Phylum Arthropoda (Arthropods) ➔ Subphylum Hexapoda (Hexapods) ➔ Class Insecta (Insects) ➔ Order Coleoptera (Beetles) ➔ Family Chrysomelidae (Leaf beetles)
Donacia versicolorea (Brahms, 1790)
Laichkraut-Schilfkäfer
Synonyms and other combinations:
Donacia bidens Olivier, 1791 | Donacia cincta Germar, 1810 | Donacia suffriani Westhoff, 1882 |
Classification:
Donacia versicolorea belongs to the subfamily Donaciinae, tribe Donaciini.Distribution:
Europe, Siberia to Kamchatka, Mongolia.Habitat:
In standing water bodies (ponds, moor lakes).Description:
Length 5.5 - 10 mm; elytra usually blackish with a bluish shimmer, violet or greenish on the sides, usually with a similar stripe on the back; elytra hairless, broad, flat, strongly narrowed towards tip; tip of elytra transversely truncated, outer corners rounded; dotted stripes strong, spaces narrow, dots of side stripes almost wider than spaces; Upper side of pronotum glossy with fine dots; 3rd antennal segment shorter than 1st antennal segment; antennae and legs partly yellow or reddish brown; hind femora of male protruding abdomen, of female reaching end of abdomen; the hind femora of the male are two-toothed, those of the female with one tooth or toothless.A similar species is the slightly larger Donacia crassipes.
Biology:
The adults of Donacia versicolorea can be found from May, mostly in July and August on the leaves of floating-leaf pondweed (Potamogeton natans, Potamogetonaceae). The beetles feed on the upper surface of the floating leaves. Occasionally they also feed on arrowhead (Sagittaria) and bur-reed (Sparganium).The eggs are layed by the females on the leaf-underside. The species hibernates in the last larval stage and pupates in spring.
Donacia versicolorea undergoes a 2-year development cycle.
References, further reading, links:
- Rheinheimer, Joachim, & Hassler, Michael: Die Blattkäfer Baden-Württembergs, 2018, 928 pages, Kleinsteuber Books (Karlsruhe), ISBN 978-3-9818110-2-5
- Arved Lompe: Die Käfer Europas - Ein Bestimmungswerk im Internet
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