Morphology of Acetalius grandis. A Head dorsum and pronotum B Right antenna C Abdomen, in lateral view D Abdomen, in dorsal view E Abdomen, in ventral view. Abbreviations: amc – admesal carinae, blf – basolateral foveae, bs – basal carina, bs – basal sulcus, dc – discal carinae, fc – frontal carina, imc – inner marginal carinae, mbc – mediobasal carina, ms – median sulcus, omc – outer marginal carinae, sac – subantennal carinae, vf – vertexal foveae. Scale bars: 0.2 mm.