Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-26T04:55:59.425Z Has data issue: false hasContentIssue false
  • English
  • Français

DESCRIPTION OF THE LARVAE OF ELEVEN NEARCTIC SPECIES OF HYGROTUS STEPHENS (COLEOPTERA: DYTISCIDAE: HYDROPORINAE) WITH AN ANALYSIS OF THEIR PHYLETIC RELATIONSHIPS

Published online by Cambridge University Press:  31 May 2012

Y. Alarie ,
P.P. Harper  and
R.E. Roughley
Y. Alarie
Affiliation:
Département de Sciences biologiques, Université de Montréal, Montréal, Québec, Canada H3C 3J7
P.P. Harper
Affiliation:
Département de Sciences biologiques, Université de Montréal, Montréal, Québec, Canada H3C 3J7
R.E. Roughley
Affiliation:
Department of Entomology, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2 with the collaboration of Département de Chimie-Biologie, Université du Québec à Trois-Rivières
Get access Rights & Permissions [Opens in a new window]

Abstract

A systematic analysis of larvae of 11 Nearctic species of Hygrotus Stephens was undertaken. The larvae are described and characterized; a key for their discrimination and illustrations of structural features of representatives of first- and third-instar larvae are provided. Many structural features, especially detailed variations in the chaetotaxy of cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi, were found to be useful for systematic and phylogenetic comparisons. Based on 21 larval characters, a cladistic analysis of the species studied was developed. A sister-group relationship between H. laccophilinus (LeConte) and the remaining available species is suggested. The less derived species, i.e. those without natatory setae on the legs, appear phylogenetically more closely related to the larvae of Hydroporus s.str. Hygrotus masculinus (Crotch) is the most derived species of the genus and, for many characters, seems more closely related to Hyphydrini. According to larval morphology, it is hypothesized that the genus Hygrotus diverged posteriorly to the genus Hydroporus Clairville.

Résumé

L’analyse systématique des larves de 11 espèces Néarctiques du genre Hygrotus Stephens est réalisée. Les larves sont décrites et caractérisées; une clé permettant leur identification et des illustrations de certains traits morphologiques de premiers et troisièmes stades larvaires sont également fournies. Une grande variabilité morphologique, particulièrement dans la chétotaxie de la capsule céphalique, des pièces buccales, des pattes, du dernier segment abdominal et des urogomphes, s’est avérée d’une grande utilité dans la comparaison taxonomique et phylogénétique de ces espèces. Une analyse cladistique est menée à partir de 21 caractères larvaires observées chez les espèces étudiées. Hygrotus laccophilinus (LeConte) est suggéré en tant que groupe-soeur de ces espèces. Les espèces moins évoluées, i.e. celles qui ne possèdent pas de soies natatoires sur les pattes paraissent phylogénétiquement plus proches des larves d’Hydroporus s.str. Hygrotus masculinus (Crotch) semble l’espèce la plus évoluée du genre et, par plusieurs caractères, se rapproche des larves d’Hyphydrini. Sur la base de la morphologie larvaire, il est également proposé que le genre Hygrotus ait divergé après le genre Hydroporus Clairville.

[Traduit par l’auteur]

Type
Articles
Information
The Canadian Entomologist , Volume 122 , Issue 5 , October 1990 , pp. 985 - 1035
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

REFERENCES

Alarie, Y. 1989. The larvae of Laccornis Des Gozis 1914 (Coleoptera: Adephaga: Dytiscidae) with description of L. latens (Fall, 1937), and redescription of L. conoideus (LeConte, 1850). Coleopts. Bull. 43: 365–378.Google Scholar
Alarie, Y., and Harper, P.P.. 1990. Primary setae and pores on the last abdominal segment and the urogomphi of larval Hydroporinae (Coleoptera: Adephaga: Dytiscidae), with notes on other dytiscid larvae. Can. J. Zool. 68: 368–374.CrossRefGoogle Scholar
Alarie, Y., Harper, P.P., and Maire, A.. 1989. Rearing dytiscid beetles (Coleoptera: Dytiscidae). Ent. Basil. 13: 147–149.Google Scholar
Alarie, Y., Harper, P.P., and Maire, A.. 1990. Primary setae and pores on legs of larvae of Nearctic Hydroporinae (Coleoptera: Dytiscidae). Quaest. Ent. 26: 199–210.Google Scholar
Anderson, R.D. 1971. A revision of the Nearctic representatives of Hygrotus (Coleoptera: Dytiscidae). Ann. ent. Soc. Am. 64: 503–512.CrossRefGoogle Scholar
Anderson, R.D. 1978. A revision of the Nearctic representatives of Hygrotus groups II and III (Coleoptera: Dytiscidae). Ann. ent. Soc. Am. 69: 577–584.CrossRefGoogle Scholar
Anderson, R.D. 1983. A revision of the Nearctic representatives of Hygrotus groups IV, V, VI (Coleoptera: Dytiscidae). Ann. ent. Soc. Am. 76: 173–196.CrossRefGoogle Scholar
Ax, P. 1987. The Phylogenetic System. The Systematization of Organisms on the Basis of their Phylogenesis. John Wiley & Sons, New York, NY. 340 pp.Google Scholar
Barman, E.H. Jr., 1972. The biology and immature stages of selected species of Dytiscidae (Coleoptera) of central New York State. Ph.D. thesis, Cornell University, Ithaca, NY. 207 pp.Google Scholar
Bertrand, H. 1928. Larves et nymphes des Dytiscidae, Hygrobiides et Haliplides. Encyclop. ent. 10: vi + 366 pp.Google Scholar
Bertrand, H. 1972. Larves et Nymphes des Coléoptères Aquatiques du Globe. F. Paillart, France. 804 pp.Google Scholar
Bousquet, Y., and Goulet, H.. 1984. Notation of primary setae and pores on larvae of Carabidae (Coleoptera: Adephaga). Can. J. Zool. 62: 573–588.CrossRefGoogle Scholar
Cuppen, J.G.M., and Nilsson, A.N.. 1984. The second- and third-instar larvae of Hygrotus decoratus (Gyllenhal) (Coleoptera: Dytiscidae). Ent. Scand. 15: 65–69.CrossRefGoogle Scholar
Eldredge, N., and Cracraft, J.. 1980. Phylogenetic Patterns and the Evolutionary Process. Method and Theory in Comparative Biology. Columbia University Press, New York, NY. 349 pp.Google Scholar
Fall, H.C. 1919. The North American Species of Coelambus. Mount Vernon, New York. 220 pp.CrossRefGoogle Scholar
Galewski, K. 1978. The description of the third stage larva of Coelambus polonicus Aubé (Coleoptera: Dytiscidae) with a key to the known larvae of the Central European species of Coelambus Thoms. Bull. Acad. Pol. Sci. sér. sc. biol. 26: 309–312.Google Scholar
Galewski, K. 1987. Some notes on generic characters of third larval instar of Central European species of Coelambus Thoms., Hygrotus Steph., and Stictotarsus Zimm. (Coleoptera: Dytiscidae). Polk. Pismo Ent. 57: 471–474.Google Scholar
Hatch, M.H. 1953. The Beetles of the Pacific Northwest. Pt. I: Introduction and Adephaga. University of Washington Press, Seattle, WA. Vol. 16. 340 pp.Google Scholar
Hennig, W. 1965. Phylogenetic systematics. A. Rev. Ent. 10: 97–116.CrossRefGoogle Scholar
Hennig, W. 1966. Phylogenetic Systematics. University of Illinois Press, Urbana, IL. 263 pp.Google Scholar
Jacobson, H.R., Kistner, D.H., and Pasteels, J.M.. 1988. Generic revision, phylogenetic classification, and phylogeny of the termitophilous tribe Corotocini (Coleoptera: Staphylinidae). Sociobiolog. 12: 1–245.Google Scholar
Matta, J.F. 1983. Description of the larva of Uvarus granarius with a key to the Nearctic Hydroporinae larvae. Coleopts. Bull. 37: 203–207.Google Scholar
Meinert, F. 1901. Vandkalvelarverne (larvae Dytiscidarum). K. dansk. Vidensk. Selsk. Skr. (6) 9: 341–440, 7 plates.Google Scholar
Nilsson, A.N. 1982. A key to the larvae of the Fennoscandian Dytiscidae (Coleoptera). Fauna Norrlandica, Umea. 2: 1–45.Google Scholar
Nilsson, A.N. 1983. The larva of the predaceous water beetle Coelambus novemlineatus (Coleoptera: Dytiscidae). Aquat. Insect. 5: 45–50.CrossRefGoogle Scholar
Nilsson, A.N. 1986. Larval morphology and phenology of four Fennoscandian species of Hydroporus Clairville (Coleoptera: Dytiscidae), with a preliminary key to the known larvae. Aquat. Insect. 8: 141–153.CrossRefGoogle Scholar
Nilsson, A.N. 1987 a. Larval morphology of Fennoscandian Oreodytes Seidlitz (Coleoptera: Dytiscidae), with notes on hydroporine leg chaetotaxy and taxonomy. Ent. Tidskr. 108: 99–108.Google Scholar
Nilsson, A.N. 1987 b. The 3rd-instar larvae of 8 Fennoscandian species of Hydroporus Clairville (Coleoptera: Dytiscidae), with notes on subgeneric classification. Ent. Scand. 17: 491–502.CrossRefGoogle Scholar
Nilsson, A.N. 1988. A review of primary setae and pores on legs of larval Dytiscidae (Coleoptera). Can. J. Zool. 66: 2283–2294.CrossRefGoogle Scholar
Nilsson, A.N. 1989. Larvae of northern European Hydroporus (Coleoptera: Dytiscidae). Syst. Ent. 14: 99–115.CrossRefGoogle Scholar
Ross, H.H. 1974. Biological Systematics. Addison-Wesley Publishing Company, Inc., Reading, MA. 345 pp.Google Scholar
Sharp, D. 1882. On aquatic carnivorous Coleoptera or Dytiscidae. Sci. Trans., Royal Dublin Soc. (Ser. 2) 2: 179–1003.Google Scholar
Spangler, P.J., and Gillespie, J.M.. 1973. The larva and pupa of the predaceous water beetle, Hygrotus sayi (Coleoptera: Dytiscidae). Proc. biol. Soc. Wash. 86: 143–152.Google Scholar
Stephens, J.F. 1828. Illustrations of British Entomology. Mandibulata, Vol. 2. London. 200 pp.CrossRefGoogle Scholar
Thomson, G.G. 1860. Skandinaviens Coleoptera, synoptiskt bearbetade. Vol. I. Lund.290 pp.Google Scholar
Van Nieukerken, E.J., and Nilsson, A.N.. 1985. The third-instar larva of the water beetle Coelambus nigrolineatus (Stevens) (Coleoptera: Dytiscidae). Ent. Scand. 16: 1–4.CrossRefGoogle Scholar
Watrous, L.E., and Wheeler, Q.D.. 1981. The out-group comparison method of character analysis. Syst. Zool. 30: 1–11.CrossRefGoogle Scholar
Watts, C.H.S. 1970. The larvae of some Dytiscidae (Coleoptera) from Delta, Manitoba. Can. Ent. 102: 716–728.CrossRefGoogle Scholar
Wiley, E.O. 1981. Phylogenetics. The Theory and Practice of Phylogenetic Systematics. John Wiley & Sons, New York, NY. 439 pp.Google Scholar
Wolfe, G.W. 1985. A phylogenetic analysis of pleisiotypic hydroporine lineages with an emphasis on Laccornis Des Gozis (Coleoptera: Dytiscidae). Proc. Acad. Nat. Sci. Phil. 137: 132–155.Google Scholar
Wolfe, G.W., and Roughley, R.E.. 1985. Description of the pupa and mature larva of Matus ovatus ovatus (Coleoptera: Dytiscidae) with a chaetotaxal analysis emphasizing mouthparts, legs and urogomphus. Proc. Acad. Nat. Sci. Phil. 137: 61–79.Google Scholar
Young, F.N., and Wolfe, G.W.. 1984. Hygrotus berneri, a new water beetle from Florida. J. Kansas ent. Soc. 57: 130–133.Google Scholar