After metamorphosis the male emerges, flies a little, then returns to the female who has remained inside the nymphal envelope, and fecundates her in her wrappings.
Under optimum and normal conditions of food supply, beginning August 27, the average nymphal life was 69.
The young hatch within twenty days and there are fournymphal stages.
If they acquired the disease in the larval or nymphal stage they retained it during molting and were infective in the subsequent stages.
There are two or more nymphal stages, and they may molt after attaining maturity.
They molt twice only, on leaving the larval and the nymphal stages.
The total length of the nymphal stage varies greatly, depending upon conditions of food supply, temperature and possibly other factors.
There are five nymphal stages, and as in the case of true bed-bugs, the duration of these is very greatly influenced by the availability of food and by temperature.
Under conditions allowing about half the normal food supply the average nymphal life was from 116.
The nymphal glands occupy the median dorsal portion of the abdomen, opening by paired pores at the anterior margin of the fourth, fifth and sixth segments.
But examples are not wanting of a more or less complete resting habit during the latest nymphal instar.
When the duns are thus hatching the fly may float for some little distance while ridding itself of the nymphal envelope and drying its wings for flight; a rise to the fly at this time is a true rise.
It knows that the Cerambyx, in his stiff armour, will never be able to turn and make for the orifice of the cell; and it takes care to fall into its nymphal sleep with its head to the door.
Should the grub forget this little formality, should it lie down to its nymphal sleep with its head at the back of the cell, the Capricorn is infallibly lost: his cradle becomes a hopeless dungeon.
In July, when the secondary larva passes into the pseudochrysalid stage, the tertiary larva passes into the nymphal stage, still inside the double vesicular envelope.
This torpor will be partly dispelled only at the moment of the passing into the nymphal stage, to return immediately afterwards and last until the insect attains the perfect state.
Be this as it may, I found at the end of August one of these pseudochrysalids which had already attained the nymphal stage.
The larva of the Meloidæ, therefore, undergo four moults before attaining the nymphal state; and after each moult their characteristics alter most profoundly.
Newly stripped of his cast-off nymphal skin, the Sacred Beetle possesses a strange costume, bearing no resemblance to the ebony black which will be the portion of the mature insect.
Uropodids frequently attach themselves to insects, especially in nymphal stages but probably are harmless (Baker and Wharton, 1952).
Blattella germanica, Blatta orientalis, and Periplaneta americana completenymphal development in less time when reared in groups rather than individually.
Nymphal females under decaying leaves at the end of November (Lucas, 1849).
She was then fed medium-sized nymphal cockroaches of which she ate an average of about one per week throughout the summer.
In fact, Roeser stated that there was never a case of cannibalism in spite of long hunger periods imposed on both nymphal and adult insects.
On three occasions nymphal cockroaches emerged within a few hours after the wasp had oviposited.
A nymphal female, found in a jungle stream at Chota Nagpur, could swim with belly or back upward.
During the single nymphal instar, the mite feeds on the host and moves about for 6-7 days.
The nymphal development for the roach, Periplaneta americana L.
Rau (1947) stated that the adults of Ischnoptera deropeltiformis showed no tendency toward gregariousness, but in the laboratory newly hatched young lived close together under bark and remained together throughout the nymphal stages.
Similarly, Griffiths and Tauber (1942a) found that isolation extended the period of nymphal development in Periplaneta americana.
He found Orthoptera (nearly all were unidentified nymphal cockroaches) in the litter of dead leaves, twigs, and other plant products in over 90 percent of the quadrats he examined.
Inside the pupa, a delicate work is being performed: the casting of the white nymphal tunic.
She steadies herself upon her trembling legs, dries her wings and takes to flight, leaving at the window of the cell her nymphal slough, which keeps intact for a very long period.
The whole substance of the future moth had disappeared, all but the nymphal wrapper, which was intact and formed a handsome Russia-leather wallet.
Within another week another molt takes place by which the tick passes from the nymphal to the sexual, or adult, stage.
The young tick molts within a week, and the second or nymphal stage of the parasite's life is thus ushered in.
While in the nymphalstate the mite may undergo one or more moults, giving rise to additional nymphal forms, that may complicate the life-history.
I too let myself be caught by it in my early days and wondered in vain what the hermit of the cotton wallet had used to inlay her nymphal dwelling so prettily withal.
Most of them are lodged in the nymphalchamber of the Capricorn; and, as the spacious recess is too wide for a single row, the cells are arranged in three parallel series.
At the moment when the Osmia is building, she is still in the larval, or at most in the nymphal stage.
All the larval and nymphal instars are active, and the wing-rudiments are outwardly visible long before the final moult.
The life of the imago endures but a short time compared with the long aquatic larval and nymphal stages.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "nymphal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
