Reactions of Larvae of the Eastern Tent Caterpillar, Malacosoma americanum (F.), and of the Spotless Fall Webworm, Hyphantria textor Harr., to Pentatomid Predators

1950 ◽  
Vol 82 (2) ◽  
pp. 52-52 ◽  
Author(s):  
C. R. Sullivan ◽  
G. W. Green
Keyword(s):  
Field Studies ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Fall Webworm ◽  
Tent Caterpillar

During recent field studies of the behaviour and activiw of larvae in colonies of M. americanum and H. textor, it was noticed that nymphs and adults of Podisus placidus (Uhler) and of P. modestus (Dallas) frequently visited colonies of the eastern tent caterpillar and occasionally those of the spotless fall webworm. Although small larvae, particularly those of the tent caterpillar, fell prey to both nymphs and adults, larvae of the fifth and sixth instars occasionally exhibited special reactions.

Identification and behavioral assays of the trail pheromone of the forest tent caterpillar, Malacosoma disstria Hübner (Lepidoptera: Lasiocampidae)

1993 ◽  
Vol 71 (8) ◽  
pp. 1511-1515 ◽  
Author(s):  
T. D. Fitzgerald ◽  
F. X. Webster
Keyword(s):  
Trail Pheromone ◽  
Malacosoma Disstria ◽  
Forest Tent Caterpillar ◽  
Laboratory Studies ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Highly Sensitive ◽  
True Threshold ◽  
Behavioral Assays ◽  
Tent Caterpillar

Behavioral assays show that the steroid 5β-cholestan-3-one, isolated from the abdomen of the larva of the forest tent caterpillar (Malacosoma disstria), constitutes the chemical basis of trail following in this insect. Caterpillars follow artificial trails prepared from solvent dilutions of the compound at rates as low as 10−11 g∙mm−11 of trail, though the true threshold sensitivity is likely to be one or two orders of magnitude lower than this. Fourth-instar caterpillars store an average of 58 ng of the pheromone. Field and laboratory studies indicate that the compound is fully competitive with their authentic trails. The caterpillars are highly sensitive to differences in the concentration of the pheromone, preferring stronger trails to weaker trails. The caterpillars also respond to 5β-cholestane-3,24-dione, a chemical not found in M. disstria but known to be a component of the trail pheromone of the eastern tent caterpillar, Malacosoma americanum.

Nutrient content of four rosaceous hosts and their effects on development and fecundity of the eastern tent caterpillar, Malacosoma americanum (Fab.) (Lepidoptera: Lasiocampidae)

1983 ◽  
Vol 61 (12) ◽  
pp. 2868-2872 ◽  
Author(s):  
A. Segarra-Carmona ◽  
P. Barbosa
Keyword(s):  
Fatty Acids ◽  
Water Content ◽  
Development Time ◽  
Direct Relationship ◽  
Nutrient Content ◽  
Pupal Weight ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Developmental Parameters ◽  
Tent Caterpillar

Eastern tent caterpillar, Malacosoma americanum (Fab.), larvae reared on four rosaceous hosts differed in development time and survival under laboratory conditions. Fecundity and pupal weight were also affected by diet. Levels of nitrogen, carbohydrates, and fatty acids in host foliage as well as water content and caloric values were determined. No direct relationship was found between nutrient or caloric levels and developmental parameters.

Daily foraging schedule of field colonies of the eastern tent caterpillar Malacosoma americanum

Oecologia ◽  
1988 ◽  
Vol 76 (4) ◽  
pp. 574-578 ◽  
Author(s):  
T. D. Fitzgerald ◽  
Tim Casey ◽  
Barbara Joos
Keyword(s):  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Tent Caterpillar

Thermal properties of the tent of early instar colonies of the eastern tent caterpillar, Malacosoma americanum (Lepidoptera: Lasiocampidae)

2012 ◽  
Vol 37 (8) ◽  
pp. 615-624 ◽  
Author(s):  
Terrence D. Fitzgerald ◽  
Steven Miller ◽  
Michael Smith
Keyword(s):  
Thermal Properties ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Early Instar ◽  
Tent Caterpillar

Elective recruitment by the eastern tent caterpillar (Malacosoma americanum)

1983 ◽  
Vol 31 (2) ◽  
pp. 417-423 ◽  
Author(s):  
T.D. Fitzgerald ◽  
S.C. Peterson
Keyword(s):  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Tent Caterpillar

AN ANALYSIS OF DAILY FORAGING PATTERNS OF LABORATORY COLONIES OF THE EASTERN TENT CATERPILLAR, MALACOSOMA AMERICANUM (LEPIDOPTERA: LASIOCAMPIDAE), RECORDED PHOTOELECTRONICALLY

1980 ◽  
Vol 112 (7) ◽  
pp. 731-738 ◽  
Author(s):  
T. D. Fitzgerald
Keyword(s):  
Foraging Strategy ◽  
Early Morning ◽  
Activity Period ◽  
Malacosoma Americanum ◽  
Foraging Patterns ◽  
Common Component ◽  
Eastern Tent Caterpillar ◽  
Temporal Placement ◽  
Laboratory Colonies ◽  
Tent Caterpillar

AbstractDaily periods of activity of eight colonies of the eastern tent caterpillar, Malacosoma americanum (F.), were monitored photoelectronically under a simulated springtime photoperiod in the laboratory. Colonies averaged 3.7 ± 0.1 (S.E.) activity periods per day (N = 103 colony-days), separated by an average interval of 6.6 ± 0.1 h (N = 389). Foraging trips lasted an average 2.8 ± 0.1 h (N = 397). A plot of 336 activity period midpoints (seven colonies) showed all colony activity peaks to occur between 0600 and 0800 h, 1100 and 1600 h, 1900 and 2100 h, and 0100 and 0400 h. The first three peaks correspond well to previously reported field observations but the early morning foraging trip, which occurred in darkness, was previously unreported by field investigators. The temporal placement of activity peaks shifted from day to day within colonies but the occurrence of evening foraging trips was the most consistent. Dark onset appeared to trigger foraging in resting colonies. Recruitment of hungry caterpillars to food finds appears to be a common component of the foraging strategy of this species.

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