''Cibdela janthina'' is a

sawfly Sawflies are wasp-like insects that are in the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plant ...

of the family

Argidae Argidae, commonly known as the argid sawflies, is a large family of sawflies, containing some 800 species worldwide, primarily in tropical regions. The larvae are phytophagous, and commonly can be found feeding (and often pupating) in groups, tho ...

. This species originates from

Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...

in South-East

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

but had also been introduced to

La Réunion LA most frequently refers to Los Angeles, the second most populous city in the United States of America. La, LA, or L.A. may also refer to: Arts and entertainment Music * La (musical note), or A, the sixth note *"L.A.", a song by Elliott Smi ...

in 2007 for

biological pest control Biological control or biocontrol is a method of controlling pests, whether pest animals such as insects and mites, weeds, or pathogens affecting animals or plants by using other organisms. It relies on predation, parasitism, herbivory, or ot ...

of '' Rubus alceifolius'', a

Rosaceae Rosaceae (), the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera. The name is derived from the type genus '' Rosa''. The family includes herbs, shrubs, and trees. Most species are deciduous, but som ...

species that had become an invasive species. It has a metallic dark-blue colour, the males have a length of approx. 8 mm and the females of 9.5 mm. A

parasitoid In evolutionary ecology, a parasitoid is an organism that lives in close association with its host (biology), host at the host's expense, eventually resulting in the death of the host. Parasitoidism is one of six major evolutionarily stable str ...

of ''C. janthina'' is '' Proterops borneoensis''.Achterberg &Chenon, 2009. ''The first report of the biology of Proterops borneoensis Szépligeti (Hymenoptera: Braconidae: Ichneutinae), with the description of a new species from China. ''. - Journal of Natural History 2009 Vol. 43 No. 9/12 pp. 619–63
abstract
/ref> File:Cibdela janthina 025.JPG, ''Cibdela janthina'' File:Cibdela janthina-49.jpg, ''Cibdela janthina'' File:Larvae-Cibdela janthina.jpg, ''Cibdela janthina'' larvae on '' Rubus alceifolius'' leaf

References

* Klug, J.C.F. 1834. ''Übersicht der Tenthredinetae der Sammlung (des Berliner entomologischen Museums)''. Jahrbücher der Insektenkunde 1: 233–253. Insects used for control of invasive plants Argidae Insects described in 1834 {{sawfly-stub