Structure of antennal sensilla of the parasitoid, Hyposoter ebeninus (GRAV.) (Hymenoptera: Ichneumonidae) [electronic resource].

Includes reference.

Study of the antenna of Hyposoter ebeninus revealed a considerable variety of sensilla located on the antennal segments of both sexes of this parasitoid. The nlifonn antenna was composed of a scapus, pedicle and 29 flagellum segments which were larger in size in fumales than in males. The morphology and distribution of observed sensilla were determined and surveyed. The mechanosensi1la appeared as three types of sensilla trichodea hairs on all segments. Groups of sensilla campaniformia were located on the scapus of both sexes; furtbennore the scapus in females also was invaded with various surface pits characteristics of porous olfactory chemosensi1la such as the grooved smooth pegs of sensilla coeloconica and arnpullicica in addition to the pore plates. These forms were not detected in males. Three types of the sensilla basiconica (short, medium and large) were widely distributed on the flagellum segments of both sexes. The flagellum segments were highly equipped with the glandular units as associated canals especially on the apical segment in the female insect. Comparative morphometry revealed sex specific differences in number of sense organs.

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