Opisina arenosella; BIOCHEMISTRY-; FAECES-; Frass, hymenopteran parasite response; STOMACH-; Fluid; HAEMOLYMPH-; Kairomone presence, hymenopteran parasite responses; Implications for host location behaviour, laboratory study; CHEMICAL-SIGNALS; Kairomone production, tissue level comparisons; Hymenopteran parasite reactivity relations, host seeking implications; HYMENOPTERAN-PARASITES; Eriborus trochanteratus; Parasite response to kairomones, host tissue extract comparisons Eriborus trochanteratus; CHEMORECEPTION-; Kairomones responses; Lepidopteran host tissue extract comparisons, host seeking implications; EVOLUTIONARY-ADAPTATION; Kairomone receptivity, implications for lepidopteran host seeking; LEPIDOPTERAN-HOSTS; Opisina arenosella; Kairomone presence, tissue level comparisons & parasite reactivity analysis; COCOONS-; Silk webbing, kairomone presence analysis; Hymenopteran parasite receptivity, implications for host seeking behaviour none