MACROGLOSSUM. 355 



top and bottom white. Length 50 mm. ; breadth 7 mm. ; 

 horn 6 mm. 



Pupa. — Not recorded. 



Habits. — Food-plant : Rubia cordifolia Linn., family 

 Rubiaceae. 



119. Macroglossum regulus (Boisd.). (Fig. 90 C, D. genitalia : 

 PI. XI, figs. 1, 2, larva). 



Macroglossa regulus, Boisduval, 1875, p. 335 (Coromandel). 

 Macroglossum regulus, Roths. & Jord., 1903, p. 633, pi. iv, fig. 11 



(6*) ; Seitz, 1929, p. 556, t. 65 e. 

 Macroglossa fervens, Butler, 1875, p. 4, pi. i, fig. 3 (Canara) ; 



Hampson, 1892, p. 112. 



Imago. — <££. Antenna long and stout. Upperside of head, 

 thorax and first three abdominal segments greenish ; large, 

 confluent, orange side -spots on segments 2 to 7 ; rest of 

 tergites deep brownish-black, base of seventh pure white, 

 tips of long scales of anal brush tawny ; side-tuft of segment 3 

 white, of 5 black with buff tip. Fore wing with two ante- 

 median lines curved basad behind, interspace black ; no 

 stigma ; first discal line thin, second widened, angulate behind 

 R 1 , the dark scaling extended along hinder side of R 1 to 

 subapical double spot, a subquadrate grey patch at proximal 

 side of these spots. Hind wing chestnut-red, not darker 

 at base, but distal margin slightly blackish, this colour not 

 forming a well-defined border. Underside of palpus nearly 

 pure white, breast and legs (posterior tarsus excluded), the 

 greater part of the first sternite and a mesial spot on the 

 second and third creamy ; wings like upperside of hind wing, 

 extreme bases maize-colour. Expanse : ^$ 36^4 mm. 



$. Tenth tergite pointed, slender at end ; sternite sub- 

 truncate, black at end. Clasper without friction-scales :; 

 harpe (fig. 90 C) slender, simple, straight, shorter than in 

 gyrans, but similar in shape. Penis-sheath (fig. 90 D) with short 

 process, denticulate at distal edge ; two obtuse internal rods. 



Hob. S. India and Ceylon. We have bred the species in 

 S. India, where it is common during the wet months above 

 1,000 feet elevation. 



Egg. — Broadly ovoid ; surface smooth and shining ; colour 

 pale green. 



Larva : — 



Final instar. Head semi-oval ; true clypeus triangular, 

 short and broad ; surface of head slightly shining and smooth 

 except for a covering of short appressed hairs ; body dull ; 

 a transverse row of minute tubercles along each secondary 

 ring, one tubercle of each row, on the dorso -lateral fine, 

 being larger than the rest ; horn covered with small tubercles ; 

 medium length, tapering evenly, nearly straight, held at an 

 angle of 45° to the body. 



2a2 



