I'HI'. I.AM 1:1.1. iCOltN I'.lCiri'l.KS. 



970 



hb. C'lypeus oiiliic. r.itlifr dm^ply CDiicave, not extoiulod on (o the eye :it 



base; elytra willi almnd.'int (>rect hair; fcildr ]):\\e brownish- oi- 



reddish-yellow. is:',"), ihi.stis. 



(/(/. Autciiiia' O-.jdiiited : hind angles (\\' liii)ra,\ dislind; clypeus eniarginate. 



(/. Sui'Cace shining. inei'ta. 



(/(/. Surface sul)<iiia(|ue (ir irideseenl. qikkcus. 



is;j;! (57S'.)). L.\( ii.nostkk.na « kenui^vta Frohl.. Nalurforscher, 1792, 94. 



Oblong, rnhusi, very little wider behind. Brown, feebly shining, sur- 

 lacc clothed with \ery short yellowisli recumbent hairs, often with erect 

 hairs intermingled. Clyi)eus feebly emarginate, surface coarsely and closely 

 punctate, with short, erect hairs. Thora.x with side margins coarsely ser- 

 rate; sui-face coarsely and rather densely iiunctate. with rather long, erect 

 yellowish hairs and with tlie median smndth line interrupted. Elytral 

 l>unctures much finer than those of thorax, evenly and rather closely placed; 

 siibmarginal costa:' well marked and entire. Male with antennal club as 

 long as funicle; fifth ventral segment vaguely concave at nuddle; hind libl.e 

 with both s])urs free. Length 17-20 nun. (PI. II, fig. oSS. ) 



].iake. I'oi'tcr, Owcii and Vii^o comities; freiiiicnt. I*r()1)al)ly oc- 

 curs tliroiiii'lioiit till" State. May 7-Jiine 29. A more narrow^ and 

 {)arallel form than ilicis, with the hairs of thorax erect and not re- 

 cum])ent as there. 



1834 (.5790). IjAciixosterna albina Burm., Handbuch Entom., IV, 1855, 328. 



Oblong-oval, distinctly broader behind. Brown, moderately shining, 

 rather densely clothed with whlt(> hairs. Clypeus emarginate, densely punc- 

 tured and with short, erect hairs, which become longer on the front. Tho- 

 lax with sides obtusely angulate, the margins entire; surface rather closely 

 and coarsely punctate, without smooth median line. Elytra nearly as 

 coarsely l)ut less densely innictured than thorax; cost;e well marked, the 

 whitish pubescence with a few erect hairs. Male with antennal club a lit- 

 tle longer than the funicle; ventral segments slightly flattened at nuddle. 

 Female with clul) distinctly shorter than funicle. Length 1.5-18 mm. (PI. 

 Ill, fig. 393.) 



Marion County; scarce. ^lay 22. Occurs on tlie flowers and 

 leaves of the red haw', Crataegus, in low, open woods. A rare form, 

 known only from Ohio. Indiana and Mississi])pi. Easily recognized 

 l)y the conspicuous white pubescence of the surface. 



is;]5 (5790). Laciinostehna thisiis Fab.. Sjiec. Ins.. 1. 1781 



Oblong-ehingato. (ir slightly oval, a little Itroader lie- 

 hlud. Light to dark, dull hrownlsli-yellow. sparsely clnthed 

 with short, senu-erect hairs on elytra, with longer, erect 

 yellowish hair on thorax and I)ase of elytra. Clyi)ens en- 

 tire, concave, coarsely and sjtarsely punctured, not jiro- 

 longed at sides on the eyes. Thorax with margins entire, 

 fringed with long hali's. disk coarsely and rather closely 

 punctured. Elytra eveidy and rather closely imnctured. 

 the cost;c olisolele. Mah- with antennal club slightly 

 longer than stem; abdomen llaltened at middle; lifth si-g- 

 nient with a short, transverse acute ridge near the front 



1 ia. 37.5. X 1?. 

 (.■\fter Knot)el.) 



