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

More documents

Recommendations

Info

86 Tachinid Flies Lespesia archippivora Eucelatoria bryani Characteristics: The large tachinid (about 1/2 inch long) with a silvery-white face is Archytas marmoratus and is discussed in detail on the previous page. Some other important tachinid species belong to the genera Lespesia and Eucelatoria. Lespesia is a small (4-8 mm) gray fly which runs and flies quickly and is found throughout the Cotton Belt. Eucelatoria bryani is an active, grayish black fly about 1/4 inch long with a reddish tinge at the tip of its abdomen and is found from Mississippi west to Arizona. A related species, E. armigera is found in California and Arizona. Hosts: Lespesia archippivora parasitizes many different kinds of caterpillars, including bollworm, fall armyworm, beet armyworm, cabbage looper and black cutworm. E. bryani is a common parasitoid of bollworm, budworm and fall armyworm larvae. General Biology: While some tachinid flies lay their eggs on leaves, the female Eucelatoria alights on a bollworm or budworm larva and using a sharp barb on her abdomen, rips open a hole in the caterpillar’s skin. She then deposits up to 20 maggots into the caterpillar. The maggots feed inside the larva for 4-5 days. Once the bollworm or budworm has completed feeding and tunneled into the soil in preparation for pupating, the maggots emerge from the now dead caterpillar and pupate. The adult flies emerge about
10 days later and live for several weeks. Adults overwinter. Lespesia females land on the caterpillar and deposit their eggs on the caterpillar’s body. The fly eggs hatch in about 20 minutes and the grubs tunnel into the armyworm. The grubs feed internally for 10-16 days, finally causing the death of the armyworm. Mature grubs emerge from the dead host and pupate. Adults flies live for several weeks and produce about 100-200 eggs. An adult tachinid fly Univ. Florida, Entomology Dept. 87
Page 1 and 2:
E-357 7-05 Field Guide to Predators
Page 3 and 4:
CONTENTS Introduction 3 Acknowledgm
Page 5 and 6:
Introduction The role of natural en
Page 7 and 8:
mologists identify and appreciate t
Page 9 and 10:
ed in this book. We have only focus
Page 11 and 12:
a messy task, caterpillars can be p
Page 13 and 14:
thrips. It is a serious pest of see
Page 15 and 16:
cloth, spread the cloth between two
Page 17 and 18:
FURTHER READING The following publi
Page 19 and 20:
ugs (E,L), Leafhopper assassin bug
Page 21 and 22:
European Corn Macrocentrus grandii
Page 23 and 24:
ecolonization by natural enemies on
Page 25 and 26:
important. Chemical Class Cotton In
Page 27 and 28:
erations per year. The green lynx p
Page 29 and 30:
Celer crab spider W. Sterling 27
Page 31 and 32:
Black and white jumping spider W. S
Page 33 and 34:
Green lacewing egg W. Sterling J.K.
Page 35 and 36:
Pupa of the green lacewing Adult gr
Page 37 and 38: Photo: A93. Brown lacewing adult Un
Page 39 and 40: W. Sterling Adult ground beetle Adu
Page 41 and 42: Larva of a ground beetle W. Sterlin
Page 43 and 44: year. Small groups of adult beetles
Page 45 and 46: Adult harmonia or Asian lady beetle
Page 47 and 48: Adult convergent lady beetle Conver
Page 49 and 50: Lady beetle eggs Pink spotted lady
Page 51 and 52: Collops balteatus W. Sterling 49
Page 53 and 54: Adult hooded beetle D. Waters, Univ
Page 55 and 56: 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: Adult Archytas marmoratus H. Gross
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 and 108: Adult Meteorus parasite J. Ruberson
Page 109 and 110: L. testaceipes adult J.K. Clark, Un
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
show all

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

Create successful ePaper yourself

Delete template?

Save as template?