A new study published in Phys.org has resolved the evolutionary history of Zoraptera, the insect order known as angel insects or ground lice. These tiny, termite-like creatures have puzzled scientists for over a century due to their ambiguous evolutionary relationships.
The findings, based on phylogenomic analysis, place the Zoraptera order within the broader insect tree of life, settling the so-called 'Zoraptera problem.' This breakthrough clarifies where angel insects fit among other insect groups, a question that has eluded entomologists since the group's discovery.
Angel insects are minute and generally found under tree bark or in decaying wood. The order comprises only a few dozen known species, all of which closely resemble each other, making traditional morphological classification challenging.
The resolution of this evolutionary puzzle has implications for understanding insect biodiversity and the timing of key evolutionary events. It may also inform conservation efforts by clarifying the ecological roles of these rarely studied insects.
Experts caution that while the phylogenomic approach provides strong evidence, further sampling of Zoraptera species could refine the evolutionary tree. The study underscores how genomic tools are transforming taxonomy.