Endophloeus gorskii Alekseev et Bukejs, 2016

ALEKSEEV, VITALII, MCKELLAR, RYAN C. & BUKEJS, ANDRIS, 2024, A revision and addition to Zopheridae (Coleoptera: Tenebrionoidea) in Baltic amber: possible connections between modern Holarctic distributions and Eocene ‘ amber forests’, Zootaxa 5536 (2), pp. 201-247 : 227

Endophloeus gorskii Alekseev et Bukejs, 2016

( Figs 30–32 )

Material examined. One specimen with collection number JDC-9315 [ JDC], Baltic amber; adult, sex unknown ( Figs 30–31 ). A complete beetle is included in a transparent, yellow amber piece with dimensions of 20× 17 mm and a maximum thickness of 5 mm, preserved without supplementary fixation. Syninclusions: numerous minute detrital particles.

One specimen with collection number ABAC 063 [ ACAB] (No. JDC-6438 ex. coll. Jonas Damzen), Baltic amber; adult, male ( Fig. 32 ) . A complete beetle with partially exposed metathoracic wings and apical portion of aedeagus is included in a transparent, yellow amber piece with dimensions of 14× 10 mm and a maximum thickness of 5 mm, preserved without supplementary fixation. Ventral portion of specimen is completely obscured by ‘milky’ opacity within amber. Syninclusions: absent.

Note. Body length of beetle JDC-9315 (including visible part of head) 3.3 mm. Body length of beetle ABAC 063 (including visible part of head) 3.5 mm. Even though the specimens are larger than the holotype, no morphological or significant differences were found, and the specimens are assigned to extinct E. gorskii .

Figures

FIGURES 30–32. Endophloeus gorskii Alekseev et Bukejs, 2016 in Baltic amber: 30—specimen No. JDC-9315, habitus, dorsal view; 31—idem, habitus, ventral view; 32—specimen No. ABAC 063 [ACAB], habitus, dorsal view. Scale bars = 0.5 mm