204 Annals Entomological Society of America [Vol. XI, 



tan genus than in Alydus, there being a close resemblance in 

 many respects to Biirtinus. Only one species occurs in the 

 United States, although another, somewhat smaller one ipal- 

 lescens) is found in the West Indies. 



\). Megalotomus quinquespinosus Say. 



Lviiociis quinqiicspinosiis Sav (1825) 323'; [(1859) 247'-]. 



Ahdus criientus Herrich-Schaeffer (1848) 100^ Dallas (1852) 477. 



Al'ydus quinquespinosus Uhler (1861) 23, (1875) 8323. 



Alvdus (Megalotomus) quinquespinosus vStal (1870) 214-*. 



Megalotomus (or Alvdus) quinquespinosus Uhler (1876) 294^, (1877a) 406", (1878b) 

 .383'; Provancher (1885) .56^ Osborn (1892)-', (1904)1"; Montandon (1893)'»; 

 Van Duzee (1894)i2; Gillette and Baker (1895)'»; Snow (1904)'^ (1906b)'^ 

 Crcvecoeur (1905)'^; Bueno (1905)'", (1908)'", (1913a)'«; Bueno and Brimley 

 (1907)1^ Van Duzee (1908)-'°, (1917)2'; Bueno and Englehardt (1910)=-; Smith 

 (1910)'^3; Parshle.v (1914)=^ 



Descriplion. — Color dusky flavesccnt to rufous. Head black- 

 beneath and with a transverse semilunar black spot above; sternum 

 of thoracic and sometimes basal abdominal segments black. Antennae 

 with first three segments fla^^escent, sometimes darker at apex, subcqual 

 in length, fourth segment much longer and with apical two-thirds 

 fuscous. 



Pronotum with lateral angles acute, and with a transverse, elongate 

 concavity along posterior margin of the disc. Legs pale flavous, 

 except apical half of posterior femora which is red; the latter anned 

 with five or six spines and surpassing apex of abdomen. 



Claspers of male with a large toothdike mcsal expansion near base 

 and a long attenuated apex. Sixth ventral of female split at tip, 

 lateral plates of hypopygium widely separated at base, convergent, 

 broadly rounded at apex, and with mesal margins entire. 



This is one of the most widely distributed Coreidse of the 

 northern states and appears in nearly every faunal list of 

 Heteroptera in the temperate zone. In addition to Montan- 

 don's record of its occurrence in Florida's which has not been 

 confirmed by later collectors, it has been found in Canada^"""'^", 

 Maine-', Massachusetts", New York "-'••^-'«-'S New Jersey'"--'\ 

 PennsylvaniaS North CaroHna''^-' •'---, Ohio^\ Ilhnois^-^ Wis- 

 consin"-'-'"-", loiva-'^^', Kansas'-\ Colorado'^"''^"^, Utah'', Ari- 

 zona^\ Cahfornia'S Washington-', and Vancouver Island-'. 

 Collected in Wisconsin in Milwaukee'", Dane'-^^"'""", Sauk=, 

 Vernon"', Pierce"', Polk^ and St. Croix"' counties, but not so 

 common as Protenor beljragei and Alydus conspersus and not 

 extending so far north. After the first of August the adults 

 may be found along the edges of woods where they are active 

 flyers. The nymphs feed on Oxytropis in Colorado, according 

 to Dr. Ball, and probably on Lupine, reaching maturity in 



