The pupa stage of the ant-lion is quiescent.
Pupa is named from its resemblance to a chrysalis, the apex being rounded.
The wing, when not in use, is folded d Pupa of Dyticus.
d, Its head more highly magni- c, Pupa of male.
Through this temporary protection the active pupa, which closely resembles the mature insect, subsequently bites a way by means of its strong mandibles, and rising to the surface of the water casts the pupal integument and becomes sexually adult.
An interesting feature is the difference often to be observed between an aquatic larva and pupa of the same insect in the matter of breathing.
The coleopterous pupa (figs.
Pupa incompletely obtect or free, and enclosed in the hardened cuticle of the last larval instar (puparium).
The growth of the worms during their larval stage is thus stated by Count Dandolo: - When the caterpillars are mature and ready to undergo their transformation into the pupa condition, they cease eating for some time and then begin to ascend the brushwood branches or echelletes provided for them, in which they set about the spinning of their cocoons.
Amongst insects with imperfect metamorphosis the nearest approximations to the true pupa of the Holometabola are to be found in the subimago a From Chittenden, Bull.
F, B, Pupa of Anopheles.
The difference between the nymph or false pupa and the true pupa is that in the latter a whole stage is devoted to the perfecting of the wings and body-wall after the wings have become external organs; the stage is one in which no food is or can be taken, however prolonged may be its existence.
The sub-imago of the Ephemeroptera suggests that a moult, after the wings had become functional, was at one time general among the Hexapoda, and that the resting nymph of the Thysanoptera or the pupa of the Endopterygota represents a formerly active stage in the life-history.
The whole cocoon with its enclosed pupa weighs from 15 grains for the smaller races to about 50 grains for FIG.
a, Female; b, female after loss of wings; c, male; d, worker; e, larva; g, pupa (magnified four times); f, head of larva more highly magnified.
- a, Saw-toothed Grain-Beetle (Silvanus surinamensis); b, pupa; c, larva, magnified 12 times; d, feeler of larva.
Mandibles absent in imago, very exceptionally present in pupa; first maxillae nearly always without laciniae and often without palps, or only with vestigial palps, their galeae elongated and grooved inwardly so as to form a sucking trunk.
After a resting (pseudo-pupal) stage and another larval stage, the pupa is developed.
- e,f, Owl moth (Heliothis armigera); a,b, egg, highly magnified; c, larva or caterpillar; d, pupa in earthen cell.
But the pupa hangs from the surface by means of paired respiratory trumpets on the prothorax, the dorsal thoracic surface, where the cuticle splits to allow the emergence of the fly, being thus directed towards the upper air.
Mandibles present in pupa, vestigial in imago; maxillae suctorial without specialization; first maxillae with lacinia, galea and palp. Prothorax small.
with the appendages not fixed to the body, as is the case in the pupa of most moths.
The insects complete their cocoons in from three to four days, and in two or three days thereafter the cocoons are collected, and the pupa killed to prevent its further progress and the bursting of the shell by the fully developed moth.
Only a brief reference can be made here to the fascinating subject of the life-relations of the larva, nymph and pupa, as compared with those of the imago.
But even at present we can correctly state that the true pupa is invariably connected with the transference of the wings from the interior to the exterior of the body.
Pupa free in the lowest families, in most cases incompletely or completely obtect.
- Larva and Pupa of Apis (magnified four times).
It hides itself in the ground during the winter, and in the spring it passes into the pupa stage, from which it emerges about August as the full-grown insect.
fixed to the body as in the pupa of a moth, and the likeness of pupa to perfect insect is very close.
A gnat pupa swims through the water by powerful strokes of its abdomen, while the caddis-fly pupa, in preparation for its final ecdysis, bites its way out of its subaqueous protective case and rises through the water, so that the fly may emerge into the air.
This, however, is not the case, because the greater part of the transformation precedes the disclosure of the pupa, which, as L.
- a, Pear Saw-fly (Eriocampoides limacina); b, larva without, and c, with its slimy protective coat; e, cocoon; f, larva before pupation; g, pupa, magnified 4 times; d, leaves with larvae, natural size.
Weismann (1863-1864) traced details of the growth of embryo and of pupa among the Diptera, and A.
Aristotle and Harvey (De generatione animalium, 1651) had considered the insect larva as a prematurely hatched embryo and the pupa as a second egg.
Cuticle of pupa or puparium splitting longitudinally down the back, to allow escape of imago.
In the Cyclorrhapha on the other hand, in which the actual pupa is concealed within the hardened larval skin, the imago escapes through a circular orifice formed by pushing off or through the head end of the puparium.
The standing of the Trichoptera in a position almost ancestral to the Lepidoptera is one of the assured results of recent morphological study, the mobile mandibulate pupa and the imperfectly suctorial maxillae of the Trichoptera reappearing in the lowest families of the Lepidoptera.
G, D, Pupa of Culex.
- Passive Nymph or " Pupa " of male scale-insect (Icerya).
- Pupa of Lepas pectinata in optical section.
When the larva is fully mature, and ready to change into the pupa condition, it proceeds to spin its cocoon, in which operation it ejects from both glands simultaneously a continuous and reelable thread of 800 FIG.
After a brief existence the pupa emerges from the ground, and, holding on to a plant stem by means of its powerful front legs, sets free the perfect insect through a slit along the median dorsal line of the thorax.
In some cases the pupa upon emerging constructs a chimney of soil, the use of which is not known.
- A, Wireworm; B, pupa of Click Beetle; C, adult Click Beetle (Agriotes lineatum).
He even noted the fact that the pupa of the flea is sometimes attacked and fed upon by a mite - an observation which suggested the well.
a, Calandra granaria; b, larva; c, pupa; d, C. oryzae.
From fecund egg to ravenous caterpillar (larva) to metamorphosing pupa to parental adult, the butterfly's life is profoundly meaningful.
After many years the larva is transformed into the pupa or nymph, which is distinguishable principally by the shortness of its antennae and the presence of wing pads.
- A, Wireworm; B, pupa of Click Beetle; C, adult Click Beetle (A griotes lineatum), b c a FIG.
a, Beetle; b, head of beetle with feelers and palps; c, larva; d, pupa.
It is generally considered that this is sufficient as an explanation of the existence of the pupa.
We may remark that fleas possess no wings, but are understood to possess a true pupa.
This latter order, which is not certainly known to have existed before Tertiary times, has become the most highly specialized of all insects in the structure of the pupa.
During pupation the larva undergoes complete metamorphosis, in which all its organs dissolve, leaving the pupa filled with fluid.
moult larva's final molt is into a pupa, from which an adult emerges within a week.
The lower image shows a recently formed pupa found attached to a leaf.
After about two days it makes the final molt to reveal the pretty pupa.
Also, the pesticide will not kill the pupa until they emerge as wasps.
The caterpillar will turn into a small brown pupa hidden in the leaf which will then emerge as a small brown moth.
pupa stages are under the ground and out of view.
pupa cannot be mistaken for any other species.
pupa of a moth?
pupa of a butterfly?
Fishing slightly up and across with a cdc sedge pupa I managed to hook the first two grayling and suddenly everything was alright.
A small hole maybe found after the adult wasp has emerged from the whitefly pupa.
Each individual butterfly pupa that they can ship to one of these customers can be worth between 2 and 5 UK pounds.
The pupa either shows the appendages of the perfect insect, though these are encased in a sheath and adherent to the body, or else it is entirely concealed within the hardened and contracted larval integument, which forms a barrel-shaped protecting capsule or puparium.
Usually this transformation comes with apparent suddenness, at the penultimate stage of the insect's life-history, when the passive pupa (fig.
Other writers apply the term to a " free " pupa (see infra).
Some pupae are thus more active than some nymphs; the essential character of a pupa is not therefore its passivity, but that it is the instar in which the wings first become evident externally.
7, a), and the pupa is free (fig.
When fully grown the final larval cuticle is shed, and the "free" pupa (fig.
The adult, larval and pupa stages are under the ground and out of view.
The very distinctive pupa cannot be mistaken for any other species.
The invertebrate in the is picture on the right is likely to be a pupa of a moth?
Palermo 27 What name is given to the pupa of a butterfly?
Pupa Lives in a very fragile cocoon below the soil and is said to produce a squeaking sound shortly before the adult emerges.
The majority of the flea infestation is made up fleas in various life cycle stages, meaning eggs, larva or the pupa.
Sharp (1898), the marked divergence among the Hexapoda, as regards life-history, is between insects whose wings develop outside the cuticle (Exopterygota) and those whose wings develop inside the cuticle (Endopterygota), becoming visible only when the casting of the last larval cuticle reveals the pupa.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.