Complex sentence: The genus "Caliroa" is a group of sawflies in the family Tenthredinidae; the larvae are slimy in appearance, and sometimes referred to as "slugs" (e.g., the "pear slug"), though they are not molluscs, but insects.
Split into simpler sentences: The genus "Caliroa" is a group of sawflies in the family Tenthredinidae. The larvae are slimy in appearance, and are sometimes referred to as "slugs" (e.g., the "pear slug"), though they are not gastropods, but insects.