Invasive Species

• Photo: Petra Broda from Freiburg im Breisgau, Germany (CC BY 2.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 2/1/26)

This insect landed on my friend Christina's bag when we sat at the river Neckar in Heidelberg, and she could take this incredible macro of it. It's really tiny. Does somebody know what it might be? (alt text from Wikimedia)

Corythucha ciliata, the sycamore lace bug, is a species of lace bug in the family Tingidae that is associated with sycamore trees.

Invasive to: Luxembourg

• Photo: Museum of Veterinary Anatomy FMVZ USP / Wagner Souza e Silva, edited by Rodrigo Tetsuo Argenton (CC BY-SA 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 1/25/26)

Specimen of Sambar deer skeleton prepared by the bone maceration technique and on display at the Museum of Veterinary Anatomy, FMVZ USP. (alt text from Wikimedia)

The sambar is a large deer native to the Indian subcontinent, South China and Southeast Asia that is listed as a vulnerable species on the IUCN Red List since 2008.

Invasive to: Australia

• Photo: Minghong (CC BY-SA 3.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 1/13/26)

Photo of Ageratum conyzoides (alt text from Wikimedia)

Ageratum conyzoides is native to Tropical America, especially Brazil, and is an invasive weed in many other regions.

Invasive to: Malawi, Madagascar, and Indonesia

• Photo: Sanjay Acharya (CC BY-SA 3.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 1/12/26)

Picture of Mediterranean Spider (Zoropsis Spinimana) (alt text from Wikimedia)

Zoropsis spinimana is a spider species belonging to the family Zoropsidae.

Invasive to: Germany

• Photo: Frédéric André (CC BY-SA 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 12/23/25)

Styela plicata observé à Fos-Saint-Gervais (France). (alt text from Wikimedia)

Styela plicata, commonly known as pleated sea squirt, is a species of tunicate in the family Styelidae.

Invasive to: Australia

• Photo: Ivar Leidus (CC BY-SA 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 12/21/25)

Red clover (Trifolium pratense). Keila, Northwestern Estonia. (alt text from Wikimedia)

Trifolium pratense, red clover, is a herbaceous species of flowering plant in the bean family, Fabaceae.

Invasive to: Shanghai

• Photo: Aris riyanto (CC BY-SA 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 12/13/25)

Peperomia pellucida (alt text from Wikimedia)

Peperomia pellucida is an annual, shallow-rooted herb, usually growing to a height of about 15 to 45 cm, it is characterized by succulent stems, shiny, heart-shaped, fleshy leaves and tiny, dot-like seeds attached to several fruiting spikes.

Invasive to: Shanghai

• Photo: fir0002 flagstaffotos [at] gmail.com Canon 20D + Sigma 150mm f/2.8 (GFDL 1.2, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 11/24/25)

Canteloupe and its cross section isolated on a white background (alt text from Wikimedia)

Cucumis melo, also known as melon, is a species of Cucumis that has been developed into many cultivated varieties.

Invasive to: Shanghai

• Photo: Cliff from Arlington, VA, USA (CC BY 2.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 11/19/25)

The Pacific or Polynesian rat is the smallest of the three rats (Rattus rattus, R. norvegicus and R. exulans) closely associated with humans. R. exulans has a slender body, pointed snout, large ears, and relatively small, delicate feet. A ruddy brown back contrasts with a whitish belly. (alt text from Wikimedia)

The Polynesian rat, Pacific rat or little rat, or kiore, is the third most widespread species of rat in the world behind the brown rat and black rat.

Invasive to: Australia

• Photo: കാക്കര (CC BY-SA 3.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 11/18/25)

Cabomba caroliniana, Algal Bloom - പായൽ, ചണ്ടി (alt text from Wikimedia)

Cabomba caroliniana, commonly known as Carolina fanwort, is a rhizomatous, aquatic, perennial herb native to North and South America.

Invasive to: European Union and Australia

• Photo: Jymm (CC BY-SA 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 11/8/25)

Grateloupia turuturu, Fort Bloqué (Ploemeur, Morbihan, Bretagne, France) (alt text from Wikimedia)

Grateloupia turuturu, commonly called the devil's tongue weed, is a marine species of Rhodophyta, a type of seaweed, native to East Asia and parts of eastern Russia.

Invasive to: Australia

• Photo: Ginelly.Q (CC0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 11/3/25)

Scolopendra gigantea in Aruba (alt text from Wikimedia)

Scolopendra gigantea, also known as the Peruvian giant yellow-leg centipede or Amazonian giant centipede, is a centipede in the genus Scolopendra.

Invasive to: United Kingdom

• Photo: 4028mdk09 (CC BY-SA 3.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 10/27/25)

österreichische Sumpfkresse (Rorippa austriaca (Crantz) Besser), fotografiert in einem Waldstück in Pforzheim (Baden-Württemberg, Deutschland) (alt text from Wikimedia)

Rorippa austriaca is a species of flowering plant in the family Brassicaceae known by the common names Austrian yellow-cress and Austrian fieldcress.

Invasive to: Germany

• Photo: Steve Kerr (CC BY 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 10/26/25)

Pycnoscelus surinamensis in Galveston, Texas, USA (alt text from Wikimedia)

The Surinam cockroach or greenhouse cockroach is a species of burrowing cockroach.

Invasive to: Sweden

• Photo: Gritsenka (CC BY-SA 4.0, no changes)
• Text: Wikipedia (CC BY-SA 4.0, accessed 10/25/25)

Parque Nacional do Iguaçu de nível Federal, localizado (a) em Céu Azul (PR), Foz do Iguaçu (PR), Matelândia (PR), Medianeira (PR), São Miguel do Iguaçu (PR) (alt text from Wikimedia)

The South American coati, also known as the ring-tailed coati or brown-nosed coati, is a coati species and a member of the raccoon family (Procyonidae), found in the tropical and subtropical parts of South America.

Invasive to: European Union