CERAMBYCIDAE-; CURCULIONOIDEA-; SIZE-; Hymenopteran parasite size & sex allocation responses; HYMENOPTERAN-PARASITES; Atanycolus initiator & Spathius brevicaudis; Parasite utilization of subcortical host resources & host size relations; PLANT-HOSTS; Pinus thumbergii; Subcortical host resource use by hymenopteran parasitoids; JAPAN-; Seto City, Tokyo University Forest; Subcortical host resource use & host size relations Atanycolus initiator; SIZE-; Coleopteran host size & host resource utilization relationships; OVIPOSITOR-; Length, coleopteran host use & coexistence with competitor relations; COLEOPTERAN-HOSTS; Host resource use & sex allocation response to host size; RESOURCE-PARTITIONING; Coleopteran host use in comparison to potential competitor; Host size & ovipositor length relations; POPULATION-SEX-RATIO; Sex allocation in response to coleopteran host size; Comparison with sympatric potential competitor; INTERSPECIFIC-COMPETITION; Coexistence with Spathius brevicaudis; Coleopteran host resource utilization & responses to host size relations; DISTRIBUTION-WITHIN-HABITAT; Pine tree trunks, bark thickness relations; Ovipositor length, subcortical coleopteran hosts & competition implications; JAPAN-; Seto City, Tokyo University Forest; Coleopteran host resource use & responses to host size; Influencing factors & comparison with sympatric potential competitor Spathius brevicaudis; SIZE-; Coleopteran host size & host resource utilization relationships; OVIPOSITOR-; Length, coleopteran host use & coexistence with competitor relations; COLEOPTERAN-HOSTS; Host resource use & sex allocation response to host size; RESOURCE-PARTITIONING; Coleopteran host use in comparison to potential competitor; Host size & ovipositor length relations; POPULATION-SEX-RATIO; Sex allocation in response to coleopteran host size; Comparison with sympatric potential competitor; INTERSPECIFIC-COMPETITION; With Atanycolus initiator; Coleopteran host resource utilization & responses to host size relations; DISTRIBUTION-WITHIN-HABITAT; Pine tree trunks, bark thickness relations; Ovipositor length, subcortical coleopteran hosts & competition implications; JAPAN-; Seto City, Tokyo University Forest; Coleopteran host resource use & responses to host size; Influencing factors & comparison with sympatric potential competitor