Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-15T22:10:30.570Z Has data issue: false hasContentIssue false
  • English
  • Français

PHENOLOGY OF HOPLOCAMPA MONTANICOLA ROHWER (TENTHREDINIDAE) AND ANTHONOMUS QUADRIGIBBUS SAY (CURCULIONIDAE) ON THEIR HOST PLANT AMELANCHIER ALNIFOLIA NUTT. (ROSACEAE) IN SASKATCHEWAN

Published online by Cambridge University Press:  31 May 2012

R.G. St. Pierre  and
D.M. Lehmkuhl
R.G. St. Pierre
Affiliation:
Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0
D.M. Lehmkuhl
Affiliation:
Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0
Get access Rights & Permissions [Opens in a new window]

Abstract

Adult Hoplocampa montanicola Rohwer emerged in mid-May, 6.2 ± 3.2 days (mean ± SE) prior to the period of peak anthesis in Amelanchier alnifolia Nuttall. Oviposition, one egg per flower, occurred during the period of petal drop in late-May; a mean ± SE of 2.2 ± 0.2 eggs were deposited in each inflorescence. Eggs hatched 7.7 ± 3 days (mean ± SE) after the period of primary petal drop and larvae fed on a mean ± SE of 1.8 ± 0.14 fruit per infructescence. Larvae completed development by the end of June, just as the first fruit of A. alnifolia were beginning to ripen. Larvae overwintered in the leaf litter.

Adult Anthonomus quadrigibbus Say (previously assigned to the genus Tachypterellus) were first collected in mid- to late-May during the periods of anthesis and fruit drop in A. alnifolia. Immature fruit fed upon were often extensively damaged. Oviposition occurred toward the end of fruit drop in A. alnifolia, 30.6 ± 2.5 days (mean ± SE) after the period of peak anthesis. Only one egg was laid in a puncture at the base of a fruit. Larval feeding was restricted to ovules and occurred in fruit retained on the plant. Pupation and adult emergence occurred in mid-July as fruit were ripening. The new generation of adults then entered the leaf litter to overwinter.

Résumé

Les adultes d’Hoplocampa montanicola Rowher se sont écloses à la mi-mai, 6,2 ± 3,2 jours (moyenne ± erreur-type) avant la période d’anthèse d’apogée d’Amelanchier alnifolia Nuttall. La ponte, un oeuf par fleur, a eu lieu pendant la période de perte de pétales vers la fin mai; en moyenne (± erreur-type), 2,2 ± 0,2 oeufs ont été laissés dans chaque inflorescence. Les oeufs se sont éclos 7,7 ± 3 jours (moyenne ± erreur-type) suivant la période de perte de pétales primaires et les larves se sont nourries en moyenne ± erreur-type 1,8 ± 0,14 fruits par infructescence. Les larves ont terminé leur développement par la fin juin, au moment quand les fruits premiers d’A. alnifolia ont commencé à mûrir. Les larves ont hivernées dans la litière de feuilles.

Les adultes d’Anthonomus quadrigibbus Say (attribué auparavant au genre Tachypterellus) ont été prise premièrement pendant la mi- à la fin mai, pendant les périodes d’anthèse et perte de fruits d’A. alnifolia. Les fruits non mûris qui ont été mangés, ont fréquemment été considérablement endommagés. La ponte a eu lieu vers la fin de la perte de fruits d’A. alnifolia, 30,6 ± 2,5 jours (moyenne ± erreur-type) après la période d’anthèse d’apogée. Un oeuf seul a été déposé dans une piqûre à la base d’un fruit. L’alimentation larvaire a été restreinte aux ovules et a eu lieu à la mi-juillet au moment quand mûrissaient les fruits. La génération nouvelle d’adultes s’est alors entrée dans la litière de feuilles pour hiverner.

Type
Articles
Information
The Canadian Entomologist , Volume 122 , Issue 5 , October 1990 , pp. 901 - 906
Copyright
Copyright © Entomological Society of Canada 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bird, R.D. 1927. The external anatomy of the larva of Hoplocampa halcyon Nort. with a key to the instars and to those of related species (Tenthredinidae, Hymenoptera). Ann. ent. Soc. Am. 20: 481–487.CrossRefGoogle Scholar
Blatchley, W.S., and Leng, C.W.. 1916. Rhynchophora or Weevils of North Eastern America. The Nature Publishing Co., Indianapolis.Google Scholar
Buckell, E.R. 1930. The apple curculio as a pear pest in British Columbia. Can. Ent. 62(3): 47–49.Google Scholar
Burke, H.R., and Anderson, R.S.. 1989. Systematics of species of Anthonomus Germar previously assigned to Tachypterellus Fall and Cockerell (Coleoptera: Curculionidae). Ann. ent. Soc. Am. 82(4): 426–437.Google Scholar
Crandall, C.S. 1905. The curculio and the apple. Ill. Agric. Exp. Sta. Bull. 98: 467–560.Google Scholar
Drouin, J.A., and Kusch, D.S.. 1978. Chemical control of a seed-boring sawfly and a midge damaging chokecherry in Alberta. Environ. Can. Forestry Serv. Bimonthly Res. Notes 34(6): 37.Google Scholar
Drouin, J.A., and Kusch, D.S.. 1980. Pesticide field trials on shade and shelterbelt trees in Alberta, 1979. Environ. Can. Forestry Serv. Inf. Rep. NOR-X-227: 7–8.Google Scholar
Fulton, B.B. 1928. The apple curculio and its control by hogs. J. Agric. Res. 36(2): 249–261.Google Scholar
Hammer, O.H. 1932. Studies on control of the apple curculio in the Champlain Valley. J. econ. Ent. 25: 569–575.CrossRefGoogle Scholar
Krombein, K.V., Muesebeck, C.F.W., and Townes, K.K.. 1979. Catalog of Hymenoptera in America North of Mexico. Smithsonian Institution Press, Washington.Google Scholar
List, G.M. 1932. A cherry pest in Colorado. Bull. Colo. Agric. Exp. Stn. 385. 106 pp.Google Scholar
Owens, E.D., and Prokopy, R.J.. 1977. Host finding and trapping of European apple sawfly, Hoplocampa testudinea (Hymenoptera: Tenthredinidae). J. N.Y. ent. Soc. 85(4): 193.Google Scholar
Petch, C.E. 1926. The apple curculio and its control in Quebec. Can. Dep. Agric. Ent. Br. Circ. 36. 4 pp.Google Scholar
Peterson, A. 1948. Larvae of Insects. An Introduction to Nearctic Species. Part I. Lepidoptera and Plant Infesting Hymenoptera. Edwards Bros., Inc., Ann Arbor, Michigan.Google Scholar
Peterson, A. 1960. Larvae of Insects. An Introduction to Nearctic Species. Part II. Coleoptera, Diptera, Neuroptera, Siphonaptera, Mecoptera, Trichoptera. Edwards Bros., Inc., Ann Arbor, Michigan.Google Scholar
Riley, C.V. 1871. The apple curculio. 3rd Annual report on the noxious, beneficial and other insects of the state of Missouri. pp. 29–35.Google Scholar
Ritcher, P.O. 1936. Larger apple curculio in Wisconsin. J. econ. Ent. 29(4): 697–701.Google Scholar
Roitberg, B.D., and Prokopy, R.J.. 1980. Oviposition behaviour and egg distribution of the European apple sawfly Hoplocampa testudinea Klug (Hymenoptera: Tenthredinidae). J. N.Y. ent. Soc. 88(1): 69.Google Scholar
Roitberg, B.D., and Prokopy, R.J.. 1984. Host discrimination by adult and larval European apple sawflies Hoplocampa testudinea Klug (Hymenoptera: Tenthredinidae). Environ. Ent. 13: 1000–1003.Google Scholar
Ross, H.H. 1943. The North American sawflies of the genus Hoplocampa (Hymenoptera: Tenthredinidae). Trans. Am. ent. Soc. 69: 61–92.Google Scholar
Steeves, T.A., Lehmkuhl, D.M., and Bethune, T.D.. 1979. Damage to saskatoons, Amelanchier alnifolia, by the apple curculio, Tachypterellus quadrigibbus (Coleoptera: Curculionidae). Can. Ent. 111: 641–648.Google Scholar
St. Pierre, R.G. 1986. Immature fruit loss in Amelanchier alnifolia Nuttall (Rosaceae). Ph.D. thesis, Department of Biology, University of Saskatchewan, Saskatoon, Canada.Google Scholar
St. Pierre, R.G. 1989. Magnitude, timing and causes of immature fruit loss in Amelanchier alnifolia (Rosaceae). Can. J. Bot. 67(3): 726–731.Google Scholar
St. Pierre, R.G. 1990. Observations on shoot morphology, anthesis, flower number and seed production in the Saskatoon, Amelanchier alnifolia (Rosaceae). Can. Fld. Nat. In press.Google Scholar