R. NEWSTEAD — NOTES ON SCALE-INSECTS (COCCIDAB). — PART I. 



69 



dissolved by the alcohol in which they were preserved. I now find that the 

 covering and ovisac together give the insect a very striking resemblance to a 

 species of Icerya, so much so that it might easily pass as such without an 

 examination of the structural characters. Maskell* describes a similar insect 

 (Dactylopius iceryoides), but this species is in many ways quite distinct from 

 D. obtusus. 



Fig. 2. — Dactylopius obtusus, Newst. 



German East Africa: Dar-es-Salaam and Tanga, vi. 1911 (Prof. ft. 

 Newstead) ; Zanzibar : Kiuugani, 1912 (Dr. W. M. Aders). 



Dr. Aders' examples were found on the leaves and fruit pedicels of the 

 mango. The pedicels submitted were completely covered on one side with the 

 Coccids. 



umhhfc^ 



ventral/ 



Fig. 3. — Dactylopius obtusus, Newst., cephalic portion of adult female : 

 «, antenna ; 6, spines ; c, spinnerets and hair. 



When passing through Dar-es-Salaam and Tanga, in June 1911, I found this 

 insect swarming on two unidentified shrubs, which were under cultivation in both 



* Trans. New Zealand Inst, xxv, p. 33 (separata), pi. vii, figs. 1-5 1891). 



