54 MISC. PUBLICATION 6 9 8, TJ. S. DEPT. OF AGRICULTURE 



p. 288; Everts, 1922, Coleopt. Neerlandica, v. 3, p. 364; Lesne, 1924, Bostry- 

 chides de l'Afrique Tropicale Frangaise, pp. 111-208. 

 Bostrychina Jakobson, 1913, Kafer Russland, pt. 10, pp. 801, 803-805. 



This is one of the largest tribes of Bostrichidae, containing many 

 genera which are found in all parts of the world. Species belonging 

 to nine of these genera are either established in the United States, or 

 have been intercepted in commerce. 



KEY TO THE GENERA OF BOSTRICHINI 



1. Posterior coxal cavities completely margined on first visible abdominal 



sternite 2 



Posterior coxal cavities not completely margined on first visible abdom- 

 inal sternite Bostrichus Geoffroy, p. 54. 



2. Mandibles more or less attenuate toward apices; antennal club not flabel- 



late nor with segments strongly transverse 3 



Mandibles very short, broad and truncate at apices; antennal club flabel- 

 late or with segments strongly transverse- -Sinoxylon Duftschmid, p. 57. 



3. Margins of buccal cavities strongly dentate below eyes 



Bostrychoplites Lesne, p. 64. 

 Margins of buccal cavities not dentate below eyes 4 



4. Segments of antennal club with longitudinal depressions on each sur- 



face Amphicerus LeConte, p. 66. 



Segments of antennal club without longitudinal depressions, but with 

 round depressions on each surface 5 



5. Anterior angles of clypeus broadly rounded (except in truncatus) 



Lichenophanes Lesne, p. 75. 

 Anterior angles of clypeus obtuse, acute, or rectangular 6 



6. Pronotum transversely depressed behind anterior margin 



Heterobostrychus Lesne, p. 83. 

 Pronotum not transversely depressed behind anterior margin 7 



7. Front of head transversely depressed or flattened behind eyes 8 



Front of head regularly convex behind eyes Micrapate Casey, p. 87. 



8. Front of head transversely, perpendicularly elevated behind clypeus 



Apatides Casey, p. 95. 



Front of head not transversely, perpendicularly elevated behind clypeus, 



sometimes with a short, more or less distinct, elevation at middle 



behind clypeus Bostrychopsis Lesne, p: 97. 



Genus BOSTRICHUS Geoffroy 



Bostrichus Geoffroy, 1762, Historie Abregee des Insects, v. 1, pp. 301-303, pi. 5, 

 fig. 1 ; Mtiller, 1764, Fauna Insectorum Fridrichsdalina, p. xii ; Fabricius, 1775, 

 Systema Entomologie, pp. 59-60 (part) ; 1777, Genera Insectorum, p. 14; 

 Stephens, 1830, Illus. Brit. Ent., Mandibulata, v. 3, pp. 349-350 ; Wollaston, 1854, 

 Ins. Maderensia, p. 288 ; Thomson, 1S59, Skandinaviens Coleopt., v. 1, p. 92 ; 

 LeConte, 1861, Smithsn. Inst. Misc. Collect. 3 (1) : 208; Thomson, 1863, Skandi- 

 naviens Coleopt., v. 5, pp. 199-200 ; Kiesenwetter, 1877, in Erichson, Naturgesch. 

 Insect Deut., Coleopt., v. 5, pt. 1, pp. 34-37 ; Seidlitz, 1889, Fauna Transylvanica, 

 Kaefer, pp. 116, 530 ; 1889, Fauna Baltica, Kaefer, pp. 116, 495 ; Lesne, 1899, 

 Soc. Ent. de France Ann. (1898) 67: 442, 447-455. 



Bostrychus Zoufal, 1894, Wien. Ent. Ztg. 13 : 35, 40-41 ; Schilsky, in Kuster and 

 Kraatz, Kafer Europas 36: pp. TT ; Lesne, 1901, Abeille 30: 86, 88-90, pi. 1, 

 fig. 30 ; Csiki, 1903, Rov. Lapok. 10 : 18 ; Lesne, 1905, Abeille 30 : 249 ; Reitter, 

 1911, Fauna Germanica, v. 3, pp. 301, 303 ; Jakobson, 1913, Kafer Russland, pt. 

 10, pp. 803, 805 ; Everts, 1922, Coleopt. Neerlandica, v. 3, p. 365 ; Lesne, 1938, in 

 Junk (pub.), Coleopt, Cat., pt. 161, pp. 31-33. 



Apate Redtenbacher, 1845, Gattungen Deut. Kaefer Fauna, p. 94; 1847-1849, 

 Fauna Austriaca, Kafer, pp. 35, 354; Jacquelin-Duval, 1859-1863, Genera 

 Coleopt.. Europe, v. 3, pp. 230, 233, pi. 56, fig. 279 ; Everts, 1901, Coleopt. Neer- 

 landica, v. 2, pp. 210, 211-212. 



Head slightly convex on occiput, transversely flattened behind eyes, 

 deeply inserted in prothorax, not visible from above ; clypeus strongly 



! 



