Information: Cerocoma schaefferi was described by Linnaeus in 1758 originally as Meloe schaefferi from Germany.
The species is distributed from the northern parts of Spain and Italy through central Europe to Belgium and the Netherlands and east to the European part of Russia and Asia Minor, also recorded from Algeria.
The male Cerocoma schaefferi has a metallic green body (occasionally bluish in females) with sparse, long yellowish setae, denser on the head and thorax. Abdomen uniformly black (in contrast to the red‑orange abdomen of Cerocoma schreberi). The legs are dark yellow, with the base of the mesofemora and the entire metafemora dark. Antennae and mouthparts, including the maxillary palpi, are yellow.
The head is transverse, with slightly protruding eyes and frontal calli raised above the head, bearing a tuft of yellowish setae on the external side.
The antennae are modified: antennomere I has a very narrow and long expansion on the external side, and the dorsal keel is very high and flattened, with a slightly curved dorsal edge. The pronotum is slightly transverse, and the protibiae are slightly expanded dorsally.
The female is not distinctly modified.
Body length: 7 - 14 mm
Peak activity: (March) April - September (depends on region)
Remarks: Cerocoma schaefferi as Cerocoma schreberi is a thermophilous species that prefers warm, dry, and open habitats such as dry grasslands, stony slopes, field margins, and steppe-like areas. Adults are active from May to August and are often found visiting flowers of Asteraceae (e.g., yarrow, chamomile) and Apiaceae, where they feed on pollen and floral tissues. The species shows a strong dependence on these flowering plants for adult nutrition and reproduction. Larvae are parasitoids of solitary wasps, particularly species in the genus Tachysphex, developing inside wasp nests by consuming paralyzed prey.
Distribution: Albania, Algeria??, Armenia, Austria, Azerbaijan, Belgium, Bosnia and Herzegovina, Bulgaria, Belarus, Croatia, Czech Republic, France, Germany, Greece, Hungary, Italy, Kazakhstan, Latvia??, Macedonia, Moldova, Montenegro, Netherlands, Poland, Portugal, Romania, Russia, Slovakia, Slovenia, Spain, Serbia, Syria, Switzerland, Turkey, Ukraine
Taxonomic classification:
Material examined (& observation):
Our observation period: June ~ July
Sampling Methods: on bush and flowers 
Slovakia
