THE BIOLOGICAL DIFFERENCES BETWEEN PUPA OF TWO SPECIES OF LADYBIRD Hippodamia variegata AND Exochomus pubescens (COL.: COCCINELLIDAE)

A study on differences between two species of ladybird, H. variegata Goeze and E. pubescens Kuster determined that they there were differences in terms of size, color of pupa shell, shape of pupa shell, pattern of adult emergence and length of adult from emergence out of the shell. In this research, pupa length of E. pubescens was 4.3 – 4.8 mm and pupa length of H. variegata was 3.6 – 4.2 mm. Shell color of E. pubescens pupa was pale brown or gray, but shell color H. variegata pupa was orange with black lines on it. Length of body in adult H. variegata after discarding the pupa shell was 3.7 – 4.2 mm and length of body in adult of E. pubescens after discarding the pupa shell was 3.7 – 4.1 mm. There were differences in appearance between pupae of the two ladybird species. And the process of adult emergence from the shell was different for each species; adult E. pubescens emerged from a wide suture in the shell but the adult H. variegata emerged from a hole in the shell. Duration of pupation (development of the adult state inside the shell) at 25° C, in relative humidity 65 ± 5, with 14 hours daylight and 10 hours of darkness took 72 hours (3 days) for H. variegata and 120 hours (5 days) for E. Pubescens.