Phylum Arthropoda (Arthropods) ➔ Subphylum Hexapoda (Hexapods) ➔ Class Insecta (Insects) ➔ Order Coleoptera (Beetles) ➔ Family Chrysomelidae (Leaf beetles)

Chrysomela (Strickerus) vigintipunctata (Scopoli, 1763)

Gefleckter Weidenblattkäfer Spotted Willow Leaf Beetle

Synonyms:

Coccinella vigintipunctata Scopoli, 1763 | Melasoma vigintipunctata (Scopoli, 1763) |

  • Chrysomela vigintipunctata  2926
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2009-06-14 12:28:10
    Image number: 2926

    DE, Chemnitz, Hutholz
    2009-06-14 12:28:10

  • Chrysomela vigintipunctata  2927
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2009-06-14 12:29:45
    Image number: 2927

    DE, Chemnitz, Hutholz
    2009-06-14 12:29:45

  • Chrysomela vigintipunctata  5316
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2012-05-08 12:18:17
    Image number: 5316

    DE, Chemnitz, Hutholz
    2012-05-08 12:18:17

  • Chrysomela vigintipunctata  3612
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2010-06-24 17:34:53
    Image number: 3612

    DE, Chemnitz, Hutholz
    2010-06-24 17:34:53

  • Chrysomela vigintipunctata  3613
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2010-06-24 17:31:36
    Image number: 3613

    DE, Chemnitz, Hutholz
    2010-06-24 17:31:36

  • Chrysomela vigintipunctata, mating  5317
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata, mating
    DE, Chemnitz, Hutholz; 2012-05-28 13:44:54
    Image number: 5317
    mating
    DE, Chemnitz, Hutholz
    2012-05-28 13:44:54

  • Chrysomela vigintipunctata, larva  3611
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata, larva
    DE, Chemnitz, Hutholz; 2010-06-24 17:50:06
    Image number: 3611
    larva
    DE, Chemnitz, Hutholz
    2010-06-24 17:50:06

  • Chrysomela vigintipunctata, larva  3614
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata, larva
    DE, Chemnitz, Hutholz; 2010-06-24 17:38:40
    Image number: 3614
    larva
    DE, Chemnitz, Hutholz
    2010-06-24 17:38:40

  • Chrysomela vigintipunctata, larva  5318
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata, larva
    DE, Chemnitz, Hutholz; 2012-05-28 13:51:52
    Image number: 5318
    larva
    DE, Chemnitz, Hutholz
    2012-05-28 13:51:52

  • Chrysomela vigintipunctata, larva  5333
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata, larva
    DE, Chemnitz, Hutholz; 2012-06-09 13:21:55
    Image number: 5333
    larva
    DE, Chemnitz, Hutholz
    2012-06-09 13:21:55

  • Chrysomela vigintipunctata, larva  5334
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata, larva
    DE, Chemnitz, Hutholz; 2012-06-09 13:21:29
    Image number: 5334
    larva
    DE, Chemnitz, Hutholz
    2012-06-09 13:21:29

  • Chrysomela vigintipunctata  5437
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2012-06-29 09:42:43
    Image number: 5437

    DE, Chemnitz, Hutholz
    2012-06-29 09:42:43

  • Chrysomela vigintipunctata  5438
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2012-06-29 09:53:27
    Image number: 5438

    DE, Chemnitz, Hutholz
    2012-06-29 09:53:27

  • Chrysomela vigintipunctata  5439
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2012-06-29 09:54:26
    Image number: 5439

    DE, Chemnitz, Hutholz
    2012-06-29 09:54:26

  • Chrysomela vigintipunctata  5440
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2012-06-29 10:28:29
    Image number: 5440

    DE, Chemnitz, Hutholz
    2012-06-29 10:28:29

  • Chrysomela vigintipunctata  5441
    Chrysomela vigintipunctata (Scopoli, 1763)  Gefleckter Weidenblattkäfer  Spotted Willow Leaf Beetle  
    Chrysomela vigintipunctata
    DE, Chemnitz, Hutholz; 2012-06-29 09:49:11
    Image number: 5441

    DE, Chemnitz, Hutholz
    2012-06-29 09:49:11


Classification:
Chrysomela vigintipunctata belongs to the subfamily Chrysomelinae, tribe Chrysomelini.
Distribution:
Sweden, Central, Eastern and Southeastern Europe, east to East Asia.
Habitat:
Almost always near water bodies - on some willow species.
Description:
Length 6.5 - 8.5 mm; elytra with black suture, each with 10 black spots and variable basic colouring (whitish, yellow, orange, red); pronotum very narrow in relation to the elytra, with black centre and lateral edges in the same colour as the elytra; head and underside metallic black; tibiae on the outer edge only towards the tip with a clear groove.
Larvae light with black spots.
Biology:
The Spotted Willow Leaf Beetle Chrysomela vigintipunctata forms one generation per year.
The airworthy adults are active from April to August. They emerge from hibernation in April and search for suitable host plants. The oligophagous species lives on some willow species (Salix, Salicaceae). Both the imagines and the larvae feed on the leaves of their host plants. The larvae go through 4 larval stages in up to 2 months. To moult, they hang on a leaf with their hind end and pupate later in a similar position. The pupal period lasts about 7 - 10 days. The beetles of the new generation hatch already in June/July, eat for 3 weeks on their host plants and then go into a long autumn and winter diapause. The adults spend the winter in protected places in the foliage layer or under bark.
Chrysomela vigintipunctata can proliferate locally and defoliate some trees.
Natural enemies:
The tachinid fly Cleonice callida Meigen, 1824 (Diptera, family Tachinidae).
Some chalcid wasp species (Chalcidoidea) - Schizonotus sieboldi (Ratzeburg, 1848) and Schizonotus latus (Walker, 1835) (family Pteromalidae), and Tetrastichus melasomae Graham, 1991 (family Eulophidae).

References, further reading, links:
  1. Rheinheimer, Joachim, & Hassler, Michael: Die Blattkäfer Baden-Württembergs, 2018, 928 pages, Kleinsteuber Books (Karlsruhe), ISBN 978-3-9818110-2-5
  2. Arved Lompe: Die Käfer Europas - Ein Bestimmungswerk im Internet