The author describes the larva! features of Habronyx heros Wesmael (Hymenoptera, Ichneu- monidae, Anomaloninae). The five larva! instars were on, the first of which was caudate and the others worm-like. The morphologicals details of the head were studied: the first instar had strongly schlerotized mandibles and well shaped maxilae and an inferior labrum with sensilla; the second instar was ligthly schlerotized, while the third, fourth and fifth instars showed a pro- gressive thickening of the peristoma, the dorsal half of the head and the inferior labrum. The key for last instar larvae (from Gauld, 1976) was modified according to the hypostomal spur varia- bility ecountered. The !ife cycle and the competition among larvae into the host was observed and outlined.
Morfologia degli stadi larvali di Habronyx heros Wesmael (Ichneumonidae - Anomaloninae) con note di biologia
PORCELLI, Francesco
1988-01-01
Abstract
The author describes the larva! features of Habronyx heros Wesmael (Hymenoptera, Ichneu- monidae, Anomaloninae). The five larva! instars were on, the first of which was caudate and the others worm-like. The morphologicals details of the head were studied: the first instar had strongly schlerotized mandibles and well shaped maxilae and an inferior labrum with sensilla; the second instar was ligthly schlerotized, while the third, fourth and fifth instars showed a pro- gressive thickening of the peristoma, the dorsal half of the head and the inferior labrum. The key for last instar larvae (from Gauld, 1976) was modified according to the hypostomal spur varia- bility ecountered. The !ife cycle and the competition among larvae into the host was observed and outlined.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
