Pterocallis maculata

Alternative names
Green-barred Alder Aphid
Description

Adult apterae of Pterocallis maculata are yellowish-green or green, with a pattern of diffuse dark green dorsal cross bands, giving an overall blotchy appearance. The body length of the aptera is 1.4 to 2.1 mm.  The P. maculata alate has a pale green abdomen and dark-tipped siphunculi.

It usually lives in sizeable colonies, often grouped around the mid-rib, and is nearly always attended by ants.

Similar Species

Pterocallis alni is also found on Alder but and they live dispersed on the leaves, not in big colonies like P. maculata. Also P. alni has few or no dark green markings whereas P. maculata has many. P. alni is hardly ever ant attended, whilst P. maculata is nearly always ant attended.

Identification difficulty
Recording advice

Good close-up photographs required.  Please state the host plant.

Habitat

Found on Alder.

When to see it

Summer to Autumn. Apterous males and oviparae occur in September-October.

Life History

Ant attended.

UK Status

Seems to be rather local in Britain and is uncommon in some areas.

VC55 Status

Status in Leicestershire and Rutland not known.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Species group:
insect - true bug (Hemiptera)
Kingdom:
Animalia
Order:
Hemiptera
Family:
Aphididae
Records on NatureSpot:
2
First record:
05/07/2022 (Smith, Peter)
Last record:
09/07/2022 (Nicholls, David)

Total records by month

% of records within its species group

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