Table 3. Summary of motor neuron phenotypes from activation and silencing experiments (also informed by insertion site information). Asterisks: findings that were previously undescribed, or that differ from a previous study (Schwarz et al., 2017).

mn	Activation phenotypes	Silencing phenotypes
1	proboscis retraction	*impaired proboscis retraction
2D	*rostrum retraction from extended	no phenotype (expected redundancy)
2V	*rostrum retraction from rest	*impaired rostrum retraction
3	*haustellum flexion	*impaired proboscis retraction
4	*haustellum extension	*impaired haustellum extension
6	labellar extension	impaired labellar extension
7	*labellar abduction	*impaired labellar abduction
9	rostrum protract. and *haust. exten.	impaired rostrum protract. and *haust. exten.