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STUDIES ON THE GARDEN SYMPHYLAN, SCUTIGERELLA IMMACULATA (SYMPHYLA: SCUTIGERELLIDAE)

Published online by Cambridge University Press:  31 May 2012

J. S. Waterhouse
Affiliation:
Department of Biological Sciences, State University College of Arts and Science, Plattsburgh, New York

Abstract

A study of the first 24 instars of the garden symphylan shows that antennal segmentation increases as each animal molts. A first instar has six antennal segments, whereas 24th instars have a maximum of 59 segments. First instars have maximum weights of 0.009 mg and lengths of 1.0 mm; 24th instars have maximum weights of 1.22 mg and lengths of 6.0 mm. Ninety-five per cent mortality occurred within 3 hours in soil cultures exposed to relative humidities between 58 and 75% if the soil surface of each culture was not covered by a succulent lettuce section. The same mortality occurred within 13 hours in lettuce-covered cultures exposed to similar humidities. At 95% relative humidity, 95% mortality occurred in 313.5 hours; in covered cultures, in 2 months. At 98 and 100% humidities, no symphylan desiccation occurred in uncovered or covered cultures. The results obtained in the humidity tests demonstrate the importance of relative humidity in maintaining large symphylan populations in the root feeding zone of infested soil, and also, the way in which succulent plant materials may aid in creating more favorable microenvironments for garden symphylans.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1968

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References

Chardard, R. 1947. Nouvelle stations de Symphyles, distinction et rapport numérique des sexes. Bull. Mus. Hist. nat., Paris 19: 177184.Google Scholar
Edwards, C. A. T. 1957. Bionomics of the Symphyla. Ph.D. Thesis, University of Wisconsin.Google Scholar
Juberthie-Jupeau, L. 1956. Biologie. Existence de spermatophores chez les Symphyles. C. r. hebd. Séanc. Acad. Sci., Paris 243: 11641166.Google Scholar
Juberthie-Jupeau, L. 1959 a. Biologie. Sur une modalité nouvelle de prise des spermatophores et sur l'existence des poches spermatiques gnathales chez les Scutigerallidae (Symphyles, Myriapodes). C. r. hebd. Séanc. Acad. Sci., Paris 248: 862865.Google Scholar
Juberthie-Jupeau, L. 1959 b. Biologie. Étude de la ponte chez la Symphyles (Myriapodes), avec mise en évidence d'une fecondation esterne des œufs par la femelle. C. r. hebd. Séanc. Acad. Sci., Paris 249: 18211823.Google Scholar
Juberthie-Jupeau, L. 1959 c. Biologie. Données sur les phénomènes externes de l'émission des spermatophores chez les Symphyles (Myriapodes). C. r. hebd. Séanc. Acad. Sci., Paris 248: 469472.Google Scholar
Juberthie-Jupeau, L. 1960. Cycle d'émission des spermatophores et évolution des testicules et des vésicules séminales au cours de l'internue chez Scutigerella pagesi Jupeau (Symphyles). C. r. hebd. Séanc. Acad. Sci., Paris 250: 22852287.Google Scholar
Juberthie-Jupeau, L. 1963. Recherches sur la reproduction et la mue chez les Symphyles. Archs Zool. exp. gén. 102: 1172.Google Scholar
Juberthie-Jupeau, L. 1964. Reproduction et mue chez les Symphyles. Écol. et Biol. du Sol. 1: 2140.Google Scholar
Michelbacher, A. E. 1938. The biology of the garden centipede, Scutigerella immaculata. Hilgardia 11: 1148.Google Scholar
Ravoux, P. 1948. Observations sur l'anamorphose de Scutigerella immaculata. Archs Zool. exp. gén. 85: 189198.Google Scholar
Ravoux, P. 1959. Études sur la segmentation des Symphyles basées sur la morphologie définitive et la post embryogenèse, suives de considération sur la segmentation des autres Myriapodes. Thèse Fac. Sci. Dijon.Google Scholar
Savos, M. G. 1958. The bionomics of the garden symphylid. Ph.D. Thesis, Oregon State University.Google Scholar
Waterhouse, J. S. 1967. Population studies of the gardcn symphylan, Scutigerella immaculata (Symphyla: Scutigerellidae). Can. Ent. 99: 696702.CrossRefGoogle Scholar