SCUTHELLEROIDEA OF IOWA 30 
1877. RMicroporus obliquus Uhler, Bull. U. S. Geol. Geogr. Surv., III, 373. 
1882. Cydnus obliquus Signoret, Ann. Soc. Ent. France, II, Ser. 6, 161, Pl. 7, 
he (OT: 
1911. ee. obliquus Zimmer, Univ. Neb. Contrib. Dept. Ent., no. 4, 23. 
1916. Cydnus obdliquus Stoner, Ent. News, XXVII, 182. 
1917. AEthus obliquus Stoner, Bull. Lab. Nat. Hist. S. U. I., VII, no. 3, 43. 
Subovate; chestnut brown, shining, punctured, the lateral margins of 
pronotum and corium thickly fringed with long reddish hairs. Head short, 
anterior margin broadly rounded, slightly emarginate, the submargin of 
each lateral lobe with ten short, stout teeth and six or seven long bristles 
between them; the median lobe with two stout teeth; face distinctly flat- 
tened with long, oblique, punctured striae, the sides sparsely punctate 
with a distinct fovea next each eye and one near the tip each side of the 
tylus; base of head convex, impunctate. Antennae yellowish brown, sec- 
ond segment shortest, the third gradually becoming larger apically, the 
fourth and fifth distinctly moniliform, the fifth a little the longest. Ros- 
trum of same color as antennae, reaching mid-coxae, the first segment sur- 
passing the bucculae a littie, second segment longest and heaviest, the third 
enlarging distally, the fourth slender and a little shorter than the third. 
Pronotum wider than long, irregularly, rather coarsely punctate except a 
erescentic area on anterior part of disk, the lateral margins oblique, densely 
haired, the anterior angies rounded, extended a little forward; transverse 
impression not distinct, the surface behind the impression rather sparsely, 
coarsely punctate; humeri and posterior submargin impunctate, the pos- 
terior margin a little sinuate before the lateral angles. Scutellum shining, 
the disk strongly punctate, the base remotely, more finely punctate, the 
tip depressed, angularly and bluntly rounded. Hemelytra remotely, more 
finely punctured, the punctures becoming still finer towards the apex; costal 
margin broadly curved and with ten or eleven bristle-bearing punctures; 
posterior margin doubly sinuate; membrane white with a tinge of brown. 
Wings milk-white. Venter smooth on disk, finely, longitudinally striate on 
sides, the lateral margins with long hairs, the entire surface with re- 
motely placed hairs. Meso- and metasternum shiny, more or less finely 
striate. Ostiolar canal not extending laterally beyond the middle of the 
metasternal plate and terminating in a wide elevated lobe. Legs chestnut 
brown, heavy, the femora enlarged and with numerous long hairs; all the 
tibiae heavily armed with long, obliquely placed spines among which are 
numerous long hairs; tibiae slender, pale yellow. Length, 4.5 mm. Width 
at base of pronotum, 2.5 mm. 
This cydnid may be at once readily distinguished from any 
other in our fauna by the exceedingly heavy armature of the 
tibiae and the numerous long hairs on the margins of pronotum 
and hemelytra. In addition, the shape of the ostiolar canal 
differs from that in any of our other representatives of the sub- 
family in that it terminates in a broad elevated lobe. 
