THECLA. 



357 



termination of the first median nervule, and a small anal lobe ; costal nervure much arched 

 at base ; first subcostal nervule originating some distance before the apex of the cell ; disco- 

 cellular nervules concave, discoidal nervule from their point of junction ; second median 

 nervule originating just before the end of the cell; internal nervure very sinuous. 

 " Antetmm short, not half the length of the costa of the fore wing, with a gradually formed 

 elongated club. 



" PaljH somewhat short, oblic|uely porrected, second joint bristly beneath, third joint naked. 

 " Eyes hairy. 



" Legs short, scaly." (de Niceville, I. c.) 



Thecla spini. 



Papilio spini, AVien. Verz. p. 186 (1776) ; Hubner, Eur. Schmett. i. figs. 376, 377. 

 Thecla spini, Lang, Butt. Eur. p. 76, pi. xvii. fig. 2 (1884). 

 Thecla spini, var. latior, Fixseu, Rom. sur Lep. iii. p. 271 (1887). 



" Expands 1*18 to 1-40 inch. The wings are brown on the upper surface. The hind wings 

 distinctly tailed. The male has one or two small orange spots near the anal angle of the 

 hind wings. The female is larger and lighter in colour than the male, and has a large 

 indistiuct lighter patch on the fore wings, and a row of orange spots on the hind margin of 

 the hind wings extending from the anal angle. The underside is brownish grey ; the fore 

 wings have a distinct white line beginning on the costa at a point which is distant from the 

 hind margin by a space equal to a fourth of the width of the wing. The hind wings have a 

 white line running from about the middle of the costa to the inner margin, taking near the 

 anal angle an upward and then downward direction, so as to give it somewhat of a W-shape. 

 Along the hind margin is a row of orange spots, and near the anal angle, and filling up the 

 whole distance between that point and the tail, is a patch of light blue. 



" Larva light green, with two yellowish streaks on the sides ; on each segment is a row of oblique 

 lines of a darker green than the ground-colour ; on the dorsal surface, which has a dark 

 streak, are some pink dots. Feeds iu June on Prunus spinosa and Cratmjus oxi/acantha." 

 (Lanr/, I. c.) 



Var. latior, Fixsen. " One third larger than European T. spini. The ground-colour of the 

 upper surface is darker and more velvety, the markings on the primaries of the female more 

 distinct and broader ; the marginal band of the secondaries sharper. On the under surface 

 the colour is also darker than in the type ; the white band on the primaries is more curved 

 towards the inner margin, and the band on the secondaries has the W towards anal angle 

 less clearly defined ; the blue on the outer margin in cell 2 is darker, and this colour extends 

 upwards between two rows of black spots ; the rusty-brown band is broader and brighter." 



Fixsen states that typical T. spini occurs commonly at Pung-tung, Corea, 

 and that the two specimens which he describes as var. latior are also from 

 that locality. 



Staudinger (Rom. sur Lep. vi. p, 147) records both forms from Amurland, 

 and says that Hertz took var. latior in North China. 



3b 



