June 1S93.] 



PSYCHE. 



477 



A NEW SPECIES OF STEXOBOTHRUS FROM CONNECTICUT, 

 WITH REMARKS ON OTHER NEW ENGLAND SPECIES. 



BY A. P. MORSE, WELLESLEY, MASS. 



Stenobothrus olivaceus, sp. nov. Closely 

 approaching 6". maculipennis Scudd. Head 

 conical. Face very oblique. Vertex nearly 

 horizontal; acute at apex, in the J more, in 

 the $ less, the sides slightly excavate ; nar- 

 row between the eyes, in the $ about equal 

 to the width of an eye, in J less; slightly 

 expanded at anterior margin of eyes. Central 

 foveola of vertex rather deep; its edges broad, 

 raised; its depression slightly (J 1 ) or dis- 

 tinctly ( $ ) in advance of eyes, removed from 

 the tip of vertex about two-thirds (c? ) or one- 

 half ($) the distance between eyes. [See 

 fig.] Facial costa shallowly sulcate, more 

 deeply so than in maculipennis, the margins 

 sharp ; at meeting with the vertex angulate, 

 not rounded as in maculipennis. Lateral 

 foveolae distinct. Eyes slightly smaller and 

 less prominent than in maculipennis; seen 

 from the side the upper front portion is more 

 angulate in § , more rounded in $ than in 

 maculipennis. Antennae rather short, vari- 

 able, about equal to head and prothorax; 

 slightly flattened toward the base, at tip 

 gradually tapering to a fine point. Thorax 

 rather stout. Pronotum with the median 

 carina distinct, sharp. Lateral carinae 

 distinct; on the anterior half of prozona sub- 

 parallel or slightly convergent, on the re- 

 maining portion of pronotum evenly diver- 

 gent. Their course is straighter, less made 

 up of curves, and less convergent on the 

 prozona than in maculipennis. Tegmina 

 long, passing hind femora by one-eighth to 

 one-sixth their length. Wings longer and 

 more pointed than in maculipennis. Hind 

 femora long, passing tip of abdomen, and 

 rather slender. 



Color. In general either olivaceous-brown 

 or light green above, paler brown below; 

 with the usual dark longitudinal band along 

 lateral carinae of pronotum and middle of 



tegmina less sharply defined and in the male 

 becoming obsolete. The colors are dead and 

 have a faded appearance, with a peculiar 

 olivaceous tinge matching the tints of the 

 vegetation of its haunts. The dusky bands 

 of the tegmina are less distinct in brown than 

 in green specimens, and in males than in 

 females. Brown specimens are the more 

 plentiful. 



Green specimen, fresh. Face and cheeks 

 pale pea-green. Eyes brown or slate, con- 

 siderably darker than surroundings. Clypeus, 

 labrum and mouthparts light brown, palpi 

 paler or white. A brown or fuscous band 

 running backward from upper half of each 

 eye over occiput. Antennae light brown at 

 base, darker toward tip. Pronotum pale pea- 

 green ; the sides with a dark band running 

 along the dorsal third, black nearest carinae, 

 crossing them upon the disk of metazona. 

 Lateral carinae pale green or whitish. 



Meso- and meta-thorax with the sides pale 

 green. Pectus light brown. Tegmina pale 

 green ; opaque, becoming translucent on 

 apical half; a dark median band, composed 

 of nearly confluent small dusky spots extend- 

 ing usually one-third, rarely two-thirds, its 

 length, the edges indistinct ; this band is nar- 

 rower and shorter than in maculipennis, the 

 spots smaller and less distinct. Wings trans- 

 parent, veins and venules dusky; preapical 

 fourth of costal margin opaque greenish, the 

 veins heavily infuscated. Femora green or 

 brownish, tibiae and tarsi light brown ; spines 

 of hind tibiae tipped with black. 



Abdomen with the dorsum brown, lightest 

 at sides and on narrow median line, bordered 

 below by a broad griseous or fuscous band 

 punctate with black; pleurae palest, light 

 brown; venter light brown; ovipositor 

 brown, black at extreme tip. 



Brown specimens vary from pale brownish 



