Holocentric-chromosomes
Guides
Aphis pomi
apple aphid, green apple aphid
Aphis pomi, the green apple aphid, is a small sap-sucking insect specialized on pomoideous host plants in the Rosaceae family, particularly apple (Malus domestica). It is autoecious, completing its entire life cycle on a single host species. The species reproduces primarily through parthenogenesis during the growing season, with sexual forms appearing only in autumn to produce overwintering eggs. It is morphologically similar to Aphis spiraecola but can be reliably distinguished by the length of the ultimate rostral segment.
Loxa viridis
Loxa viridis is a stink bug species in the family Pentatomidae, characterized by holocentric chromosomes with a diploid number of 2n = 14 (12A + XY). The species exhibits inverted meiosis for sex chromosomes and has been studied cytogenetically from specimens collected in Brazil. Its distribution spans the Caribbean, Middle America, North America, South America, and the Galápagos Islands.