13. 
14. 
16. 
18. 
19. 
BARK BEETLES OF THE GENUS HYLASTES 
Body 5.0 to 6.5 mm. long and more slender (3.16 times as long as wide) ; 
sculpture rather coarse; pronotum coarsely punctured, its sides 
straight and diverging on posterior two-thirds, broadly rounded in 
macer Leconte 
Body 4.6 to 5.2 mm. long and less slender (3.05 times as long as wide) ; 
sculpture finer; pronotum with moderate punctures, its sides arcuate, 
moderavely TLounded Ine Ebon t= sae eee longus Leconte 
Brightly shining; sculpture fine; pronotum with median line nearly 
lacking; frons very finely punctured, not granulate, shining; epistoma 
Strongly, simpressed i= 220). | Ras SS oe ee 
Moderately shining; sculpture moderate or very coarse; pronotum with 
median line narrow and weakly elevated; frons granulate-punctate, 
moderately shining or opaque; epistoma moderately impressed____~— 
5). Body 4.0 mm. or more long; punctures of pronotum and elytra moder- 
ate; pronotum considerably narrower than elytra_-__~_ nitidus Swaine 
Body about 3.0 mm. long; punctures of pronotum and elytra rather fine; 
pronotum only slightly narrower than elytra___ fulgidus, new species 
Pronotum 1.19 times as long as wide, slightly narrower than elytra; 
punctures moderate in size; elytral interspaces equal to striae in 
width, convex, finely rugose-granulate; strial punctures moderate in 
size, circular ; pubescence scanty on disk, abundant on declivity 
gracilis Leconte 
Pronotum slender (1.28 times as long as wide), much narrower than 
elytra; punctures very coarse, close; elytral interspaces narrower 
than striae on disk, nearly flat, finely granulate; strial punctures 
very coarse, elongate quadrate; pubescence abundant on _ disk, 
longer and more conspicuous on declivity_____ ____ longicollis Swaine 
. Beak with a shining median sulcus; pronotum granulate-punctate, 
widest in front of middle, its sides straight on posterior two-thirds; 
elytra narrowly rounded behind, with interspaces convex, finely 
granulate; Southeastern States________ Bee eee 7110s seo hapuis 
Beak devoid of median sulcus; disk of pronotum punctate, not granu- 
GR te wiaie eel h eevee cis cas ees tee MF FOE ur eee Ds eRe, ees he 
Pronotum nearly as wide as elytra, usually widest near base, its sides 
parallel or gradually converging on posterior two-thirds; elytra nar- 
rowly rounded behind, surface usually subopaque; interspaces nar- 
rower than coarsely punctured striae; Eastern States__ tenwis Eichhoft 
Pronotum usually widest at or in front of middle; elytra variously 
rounded behind, surface shining; interspaces on disk as wide as or 
widerathanstrae vexceptyiniminwbus, Mi Spe. 8.5 2. 
Pronotum with sides diverging or sinuate on posterior two-thirds, side 
margin subacute behind; punctures fine and close; elytra with striae 
rather weakly impressed, strial punctures rather small; interspaces 
Hel VE sCRAMU later WVeStern: «States. ee 
pusillus, new species 
. Frons shining, densely, minutely punctured: pronotum slender (1.3 times 
as long as wide), sides sinuate on posterior two-thirds; elytra with 
strial punctures rather fine; interspaces wider than striae; Arizona, 
INC wap Vl@xch OMe: MTree 81) TAGE Path parvus, new species 
Frons subopaque, finely, densely granulate-punctate; pronotum 1.2 
times as long as wide, sides straight and feebly diverging on pos- 
te ‘ior two-thirds; elytra with strial punctures of moderate size ; 
interspaces narrower than striae; Western States. minutus, new species 
HYLASTES SALEBROSUS Eichhoff 
1 
18 
6 
19 
9» 
= 
0 
Hylastes salebrosus EHichhoff, 1868, Berlin. Ent. Ztschr. 12: 146; Leconte, 1868. 
Amer. Ent. Soc. Trans. 2: 177; Leconte, 1876, Amer. Phil. Soc. Proc. 
synomym of porculus Er.) ; Blandford, 1898, Ent. News 9: 5 (as 
scabripennis Zimm.) ; Swaine, 1909, N. Y. State Mus. Bul. 134: 
1918, Canada Dept. Agr. Ent. Branch Bul. 14 (2) : 77. 
15: 389 (as 
synonym of 
146; Swaine, 
