REVISION OF GENUS FURNARICOLA — CARRIKER 419 



Only sternite visible is the genital plate, covering median portion of 

 segments VI and VII ; structure and chaetotaxy of VIII distinct (see 

 fig. 26a). 



Male genitalia small; basal plate short; paramera with thickened 

 bases and long, incurving tips; endomera of usual shape (see fig. 22). 



Represented by the female holotype, the male allotype, and one 

 male paratype. 



Measurements follow next species. 



Furnaricola pitnensis, new species 



Figures Ua, 23, 24 



Holotype (and only specimen) male adult, from Synallaxis c. 

 cabanisi Berlepsch and Leverkiihn, collected by the author at Bella 

 Pampa, S. Peru, June 6, 1931 (Carriker type no. 798). 



Diagnosis: A small species with rather narrow, conical head, with 

 wide frons, rounded temples and strongly undulating occipital margin. 

 The preantennary carinae are short, blackish, and submarginal; 

 antennae unusually thick and gular sclerite of unusual shape. 



First abdominal segment very large, parallel sided, and as wide as 

 pterothorax. Male genitalia strikingly different, almost unique. 

 Paramera with basal portion wide and parallel sided, with slender, 

 curving tips arising from outer portion and with a rather long, slender 

 bifurcation on inner margin (see fig 24); endomera also long, with 

 swollen sides and wide, truncate tip. 



The only other species described in the present paper with bifurcated 

 paramera is myrmeciza, from an antbird (Formicariidae), but in my 

 first paper on the genus (Bol. Ent. Venezolana, vol. 3, no 2, pp. 83-96) 

 there are three species with bifurcated paramera, two quite similar, 

 mth the bifurcation starting near base of paramera (heterocephala and 

 laticepJmla) , one from a Furnariidae, the other from a Formicariidae. 

 The third species has a short bifurcation similar to the present species 

 and is from a Furnariidae also. 



Until much more material is available for study it is impossible to 

 assign this type of genitalia to any particular type of host. 



Measurements of F. acutifrons chocoana and F. punensis are as 

 follows : 



chocoana cf chocoana 9 punensis cf 



length ividth length. width length width 



body 1.45 — 1.78 — 1.39 — 



f frons — .070 — .087 — .108 



[temples .40 .326 .46 .37 .391 .35 



prothorax .13 .198 .14 .225 .13 .206 



pterothorax .185 .282 .217 .314 .185 .282 



abdomen .76 .37 1.09 .477 .825 .445 



basal plate .15 .065 .16 .044 



paramera .077 .066 .05 .03 



endomera .04 .09 .04 .026 



