12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



Family LIMNOPHILIDAE 

 Genus PSEUDOSTENOPHYLAX Martynov 



PSEUDOSTENOPHYLAX FUMOSUS Martynov GRAHAMI, new subspecies 



Plate 3, Figures 32 to 37 



Descri'ption. — Apical margin of anterior wings not so regularly 

 rounded as in the typical form from Ordos, the apex being somewhat 

 produced. Coloring of anterior wings is not diffuse; it can be 

 described as brown, with numerous pale irrorations ; sometimes dark 

 reticulation is distinct only along the longitudinal veins, the median 

 portions between two neighboring veins being pale. Rsi arises from 

 the discoidal cell a little earlier than in the typical form; the veins 

 Cu, A, M, R, and both main branches of Rs slenderer and somewhat 

 paler than in the typical form. Posterior wings as in the typical 

 form; the areas between A3 and jugal vein (vena arcuata) clothed, 

 in male, wnth numerous rounded scales, as in Pseudostenophylax 

 fwniosics.^ 



Male: Eighth segment as in typical form, but the posterior me- 

 dian portion of it bears numerous strong brownish hairs or spines, 

 turned mostly downward; black spinules are disposed as usual. 

 Preanal appendages pale, not projecting very much behind the 

 ninth segment. Penis large, forming an angular projection back- 

 ward, then suddenly bent to the body, truncate at its apex, if seen 

 from above. Basal portions of titillators thick, pale, and erectile; 

 distal portions chitinized, brownish, tuberculated, at their end each 

 bearing a brush of long spines, directed outward and to the body. 



Female: Females were unknown in the typical form. Anterior 

 wings grayish brown, with numerous small, rounded, pale irrora- 

 tions; shape of wings as in male; veins somewhat j^ellowish and a 

 little more slender than in male. Scales on the posterior wings 

 lacking. Abdomen brownish above, yellowish beneath. 



Seventh sternite with a transverse chitinized projection. Upper 

 side-pieces of the ninth tergite large, triangular, but rounded at 

 their hind angles ; their lower edges are almost straight ; dorsal part 

 of the ninth tergite is weak, narrow, and almost completely 

 coalesced with the tenth segment. Ventral portion of the ninth seg- 

 ment forms a broad plate, gradually tapering to its hind margin, 

 the outer angles of which are somewhat projected. Median lobe 

 of the subgenital apj)aratus small, rounded, dark, side lobes almost 

 twice as long, with obliquely truncated hind margins. Tenth seg- 



» In Ann. Mus. Zool. Acad. Sci. St. Petersburg, vol. 14. pp. 281-287, 1909, vena 

 arcuata is named Ab. 



