Gryllus firmus är en insektsart som beskrevs av Scudder, S.H. 1902. Gryllus firmus ingår i släktet Gryllus och familjen syrsor. Inga underarter finns listade i Catalogue of Life.

Källor Capinera, R.D. Scott & T.J. Walker (2004) , Field Guide to Grasshoppers, Katydids, and Crickets of the United States, Cornell University Press, Ithaca 249 Rehn, J.A.G. & Hebard (1912) On the Orthoptera found on the Florida Keys and in extreme Southern Florida, Proceedings of the Academy of Natural Sciences, Philadelphia (Proc. Acad. Nat. Sci. Philad.) 64(2):235-276 Rehn, J.A.G. & Hebard (1905) A Contribution to the Knowledge of the Orthoptera of South and Central Florida, Proceedings of the Academy of Natural Sciences, Philadelphia (Proc. Acad. Nat. Sci. Philad.) 57:29-55, Pl. 1 Chopard [Ed.] In Beier [Ed.] (1967) Gryllides. Fam. Gryllidae; Subfam. Gryllinae (Trib. Grymnogryllini, Gryllini, Gryllomorphini, Nemobiini) , Orthopterorum Catalogus, Orthopterorum Catalogus 10:213 pp. Randell (1964) The male genitalia in Gryllinae (Orthoptera: Gryllidae) and a tribal revision, Canadian Entomologist (Canadian Ent.) 96:1565-1607 Scudder, S.H. (1902) The species of Gryllus found in the United States east of the Sierra Nevadas, Psyche, A Journal of Entomology (Psyche) 9(309):291-296 Alexander, R.D. (1957) The taxonomy of the field crickets of the eastern United States (Orthoptera: Grylloidea: Acheta), Annals of the Entomological Society of America (Ann. Ent. Soc. Amer.) 50:584-602 Doherty & Storz (1992) Calling song and selective phonotaxis in the field crickets, Gryllus firmus and G. pennsylvanicus (Orthoptera: Gryllidae), Journal of Insect Behavior (Jour. Ins. Behav.) 5(5):555-569, illustr. Ross, C.L. (2006) Ant predation as a selective agent on overwintering eggs in a field cricket mosaic hybrid zone, Journal of Orthoptera Research (Jour. Orth. Res.) 15(1):13-21 Fairbairn & Roff (1990) Genetic correlations among traits determining migratory tendency in the sand cricket, Gryllus firmus, Evolution 44(7):1787-1795, illustr. Roff (1990) Antagonistic pleiotropy and the evolution of wing dimorphism in the sand cricket, Gryllus firmus, Heredity 65(2):169-177, illustr. Roff (1990) Selection for changes in the incidence of wing dimorphism in Gryllus firmus, Heredity 65(2):163-168, illustr. OrthopteraSF: Orthoptera Species File. Eades D.C., Otte D., Cigliano M.M., Braun H., 2010-04-28

Kategori:Syrsor firmus