ARCTIIDAE AND CTENUCHIDAE FORMERLY IN AUTOMOLIS 59 



tarsal segment yellowish white with brownish grey distal band, remaining segments either 

 yellowish white (e.g. type) or pale grey but invariably with brownish grey distal band. Fore- 

 wing venation as fernandezi. Sc -f- R x of hindwing arises from or just distal to end of cell. 

 Upper surface of forewing orange-yellow; markings (see plate) weakly iridescent pale blue and 

 pale grey, edged (including costal margin in type and few other specimens) with white, and with 

 white band connecting basal and medial markings along costa. Under surface of forewing as 

 upper surface, but markings pale yellowish grey except in posterolateral region of basal markings 

 and in discocellular region of medial marking. Hindwing chiefly pale yellow; orange-yellow 

 on upper surface immediately medial (posterior) to anal vein and orange-yellow in costal area 

 of under surface. Wings without hair-pencils on androconial zones. 



$. As male, but antennae less strongly bipectinate and outer margin of forewing more 

 strongly convex. 



Forewing length: holotype £ 27-0 mm; <$ 26-0-28-5 mm; $ 29-0-30-0 mm. 



(J genitalia. Bilaterally asymmetric. Valve with two apical processes, one short and 

 heavily sclerotized, the other long and membranous. Two unequal, acuminate processes at 

 base of hood-like uncus (these processes apparently homologous with the uncus processes of 

 the other species of Emurena, and without the unusual modifications of the tegumen and vincu- 

 lum described for these other species). Apical area and left-hand side of vesica scobinate; 

 long, anterodorsal lobe of vesica with row of stout spines. 



$ genitalia. Appendix bursa opening into right-hand side of posterior part of corpus bursae. 

 Lamella postvaginalis with medial, laterally lipped, medially scobinate sulcus. 



This is a distinctively marked species not likely to be confused with the other 

 species of Emurena. So far known only from Brazil. 



Material examined. 



Automolis luridoides Rothschild, holotype <J, Brazil: Minas Gerais, Preto (BMNH). 



Brazil: i g, Sao Paulo (USNM) ; 11 <$, 3 $, Sao Paulo, Alto do Serra i-xi. 1922-1929 

 {Spitz); 2 (J, Sao Paulo, Serra do Mar, hi. 1927 {Wucherpfennig) (USNM, 1 <J); 1 <$, Espirito 

 Santo [state] (USNM) ; 1 <$, Bahia. 



REGOBARROSIA gen. n. [Gender: feminine] 

 [Automolis Hiibner sensu auct. Partim.] 

 Type-species: Automolis aureogrisea Rothschild, 1910a : 38. 



O*. Palp curved upwards to about one-third distance from labrum to antennal base; last 

 segment minute; greyish white. Antenna serrate, ciliate, dark in middle, yellow or yellowish 

 white proximad and apicad. Head mostly yellow or orange. Thorax mostly yellow or 

 orange ; mesoscutellum grey and greyish white. Tymbal organ with from 47 to 50 microtymbals. 

 Legs yellow or orange, with brown bands. Mesothoracic tibia with one pair of spurs, meta- 

 thoracic tibia with two pairs of spurs. Venation of wings as in Text-figs 17 & 18. Area of 

 overlap on under surface of forewing and upper surface of hindwing bearing zones of androconial 

 scales: large zone under forewing; smaller zone, restricted to cell, on hindwing. Abdomen 

 yellow or orange, with or without brown coloration dorsally. 



$ (known from two examples of flavescens) . As male, but outer margin of hindwing with 

 more evenly convex tornus (anal angle) and less densely setose antennae. 



<J genitalia. There are no radical differences in structure between the species of Regobarrosia. 

 See description of flavescens. The chief diagnostic features between species are the shape and 

 ornamentation of the vesica. 



$ genitalia. The genitalia of flavescens are described on page 61. The scobinate posterior 

 lobe of the corpus bursae is an unusual feature. 



