628 



FAMILY XXIV. — ANTHOCORID^E. 



disk with a transverse post-median impression, sides in front 

 of middle strongly deflexed, not margined or ciliate; elytra 

 usually dimorphic, in macropterous forms 

 reaching tip of abdomen, in brachypter- 

 ous not farther back than fourth dorsal; 

 front femora swollen ; front tibiae of males 

 much enlarged near apex, obliquely trun- 

 cate, spinose beneath ; osteolar channel 

 long, curved forward at middle, almost or 

 quite reaching front margin of meta- 

 pleura. About 20 species are known, four 

 from our territory. These have been 

 mostly recorded or described under the 

 generic name Piesostethus Fieb., a synonym 

 of Xylocoris. (Fig. 158). 



KEY TO EASTERN' SPECIES OF XYLOCORIS. 



Fig. 158. Xylocoris cali 

 fornicus Reut., X 8. 

 (After Lugger). 



Elytra wholly or in great part dull white or 

 straw-yellow; macropterous forms only 

 known. 



b. Elytra uniformly pale straw-yellow, with at most the tips of clavus 



and cuneus and outer margin of membrane fuscous; curve at 

 middle of osteolar channel obtusely angulate. 602. galactinus. 

 bb. Elytra dull grayish- or yellowish-white, the cuneus and commissure 

 and sometimes the margins of scutellum and embolium piceous- 

 brown; curve at middle of osteolar channel in the form of an 

 obtuse arc. 603. sordidus. 



aa. Elytra in great part piceous-brown, brownish-yellow or black, mem- 

 brane in macropterous form white; both brachypterous and 

 macropterous forms known. 



c. Head, pronotum and scutellum piceous-brown, feebly shining; elytra 



brownish-yellow, subopaque, the corium in part, and inner basal 

 angle of cuneus dull yellow; length, 2.5 mm. 604. cursitans. 

 cc. Head, pronotum and scutellum black, strongly shining; elytra pice- 

 ous-black, the entire corium and inner basal angle of cuneus dull 

 white; length, 2 mm. 605. vicarius. 



602 (846). Xylocoris galactinus (Fieber), 1836, 107. 



Elongate-oval. Head, pronotum and scutellum dark chestnut-brown, 

 thinly clothed with short fine yellowish hairs. Elytra as in key, very 

 finely and sparsely pubescent; membrane milky-white, slightly iridescent; 

 legs brownish-yellow, the femora in part darker; under surface reddish- 

 brown. Joint 1 of antennae dark brown, reaching apical fourth of tylus, 

 2 brownish-yellow, the tip fuscous, three times the length of 1, 3 and 4 

 slender, subequal, each slightly shorter than 2. Pronotum with base 

 about one-third wider than apex; post median transverse impression dis- 

 tinct at middle, subobsolete on sides, disk in front of it almost smooth, in 



