Figure 1

Adults of Lamprigera yunnana and Abscodita terminalis and their luminous organs. (a–d) Adults (a, male; b, female) and their luminous organs (dotted green regions) (c, male; d, female) of L. yunnana. (e–h) Adults (e, male; f, female) and their luminous organs (dotted green regions) (g, male; h, female) of A. terminalis. Scale bars (a–h): 1 mm. (i–l) Three-dimension reconstruction of luminous organs (blue) and tracheal system (red) of male and female L. yunnana (i, male; j, female) and A. terminalis (k, male; l, female). (m–p) Semi-thin section structures of luminous organs of male and female L. yunnana (m, male; n, female) and A. terminalis (o, male; p, female). (q–t) Transmission electron microscopic structures of luminous organs of male and female L. yunnana (q, male; r, female) and A. terminalis (s, male; t, female). PL, Photogenic layer; RL, Reflecting layer; T, Trachea.