. Brigham Young University science bulletin. Biology -- Periodicals. Biological Series, Vol. 13, No. 3 Revision or the Ween-il Genus Tychius 23. Fig. 1. Dorsal \ie\v of Ti/clihis tcctiis. eel of the antenna is longer tlian tlic next fonr .segments eombined. Five specimens examined from Kamela, Ore- gon, average mm in length and have very elongate, narrow rostra wiiich in both sexes are silghtly longer than the prothorax. In these the rostra are finely tapered from the base to the apex and amnminate distad of the antennal in- sertion, but the di,stal portions are deeplv rugu- lose. The spec
. Brigham Young University science bulletin. Biology -- Periodicals. Biological Series, Vol. 13, No. 3 Revision or the Ween-il Genus Tychius 23. Fig. 1. Dorsal \ie\v of Ti/clihis tcctiis. eel of the antenna is longer tlian tlic next fonr .segments eombined. Five specimens examined from Kamela, Ore- gon, average mm in length and have very elongate, narrow rostra wiiich in both sexes are silghtly longer than the prothorax. In these the rostra are finely tapered from the base to the apex and amnminate distad of the antennal in- sertion, but the di,stal portions are deeplv rugu- lose. The specimens from Nevada, Oregon, Alaska. and the Yukon Territorv ha\e extralimital distri- butions (Fig. 19). T>j(hi\is .scmis(jU(nnosus LeConte ( Figs. 9. 21) Tijchiiis semisquamosus LeConte (not Faiise. 1893). 1876, Proe. .Amer. Philos. Soc., :217-218 (Leco- type here designated: female. Fort Tejon, California, MCZ type .5229; Paralectotvpe, female, .same lo- cality, .MCZ, type .52292); Casey, 1892, Ann. New York Acad. .Sci'.. 6:418. Miccotrugus .v(';(«mo.«/.s: Klima. 1934. Coleoptcronmi Catalogus, 29():32. This species may be distinguished from other Nortli American representatives of the genus by the multiple, confused, as opposed to single, unifomi, median rows of long, narrow, light to dark reddish brown scales on the elytral inter- spaces; by the absence of fine, erect setae on the abdomen; and bv the asvmmetrical apical por- tion of the median lobe of the male genitalia (Fig. 9). It is doubtfully distinct from 7'. himeU- osus Casey but can be distinguished by the fol- lowing characters: the elongate-oval, white scales on the elvtral interspaces are very sparse and rarely imbricated, and the rostrum is not finely acuminate and the average size is smaller. Descri]jtion. Male: length mm, width mm; integument black to piceous, append- ages light to dark reddish brown; vestiture of white to dark reddish brown scales. Rostrum shorter than prothorax, ante
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