Aspidapion radiolus

Aspidapion radiolus

Description

2.7 to 3 mm. Head and pronotum black with weak metallic elytra. The rostrum is around 1.25x longer than the pronotum. There is no deep longitudinal impression on the frons (as found in A. aenum). The scutellum is a key character having a pair of raised bosses at the base and a raised tip. Only Aspidapion soror shares this feature and that species is only found on Marsh Mallow.

Similar Species

A. aenum has a deep longitudinal groove on the frons

A. soror has a rostrum the same length as the pronotum and is generally only found on Marsh Mallow.

Identification difficulty
ID checklist (your specimen should have all of these features)
  • 2.7-3.1mm
  • Tarsal claws toothed
  • 2 bumps (bosses) at base of scutellum + apically raised
  • Head, pronotum black
  • Elytra weakly metallic
  • No furrow on frons
  • Male: fore tibia with apical tooth. Female: unarmed
  • Rostrum longer than pronotum (x1.25)
Recording advice

Unless identified by a recognised expert, photographic evidence is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used. Note the beetle's size and describe the identifying characters. It is advisable to retain the specimen in case further checks are needed.

Habitat

Found on plants of the Mallow family including Hollyhocks.

When to see it

From May onwards peaking in mid September.

UK Status

A locally common and often abundant species throughout England and Wales becoming less common further north into Scotland.

VC55 Status

Occasional in Leicestershire and Rutland. There were a total of 15 VC55 records for this species up to March 2015.

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Additional images

All NatureSpot records