none FORMICIDAE-; CHEMORECEPTION-; Odours emitted by Paralipsis enervis (Hymenoptera); TACTILE-RECEPTORS; Tactile contact with Paralipsis enervis (Hymenoptera); Effect on interactions & Paralipsis survival Lasius flavus; AGGRESSIVE-BEHAVIOUR; Attacks on Paralipsis enervis (Hymenoptera); Following chemical & tactile interactions Lasius niger; FOOD-SHARING; With Paralipsis enervis (Hymenoptera); Effect on Paralipsis survival, role of chemical & tactile communication Myrmica laevinodis; Tetramorium caespitum; BEHAVIOUR-; Absence of interactions with Paralipsis enervis (Hymenoptera) Paralipsis enervis; CUTICLE-; Chemistry; STARVATION-; FOOD-SHARING; Receipt of food from Formicidae (Hymenoptera); MIMICRY-; Hemipteran host odours; Use to avoid attacks by Formicidae (Hymenoptera) & effect on survival rate; AGONISTIC-BEHAVIOUR; Attacks by Lasius flavus (Hymenoptera); Role of chemical & tactile interactions & effect on survival rate; CHEMICAL-SIGNALS; Odours, effect on interactions with Formicidae (Hymenoptera) & survival; TACTILE-SIGNALS; Interactions with Formicidae (Hymenoptera) & survival rate effect; SURVIVAL-; Chemical & tactile interactions with Formicidae (Hymenoptera) significance Anoecia corni; MIMICRY-; Of odours by Paralipsis enervis (Hymenoptera); SCENTS-; Odour mimicry by Paralipsis enervis (Hymenoptera); Effect on mimic survival rate & interactions with Formicidae (Hymenoptera)