Hug Hugin-gamma hugin gamma Hugin-PK-2 Drm-PK-2 PK-2 Pyrokinin SVPFKPRLamide hugg Hugin PK hug hug gamma CG6371 hug-2 hugin hug-gamma hug-1 pyrokinin pyrokinin/PBAN-like Hugin-pyrokinin HUGIN HUGgamma Hug-gamma Drm-MT2 huginPK huggamma pyrokinin-2 HUG Hug-PK Hugin hug-PK gene