Figure 3 in The metendosternite and penile flagellum: two unexplored character systems of pleasing fungus beetles (Coleoptera: Erotylidae)

Figure 3. The metendosternite and the flagellum in Erotylidae. A, arrow: metendosternite of Mycotretus scitulus (Erotylinae: Tritomini). B, C, dorsal and lateral view of the metendosternite of M. scitulus, respectively: apm, anterior portion of metendosternite; stk, stalk of metendosternite. D, diagram of metendosternite: ante, anterior tendons (red); apm, anterior portion of metendosternite (green); csap, central sclerotization of the anterior portion; css, central sclerotization of the stalk; fa, furcal arms (blue); if-a, anterior lobe of the internal tip (if) (yellow); if-dr, dorsal ridge of the internal tip (if); if-p, posterior lobe of the internal tip (if) (yellow); la, laminae (dark green); stk, stalk (grey); vela, ventral lamina (purple). E, an everted internal sac of Mycotretus melanophthalmus (Tritomini): abd, abdomen; fla, flagellum; is, internal sac; pen, penis; teg, tegmen. F, detail of the genitalia of M. melanophthalmus: h, head; v, virga; is, internal sac; pen, penis; str, penile struts. G, the flagellum head of Mycotretus apicalis (Tritomini), arrow showing membranous portion (mp). H, diagram of the flagellum head: abh, anterior border of head (blue); lbh, lateral borders of head (yellow); mp, membranous portion between head and virga (grey); pbh, posterior borders of head (green); arrow, inner outline of the head. Scale bars: A = 1 mm, B–C = 0.5 mm, E–F = 0.5 mm, G = 0.1 mm.