Abstract
Abstract. A new fossil species of the silvanid flat bark beetle genus Cathartosilvanus Grouvelle is described and illustrated from Baltic amber. Cathartosilvanus siteiterralevis sp. nov. differs from recent and fossil congeners in the distinct, sharp denticle found along its posterior pronotal angle. The phenomenon of specific body parts becoming disconnected, and the compression of specimens is briefly discussed and interpreted in the context of amber taphonomy. The specimen under study appears to be an uncommon case of a weakly sclerotized beetle imago becoming entrapped in resin shortly after moulting.
Highlights
Silvanid flat bark beetles have only rarely been reported as inclusions from Eocene Baltic amber
Damage that results in the distortion and loss of body parts is the most relevant for the current study, and this form of damage can have important implications for descriptions of fossil species based on amber inclusions
Postmortem damages include distortions of external 3-D morphology and changes of body proportions. This type of damage is less typical among Baltic amber inclusions and can usually be found in insects with a soft body cuticle only
Summary
Silvanid flat bark beetles have only rarely been reported as inclusions from Eocene Baltic amber. Silvanus sp. and Nausibius sp. have been reported from the Baltic amber, and the genus Cryptamorpha Wollaston, 1854 has been mentioned from Eocene Bitterfeld amber (Hope, 1836; Berendt, 1845; Menge, 1856; Helm, 1896; Handlirsch, 1908, 1925; Klebs, 1910; Bachofen-Echt, 1949; Larsson, 1978; Spahr, 1981; Hieke and Pietrzeniuk, 1984)
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