Recognizing the Good Bugs in Cotton - Texas Is Cotton Country ...

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Lysiphlebus testaceipes Family: Braconidae Characteristics: Lysiphlebus testaceipes is a shiny, slender black wasp about the size of a cotton aphid. Wasps can often be seen in aphid colonies as they sting (parasitize) aphids. More commonly, the parasitized aphid mummies are seen, evidence this parasite is active in the field. Aphid mummies are dead swollen aphids stuck to leaves. The mummies are tan to gold and contain a developing wasp or have a hole cut in the top through which the wasp emerged. Hosts: L. testaceipes attacks the cotton aphid in cotton and other aphid pests such as greenbugs in wheat. General Biology: The female pierces (stings) the cotton aphid and deposits an egg inside. The egg hatches in about 2 days and the parasitoid grub feeds internally on the living aphid. The grub is full grown in about a week at which time the aphid takes on a swollen, tan appearance and dies. The parasitized aphid is termed a “mummy” and is attached to the leaf. The grub enters the pupal stage and about 4-5 days later, the adult wasp emerges through a circular hole cut towards the back of the aphid mummy. Development from egg to adult requires about 2 weeks. A single female can parasitize about 100 aphids during her 4- to 5-day life span. 106
L. testaceipes adult J.K. Clark, Univ. CA Aphid mummy showing exit hole cut by emerging adult wasp J.K. Clark, Univ. CA 107
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E-357 7-05 Field Guide to Predators
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CONTENTS Introduction 3 Acknowledgm
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Introduction The role of natural en
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mologists identify and appreciate t
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ed in this book. We have only focus
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a messy task, caterpillars can be p
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thrips. It is a serious pest of see
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cloth, spread the cloth between two
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FURTHER READING The following publi
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ugs (E,L), Leafhopper assassin bug
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European Corn Macrocentrus grandii
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ecolonization by natural enemies on
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important. Chemical Class Cotton In
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erations per year. The green lynx p
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Celer crab spider W. Sterling 27
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Black and white jumping spider W. S
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Green lacewing egg W. Sterling J.K.
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Pupa of the green lacewing Adult gr
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Photo: A93. Brown lacewing adult Un
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W. Sterling Adult ground beetle Adu
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Larva of a ground beetle W. Sterlin
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year. Small groups of adult beetles
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Adult harmonia or Asian lady beetle
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Adult convergent lady beetle Conver
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Lady beetle eggs Pink spotted lady
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Collops balteatus W. Sterling 49
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Adult hooded beetle D. Waters, Univ
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M. Badgley Adult earwig tending egg
Page 57 and 58: Adult rove beetle (note short wing
Page 59 and 60: Damsel bug adult and nymph J.K. Cla
Page 61 and 62: Eggs of the spined soldier bug W. S
Page 63 and 64: Nymph of the spined soldier bug Adu
Page 65 and 66: predators typically sit and wait to
Page 67 and 68: Egg mass of Zelus renardii Leafhopp
Page 69 and 70: Adult bigeyed bug, Geocoris punctip
Page 71 and 72: ground debris. The winter is spent
Page 73 and 74: Long-legged fly J. Ruberson 71
Page 75 and 76: days. Nymphs become adults in 12-20
Page 77 and 78: Eggs of Scymnus on leaf Larva of a
Page 79 and 80: Adult Stethorus lady beetle J.K. Cl
Page 81 and 82: General Biology: Imported fire ants
Page 83 and 84: Adult sixspotted thrips M. Badgley
Page 85 and 86: Predatory mite feeding on two-spott
Page 87 and 88: Adult Archytas marmoratus H. Gross
Page 89 and 90: 10 days later and live for several
Page 91 and 92: Adult Macrocentrus grandii M. Scott
Page 93 and 94: and the wasps overwinter in the soi
Page 95 and 96: worm larva and spins a cocoon in th
Page 97 and 98: Adult Chelonus stinging (parasitizi
Page 99 and 100: about 3 weeks and produce about 160
Page 101 and 102: Hyposoter cocoon near remains of pa
Page 103 and 104: Adult Cotesia marginiventris parasi
Page 105 and 106: studies have shown releasing labora
Page 107: Adult Meteorus parasite J. Ruberson
Page 111 and 112: A looper filled with hundreds of Co
Page 113 and 114: Adult Trissolcus basalis parasitizi
Page 115 and 116: shaped slit in the pupal skin. Nymp
Page 117 and 118: Anaphes iole, a parasite of lygus b
Page 119 and 120: Trichogramma wasp mounted on micros
Page 121 and 122: Bollworm egg parasitized by Trichog
Page 123 and 124: in cotton fields during epizootics.
Page 125 and 126: Bollworm killed by NPV W. Sterling
Page 127 and 128: Caterpillar killed by Beauveria fun
Page 129 and 130: NOTES 127
Page 136: Sources of entomological supplies A
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