THE LIFE-HISTORY OF SCHISTOCERCA LINEATA SCUD

1932 ◽  
Vol 64 (5) ◽  
pp. 98-102 ◽  
Author(s):  
Norman Criddle
Keyword(s):  
Life History ◽  
South America ◽  
Schistocerca Gregaria ◽  
Desert Locust ◽  
Old World ◽  
History Of ◽  
First Time ◽  
Better Than ◽  
Prairie Provinces

The lined grasshopper, Schistocerca lineata Scud., is the only one of the genus met with in the Prairie Provinces, although it has as relations, several famous locusts of the Old World and South America including the desert locust, Schistocerca gregaria Forst., and S. paranensis Burm. Indeed there is something in the flight and other actions of this insect which separates it from its associates as an aristocrat and most of us seeing it for the first time would readily proclaim “This is a locust”. Despite its aristocratic ancestry, however, the lined grasshopper is little better than a hermit, and in Canada it is restricted in distribution to the southern slopes of a few hot coulies in Alberta.

scholarly journals Life History of Oxybelus variegatus Wesmael, 1852 (Hymenoptera: Crabronidae) with a Description of the Mature Larva

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 100
Author(s):  
Piotr Olszewski ◽  
Petr Bogusch ◽  
Krzysztof Szpila
Keyword(s):  
Life History ◽  
Mature Larva ◽  
Digger Wasp ◽  
Comprehensive Information ◽  
History Of ◽  
First Time ◽  
Delia Platura

The first comprehensive information on the bionomics of the digger wasp Oxybelus variegatus Wesmael, 1852 is presented. Females nested in small aggregations in crevices between paving stones of a frequently used pedestrian pathway in lowland agricultural wasteland. Nests were dug in the ground using mandibles, legs and abdomen. The nest consists of a main burrow with one or, rarely, two cells. The mature larva is described for the first time. The egg stage lasts for about two days before the larva hatches. The female provisioned each cell with an average of 11 paralysed male flies of Delia platura (Meigen, 1826) (Diptera: Anthomyiidae). Numerous females of dipteran kleptoparasites were observed in the nesting area of O. variegatus. However, only a few nests were infested by larvae of Senotainia conica (Fallen, 1810).

Description of the pupa and observations on the distribution, ecology, and life history of Quedius spelaeus spelaeus Horn (Coleoptera: Staphylinidae) in Nova Scotia, Canada

Zootaxa ◽  
2006 ◽  
Vol 1226 (1) ◽  
pp. 61 ◽  
Author(s):  
MAX MOSELEY ◽  
JAN KLIMASZEWSKI ◽  
CHRISTOPHER G. MAJKA
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Glacial Refugia ◽  
Disjunct Distribution ◽  
Late Instar ◽  
History Of ◽  
First Time

The troglophilic staphylinid beetle Quedius spelaeus spelaeus Horn 1871, has been found in a number of porcupine dung caves in Nova Scotia where it appears to be the dominant predator on other invertebrates. In culture, late-instar larvae were observed to excavate and remain in cavities excavated in dung, and to pupate in these cavities. The pupa is described for the first time and compared with other pupae in the genus Quedius Stephens. The apparently disjunct distribution of the species in Nova Scotia is discussed and it is suggested that it may have colonized the province from Atlantic glacial refugia.

STUDIES ON STRONGYLOIDES OF PRIMATES: V. SYNONYMY OF THE SPECIES IN MONKEYS AND APES

1959 ◽  
Vol 37 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Premvati
Keyword(s):  
Life History ◽  
Environmental Conditions ◽  
New World ◽  
Comparative Morphology ◽  
New World Primates ◽  
Free Living ◽  
Old World ◽  
History Of

A study of the comparative morphology and life history of S. fülleborni, S. cebus, and S. simiae in both the parasitic and free-living generations under different environmental conditions, and their comparison with the free-living stages from faeces of Old World and New World primates has led to the conclusion that the three species should be synonymized into one, for which the name Strongyloides fülleborni von Linstow (1905) has priority.

scholarly journals Breastfeeding during adolescence: life history of first-time mothers

2014 ◽  
Vol 6 (1) ◽  
pp. 414-424
Author(s):  
Thelma Spindola ◽  
Adriana Oliveira ◽  
Renata Cavalcanti ◽  
Vinícius Fonte
Keyword(s):  
Life History ◽  
First Time Mothers ◽  
History Of ◽  
First Time

On the Life History of Anthomyia procellaris Rond. and A. pluvialis L. inhabiting the Nests of Birds

Parasitology ◽  
1924 ◽  
Vol 16 (2) ◽  
pp. 150-159 ◽  
Author(s):  
D. Keilin
Keyword(s):  
Life History ◽  
Old World ◽  
Black Spots ◽  
History Of

Anthomyia pluvialis Linn. (1761) is a very common and beautiful fly, widely distributed in the old world, and easily recognisable by having characteristic black spots on the thorax and abdomen.

New Agrilus Curtis (Coleoptera: Buprestidae) from México and Costa Rica mimicking parasitic wasps

Zootaxa ◽  
2010 ◽  
Vol 2545 (1) ◽  
pp. 39 ◽  
Author(s):  
HENRY A. HESPENHEIDE
Keyword(s):  
New Species ◽  
Costa Rica ◽  
South America ◽  
Parasitic Wasps ◽  
Old World ◽  
The Family ◽  
First Time ◽  
Wood Boring

Three species of the genus Agrilus are described: A. bellamyi New Species from México, and A. braconoides New Species and A. lucindae New Species from Costa Rica. The male of Agrilus braconicoloratus Hespenheide from México is also described for the first time. These four species are hypothesized to be mimics of wasps in the family Braconidae, some of which are parasitic on wood-boring beetles. The mimicry complex is briefly described and discussed for Costa Rica and Panamá and probably involves both Mullerian and Batesian relationships with other beetles (Cerambycidae, Cleridae, and baridine Curculionidae) and Hymenoptera (Ichneumonidae and Mutillidae), predatory Heteroptera (Reduviidae), Diptera (Tipulidae), and other taxa. Examples are also given for South America and the Old World.

Researches on the Intestinal Protozoa of Monkeys and Man. I. General Introduction, and II. Description of the whole Life-History of Entamoeba histolytica in Cultures

Parasitology ◽  
1928 ◽  
Vol 20 (4) ◽  
pp. 357-412 ◽  
Author(s):  
Clifford Dobell
Keyword(s):  
Life History ◽  
Entamoeba Histolytica ◽  
Continuous Cultivation ◽  
Intestinal Protozoa ◽  
Natural Hosts ◽  
History Of ◽  
New Generation ◽  
First Time ◽  
At Will

A pure strain of Entamoeba histolytica has been isolated and cultivated, and an attempt has been made to study and describe its whole life-history in detail.This strain (K. 28 c) was derived from the dysenteric dejecta of a kitten experimentally infected per os by means of typical cysts from the faeces of a monkey (Macacus sinicus). It has now been under continuous cultivation for about 20 months (220 serial subcultures), and its development in vitro has been uniform throughout.Methods have been devised, and are here described, whereby any desired stage in the life-history of this strain—amoebae, cysts, and all intermediate stages (including encystation and excystation)—can be readily procured in vitro at will.Detailed study has shown that the trophic amoebae multiply in cultures by simple binary fission only, as they do in their natural hosts. Their mode of division is briefly described.Encystation also occurs in vitro just as it does in the bowel, with formation of characteristic precystic amoebae and the final production of typical quadrinucleate cysts.Excystation has been carefully studied, and it has been found that a single quadrinucleate, amoeba escapes from each cyst through a minute perforation in its wall. An account is given of this remarkable process, which has not been described previously.The 4-nucleate excysted (metacystic) amoeba has been found to produce a new generation of trophic forms by a complicated series of nuclear and cytoplasmic divisions, which are described in detail for the first time. The final result of this subdivision is the production of eight uninucleate amoebulae by each quadrinucleate amoeba hatched from a cyst.These amoebulae are young trophic amoebae, and not gametes or conjugants. No sexual phenomena of any sort have been observed during the metacystic itages: and the life-history of E. histolytica, as visible in vitro, is thus wholly sexual.A development similar to that here described in the case of Strain K. 28 c has been found to occur in many other cultivated strains of E. histolytica— including a strain isolated directly from man, and a human strain experiaentally implanted in a monkey (M. sinicus) and recovered therefrom in pure culture. There are therefore good reasons for concluding that the development were described is not abnormal, and that it is probably closely parallel to that which occurs naturally inside man.

scholarly journals Life-History of the Desert Locust

Nature ◽  
1956 ◽  
Vol 178 (4547) ◽  
pp. 1379-1379
Keyword(s):  
Life History ◽  
Desert Locust ◽  
History Of
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