PROC. ENT. SOC. WASH., VOL. 23, NO. 3, MAR., 1921 67 



Membrane plainly white margined. Costal, apical, commissural and 



inner claval margins of hemielytra plainly red .. ...circittnlitHS Stal. 



Lygaeus rubricatus, n. sp. 



Coloration. Ochraceous-red, with antennae, head and sometimes more or 

 less of the hemielytra infuscated; narrow apical margin of corium and frequently 

 apical carina of scutellum pale yellow. Membrane fuscous, narrowly pale 

 margined in brachypterous forms, more broadly pale in macropterous forms. 

 Obscure pale spot at base of head. Beneath, head, rostrum, meso- and meta- 

 s tern urn, venter and legs for the most part brownish. Prosternum reddish- 

 ochraceous. Bucculae, acetabulae, sometimes the posterior margins of meso- 

 and metapleura, disk and lateral margins of venter and frequently base of legs, 

 pale ochraceous. Odoriferous orifices pale. 



Head, lateral margins ot pronotum and surface of hemielytra sparsely short 

 pilose. Bucculae rather low, not extended much beyond middle of head. Tip 

 of rostrum reaching between posterior coxae. Reddish-ochraceous pronotum 

 impunctate, with anterior margin rather strongly concave, submargin impressed 

 on, either side; provided just before middle with four short pronounced trans- 

 verse impressions, the two inner ones more narrowy separated; median longi- 

 tudinal carina faintly indicated; disc on either side scarcely depressed. Hemi- 

 elytra fusco-reddish with lightly elevated veins sometimes paler. Membrane 

 frequently abbreviated, then scarcely reaching beyond apex of 5th abdominal 

 segment and more narrowly margined with white. 



Length, 5-6 mm. 



Type. d" Tucson, Ariz., Apr. 21, Coll. by H. G. Hubbard 

 (Type No. 24116 U. S. N. M.). 



Paratypes. d" Tucson, Ariz., Apr. 29, 2 9 's Tucson, Ariz., 

 1 9 Ft. Yuma, Ariz., Jan. 28, 4 9 's "Ariz" (U. S. N. M.); 

 3 $ 's Scottsdale, Ariz, (my Coll.). 



This species belongs in the subgenus Ochrostomus, being 

 most closely related to L. carnosulns Van D. from which it can 

 easily be separated by color differences as given in the preceding 

 Key. Eight of the twelve specimens mentioned above are 

 brachypterous. 



SYNONYMY AND DISTRIBUTION. 







Subgenus Lygaeus (Fab) Van Duzee. 

 formosus Blanchard Fla., Neotropical. 

 trnculentus Stal Calif., Neotropical. 



tiircicus Fab ( = trininciiliitiis Dallas). U. S. as far west as the Rocky Mts. 

 ktilmii Stal. U. S., Mexico. 



subspecies kalmii (Stal) Parshley Western U. S. 



angustomarginatus Parshley Eastern U. S. 

 recliratiis Say West and Southwest U. S., Neotropical, 

 var. tnotiis Say ( = costalis H. S.) Mexico. 



