NO. 2041. 



THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 599 



Described from two brachypterous males and one brachypterous 

 and fom- macropterous females from Belize, British Honduras 

 (Johnson), and three macropterous and seven brachypterous females 

 from Managua, Nicaragua (Baker). 



Type-specimen. — In collection of Pomona College. 



DICRANOTROPIS PALLIPES Van Duzee. 

 Plate 46, fig. R. 

 Pissonotus pallipes Van Duzee '97:238.— Swezey '0^:35. 



Length of body, 3.1 mm.; width of vertex, 0.20; width of frons, 

 0.28; antennae I, 0.18, II, 0.36. General color black or dark reddish 

 brown, front, vertex, legs, and sternum reddish. Body surface 

 polished. 



Similar to marginatus in vertex and frons; head relatively a Uttle 

 narrower in brachypterous forms; macropterous form with thorax 

 longer and narrower; scutellum more than twice as long as pronotum; 

 carmse more distinct on apex of head than in brachypterous forms; 

 basal joint of antennae half as long as II. White bands on elytra 

 and pronotum wanting. Pygofer of male excavated on each side 

 for reception of the anal tube processes; genital styles broad, short, 

 cultrate, finely toothed on inner margin, without median ridge. 



Kedescribed from four females and one male, all brachypterous, 

 from Greensburg, Pennsylvania (Wirtner), one macropterous male 

 from Colorado (Baker) and one macropterous female from Alabama. 

 The macropterous forms approach more closely to Megamelus. 



DICRANOTROPIS BRUNNEUS Van Duzee. 

 Plate 46, fig. K. 

 Pissonotus hrunneus Van Duzee '97:237; '05:198.— Swezey '04:35. 

 Length of body, 2.4 mm.; width of vertex, 0.18; width of frons, 0.24; 

 antennge, I, 0.24, II, 0.25. General color dark; head and thorax 

 brown to reddish brown, lighter on frons; elytra with veins whitish 

 or yellowish; abdomen black; legs brown. 



Very similar to pallipes; carinse on apex of head not entirely 

 obsolete; basal antennal joint less than half as long as II; male 

 genitalia similar to pallipes, but genital styles longer, more deeply 

 sinuate on inner margin. 



Redescribed from two males and one female (brachypterous) from 

 Greensburg, Pennsylvania (Wirtner). This is very close to pallipes, 

 and may best be distinguished from it by the male genitaUa. 



DICRANOTROPIS DORSALIS Van Diuee. 

 Pissonotus dorsalis Van Duzee '97:239. 

 Length of body, 3 mm.; width of vertex, 0.21 ; width of frons, 0.27; 

 antemi^, I, 0.13, II, 0.30. General color dirty brown, vertex some- 

 what blotched, frons lighter, clypeus dark, elytra brown with veins 

 light, legs brown with lighter areas. Body stout. 



