TIIK LAMKIJ-ICOKN nKKTLES. 



1001 



Crawford and Pcny counties; rai-c. Ma\- 10 May 1(5. Tlie 

 larva^ of tin's sjiocios arc said to live on tlic trunks and roots oi' the 

 chostiiiit. wlicnce the specific name. As those trees ^row indigen- 

 ously only in Ihc soutlicni tliii-d of tlic Stale, il is |)rol)able that the 

 lieeth> Avill l>e found to he con(in<'d to that area. Moth it and canali- 

 culatns often have a small transverse hoary white spot formed of 

 exuded matt(>r near the niariiin and just hi.'hind the iiiithUe of the 

 elytra, ('asla)i(a' is shorUn* and has tlu> upjx'r surface more dis- 

 tinctly pubescent with short erect yellowisli hairs than in either tlie 

 precedin.c: or the ne.xt species. 

 1S64 (5932). CREMASTOcniLUs iiarrisii Kirby, Zool. Jonrn., Ill, 152. 



Elongato-obloug. Piceons, rather strongly sliining. Mentum plate deeply 

 concave, margins reflexed, more strongly at the sides and behind, its hind 

 margin broadly and deeply notched. Thorax more than one-half wider than 

 long, sides feebly curved ; front angles short, obtuse, limited within by a 

 deep impression and behind by a finely Impressed line: hind angles some- 

 what triangular, smooth, separated from the disk by a rather deep impres- 

 sion ; disk very sparsely and irregularly punctured and with distinct patches 

 of stiff hairs near the hind angles. Elytra very coarsely, deeply and densely 

 punctured. Length 10-11 mm. 



Lake, Starke and Vio-o counties; scarce. A[)ril 2-l:-Oetober 6. 

 Occurs usually in nests of larg'e reddish ants in sandy localities. 

 Readily known by its more shinini>' surface, more coarsely and 

 roughly sculptured el\'tra and larger tufts of hairs near hind angles 

 of thorax. 



XXXIX. OsMUDERMA Lcp. 1825. (Gr., "odor + skin.") 



Large, broad, dark 1)rown species, having the thorax distinctly 

 narrower tlian elytra and rounded on the sides; last spiracle nearer 

 the front than hind margin of the segment. Two of the three 

 known species occur in Indiana. 



1865 (5933). Osmoderma eremicola Knoch., Neue Beitr., 1S01. 10."). 



Broadly oval, de])ressed above. Dark chestnut or ma- 

 hogany brown, shining. Head deeply excavated between 

 the ej'es in both sexes, the edge with a tubercle above the 

 base of antenn;T>. Thorax with a deep impressed median 

 line on basal half, in front of which is a broad, deep ex-- 

 cavation. Ix.rdered in front by a sharp elevated line. Sur- 

 face of both thorax and elytra very tinely and s])Mrsi'ly 

 punctate. ry(>ngtli 2.">-2n mm. (Fig. 419.) 



Tak(>n (inl\- in ihe soutliei-n half of State, but 

 probal)ly occurs througiinut ; scarce. .Inly 4-Au- 

 gust 12. Found at electric light and about the 

 borders of open woods. Both it and the next ennt. ^^^-fui Natural size. 



' (Alter Uarns.; 



when captured, a strong odor of russia leather. 



