Amynothrips
O'Neill, 1968
Species Guides
1- Amynothrips andersoni(Alligatorweed Thrips)
Amynothrips is a of thrips in the Phlaeothripidae, erected by O'Neill in 1968. The sole described , Amynothrips andersoni, is a specialized herbivore of alligatorweed (Alternanthera philoxeroides) and has been extensively studied as a agent for this aquatic plant. Research has focused on its specificity, cold , and in managed release programs.
Pronunciation
How to pronounce Amynothrips: //æmɪˈnɒθrɪps//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Members of this can be distinguished from other Phlaeothripidae by their specialized association with Alternanthera philoxeroides and the morphological characteristics detailed in O'Neill's original 1968 description. The status of the genus means that genus-level identification effectively constitutes identification for A. andersoni.
Habitat
Strictly associated with alligatorweed (Alternanthera philoxeroides) in aquatic and semi-aquatic environments, including marshes, ponds, lakeshores, and slow-moving waterways where the plant grows.
Distribution
Native range uncertain; established in regions where introduced for of alligatorweed, including parts of the United States. The plant Alternanthera philoxeroides is native to South America and has invaded multiple continents.
Diet
Specialized feeder on alligatorweed (Alternanthera philoxeroides); feeding occurs on leaves and stems of the plant.
Host Associations
- Alternanthera philoxeroides - obligate alligatorweed; sole known for feeding and
Life Cycle
typical of Thysanoptera with , larval, prepupal, pupal, and stages. Development occurs entirely on the plant Alternanthera philoxeroides.
Behavior
Forms colonies on alligatorweed leaves and stems. Feeding damage produces characteristic scarring and distortion of plant tissues. Cold has been documented as a factor affecting establishment success in programs.
Ecological Role
herbivore and agent that reduces growth and reproductive capacity of alligatorweed . Acts as a natural enemy in its native range and in managed biocontrol programs.
Human Relevance
Primary importance as a agent for alligatorweed, an aquatic weed causing significant economic and ecological damage in wetlands, waterways, and agricultural irrigation systems. Released in multiple countries following specificity studies to ensure safety to non-target plants.
Similar Taxa
- Other Phlaeothripidae genera associated with aquatic plantsMay share preferences but lack the strict specificity to Alternanthera philoxeroides that defines Amynothrips
- Frankliniella and other generalist thrips feeding habits and broader ranges distinguish these from the obligate Amynothrips andersoni
More Details
Taxonomic history
established by O'Neill in 1968 with description of the type Amynothrips andersoni. The genus remains .
Biological control research
Subject of extensive research including specificity screening (1970s), studies, cold assessments for climate matching, and evaluation of feeding impacts on different host haplotypes.
Sources and further reading
- BugGuide
- Wikipedia
- GBIF taxonomy match
- iNaturalist taxon
- Catalogue of Life
- Alligatorweed thrips (suggested) Amynothrips andersoni O'Neill (Insecta: Thysanoptera: Phlaeothripidae)
- Amynothrips andersoni (Thysanoptera: Phlaeothripidae), a Thrips for the Biological Control of Alligatorweed. 1. Host Specificity Studies
- Biology and Life History of Amynothrips andersoni, a Thrip for the Biological Control of Alligatorweed 1
- Improving biological control of the invasive aquatic weed, Alternanthera philoxeroides: cold tolerance of Amynothrips andersoni (Thysanoptera: Phlaeothripidae) and the short-term feeding impact on different host haplotypes