AULACASPTS (DIASPIS) EOS^E. 169 



Dlaspis rosdQ (Bouche), Douglas ; Ent. Mo. Mag., 



vol. xxiv, p. 23, 1887. 

 Aulacaspis rosds (Bouche), Cockerell; Journal Inst., 



Jamaica, vol. i, p. 180, 1893. 



Puparium of the female (PL XIV, figs. 2, 3) opaque 

 white ; subcircular, widely ovate or broadly pyriform, 

 and convex. Larval exuviae either just within the 

 margin or projecting beyond it, but when overcrowded 

 frequently subcentral ; colour pale to dusky yellow ; 

 second exuviaB yellow, orange-yellow, or yellowish 

 brown ; secretionary covering white, thin, and trans- 

 parent. Ventral scale a thin white secretion upon the 

 plant. 



Diameter 2 to 2 '50 mm. 



Puparium of second-stage female (PL XIV, fig. 5) 

 broadly pyriform, with the exuviae terminal. 



Adult female immediately prior to parturition (PL 

 XIV, fig. 4) elongate, widest in front where it is 

 broadly rounded ; segmentation unusually pronounced ; 

 free abdominal segments above with a large marginal 

 and submarginal depression. Colour dull orange- 

 crimson; pygidium bright orange. Circumgenital 

 glands covered with a patch of white secretion. Pygi- 

 dium (PL XVII, fig. 2) very large. Circumgenital 

 glands in five groups ; the anterior group clearly defined, 

 but the lateral groups are practically continuous. A 

 study of twenty -four individuals shows there is great 

 variation in the number of the spinnerets ; the anterior 

 group consists of 11 33; the anterior laterals of 17 

 -40; the posterior laterals of 14 40. Formula of 

 twelve examples : 



22 19 6, 14 15 13 32 



1722 . 3931 . 3428 . 3333 . 2426 . 2837 

 3934 . 3032 . 2427 . 4230 . 3126 . 2918 



13 33 15 14 14 15 



2327 . 2631 . 3530 . 2327 . 2225 . 1625 

 2626 . 4031 . 3829 . 2831 . 2221 . 2223 



