FRUIT FLIES OF THE GENUS DACUS. 109 



(T. B. Fletcher) ; Bangalore, on mango leaves, v . 1913 (T. B. Fletcher) ; Machavaram, 

 Godavari Dist., 26.xii.1913 {T. B. Fletcher); Coimbatore, ii. and ix.l912 {T. B. 

 Fletcher) ; Nagpur, Central India, on white gourd {Lagenaria vulgaris), 14. viii. 1909 

 (Ratiram) ; Dehra Dun, on grass, v. 1912 {Prof. A. D. Imms). 



12. Chaetodacus maculipennis, Dol. (1856). 



Bactrocera maculipennis, Bezzi, Mem. Ind. Mus., iii, 1913, p. 99, pi. viii, fig. 11. 



A very distinct species, which shows some affinity with the two preceding ones. 

 It seems to be rare in India. The supernumerary anal lobe on the wings of the male is 

 well developed. 



Coimbatore, on cholam (Andropogon sorghum), 23. ix. 1912 (T. B. FletcJier); 

 Minbu, Lower Burma, on wild vine {Vitis sp.), 6-8. viii. 1914 {T. B. Fletcher).' 



13. Chaetodacus hageni, Meij. (1911). 



Dacus hageni, De Meijere, Tijds. Entom., liv, 1911, p. 375. 



This species, described and recorded hitherto only from Sumatra, agrees with the 

 preceding one in having four scutellar bristles and a niiddle yellow stripe on the thorax, 

 but differs in having only two pairs of lower fronto-orbital bristles, two rounded 

 facial black spots, and the brown fore border of the wings dilated into a broad spot at 

 the end of the third vein. The male (hitherto undescribed) is very like the female, but 

 has the third abdominal segment ciliated, the supernumerary anal lobe not much 

 developed but distinct, and the anal streak less broadened at the end ; the fourth 

 abdominal segment shows a rounded yellow spot in the black pattern on each side. 



A single male from Meiktila, Upper Burma, on gourd ICurcurbita sp., 13-15 viii - 

 19U (T.B.Fletcher). 



14. Chaetodacus cucurbitae, Coq. (1899). 



Bactrocera cucurbitae, Bezzi, Mem, Ind. Mus., iii, 1913, p. 96, pi. viii, fig. 7. 



Dacus cucurbitae, Lefroy, Indian Insect Life, 1909, p. 633, fig. 418. 



This large and characteristic species is common in India and Burma, and very 

 variable. The sexual characters in the male wing are well developed. The black 

 facial spots are broad, ovate, and extended to the mouth-edge at their lower corner. 



The following variations have been observed :— (a) chaetotaxij : sometimes only 

 two pairs of orbital bristles ; (b) frontal pattern : dark spots more or less developed, 

 or even quite wanting ; (c) thoracic pattern : thorax altogether reddish, or with black 

 markings on the disk and the pleura ; middle yellow stripe broad, narrow or even 

 mdistinct ; (d) abdominal pattern : abdomen with none, or with one, or with two 

 transverse black bands ; (e) femora : entirely yellow or darkened at the end; 

 (0 ivings : anterior cross-vein not bordered with fuscous or with a narrow, or even 

 with a broad border ; posterior cross- vein broadly or narrowly bordered with fuscous. 



Dehra Dun, on grass, vii, 1912 {Prof A. D. Imms) ; Dhom, Krishna Valley, 

 2,400 ft., 29-30. iv. 1913 ; some old specimens in the Indian Museum from Poona 

 and Calcutta ; Pusa, Bihar, on parol {Trichosanthes dioica) in 3Iarch, in Cucumis 

 fruits in October, in Momordica charantia fruits in January, in pumpkin fruits 

 {Cucurbila spp.) in December, in Lujfa aegyptiaca fruits in February and in December 



