FIGURES 221–224 in World genera of Mastigitae: review of morphological structures and new ecological data (Coleoptera: Staphylinidae: Scydmaeninae)

FIGURES 221–224. Mastigini, morphological structures, Stenomastigus longicornis (221–222) and Stenomastigus varii (223– 224). Head and prothorax in lateral view (221); head in frontal (222), dorsal (223) and ventral (224) views. Abbreviations: ai, antennal insertion; fcg, frontoclypeal groove; gp, gular plate; hr, hypostomal ridge; lbr, labrum; mg, median groove; mn, mentum; mxp2–4, maxillary palpomere II–IV; pd, pedicel; ptp, posterior tentorial pit; sc, scape; smn, submentum.