﻿312 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



KEY TO THE GENERA TREATED, BASED PRINCIPALLY UPON GENITALIA 



1. Female with bursa copulatrix armed internally with large circlet of clawlike 



spines, this circlet well below opening of ductus bursae (pi. 9, figs. 14, 15). 



Paracincia,^ new genus 



Female with bursa copulatrix armed internally with a small circlet of clawlike 



or thornhke spines, this circlet at or near opening of ductus bursae (pi. 7; 



pi. 8, figs. 11, 13) 2 



2. Antenna of male fihform; male with gnathos greatly reduced or absent (pi. 9, 



fig. 16); female with bursa copulatrix lacking internal circlet and with 2 



signa (pi. 9, fig. 17) Parvicincia, new genus 



Antenna of male bipectinate; male with gnathos well developed and divided 

 (pi. 6) ; female with bursa copulatrix containing internal circlet and with a 

 single signum 3 



3. Male with gnathos divided into 2 slender, smooth arms (pi. 8, figs. 10, 12); 



female with a pair of free lobes from ostium bursae plate and with a single 

 small buttonhke posterior genital plate on eighth sternum (pi. 8, figs. 11, 13). 



Cincia Walker 



Male with gnathos divided into 2 large lobelike or fingerlike denticulate arms 



(pi. 6) ; female without free lobes from ostium bursae plate and with a pair 



of posterior genital plates on eighth sternum or, if only a single plate, this 



plate not buttonhke (pi. 7) Amplicincia, new genus 



AMPLICINCIA, new genus 



Type : Cincia pallida Butler. 



Labial palpus upturned, not appressed; short or moderate, not 

 reaching vertex of head (in ventral view). 



Antenna of male bipectinate, with pectinations narrowly or broadly 

 fused at base, originating ventrally from posterior half of subsegments ; 

 pectinations shorter or longer than width of subsegments and each 

 pectination with two bristles, one subapical and the second shorter 

 and below the first. Pectinations ciliate (hairs as long as width of 

 pectination). Antenna of female filiform and gradually more slender 

 to the tip ; subsegments pubescent and each with two pairs of bristles, 

 one from near or above middle of ventrolateral margin and the second 

 just behind the first. 



Venation as described for the group. 



Male genitalia (pi. 6) with curved and hooklike uncus terminating 

 in a constricted and somewhat elongate point; gnathos present and 

 divided, forming two denticulate arms; anellus present and with a 

 ventral plate or juxta and with two small dorsal plates or with ventral 

 and dorsal plates entirely fused; vinculum subtriangular or rounded 

 and longer than wide; harpe with clavus from sacculus (although 

 clavus is sometimes greatly reduced) and with a transtilla from costa; 

 transtilla elongate and fingerlike; aedeagus somewhat imdulate and 

 armed distally mth an abruptly bent blunt point or with several large 

 teeth or spurlike points; bulbus ejaculatorius dorsally from near mid- 

 dle or from middle third of aedeagus; vesica with cornuti lacking and 

 with numerous scobinations. 



> Males unknown. 



