The least survivorship was recorded in 5th
instars when fed with 2, 5,10 and 15% neem solution, the survivorship on these solution was recorded as (36.67), (28.33), (24.17) and (15.83) percent, respectively, as compared to untreated leaves (47.50%).
avenae (Sa) in all larval
instars of the predator; R.
The temperature also affected the duration of all nymphal
instars (Table 1).
The total post-birth developmental time (duration from birth to the beginning of the adult stage), number of
instars, and intermolt period at each
instar were initially determined using 36 specimens.
On 11 July, three nymphs (one 4th
instar and two 5th
instars) of the snakeweed grasshopper, Hesperotettix viridis viridis, were collected for comparison with A.
All in all, the 4 compounds tested showed variable degrees of efficacy and residual toxicity against both 2nd and 4th
instars larvae of S.
Thus, the aim of this work was to assess the number of juvenile
instars and duration of nymphal development of C.
myrodora larval and pupal stages duration which were fed with three Mikania species, but no
instar duration or larval morphology were taken into account.
Despite its great importance, the immature larval
instars of many families of this order are little known and even more complicated on those groups of which taxonomy is unstable in adult stage.
Heavily sclerotized areas of all first
instars collected from the Georgia habitat were light yellowish-tan, providing an obvious contrast with the glossy black sclerotized areas of the Cuban larva studied by Alarie et al.
In general, best varieties for 4th and 5th
instars was local variety which cultivated in this area, therefore it is suggested that local and Kokosa varieties integrated usage for silkworm rearing during first third
instars and 4th and 5th
instars respectively.