and relocate when conditions become unfavorable to these insects.

See also: Species of previous months

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