434 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 



Chandler. Lestage (1921, .pp. 337-339) also described the thir 

 instar larva of S. fuscata, and the anatomy of this species is treati 

 by Lampe (1911). Other larval descriptions include those b}^ Nee 

 ham (1909, p. 206) and Annandale (1900, p. 187) on Sisyra indi 

 Needham of India by Esben-Petersen (1933, pp. 628-629) on tv 

 larvae, Sisyra I and II, from Java. Navas (1925, p. 193, fig. 2 

 1935, p. 45) discussed the larva which he named "Sisyra Arndti" 

 connection with ,S'. dalii McLachlan. 



Specimens of the immature stages of two species of Sisyra and t^l 

 of Climacia have been made available for the present study. Da 

 on these specimens are given below. 



Sisyra vlcaria: two third-instar larvae, pupae (from CU, umbrct^ 

 Needham types and specimens), and cocoons (from P. J. Spangleij 

 S. fuscata: two first-instar larvae (reared by C. L. Withycombe, 1921 

 in MCZ), one cocoon (from L. F. Byars); Climacia areolaris: firs', 

 second-, and third-instar larvae, pupae (from H. P. Brown); thiri 

 instar larvae, pupae, and cocoons (from H. B. Hungerford); and ] 

 calif ornica: third-instar larvae (from H. P. Chandler). I 



Among the third-instar larvae from Hungerford are specimens t 

 C. areolaris and Sisyra from Burt and Douglas Lakes, Mich. Adul 

 of S. vicaria and C. areolaris have been examined from both thei 

 localities and of S. fuscata from around Douglas Lake. Since the tv] 

 lakes are approximately Ijo miles apart, it seems probable that tlj 

 larvae of both species of Sisyra are found in the lakes. Examinatiti 

 of the material available failed to reveal any specific differenccj 

 however. 1 



Because of certain similarities between the thu'd-instar larvae 

 S. vicaria and C. calif ornica,^ it is difficult to find satisfactory charaj 

 ters for separating this genus from Climacia with the material at han} 

 The lack of second-instar material of Sisyra has made comparison 

 this instar with Climacia impossible. Furthermore, the first-inst 

 larvae are so small that some of the characters can be seen onlj^ wi 

 a research microscope with a magnification of approximately 430) 

 Accordingly, the keys given below are not as analytical as desirablj 



Key to first-instar larvae of Sisyra and Climacia 



1. Head with vertex smoothly rounded, brown; pronotum with posterior pairi 

 setae about same distance apart as anterior pair. 



Sisyra fuscata (Fabricii 



Head with vertex less rounded, not usually brown; posterior pair of se 

 closer together than anterior pair (fig. 3, a). . Climacia areolaris (Hag 



3 From Clear Lake, Calif., the type locality of C. californica, determined by H. P. Chandler. 



