armigera passed through six instars
in all treatments.
Duration (days) (X [+ o -] SE) of Chrysoperla externa instars
, whose larvae were fed with different preys, in laboratory (25[grados]C, RU 70 %, Photophase 12 h), DF = 27.
Duration (days) of nymphal instars
(mean [+ or -] SE) and survival of Stiretrus decastigmus (Hemiptera: Pentatomidae) fed on Microtheca ochroloma (Coleoptera: Chrysomelidae) larvae at 20, 25, and 30[degrees]C.
Overlapping in measurement extremes between instars
was registered for all structures analysed from both populations (Figure 1).
Adult grasshoppers often appear strikingly different from their fifth instars
, both in form and coloration.
Each cup was provided with treated leaves and ten 2nd instar
or five 4th instar
In the summer nymphs of Corrientes, 72.2% of individuals were males and 27.8% females; males required only five instars
to complete nymphal development, whereas females required six.
First and second instar
larvae fed on the leaf epidermis while other instar
larvae fed on all the laminae but not on the 1st and 2nd order veins.
Some differences in morphology of larval instars
I and II were found.
The presence of primary spiniform frontoclypeai sensilla provides an overt character that increases the probability of identifying first instars
Three silkworm larvae in 2nd, 4th and 6th day of fifth instar
were picked from each replication and were chilled in a refrigerator for a few minutes.