Symphylan
Guides
Scutigerella
garden symphylans, garden centipedes (misapplied)
Scutigerella is a genus of symphylans (class Symphyla) established by John A. Ryder in 1882, with S. immaculata as the type species. It is the second-largest genus in the family Scutigerellidae, comprising at least 35 extant species plus two fossil species preserved in amber. Species range from 3.5 to 9 mm in length and are characterized by a heart-shaped head with spiracles on the anterior surface, 20–50 segmented antennae, 15 tergites with notched posterior margins, and 12 pairs of legs. The genus has a subcosmopolitan distribution centered in northern temperate zones, with introduced populations in Australasia and Oceania.
Symphylella
Symphylella is a genus of symphylans in the family Scolopendrellidae, comprising approximately 49 cosmopolitan species of minute soil-dwelling arthropods. These myriapods inhabit soil and litter layers of broad-leaf and bamboo forests, where they are extracted using Berlese-Tullgren funnels. The genus is characterized by diagnostic morphological features including chaetotaxy patterns on the frons and tergites, with recent taxonomic work identifying two morphological groups based on inserted setae patterns on tergal processes.