TEMPERATURE REQUIREMENTS FOR DEVELOPMENT AND OVIPOSITION OF PERIDROMA SAUCIA (LEPIDOPTERA: NOCTUIDAE)

1981 ◽  
Vol 113 (10) ◽  
pp. 891-897 ◽  
Author(s):  
D. E. Simonet ◽  
S. L. Clement ◽  
W. L. Rubink ◽  
Roy W. Rings
Keyword(s):  
Light Trap ◽  
Laboratory Data ◽  
Effect Of Temperature ◽  
Peridroma Saucia ◽  
Developmental Thresholds ◽  
Temperature Requirements ◽  
Variegated Cutworm ◽  
Trap Catches ◽  
Lepidoptera Noctuidae ◽  
Development Threshold

AbstractStudies were conducted under controlled laboratory conditions to determine the effect of temperature on development and oviposition of the variegated cutworm, Peridroma saucia (Hübner). Developmental thresholds and Celsius degree days necessary for completion of a given stage are: egg (threshold 5.6°C) = 89 DD; larvae (threshold 6.2°C) = 387 DD; pupa (threshold 8.5°C) = 210 DD; and total development (threshold 7.2°C) = 676 DD. The threshold for oviposition was 3.5°C with 128 DD necessary for oviposition to occur.Light trap catches of variegated cutworm moths from 1965 to 1979 were plotted as a function of accumulated heat units based on laboratory data. For the 15-year period, peaks of activity occur at 500 and 1200 DD based on 7.2°C threshold. The data generated in this study would be utilized best in an alert network for determining when scouting should occur, based on peak capture of variegated cutworm moths.

CUTWORMS OF TOBACCO IN NOVA SCOTIA: I. SPECIES COMPLEX AND INFESTATION

1972 ◽  
Vol 104 (12) ◽  
pp. 1855-1864 ◽  
Author(s):  
H. B. Specht
Keyword(s):  
Nova Scotia ◽  
Tobacco Plant ◽  
Light Trap ◽  
Trap Crop ◽  
Peridroma Saucia ◽  
Black Cutworm ◽  
Variegated Cutworm ◽  
Euxoa Messoria ◽  
Trap Catches ◽  
Field Plots

AbstractThe principal injurious species to commercially-grown flue-cured tobacco in Nova Scotia was the dark-sided cutworm, Euxoa messoria Harr. A trace of the black cutworm, Agrotis ipsilon Hufn., was found in one field. The variegated cutworm, Peridroma saucia Hbn., caused minor damage in September. Other species reared from field-collected larvae, and bait and light trap catches, included: yellow-headed cutworm, Apamea amputatrix Fitch; armyworm, Pseudaletia unipuncta Haw.; Amphipyra tragopoginis L.; W-marked cutworm, Spaelotis clandestina Harr.; and the glassy cutworm, Crymodes devastator Brace.Cutworm larvae damaged young tobacco plants during June through mid-July. The largest infestation encountered during 1971, near the margin of a field, killed 5% and injured 20% of the young plants. Infestations in other fields injured 1 to 3% of the plants, with higher incidences near the borders. A seasonal total of 0.024 cutworm larva injured 0.24 tobacco plant/m2 and destroyed 5 to 10% of the injured plants in experimental tobacco field plots planted in a 4-year-old rye field.Tobacco trap crop m2 microplots in a rye field attracted 20 to 50 times as many cutworm larvae and had 25 to 40 more plants injured than comparable areas of an adjoining tobacco field. The largest microplot infestation in six fields tested was 1.8 larvae injuring 7.4 plants. The average microplot infestation of 0.5 larva injured 5.6 plants.

Variegated Cutworm, Peridroma saucia (Hübner) (Lepidoptera: Noctuidae)

2008 ◽  
pp. 4038-4041
Author(s):  
John B. Heppner ◽  
John B. Heppner ◽  
John L. Capinera ◽  
Jamie Ellis ◽  
Andrey N. Alekseev ◽  
...  
Keyword(s):  
Peridroma Saucia ◽  
Variegated Cutworm ◽  
Lepidoptera Noctuidae

CUTWORMS (LEPIDOPTERA: NOCTUIDAE) OF TOBACCO IN NOVA SCOTIA: II. FALL RYE AND WINTER FALLOW EFFECTS ON A FIELD POPULATION

1974 ◽  
Vol 106 (1) ◽  
pp. 73-77
Author(s):  
H. B. Specht
Keyword(s):  
Nova Scotia ◽  
Winter Rye ◽  
Tobacco Plants ◽  
Peridroma Saucia ◽  
Cultural Methods ◽  
Variegated Cutworm ◽  
Euxoa Messoria ◽  
Field Plots ◽  
Lepidoptera Noctuidae ◽  
Winter Fallow

AbstractTwice as many larvae of the dark-sided cutworm, Euxoa messoria Harr., were found in rye fall-seeded tobacco field plots than in winter-fallowed tobacco field plots. There were corresponding differences in numbers of injured tobacco plants. Cutworm aggregations were more prominent in the winter rye than in the winter fallowed area of the tobacco field with low populations of dark-sided cutworms.Larvae of the variegated cutworm, Peridroma saucia Hbn., appeared 2 to 4 weeks later than dark-sided cutworm larvae and winter cultural methods had little effect on their numbers.

Sex pheromone composition of the variegated cutworm, Peridroma saucia (Lepidoptera: Noctuidae), in Korea

2009 ◽  
Vol 12 (2) ◽  
pp. 71-77 ◽  
Author(s):  
Kyung San Choi ◽  
Jum Rae Cho ◽  
Jeong Heub Song ◽  
Dong-Soon Kim ◽  
Kyung Saeng Boo
Keyword(s):  
Sex Pheromone ◽  
Peridroma Saucia ◽  
Pheromone Composition ◽  
Variegated Cutworm ◽  
Lepidoptera Noctuidae

Light-trap catches of African armyworm moths, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae), in relation to rain and wind

1983 ◽  
Vol 73 (2) ◽  
pp. 315-319 ◽  
Author(s):  
M. R. Tucker
Keyword(s):  
East Africa ◽  
Light Trap ◽  
Spodoptera Exempta ◽  
Trap Catch ◽  
Early Season ◽  
African Armyworm ◽  
Light Wind ◽  
Trap Catches ◽  
Lepidoptera Noctuidae ◽  
Very High

AbstractThe association between weather and light-trap catches of Spodoptera exempta (Wlk.) was examined for four traps in East Africa, using whole–night catches and several years' data. Large increases in trap catch were found to be (1) significantly associated with rain at all four traps for the period December–March, but not for later in the season; (2) significantly associated with light wind periods at Muguga for December–May, but not later in the year, and not at Nakuru, due to the very high overall frequency of light winds there; and (3) not significantly associated with windshifts at either Muguga or Nakuru. These results suggest that high densities of flying moths, which may give rise to caterpillar outbreaks early in the year, often occur where the rather infrequent early–season rains fall.

The incidence and distribution of the armyworms Mythimna convecta (walker) and Persectania spp. (Lepidoptera: Noctuidae) and their parasitoids in major agricultural districts of Victoria, south-eastern australia

1986 ◽  
Vol 76 (2) ◽  
pp. 199-210 ◽  
Author(s):  
G. McDonald ◽  
A. M. Smith
Keyword(s):  
Light Trapping ◽  
Light Trap ◽  
Field Studies ◽  
Abundant Species ◽  
Crop Damage ◽  
Eastern Australia ◽  
Two Generations ◽  
Regular Sampling ◽  
Trap Catches ◽  
Lepidoptera Noctuidae

AbstractField studies of Mythimna convecta (Walker), Persectania ewingii (Westwood) and P. dyscrita Common, and their associated parasitoids, were conducted in cereals and pastures in Victoria, Australia, in 1980–83. The study included a survey of the armyworm fauna in the major agricultural districts, detailed phenological studies within five oat crops, and ultraviolet-light trapping of adults. M. convecta was the most abundant species in cereals and was found more commonly in the warmer months of spring and summer in all districts. Larval development in oat crops during spring was preceded by little moth activity in light traps. P. ewingii was common in the southern districts and in the cooler months from May to September. It was the most prevalent armyworm species in pastures and rarely occurred in barley. P. dyscrita was the least abundant species and occurred mostly in the drier inland areas, particularly in the west. Light-trap catches of P. ewingii and P. dyscrita suggested there were two generations, one in spring and one in the autumn. Regular sampling in oat crops showed that M. convecta developed faster and was usually more abundant than P. ewingii during seed development and ripening, and hence had the potential to inflict more crop damage. Of the 17 species of parasitoids reared from field-collected larvae, the wasp Campoletis sp. was the most abundant. In 1980–82, average parasitism ranged from 13 to 16% but fell to 2% after the drought of 1982.

Some effects of weather and moonlight on light-trap catches of the army-worm, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae), at Muguga, Kenya

1978 ◽  
Vol 68 (4) ◽  
pp. 533-542 ◽  
Author(s):  
R. J. Douthwaite
Keyword(s):  
Wind Speed ◽  
Wind Direction ◽  
Geometric Mean ◽  
Light Trap ◽  
Spodoptera Exempta ◽  
Wind Speeds ◽  
Large Numbers ◽  
Trap Catches ◽  
The Relationship ◽  
Lepidoptera Noctuidae

AbstractThe effects of wind speed, wind direction, strong moonlight and rainfall on hourly light-trap catches of adult Spodoptera exempta (Wlk.) made at Muguga, Kenya, between January and June in 1970 and 1971 were investigated. The highest catches occurred in winds of 2–3 m/s, but generally, fewer moths were caught as wind speed increased. In totally dark hours the geometric mean catch at wind speeds of 5–6 m/s was about one-tenth that at 0–1 m/s. The relationship between catch and wind speed changed between January and June. Wind direction and change in direction were not significantly related to catch. The geometric means of catches made in strong moonlight were about one-tenth those in total darkness at comparable wind speeds. Rainfall was associated with higher catches in seven out of eight months, but the differences were significant in only two months. Recognition of the association between light winds and large numbers of S. exempta should assist forecasting, but a fuller understanding of the relationship between light-trap catch and population requires a method of population assessment that is independent of the effects of weather and moonlight.

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