140 MISC. PUBLICATION 6 98, U. S. DEPT. OF AGRICULTURE 



Lesne ( 1901 ) erected Xylopsocus for nine species without designat- 

 ing a genotype. 



KEY TO THE SPECIES OF XYLOPSOCUS 



Antenna 9- segmented; apical declivity of elytra densely, coarsely punctate, 

 the elevated lateral margins completely enclosing the declivity; sides of 

 elytra densely punctate or granulose in front of apical declivity 



capucinus (Fabricius), p. 140. 



Antenna 10-segmented; apical declivity of elytra densely, finely granulose, 



the elevated lateral margin on each side obliterated at anterior third of 



declivity; sides of elytra transversely rugose in front of apical declivity 



castanoptera (Fairmaire), p. 141. 



Xylopsocus capucinus (Fabricius) 



Apate capucinus Fabricius, 1781, Species Insectorum, v. 1, p. 62 ; 1787, Mantissa 

 Insect., v. 1, p. 33. 



Synodendron capucinus Fabricius, 1792, Ent. System., v. 1, pt. 2, p. 359. 



Sinodendron capucinus Fabricius, 1801, Systema Eleutheratorum, v. 2, p. 378. 



Xylopsocus capucinus Lesne, 1901, Soc. Ent. de France Ann. (1900) 69 : 628, 631- 

 634, figs. 478, 481H182 ; Fauvel, 1904, Rev. d'Ent. 23 : 159 ; Lesne, 1904, Mission 

 Pavie Indo-Chine, Ent. Div. 3 : 106 ; Jakobson, 1913, Kafer Russland, pt. 10, 

 p. 806 ; Lesne, 1924, Bostrychides de l'Af rique Tropicale Francaise, pp. 216-217, 

 fig. 133 ; 1926, Treubia 7 : 119 ; Froggatt, 1927, Forest Insects and Timber Borers, 

 p. 102; Gardner, 1933, Indian Forest Rec, Ent. Ser. 18 (9) : 16-17, pi. 4, figs. 

 55-56 (larvae) ; Miller, 1934, Straits Settlements and Fed. Malay States, Dept. 

 Agr. Sci. Ser. No. 14, pp. 1, 2, 5, 6, 9, 16-20, pi. 1, figs. 16-19 ; Chujo, 1936, For- 

 mosa Nat. Hist. Soc. Trans. 26 : 409 ; Beeson and Bhatia, 1937, Indian Forest 

 Rec, New Ser., Ent. 2: 226, 230, 305-306, 309-320; Lesne, 1938, in Junk (pub.), 

 Coleopt. Cat., pt. 161, p. 68. 



Bostrichus eremita Olivier, 1790, Encyclop£die Methodique, Insectes, v. 5, p. 110 ; 

 1795, Entomologie, v. 4, Gen. 77, pp. 13-14, pi. 2, figs. 11 a, b. 



Apate marginata Fabricius, 1801, Systema Eleutheratorum, v. 2, p. 382. 



Enneadesmus nicooaricus Redtenbacher, 1867, Reise der Novara, v. 2, pp. 114-115. 



Male. — Black sometimes with elytra reddish; underside of body, 

 antennae, and palpi reddish brown or brownish yellow. 



Head slightly convex, unarmed in front, densely, finely granulose 

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

 with fine, longitudinal, parallel costae on occiput; clypeus finely, 

 densely punctate, sparsely clothed with short, recumbent, white hairs ; 

 clypeal suture deeply depressed at middle, obsolete at sides. Antennae 

 9-segmented, first segment three times as long as second; third to sixth 

 segments united much shorter than first; seventh to ninth segments 

 densely clothed with short, recumbent, yellowish hairs, without dis- 

 tinct sensory depressions, the apical segment oblong. 



Pronotum distinctly wider than long, widest benind middle ; sides 

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

 unciform tooth at apical angles ; posterior angles obtusely angulated ; 

 lateral margins sinuate near base; surface glabrous, densely, finely 

 punctate and granulose on basal half, densely, irregularly dentate on 

 apical half, the teeth broad, semierect, variable in size, and rasplike, 

 with a few larger teeth on each side near apical angles. 



Elytra at base subequal in width to pronotum behind middle ; sides 

 slightly expanded posteriorly, conjointly broadly rounded at apices 

 (angulate when viewed from above) ; surface glabrous, very densely, 

 finely, uniformly punctate, sometimes confluently punctate and granu- 

 lose near apical declivity ; apical declivity abruptly, obliquely deflexed, 

 flattened, without tubercles or callosities, the lateral margins strongly 



. 



