Skip to content
Nature By NameSign inCreate an account

Insects › Ground Beetles

Black Clock

Pterostichus madidus

4,707 observations in the source records

Learn Black Clock freeHow it works
Wildlife study photograph from iNaturalist.
(c) bez24, some rights reserved (CC BY-NC)

25 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

See all photosAdd a photo

Photos you add are credited to you, and you keep the copyright.

What the records say

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Alaska.January 1,084, February 801, March 1,255, April 1,974, May 2,846, June 3,104, July 3,321, August 2,856, September 2,097, October 1,565, November 855, December 668.
United States22,427
Alaska22,427
United Kingdom1,663
England1,433
France194
Scotland154
Wales76
Switzerland75
Aargau59
Germany58

Counts show where people looked, not only where it lives.

Traits

Physical

  • MetamorphosisUndergoes dramatic body transformation during developmentFrom its classification
  • ExoskeletonHas a hard external skeletonFrom its classification

Classification

KingdomAnimals · Animalia
PhylumArthropods · Arthropoda
ClassInsects · Insecta
OrderBeetles · Coleoptera
FamilyGround Beetles · Carabidae
GenusBlackclock Ground Beetles · Pterostichus

Sources

Remember the name next time.

Practise Black Clock with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

Create a free accountHow it works