191: 



R. NEWSTEAD — SCALE INSECTS (COCCID^) 



these very prominent portions of the test bear a striking resemblance to a 

 pair of miniature shells, of the fossil genus GrypJuca ; sides bulging and 

 somewhat irregular in outline, colour sootj-crimson ; stigmatic bands pure 

 white, narrow, extending right across the broad bulging portion of the test, 

 forming four conspicuous white lines (two on either side) against the dark 

 portion of the wax. The wax immediately beneath the surface is white with 

 a faint pinkish tinge ; it contains a large percentage of water and is soft 

 and readily injured by pressure. 



Length 6 mm. ; width 6 mm. ; depth 5-7 mm. 



Adult female more or less hemispherical ; sides bulging over the margin ; 

 cephalic lobe strongly defined ; margin deeply in- 

 cised at the stigmatic areas ; caudal process rudi- 

 mentary, appearing as a minute tubercular swelling, 

 surrounding which is a very large circular area 

 of piceous chitin ; the rest of the integument 

 dull ochreous in colour, but shining and coarsely 

 wrinkled. Antenn«3 (fig. 7) of six segments, the 

 third much the longest, equaling the length of the 

 last three segments together ; there is a long, 

 slender, lateral spine on each of the fourth and fifth 

 segments ; and three similar spines also on the 

 terminal segment, one subapicai and two towards 

 the proximal end of the segment. Parastigmatic 

 glands widely separated, and forming a broad 

 band ; in structure they are simple and resemble 

 the circumgenital glands in the Diaspin^e. Stig- 

 matic spines very short and obconical ; between 

 these are a few (2-5) small spines. Ventral derm 

 studded rather sparsely with spinnerets and minute 

 spines, the former (fig. 7, a) have a distinct central ^'^' "^ --Geroi^Me, quadri- 

 , , . , . . , . J • T 1 , hneatus, Newst. ; antenna 



septum which gives these organs m certain lights 



a figure of 8 shape. 



Length 6 mm.; width 5 mm. 



This is a very singular species, distinguishable chiefly by the curiously 

 shaped test, which together with the rather singular coloration and the 

 four conspicuous white stigmatic bands will serve at once to distinguish it 

 from any of its allies. When crowded together so that the waxy tests 

 become agglomerated, the insects, collectively, very closely resemble a colony 

 of lac insects (TacJiardia laeca), though the surface of the secretionary matter 

 in the Ceroplustes presents a more uneven surface than that of the TacJiardia. 



On Anona miirieata ; Kyetume, near Kampala, Uganda, 24.xi.10 ((7. C. 

 Gowdeij, no. 467). Also on Bark-Cloth (Ficus sp.) ; Ndege, Uganda, 

 22.iv.10 (a C. <;o?67%, no. 397). 



of female. 

 b, spine. 



a, spinneret 



