Figure 4
From: A new marsh beetle from mid-Cretaceous amber of northern Myanmar (Coleoptera: Scirtidae)

Comparison between Varcalium lawrencei gen. et sp. nov. and its extant relatives. (A–C) Varcalium lawrencei gen. et sp. nov., head, mirrored, with antennae (partly) removed. (D, E) Byrrhopsis sp., head, with antennae and mouthparts (partly) removed. (F, G) Perplexacara latusmandibulara, head. (H) Prionocyphon ornatus, head. (I) Macrohelodes sp., head. (J, K) Varcalium lawrencei gen. et sp. nov., aedeagus inside the abdomen, horizontal section (J) or “Sum along Ray” rendering (K), with arrowhead showing the cuticular rings (J). (L) Perplexacara latusmandibulara, aedeagus inside the abdomen. Abbreviations: SAR, supraantennal ridge; SGR, subgenal ridg; SOC, subocular carina; pe, penis; tg, tegmen. Scale bars: 500 μm.