The European red mite and its control

Abstract

Relative Importance of the Different Enemies Seius mites and Stethorus ladybeetles are probably the most important of the enemies mentioned. Under favorable conditions both apparently are able to check infestations. Thrips are next in importance, with probably Orius (Triphleps) a close fourth.

The bionomics ofScolothrips sexmaculatus(Pergande) (Thysanoptera: Thripidae), an insect predator of spider mites

“…Scolothrips sexmaculatus has long been recognized as a specialized preda tor of spider mites (Fleschner, 1958;Garman, 1924;Garman and Townsend, 1938;Hood and Herrick, 1926;Lamiman, 1935;Leigh, 1963;Lincoln et al, 1953;Lord, 1949;McGregor, 1914;Mc Gregor and McDunough, 1917;McMurtry and Johnson, 1966;Michelbacher, 1959;Michel bacher et al, 1952;Mori, 1967;Muma, 1955 and1958;Newcomer and Yothers, 1929;Oatman, 1970;Oatman and Mc Murtry, 1966;Oatman et al, 1967;Per gande, 1882;Quayle, 1912;van den Bosch and Hagen, 1966;Watson, 1918 and1923;and Whitcomb and Bell, 1964). Based on his studies which re vealed that S. sexmaculatus had a low fecundity and low food requirements, Bailey (1939) considered it unlikely that this predator was responsible for controlling, or noticeably reducing, spi der mite infestations.…”

Ecology of tetranychid mites and their natural enemies: A review: III. Biology, ecology, and pest status, and host-plant relations of tetranychids

“…Differences in population increases of mites on different biotypes or varieties have been demonstrated in various studies. Examples include cotton and related plants, with some biotypes show ing a high degree of resistance (Abul-Nasr, 1960;Leigh and Hyer, 1963)citrus (Fleschner, 19586), orange fruits (Huffaker, 1958;Huffaker, Shea, and Herman, 1963), geranium (Snetsinger, Balderston, and Craig, 1966), grape (Flaherty, 1967), bean (Fritzsche, 1957(Fritzsche, , 1961(Fritzsche, , 1962aFritsche, Wolfgang, and Opel, 1957;Watson, 1964), deciduous fruit trees (Garman and Townsend, 1938;Kuenen, 1949;Nielsen, 1958;Downing and Moilliet, 1967), tea (Osakabe, 1963a(Osakabe, , b, 1967, and tomato (Gil bert, Chinn, and Tanaka, 1966;Stoner and Stringfellow, 1967;Stoner, Frank, and Gentile, 1968;Gentile, Webb, and Stoner, 1969).…”

Effect of cultural measures on the population density of the fruit tree red spider mite,Metatetranychus ulmi Koch (Acari, Tetranychidae)

“…Investigation led to the conclusion that in many cases the cause of the increase in these originally economically unimportant insects and mites could be traced back to a disturbance of the existing balance between the harmful organism and its plant or animal parasites and predators as a result of the poisonous effect of the majority of the pesticides on these beneficial organisms (CLAUSEN, 1956;CUTRIGHT, 1944;DEBACH, 1946DEBACH, , 1947DEBACH & BART-LETT, 1951;DEBACH et al, 1949;FISHER, 1950FISHER, , 1951FLESCHNER, 1958a, b;GARMAN & TOWNSEND, 1938;GRIFFITHS, 1951 ;GRIFEITHS & FISHER, 1949, 1950GRIFFITHS & THOMPSON, 1947;MUMA, 1955MUMA, , 1958THOMPSON, 1939). In the apple orchards of Nova Scotia a heavy multiplication of scale insects (Lepidosaphes ulmi L.) was observed after the use of sulphur to control apple scab (Venturia inaequalis (Cke) Wint.…”