not in Young Four species of coccinellids (ladybird beetles), one species of hymenopterous parasitoid and 28 species of spiders were collected from abaca and banana plants and identified. The coccinellids are Scymnus (Pullus) frontalis quadripustulatus (Herbst), S. (P.) trukensis Chapin, Scymnus sp., and Acarinus philippinensis Kapur. S. (P.) trukensis was most abundantly found among colonies of P, nigronervosa. The aphidophagous parasitoid was Aphidius sp. The life histories of the four species of coccinellids were studied. All had four larval instars and a total developmental period of 18-24 days. The spiders are as follows: Araneus sp., Argyrodes bonadea Karsch, Chiracanthium nr. ligawsolanum Barrion and Litsinger, Cyclosa insulana Costa, and three other still unidentified Cyclosa species, Harmochinus brachiatus (Thorell), Hasarius adansoni (Savigny & Audouin);, Hasarius sp. Leucage decorata Blackwell, Leucage sp. 1 & 2, Lycosa pseudoannulata, Baes et Str., Minimerus sp., Oxyopes j! avanus Thorell, O. lineatipes, (C.L. Roch), Pardosa sp., Rucinia sp., Tetragnatha nr. virescens Okusa, T. maxillosa, Thomisia sp. In addition, spiderlings of the families Salticidae and Sparasidae were also collected. Seven parasitoid species were also collected from other aphid hosts, namely, Binodoxys communis (Gahan) on Aphis gossypii Glover, A. glycines Matsumura and Toxoptera citricidus (Kirkaldy); Lipolexis scutellaris Mackauer on A. gossypii, A. craccivora Koch and Melanaphis sacchari f. indosacchari David; Aphidius sp. 2 on Myzus persicae (Sulzer); Aphidius sp. 3 on Ceratovacuna lanigera Zehntner, Aphidius sp. 4 on Sitobion ibarae (Matsumura); Aphidius gifuensis Ashmead on Myzus persicae; and Aphelinus sp. on Aphis craccivora. Araneae (Arachnida): Predator; Coccinellidae (Cucujoidea): Predator; Pentalonia nigronervosa (Aphidoidea): Host, Parasite, Prey; Aphidius (Aphidiidae): Parasite. Aphidius: Hemipteran hosts, Pentalonia nigronervosa, Philippines; Araneae, Coccinellidae: Insect prey, Pentalonia nigronervosa (Hemiptera), Philippines; Pentalonia nigronervosa: Hymenopteran parasites, Aphidius, Plant hosts, Abaca, Banana, Arachnid predators, Araneae, Insect predators, Coccinellidae (Coleoptera), Philippines. Arachnids; Arthropods; Beetles; Chelicerates; Hymenopterans; Insects; Invertebrates; True Bugs. none2008checked