Bulletin 441
December 1972

Alabama Agricultural Experiment Station

R. Dennis Rouse,
Director

Auburn University
Auburn, Alabama

Subfamily Orsodacninae

 


GENUS ORSODACNE LATREILLE


Genus Orsodacne Latreille

Orsodacne Latreille, 1802, Hist. Nat. Crust. Ins. III: 223.
Orsodacna Latreille, 1804, Sonnini's Buffon, Ins. 11: 305 (for Orsodane Lat.).
Orsodachna Leach, 1815, in Brewster's Edin. Encyc. 9 (1): 113.
     Eyes round, entire. Antennae long, slender, reaching base of elytra. Prothorax lacking distinct lateral margins, lateral teeth or tubercles; narrower at base than elytra. Elytra elongate; body fat and narrow. Anterior coxae separated, not prominent. Color extremely variable.
     The following species is the only member of the genus reported from the United States (1).

Orsodacne atra (Ahrens) (Figs. 8, 9)

Orsodacne atra Ahrens, 1810, Neu. Schrift. Naturf. Ges. Halle 1 (3): 46.
Orsodacne vittata Say, 1824, Jour. Acad. Nat. Sci. Philadelphia 3 (1): 430.
Orsodacne armeniacae Germar, 1824, Insectorum species novae aut minus cognitae,      descriptionibus illustratae, p. 526.
Orsodacne hepatica Say, 1826, Jour. Acad. Nat. Sci. Philadelphia 5 (2): 281.
Orsodacne childreni Kirby, 1837, in Richardson, Fauna Boreali-Americana, pt. 4, p. 221.
Orsodacne tibialis Kirby, 1837, in Richardson, Fauna Boreali-Americana, pt. 4, p. 221.
Orsodacne inconstans Newman, 1838, Entomol. Mag. 5: 391.
Orsodacne ruficollis Newman, 1838, Entomol. Mag. 5: 392.
Orsodacne trivittata Lacordaire, 1845, Mem. Soc. Roy. Sci. Liège 3 (1): 71.
Orsodacne luctuosa Lacordaire, 1845, Mem. Soc. Roy. Sci. Liège 3 (1): 72.
Orsodacne tricolor Melsheimer, 1847, Proc. Acad. Nat. Sci. Philadelphia 3: 60.
     “Elongate; prothorax without lateral margins, sides sinuate, widest at apical third; extremely variable in color, most of the color forms have been named; however, all these forms seem to constitute a single species. Length 4-8 mm. Width 1.5-3.3 mm.” (94).
     Alabama records: Mobile3 County.
     Remarks: No specimens of this species from Alabama were seen although Loding (75) recorded it from Mobile County. The only Orsodacne in his collection were labeled “Orsodachna childreni Kirby” from “Golden, Col.” and 4 labeled “Orsodachna atra Ahrens” from “Vernon, B. C.” Arnett (1) reported that O. atra occurs on Salix blossoms in the spring, so it may occur in Alabama.