Kuwayama medicaginis
This record describes Kuwayama medicaginis (species). Recorded family: Triozidae. Recorded order: Hemiptera.
Identification and Appearance

Genae swollen ventrally into globose lobes, clypeus large and easily visible in anterior view. Male forceps bicuspidate, anal valve large, broad basally, terminating at narrow apical epiphysis; female genital segment moderately long, with both valves nearly equal in length
Classification
Habitat and Range
Geographic Range
sw. US & Mexico ( 3 )
Diet and Behavior
Diet: Unknown ( 4 ) . Crawford recorded the host as Medicago sativa , but this is probably incorrect. Klyver recorded adults only from Chrysothamnus , Parosela , Trianthema portulacastrum , and Lepidium alyssoides ( 5 ) . Peruvian species have been associated with Asteraceae ( 3 ) .
Additional species information
Species notes from the sources
Etymology: Kuwayama medicaginis (Crawford, 1910)
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Kuwayama medicaginis. Species-specific details appear above.
Group overview
Hemiptera (true bugs) includes over 80,000 described species across cicadas, aphids, leafhoppers, shield bugs, and bed bugs. Aphids alone cost global agriculture an estimated $2.5 billion annually in crop losses.
Ecological role of the group
Many Hemiptera are essential food sources for birds and predatory insects. Cicadas provide massive nutrient pulses during emergence events - a single Brood X emergence can involve trillions of individuals across 15 states.
Economic and practical significance of the group
The brown marmorated stink bug (Halyomorpha halys) caused $37 million in apple crop losses in a single year in the U.S. Mid-Atlantic region. Bed bug infestations in the U.S. increased by 500% between 2001-2010, costing the hotel industry hundreds of millions annually.
Recorded sources for this group: USDA, EPA, University research. Imported estimates may describe particular regions or reporting periods.
Photos of Kuwayama medicaginis (5)
Photo credits: Contributed by Chris Mallory
Frequently Asked Questions About Kuwayama medicaginis
What is Kuwayama medicaginis?
Kuwayama medicaginis is a species in the family Triozidae, within the order Hemiptera.
How big is Kuwayama medicaginis?
3mm to wingtips
How do you identify Kuwayama medicaginis?
Genae swollen ventrally into globose lobes, clypeus large and easily visible in anterior view. Male forceps bicuspidate, anal valve large, broad basally, terminating at narrow apical epiphysis; female genital segment moderately long, with both valves nearly equal in length
Where is Kuwayama medicaginis found?
Range: sw. US & Mexico ( 3 )
What does Kuwayama medicaginis eat?
The diet of the Kuwayama medicaginis includes Unknown ( 4 ) . Crawford recorded the host as Medicago sativa , but this is probably incorrect. Klyver recorded adults only from Chrysothamnus , Parosela , Trianthema portulacastrum , and Lepidium alyssoides ( 5 ) . Peruvian species have been associated with Asteraceae ( 3 ) ..
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