scholarly journals THE LARVA AND CHRYSALIS OF CHRYSOPHANUS DIONE

1893 ◽  
Vol 25 (1) ◽  
pp. 22-22
Author(s):  
Henry Skinner
Keyword(s):  
Common Species ◽  
Food Plant ◽  
Entire Body ◽  
Early Stages ◽  
Dorsal Stripe

Some time ago Mr.Henry G. Willard, of Grinnell, Iowa, very kindly sent me of the full grown larvæ of this species. I made a few notes at the time which may be of use, owing to the fact that nothing has been publihsed in regard to the early stages of this butterfly. The food plant at the home of the insect is Rumex longifolius, but they readily ate our common species of dock found here. The full grown larva were onisciform in shape, grass greein in colour, and 20 mm in length. Most of them had a narrow, claret-coloured dorsal stripe, and the entire body, under a glass, was seen to be clothed with minute black hairs.

NOTES ON THE EARLY STAGES OF CATOCALÆ

1901 ◽  
Vol 33 (11) ◽  
pp. 298-300
Author(s):  
G. M. Dodge ◽  
E. A. Dodge
Keyword(s):  
Central Line ◽  
Food Plant ◽  
Mature Larva ◽  
Early Stages ◽  
Black Band ◽  
Front Running ◽  
Dorsal Stripe

Catocala retecta, Grt.Food-plant, hickory. Length of mature larva, two and one-half inches. Head rather flat, as broad as first segment, gray striped with dark brown, and with a broad black band, ragged iu front, running up each side to top of lobe, but not continued over the summit.The dorsal stripe consists of a series of rounded, brown patches with a black central line; tubercles, although not large, tipped with white, and conspicuous; subdorsal stripes brown, interrupted and indistinct.

Seasonal Occurrence of Thrips (Thysanoptera) on Cowpeas in Western Arkansas and Northeast Oklahoma

1993 ◽  
Vol 28 (4) ◽  
pp. 427-432 ◽  
Author(s):  
M. B. Sweeden ◽  
Paul J. McLeod
Keyword(s):  
Common Species ◽  
The Other ◽  
Seasonal Occurrence ◽  
Early Stages ◽  
Growing Seasons ◽  
Flower Thrips ◽  
Thrips Species ◽  
Frankliniella Fusca ◽  
Tobacco Thrips ◽  
Soybean Thrips

Three thrips species were commonly found in western Arkansas and northeast Oklahoma cowpea fields during the 1991 and 1992 growing seasons. These were the tobacco thrips, Frankliniella fusca (Hinds), the flower thrips, Frankliniella tritici (Fitch), and the soybean thrips, Sericothrips variabilis (Beach). Earlier planted cowpea fields in each area had higher thrips numbers than later planted fields. Tobacco thrips numbers tended to be higher during the early stages of the crop when the plants were small. As plants began to produce blooms, flower thrips numbers increased considerably. Peak flower thrips numbers typically occurred around two weeks after first bloom. Soybean thrips abundance was generally lower than the other common species and had no apparent pattern. Chirothrips crassus Hinds and Chirothrips spiniceps Hood also were found, but were uncommon.

scholarly journals EARLY STAGES OF GRAPTA J-ALBUM

1889 ◽  
Vol 21 (9) ◽  
pp. 164-165
Author(s):  
Shelby. W. Denton
Keyword(s):  
Food Plant ◽  
Early Stages

Since the food plant and early stages of Graptaj-Album appear to be unknown, perhaps the following notes (incompletee as they are owing to my ignorance of the species larvæ I was rearing) may still be of some value of shed a little light on the early stages of this fine butterfly.

scholarly journals On the British Species of Simulium. —II. The Early Stages ; with Corrections and Additions to Part I

1920 ◽  
Vol 11 (3) ◽  
pp. 211-246 ◽  
Author(s):  
F. W. Edwards
Keyword(s):  
Pupal Stage ◽  
Common Species ◽  
Early Stages ◽  
The Common ◽  
To Come

In the introduction to the first part of this paper* it was remarked that very little exact work had been published on the adult European SIMULIDAE. This is equally true of the larvae and pupae ; in fact no one has attempted to describe the early stages of more than two or three of the common species. Moreover, in spite of their great interest, and the ease with which they can be collected and reared, they have apparently been almost entirely ignored by collectors, so that whereas in publishing my previous work I was able to acknowledge valuable assistance from a number of fellow entomologists, the results given in the following pages are, unless otherwise stated, due to my own observations. I wish especially to thank Mr. M. E. Mosely for the early stages of S. subornatum, the last species to come under my notice in the pupal stage. While there are still many important gaps in our knowledge which remain to be filled, it has been thought worth while to state without further delay the results that have been obtained so far.

Early Stages and Biology of Melitaea timandra Coutsis et Oorschot, 2014(Lepidoptera, Nymphalidae) Under the Conditions of Kuh-e-Binalud Mountain (Iran)

Zootaxa ◽  
2020 ◽  
Vol 4729 (4) ◽  
pp. 566-574
Author(s):  
KIRILL A. KOLESNICHENKO ◽  
ANATOLY A. KOTLOBAY
Keyword(s):  
Food Plant ◽  
Natural Conditions ◽  
Early Stages ◽  
Larval Parasitoid ◽  
Development Cycle

This article presents characteristics of the habitats and flying period of Melitaea timandra Coutsis et Oorschot, 2014 and describes the behavior of the adults under natural conditions, their food plant, egg chorion morphology, and caterpillars of the first and senior instars. In addition, a larval parasitoid is identified as Cotesia sp., and the possible development cycle of M. timandra is described. 

The Biology of Erythroneura (Zygina) pallidifrons, Edwards

1932 ◽  
Vol 23 (1) ◽  
pp. 33-43 ◽  
Author(s):  
Elsie I. MacGill
Keyword(s):  
South Africa ◽  
Related Species ◽  
Common Species ◽  
Crop Plants ◽  
Food Plant ◽  
Minor Importance ◽  
Virus Diseases ◽  
The Common

The association between insects and virus diseases of plants and the suspicion which at present rests on Jassidae, amongst others, may result in members of this family becoming of increased importance as potential vectors of virus diseases of crop plants. In America leaf-hoppers are already serious pests of cereals and of grape-vines, and in the cotton-growing area of Central and South Africa a Jassid forms one of the most important obstacles to the successful cultivation of this crop, so that in these countries a considerable amount of attention has been demanded by this group of insects. In this country, however, the leaf-hoppers have only been regarded as of minor importance, though in recent years increasing interest has been taken in certain species infesting potatoes and glasshouse crops. It was suggested to the writer that further knowledge of the biology of these insects was desirable, especially in view of the extreme importance of a nearly related species in many of the African cotton-growing areas, and it was accordingly decided to use the common species infesting glass-houses as a type for investigation with cotton as the food-plant.

Food plant selection by stick insects (Phasmida) in a Bornean rain forest

2005 ◽  
Vol 22 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Nico Blüthgen ◽  
Anika Metzner ◽  
Daniel Ruf
Keyword(s):  
Plant Species ◽  
Rain Forest ◽  
Common Species ◽  
Food Plant ◽  
Food Plants ◽  
Lowland Rain Forest ◽  
Feeding Experiments ◽  
Stick Insects ◽  
Plant Families ◽  
Tropical Lowland Rain Forest

Stick insects (Phasmida) are important herbivores in tropical ecosystems, but have been poorly investigated in their natural environment. We studied phasmids and their food plants in a tropical lowland rain forest in Borneo (Danum Valley, Sabah, Malaysia). Thirty species of phasmid were collected from 49 plant species during nocturnal surveys in the forest understorey. In most cases (35 plant species), experiments confirmed that these phasmids fed on those plant species from which they were collected. Partitioning of phasmid species among food plant species was highly significant. Two common species had a largely restricted diet: Asceles margaritatus occurred mainly on Mallotus spp. (Euphorbiaceae) and Dinophasma ruficornis on Leea indica (Leeaceae). Other phasmids fed on a broad spectrum of plant families and can be considered polyphagous (e.g. Haaniella echinata, Lonchodes hosei herberti). Feeding experiments were performed on captive phasmids using leaves from eight plant species. Asceles margaritatus showed a significantly higher consumption rate for Mallotus miquelianus leaves than for other plants, while H. echinata showed the opposite trend and the lowest consumption for M. miquelianus. However, A. margaritatus readily accepted foliage from several plant families, particularly when Mallotus was not offered at the same time. Therefore, studies on host specialisation by herbivores need to include their distribution in the natural vegetation.

Spherulitic crystal growth in the prodissoconch larval of Crassostrea virginica

1983 ◽  
Vol 41 ◽  
pp. 518-519
Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee
Keyword(s):  
Crystal Structure ◽  
Crassostrea Virginica ◽  
Crystal Orientation ◽  
Developmental Changes ◽  
Gastrula Stage ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Stages Of Growth ◽  
Early Stages ◽  
Initial Deposition

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.

Formation of Dislocation Channels in Neutron Irradiated Molybdenum

1972 ◽  
Vol 30 ◽  
pp. 672-673
Author(s):  
S. Mahajan
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ambient Temperature ◽  
Room Temperature ◽  
Channel Formation ◽  
Early Stages ◽  
Transmission Electron ◽  
Three Stages ◽  
Two Stages ◽  
Polycrystalline Molybdenum

The evolution of dislocation channels in irradiated metals during deformation can be envisaged to occur in three stages: (i) formation of embryonic cluster free regions, (ii) growth of these regions into microscopically observable channels and (iii) termination of their growth due to the accumulation of dislocation damage. The first two stages are particularly intriguing, and we have attempted to follow the early stages of channel formation in polycrystalline molybdenum, irradiated to 5×1019 n. cm−2 (E > 1 Mev) at the reactor ambient temperature (∼ 60°C), using transmission electron microscopy. The irradiated samples were strained, at room temperature, up to the macroscopic yield point.Figure 1 illustrates the early stages of channel formation. The observations suggest that the cluster free regions, such as A, B and C, form in isolated packets, which could subsequently link-up to evolve a channel.

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