Desert Locust

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Desert Locust

 

(Schistocerca gregaria), a gregarious insect of the superfamily Acridoidea; a harmful polyphagous pest. The body is 46-61 mm long; the elytra have dark spots, and the wings are light with no dark central ligature. Sexually mature individuals are lemon yellow, and those that have just acquired wings are lilac-pink. In the gregarious stage the nymphs are yellow with black spots, and in the solitary stage they are yellowish or greenish. The cylindrical egg pods are 7 to 10 cm long and contain from 30 to 130 yellowish brown eggs.

The desert locust is found in North Africa and in Southwest and South Asia, including India. There are two or three generations of locusts per year. The first generation develops in the southern parts of the above regions in autumn and winter, and soon after acquiring wings migrates to the northern part of its range. At this time (between late April and June), during years of mass reproduction, desert locusts may make incursions into the USSR (southern Middle Asia and Transcaucasia) from Afghanistan or Iran. In the northern parts of its range the desert locust reaches sexual maturity and lays its egg pods in the soil; from these pods hatch the larvae of the second, or spring-summer, generation. The second generation develops in the south, where the desert locust begins a new autumn-winter generation.

The food of the desert locust consists of about 400 species of cultivated and wild plants, including woody plants. An infestation of desert locusts on plantings, meadows, and forests may reach catastrophic proportions. It has been established that the mass reproduction of desert locusts is periodic, occurring about every ten to 12 years. The phenomenon is associated with increasing or decreasing precipitation in the permanent habitat.

Methods of control include poisoned bait and treating the plants with attractants containing insecticides.

REFERENCES

Shcherbinovskii, N. S. Pustynnaia sarancha-shistotserka. Moscow, 1952.
Tsyplenkov, E. P. Vrednye saranchovye nasekomye v SSSR. Moscow, 1970.

E. P. TSYPLENKOV

References in periodicals archive ?
KEYWORDS: Schistocerca gregaria, Locusta migratoria, Calotropis procera, Mortality, Haemogram, Toxicity.
La Schistocerca gregaria logra sobrevolar grandes distancias, asolando los cultivos con una voracidad increible, puede alcanzar una altura de 2.
1997); FABP muscular de la Schistocerca gregaria (codigo PDB: 1FTP), proteina de union a lipidos del adiposito del raton (1ACD), FBP muscular del humano (1HMR), la proteina de union a lipidos del adiocito del raton (1ABO) y una mutante de esta (1ADL).
The effect of wilting on palatability of plants to Schistocerca gregaria, the desert locust.
Orientation of flying locusts, Schistocerca gregaria (Forsk.
The effects of neem oil and azadirachtin on mortality, flight activity, and energy metabolism of Schistocerca gregaria Forskal--a comparison between laboratory and field locusts.
MUNYINYI, 1997-Haemolymph pigment composition as a chemometric indicator of phase in the desert locust, Schistocerca gregaria International Journal of Tropical Insect Science, 17(2): 199-204.
Many of these species have a tendency to aggregation and migration but show rudimentary phase polyphenism, thus the expression of density-dependent polyphenism maybe subtle and not overtly manifested as in model locusts such as Schistocerca gregaria (Forskal) and Locusta migratoria (Linnaeus) (Uvarov 1966, 1977, Jago 1985, Simpson et al.
Chemical constituents of jojoba oil and insecticidal activity against Schistocerca gregaria and biochemical effect on albino rats.
Effect of temperature, humidity and inoculation method on susceptibility of Schistocerca gregaria to Metarhizium flovoride.
Thomas and colleagues used highspeed cameras to capture the details of how wings of the locust Schistocerca gregaria deform as they flap.
Mermithid parasitism, protein turnover and vitellogenesis in the desert locust, Schistocerca gregaria Forskol.