NO. 6 RICHARDS : NOCTUOID MOTHS 239 



Prodenia dolichos (Fabr.) 



Charles Island ; 1934 ; H. Wfttmer. 1$ 



This is the first record of this species from the Galapagos Islands. A 

 distinctive and unmistakable species. 



General distribution : United States to Argentina. 



Laphygma roseae (Schaus), new combination 



Trachea roseae Schaus, Zoologica, 5 : 33-35, pi. 1, fig. 4, 1923. 

 James Island ; January 9, 1932 ; J. S. Garth. 1 c? 9? 



Cartago Bay, Albemarle Island; January 21, 1938; 



J. S. Garth. 1 (S 4$ 



South Seymour Island; February 18, 1933; J. S. Garth. 1$ 



Determination based on comparison with the unique male type in the 

 U.S. National Museum, the only previously known specimen. 



Male genitalia: (pi. 29, figs. 3-5) Valve divided longitudinally by 

 a line of membrane ; no corona ; slender ampulla at base connected by line 

 of sclerotinization to the heavy clasper near apex ; clavus well developed 

 (fig. 4) ; 2 membranous scale pouches from base of valve. Scaphium a 

 long sclerite forked near the base. Subscaphium strong. Vesica of aedoea- 

 gus with thousands of sm.all spines and microtrichiae arranged as figured. 



Female genitalia: (pi. 29, fig. 6) Segment VIII swollen, mem- 

 branous laterally and ventrally. Ductus bursae with the heavy sclerite at 

 the ostium covered with microtrichiae; entrance of ductus bursae into 

 bursa copulatrix scleiotinized and covered with microtrichiae (shown by 

 stipple in figure). Bursa copulatrix with one elongated patch of micro- 

 trichiae; swollen area leading to ductus seminalis heavily sclerotinized 

 and folded. 



General distribution: endemic. 



Most of the specimens of this species superficially resemble specimens 

 of Crymodes {=Sidemia, =Hadena) devastator Brace, but one of the 

 males has the characteristic appearance of a species of Laphygma except 

 for its large size. The species was described from a unique male. The 

 series now available shows definitely that there is no prothoracic tuft 

 present and an abdominal tuft only at the base of the abdomen. These 

 and all other structural characters including male and female genitalia 

 are as in the genus Laphyg?na Guenee. From the known species of 

 Laphygma^ roseae differs structurally only in having strongly serrate and 

 fasciculate antennae in the male (almost pectinate). 



The genitalia are characteristic of Laphygma and its closest relative 

 Prodenia. In fact, they are most like the genitalia of Prodenia dolichos 



