478 



Journal of Agricultural Research voi. xviii. No. 9 



Table I. — Number and percentage of males andfem,ales of various species of Lepidoptera 

 taken at a light trap, Hagerstown, Md., igi8 — Continued 



Table II gives the percentage of gravid females and shows that of 

 952 moths dissected, 736, or 77.3 per cent, were gravid, these consti- 

 tuting 23.35 P^r cent of all moths captured. Of the 1 1 genera of arctiids 

 represented, all the females of 9 genera were gravid. Among the noctu- 

 ids, gravid females made up 100 per cent in 8 genera. 



Table II. — Number and percentage of gravid f em-ale Lepidoptera taken at a light trap, 



Hagerstown, Md., igi8 



species. 



Phlegethontius ^-m,aculata 



Darapsa m.yron 



Hypoprepia miniata 



Utetheisa bella 



Ecpantheria deflorata 



Estigmene acraea 



Hyphaniria textor 



Isia isabella 



Diacrisia virginica 



Apantesis persephone 



Apantesis vittata 



Pareuchaetes ienera 



Halisidota tessellaris 



Alypia octomaculaia 



Arsilonchealbovenosa 



Polia rcnigera 



Dipterygia scabriuscula. .. 



Prodenia comm,elinae 



Prodenia orniihogalli 



Agroiis ypsilon 



N octua c-nigrum, 



Feltiaspp 



Mamestra meditata , 



Mam,estra picta 



Mamestra adjuncta 



Cirphis unipuncta 



Cirphis phragmitidicola. . . 



Meliana diffusa 



Cosmia paleacea 



Schinia marginata 



Autographa biloba 



Autographa brassicae 



Autographa simplex 



Number 

 taken. 



5 



13 

 II 



3 

 I 



20 

 2 



62 

 I 

 2 



58 

 2 



3 

 12 

 21 



154 



123 



2 



2 



2 



21 



97 

 63 



I 



17 



I 



58 



Number 

 spent. 



X 



6 

 6 



21 

 44 



13 



20 



I 



3 



I 



17 

 2 



Number 

 gravid. 



20 

 2 



50 



I 



2 



46 



2 



2 



6 

 15 



79 

 2 

 2 

 2 



13 



43 

 14 



41 

 18 



Percentage 

 gravid. 



100 

 100 

 100 

 100 



100 



100 



90 



100 



100 

 100 



80.6 

 100 

 100 



80 

 100 



67 



50 



71.4 



82.5 



64. 2 

 100 

 100 

 100 



62 



86.6 



68 



82.4 



70 

 90 



