AMERICAN MOTHS OF THE SUBFAMILY PHTCITINAE 



95 



genital opening. Eighth-segment collar not fused 

 ventrally. 



Type localities: Orizaba, Mexico (denticosella, in 

 USNM); Juan Vifias, Costa Rica (cristalis, in BM). 



Food plant: Unknown. 



Disteibution: Mexico: Orizaba (Oct.), Misantla 

 (Aug.). Guatemala: Cayuga (Jan., Aug.), Chejel 

 (June). Costa Rica: Juan Vinas (Jan., Nov.). Co- 

 lombia: Upper Rio Negro. Venezuela: Aroa, San 

 Esteban Valley. British Guiana: Omai. Brazil: 

 Ponte Nova (Rio Xingu, Amazonas), Santos (Mar.). 



Both denticosella and cristalis were described from 

 females. The synonymy is obvious. Both Dyar and 

 Hampson had seen males many years before but evi- 

 dently overlooked them when writing their descriptions. 



Genus 51: Ancylostomia 



Venational division D. Forewing with veins 4 and 5 contiguous 

 or stalked for about one-third their lengths from cell; 3 connate 

 with 4 at base; 6 bent towards base, connate with the stalk of 

 8-9. Hind wing with veins 4 and 5 stalked to middle; 3 closely 

 approximate to the stalk of 4-5 at base; cell short. Labial palpus 

 obliquely ascending with third segment long and porrect. Uncus 

 pentagonal. Gnathos produced at apex into a pair of long, 

 flattened, pointed, contorted, bandlike projections. Female 

 with bursa copulatrix weakly sclerotized throughout; eighth- 

 segment collar modified ventrally. Eighth abdominal segment 

 of male with compound ventral tufts. 



51. Genus Ancylostomia Ragonot 



Ancylostomia Ragonot, Monograph, pt. 1, p. 567, 1893. (Type 

 of genus: Myelois stercorea Zeller.) 



Tongue well developed. Antenna of male with a 

 sinus and strong scale tuft in shaft at base, shaft other- 

 wise flattened, weakly serrate and pubescent; of female, 

 simple and pubescent. Labial palpus obliquely ascend- 

 ing, with third segment porrect; second segment long, 

 reaching well above vertex, on male hollowed to receive 

 maxillary palpus; third segment slender, acuminate, on 

 male half as long as second, on female about the same 

 length as second segment. Maxillary palpus of male 

 in the form of an aigrette ; of female, squamous. Fore- 

 wing smooth; 11 veins; vein 2 from before but near 

 lower outer angle of cell; 3 from the angle, connate with 

 4; 4 and 5 contiguous or stalked for about one-third 

 their lengths from cell ; 6 from upper angle of cell, con- 

 nate with the stalk of 8-9, bent towards base; 8 and 9 

 stalked for shghtly more than half their lengths; 10 from 

 the cell, approximate for a short distance to the stalk of 

 8-9; male without costal fold. Hind wing with vein 

 2 from before lower outer angle of cell ; 3 from the angle, 

 closely approximate to 4 at base; veins 2 and 3 very 

 long; 4 and 5 stalked to middle; 7 and 8 anastomosed or 

 contiguous for a short distance from cell (for less than 

 half their lengths); cell less than one-third (about one- 

 fourth) the length of wing; discocellular vein curved. 

 Eighth abdominal segment of male with compound, 

 ventral scale tufts. 



Male genitaha with uncus pentagonal (the sides 



parallel, the terminal margin angled). Gnathos pro- 

 duced at apex into a pair of long, flattened, sharply 

 pointed and slightly contorted, bandlike projections; 

 the lateral arms short and articulated to base of uncus. 

 Transtilla absent. Harpe elongate, slender, cucullus 

 reduced, its apex bluntly pointed; sacculus produced 

 at apex into a slender, free, curved hook. Penis armed 

 with a pair of thin, somewhat flattened and twisted 

 spines as long (or nearly as long) as aedeagus. Vincu- 

 him. shghtly longer than greatest width; terminal margin 

 broadly rounded. 



Female genitalia without signum; bursa weakly 

 sclerotized throughout; ductus bursa strongly sclero- 

 tized except for a narrow space beyond junction of 

 bursa, at junction with bursa finely ridged and spined, 

 the ridges and spines extending for a short distance into 

 bursa, at genital opening the margins of ductus fuse 

 into eighth-segment collar. Eighth-segment collar very 

 strongly sclerotized; enlarged but not fused ventrally; 

 its ventrocaudal angles produced and pointed; from its 

 ventrolateral angles a pair of invaginated sclerotized 

 pockets. 



The genus is easily identified by its pecuharly de- 

 veloped gnathos and the eighth-segment coUar of the 

 female. Its species are tropical American in distribu- 

 tion with (in the case of stercorea) a shght extension of 

 range into southern Florida. 



200. Ancylostomia stercorea (Zeller) 



Figures 295, 771 



Myelois stercorea Zeller, Isis von Oken, 1848, p. 873. 



Anerastia ignobilis Butler, Proc. Zool. Soc. London, 1878, p. 494. 



Pempelia diffissella Zeller, Horae Soc. Ent. Rossicae, vol. 16, p. 



178, 1881. 

 Ancylostomia stercorea (Zeller) Ragonot, Monograph, pt. 1, p. 



568, 1893. 



Forewing pale ocherous along the costa, through the 

 median fold and over most of the basal area; some 

 pinkish brown shading between the veins in the pale 

 areas giving the ocherous ground color a rosy tint 

 (especially on reared and fresh specimens) ; the lower 

 outer half of wing heavily shaded with brown more or 

 less dusted with black (on reared examples this area is 

 decidedly blackish brown, its inner margin obhque 

 from lower outer angle of cell to basal third of inner 

 margin) ; a distinct brown or black streak under vein 8 

 from apex about half-way to ceU and a similar longer 

 dark streak along vein 6 from terminal margin to the 

 cell; a thin whitish fine along the lower margin of cell 

 from beyond base and continuing into vein 4 for a short 

 distance; a similar shorter white fine on the subbasal 

 half of vein lb; a small black dot on the middle of the 

 white streak on vein lb and a similar black dot above 

 it on the white streak on lower margin of cell; a single, 

 large, conspicuous black discal spot at lower outer angle 

 of cell; antemedial and subterminal lines obsolete; a 

 few black dots or streaklets in outer areas about the 

 middle of veins 2, 3, and 4 and on dark specimens some 

 blackish or dark brown shading on upper and lower 



