EMBIOPTERA OF THE NEW WOKLD — ROSS 417 



gite rounded caudally, -witliout definite processes. Process of ninth 

 sternite simple. Composite left paraproct and left cercus-basipodite 

 well represented, large, simple. Left cerciis not strongly clavate, 

 bearing a few large echinulations siibapically on inner side ; terminal 

 segment rather short, broad basally, distally acuminate. Right cercus 

 with terminal segment narrower than that of left cercus. Both cerci 

 with sensory setae well developed, "rosette" sockets prominent. 



Female. — Unlaiown. 



Genotype. — Microemhia rmgosifrons^ new species. 



Distiibution . — Peru. 



MICROEMBIA RUGOSIFRONS, new species 



Figures 20-22 



Male. — Color (on slide): Body, legs, and wings light tan; head 

 medium brown, mandibles 3'ellowish. Length 4.5 mm.; forewing 

 length 3.5 mm., breadth 0.9 mm. 



Head (fig. 20) short, circular — as broad across eyes as long, dorso- 

 ventral thickness unusually great ; eye interspace two eye widths wide ; 

 sides behind eyes short — one eye length long, gradually rounded be- 

 hind ; caudal margin evenly arcuate ; surface clothed with long sparse 

 setae; dorsal and ventral margins of antennal foramen extensive; 

 mentum a very small sclerite; submentum dark, broad anteriorly, 

 gradually narrowed basally, anterior margin transverse, mandibles 

 broad with apical teeth scarcely separated, greatly expanded before 

 base, base abruptly narrowed; occipital foramen rounded anteriorly. 



Terminalia (figs. 21, 22) with left hemitergite (10 L) large, dark, 

 inner margin straight, continued caudad to form inner margin of 

 straight process (10 LP), which is narrow, simple, slightly dilated 

 terminally; right hemitergite (10 R) short, caudal margin rounded 

 without a developed process but folded down and inward. Ninth 

 sternite (H) broad, quadrate, clothed with sparse, long setae, gradu- 

 ally tapered caudad to form a short, pointed process (HP). Com- 

 posite left paraproct and left cercus-basipodite (LPPT-fLCB) 

 large, elongate, rhomboid. Basal segment of left cercus (LCi) only 

 slightly clavate terminally ; echinulations large, sparse, bifid. Termi- 

 nal segment broadly attached basally, short, broad. Terminal seg- 

 ment of right cercus normally attached basally, narrower and slightly 

 longer than that of LCo. 



Female. — Unlaiown. 



Holot]/pe.— Male, on slide, U.S.N.M. No. 56043. 



Type data. — Iquitos, Peru, March-April 1931 (R. C. Shannon) 

 (USNM). 



552731—43 2 



