Fenel Aphid
Hyadaphis foeniculi
This record describes Hyadaphis foeniculi (species). Recorded family: Aphididae. Recorded order: Hemiptera.
Identification and Appearance

Mostly grayish green with dark antennae, legs, cornicles, and cauda (tail-like structure). It may be coated by dusty white wax. Winged forms have green abdomen spotted with darker green and with dark patch around the base of each cornicle. From the Palaearctic (Central Asia), found in NY in 1879. A minor pest
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
- Suborder
- Sternorrhyncha
- Superfamily
- Aphidoidea
- Family
- Aphididae (Aphids)
- Subfamily
- Aphidinae
- Tribe
- Macrosiphini
- Genus
- Hyadaphis
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Diet and Behavior
Diet: Feed on honeysuckle ( Lonicera ) and Apiaceae. Can be a minor pest of carrots.
Additional species information
Species notes from the sources
Etymology: Author: Passerini
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Hyadaphis foeniculi. 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 Fenel Aphid (4)
Photo credits: Contributed by Claude Pilon; Additional contributions by Beatriz Moisset
Frequently Asked Questions About Fenel Aphid
What is Fenel Aphid?
Fenel Aphid (Hyadaphis foeniculi) is a species in the family Aphididae, within the order Hemiptera.
How do you identify Fenel Aphid?
Mostly grayish green with dark antennae, legs, cornicles, and cauda (tail-like structure). It may be coated by dusty white wax. Winged forms have green abdomen spotted with darker green and with dark patch around the base of each cornicle.
What does Fenel Aphid eat?
The diet of the Fenel Aphid includes Feed on honeysuckle ( Lonicera ) and Apiaceae. Can be a minor pest of carrots..
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