This paper contains notes affecting the classification of the Bruchidae of United States and Canada, a list of all species found north of Mexico, and a list of World genera and their type-species. The Mexican Merobruchus vacillator (Sharp) is added to the fauna of this area. Transferred from our list to that of Latin America are: Acanthoscelides californicus (Boheman), Megacerus eugenie new name for Bruchus ramicornis Boheman nee Erichson, and Mimosestes innotatus (Pic.). The following are synonymized: Spermophagus (Zabrotes) semicinctus Horn (1894) with Zabrotes subfasciatus (Boheman 1833); Bruchus subserripes Fall (1910) with Acanthoscelides compressicornis (Schaeffer 1907); Lithraeus electus Bridwell (1952) with Lithraeus elegans (Blanchard 1851); Bruchus alboguttatus Motschoulsky (1874) with Meibomeus musculus (Say 1831); Bruchus bivulneratus Horn (1873) with Bruchus abbreviatus, inadvertently validated by Say = Sennius abbreviatus (Say 1824); Bruchus nigrinus Horn (1873), B. nictitans Motschoulsky (1874), and B. depressus Fall (1912) with Sennius cruentatus (Horn 1873); Bruchus pythonicus Pic (1913) with Stator pygidialis (Schaeffer 1907); and Bruchus biguttatus Fabricius (1801) = Bruchus biguttellus Schoenherr (1833) with Callosobruchus chinensis (Linnaeus 1758). Original spellings of the specific names of two species are revived: Megacerus pygidalis (Motschoulsky) nee pygidialis Pic, and Megacerus discoidus (Say) nec discoideus: authors. Bruchus lividus J. E. LeConte 1824 is placed in our list as an unrecognized species. Thirty-five new combinations are proposed.
THE CANADIAN ENTOMOLOGIST 139Mansingh, A., and R. N. Smallman. The effect of ~hotoperiod on the incidence and physiology of diapause in two saturniids. J. Insect Physiol. In press. hforris, 8. F. 1967. Factors inducing diapause in Hyphmtria cunea. Can. Ent. 99: 522-529. Tanaka, Y. 1951. Studies on hibernation with special reference to photoperiodicity and breeding of the Chinese Tussarsilkworm. VI. J. seric. Sci., T o k y o 20: 191-201. Williams, C. M. 1946. Physiology of insect diapause: the role of the brain in the production and termination of pupal dormancy in the giant silkworm, Platysamia cecropia. Biol. Bull. mar. biol. Lab., ~' 0 0 d S Hole 90: 234-243. Williams, C. Ail. 1956. Physiology of insect diapause. X. An endocrine mechanism for the influence of temperature on diapausing pupa of Cecropia silltworm. Abstract Can. Ent. 100: 139-145 (1068) The European Bruchidius ater (Marsh.), first discovered in Massachusetts in 1918, and later in Virginia, is here recorded from Rochester, N.Y. In addition toCytisus scoparius (L.) Link, its known host in the United States, the insect was reared from seeds of Petteria ramentacea (Sieber) Presl and Laburnum alpinurn Bercht. and Presl at the New York locality. All three plants are introductions from Europe. Bruchidius unicolor (01.) was recognized in 1965 when it was discovered in British Columbia breeding in the seed pods of Onobrychis viciaefolia Scop. A single specimen, collected in Nicola, B.C., in 1922, indicates that the insect has been present in southwestern Canada for a considerable time. AbstractCan. Ent. 100: 145-151 (1968) Ips calligraphus (Genmar) is distributed continentally rhroughout North America, including Guatemala and British Honduras. It has been collected on only rare occasions in California, primarily in che central Sierra Nevada Mountains. Four generations were observed during 1961 and 1962, and average summer development required about 40 days. All stages except the egg were observed in the winter. The unique gallery system exhibits four to six egg galleries, which range in length from 25.4 to 38.1 cm, and radiate characteristically from a large, irregular, nuptial chamber excavated by the male. At Grass Valley, Cal., this bark beetle was observed breeding predominantly in the thick-barked portions of the lower bole. Its galleries are often intermixed winh those of Dendroctonus brevicomis LeConte, I. confusus LeConte, I. latidens LeConte, and Melanophila califomica Van Dyke in ponderosa pine. I. confusus was the most abundant species of Ips in all localities where I. calligraphus was found.
Stator vachelliae new species is described from Texas, Mexico, El Salvador, and Venezuela and S. mexicanus new species is described from San Luis Potosi, Mexico. Stator usticolor (Sharp) and S. semicolon (Sharp) NEW COMBINATIONS have been determined as belonging to the sordidus complex. The following rearing records are recorded: S. vachelliae and S. subaeneus (Schaeffer) from Acacia farnesiana and S. mexicanus from Acacia cornigera.
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