NORTH AMERICAN BOSTRICHIDAE 63 



Length 5-7 mm., width 2-3 mm. 



Type locality.— Caffraria, Southern Africa; type in either the 

 Stockholm or the Goteberg Museum. 



Distribution. — Recorded throughout all of tropical^ and southern 

 Africa. A good series of adults was intercepted at Xew York. De- 

 cember 3, 1941, in Dalbergia melanoxylon logs from Mozambique, 

 Portuguese East Africa. So far as known, the species has not become 

 established in the United States. 



Hosts. — Lesne (1924) recorded the adults making burrows during 

 September and October in the small branches of casuarines and also 

 in the wooden pickets of ''Mopasie'' used in the construction of the 

 native huts. Lounsburg (1915) recorded the species as boring into 

 the lead-covered aerial cables in the Union of South Africa. Tooke 

 and Scott (194-1) reported it as a frequent borer in Eucalyptus and 

 Acacia, and probably attacking logs of all the Leguminosae. Al- 

 though this species is primarily a borer in the sapwood of logs, the 

 adults sometimes bore into the green shoots and twigs of Acacia to 

 feed, and frequently kill the leaders of seedlings and young saplings. 



Sinoxylon sexdentatum (Olivier) 



Bostrichus sexdentatum Olivier, 1790. Encyc. Methodique, Insects, v. 5, pp. 107, 

 110 ; 1795, Entomologie, v. 4, Gen. 77, pp. 12-13, pi. 1, figs. 3a-b. 



Apate sexdentatum Perris, 1850, Soc. Erit. de France Ann. (ser. 2) S: 559-562, pi. 

 16, figs. 9-11. 



Sinoxylon sexdentatum Jacquelin-Duval, 1859-1863, Genera Coleopt. Europe, 

 f. 3, pi. 56, fig. 277; Kiesenwetter, 1877, in Erichson, Naturgesch. Insects. 

 Deut.. Coleopt.. v. 5, pt. 1, pp. 33-34; Key, 18S7, Lyon Soc. Linn. Ann. (ser. 2) 

 33 (1886): 220; Zoufal, 1894, Wien. Ent. Ztg. 13: 37; Schilsky, 1899, in 

 Krister and Kraatz, Kafer Europas, 36, No. 83 ; Lesne, 1901, Abeille 30 : 111, 

 113-114, pi. 4, figs. 97, 98; 1906, Soc. Ent. de France Ann. 75: 472, 518-524. 

 figs. 543-544 ; Reitter, 1911, Fauna Germanica 3 : 305 ; Jakobson, 1913, Kafer 

 Russland, pt. 10, p. 807, pi. 44, fig. 11; Balachowsky, 1935, Insectes Nuisibles 

 aux Plantes Cultivees, pp. 648-650; Lesne, 1938, in Junk (pub.), Coleopt. 

 Cat., pt. 161, pp. 52-53. 



Synowylon sexdentatum Perris, 1877, Larves de Coleopteres, p. 219. 



Apate hidens Fabricius, 1798, Entomologia Systematica, Sup., p. 157; 1801, 

 Systenia Eleutheratorum, v. 2, p. 381. 



The above-mentioned list of citations is not complete, only a few of 

 the more important ones being given. 



Body short. Black, except elytra, antennae, palpi, and tarsi, which 

 are reddish brown or brownish yellow. 



Head unarmed along anterior margin, finely, densely granulose, 

 and sparsely clothed with long, recumbent, whitish hairs on front, 

 with long, fine, longitudinal, parallel carinae on occiput : clypeus 

 densely, finely granulose, longitudinally carinate at middle, with a 

 transverse, sinuate carina near anterior margin extending on each 

 side to tooth at base of labrum ; clypeal suture distinct at middle, more 

 or less obsolete toward sides; labrum finely, densely punctate. An- 

 tennal club not flabellate, but segments strongly transverse, sparsely 

 clothed with short, recumbent, inconspicuous hairs, with distinct 

 yellow pubescent spots: first segment of club subtriangular, twice as 

 wide as long: second subtriangular, slightly wider than first, not 

 as wide as length of first seven segments united; third oblong. 



Pronotum slightly wider than long, widest at middle; sides broadly 

 rounded, more strongly converging anteriorly, with a small, unciform 

 tooth at apical angles; posterior angles broadly rounded; surface 



