Corylophinae LeConte, 1852

Alekseev, Vitalii I., 2016, New records and species of Crepidodera Chevrolat (Coleoptera: Chrysomelidae) in Eocene European amber, with a brief review of described fossil beetles from Bitterfeld amber, Baltic Journal of Coleopterology 16 (1), pp. 21-26 : 24

Corylophinae LeConte, 1852 from Eocene

ambers.

1. Specimen No 1303-2 [ CCHH]. Figs. 5 - 6. Baltic amber. A comparatively well visible, complete beetle included in a small yellow amber piece embedded in a block of GTSpolyester resin (size 7 x 6 x 2 mm). Total body length 1.25 mm. Dark. Distinctly punctured and sparsely pubescent dorsally. Hind wings exposed. Head completely covered by the pronotum. Antennae with 3-segmented club. Pronotum transverse (0.75 as long as wide) with non-produced posterior angles. Scutellum slightly transverse. Sutural stria incomplete basally. Abdomen fully covered by elytra, with 6 visible ventrites. Tarsal formula 4-4-4. Antennal segmentation and prothoracical details not clearly visible.

2. Specimen AWI-112 [ CVIA]. Bitterfeld amber ( Germany, Sachsen-Anhalt). A complete beetle included in a small orange polished amber piece (size 14 x 11 x 2.5 mm) without any additional fixation. Total body length 1.25 mm. Dark brown. Distinctly punctured and sparsely pubescent dorsally. Head completely covered by the pronotum. Antennae clubbed. Elytra not covering the last abdominal tergite. Tarsi tetramerous. Metacoxae widely separated. Proand mesothorax covered by dense milky-white coating, antennae partly invisible .

3. Specimen AWI-114 [ CVIA]. Bitterfeld amber ( Germany, Sachsen-Anhalt). A complete beetle included in a small orange polished amber piece (size 12 x 8 x 3 mm) without any additional fixation. Total body length 1.1 mm. Dark brown. Distinctly punctured and sparsely pubescent dorsally. Head completely covered by the pronotum. Tarsal formula probably 4-4-4. Abdomen with 6 visible ventrites. Ventral side scarcely visible, antennae concealed .

Remarks. The diagnostic characters of these 3 specimens do not allow a precise assignment to any tribal and generic level at the moment and need further studies. However, these three inclusions clearly differ from Clypastraea primainterpares sp. nov. in the general body shape, body size and dorsal punctuation.