Kauaʻi record · KCA-IA-00162
Honeysuckle Aphid
Hyadaphis foeniculi
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About Honeysuckle Aphid
Honeysuckle Aphid (Hyadaphis foeniculi) is a member of Aphididae in the order Hemiptera. Its recorded origin status on Kauaʻi is introduced.
Hyadaphis foeniculi is an introduced aphid documented from Kauaʻi. Its life cycle is associated with honeysuckle as a primary host and Apiaceae such as fennel, carrot, and celery as secondary hosts in well-studied populations. Colonies feed on phloem and can transmit several plant viruses, making exact host records on Kauaʻi more important than the aphid's small size might suggest.
Kauaʻi occurrence evidence: Matsunaga, Howarth & Kumashiro (2019) Table 1 includes Kauaʻi island code 'Ka'; first-detection year shown as 2003; reported island distribution: Ha, Ka.
The cited occurrence evidence does not by itself establish current abundance or population trend on Kauaʻi.
Life cycle
In holocyclic populations the species alternates between honeysuckle and apiaceous hosts; winged and wingless parthenogenetic generations occur, with sexual stages completing the cycle. Warm-climate populations may differ, so Kauaʻi cycling needs local confirmation.
Habitat
Honeysuckle and apiaceous crops or weeds in gardens, farms and disturbed vegetation.
Food and ecological role
Phloem sap; principal hosts include Lonicera and Apiaceae such as fennel, carrot and celery.
Reproduction
Alternating-host sexual/clonal cycle is documented elsewhere; local expression on Kauaʻi is unresolved.
Movement
Winged forms migrate between primary and secondary hosts and among host patches.
Ecosystem role
Introduced sap feeder and potential plant-virus vector.
Threats and impacts
Often minor as a direct feeder but can transmit plant viruses; Kauaʻi virus associations are not established here.
Monitoring
Record host plant, winged forms and disease symptoms; distinguish from other gray-green aphids on Apiaceae.
Names and classification
- Scientific name
- Hyadaphis foeniculi
- Common names
- Honeysuckle Aphid
- Family
- Aphididae
- Order
- Hemiptera
- Record type
- species
Kauaʻi occurrence and status
- Kauaʻi occurrence
- Present
- Origin
- Introduced
- Conservation status
- Not assessed
Process and seasonal context
- Seasonal description
- Honeysuckle Aphid (Hyadaphis foeniculi) is a member of Aphididae in the order Hemiptera. Its recorded origin status on Kauaʻi is introduced.