28 MORPHOLOGY AND TAXONOMY OF ADULT MALES 



times the width of the segments, especially of the terminal, becomes equal to their 

 length (e.g. E. orariensis, Text-fig. 33), giving the antennae a moniliform rather 

 than a filiform appearance ; usually 10-segmented (9-segmented only in E. buxi). 



The position of the antennal bristles (ab) of the terminal segment is slightly 

 different from that in Pseudococcidae ; sometimes all three bristles are near the 

 base of the segment (E. buxi, Text-fig. 43, C), or only the dorsal bristle preapical 

 and the other two at a greater distance from the apex (the remaining spp.). In 

 E. araucariae (Text-fig. 39, C) two additional, much smaller bristles are also present 

 on the terminal segment. 



The scape (scp) is always with 4 hair-like setae, and the pedicel (pdc) is com- 

 paratively short. The terminal segment is distinctly pear-shaped ; in some species 

 (0. agavium) its apex is conspicuously pointed. 



Thorax 



Prothorax 



The prothorax is short. The proepisternum without any ridge-like sclerotiza- 

 tions. The prosternum (stnl) is triangular, usually long but sometimes rather 

 short (G. spuria) ; the prosternal ridge (stnr) is well developed. 



The prothoracic setae : The medial pronotal, the post-tergital, the lateral pronotal 

 and the antespiracular dorsal setae are usually absent. 



Mesothorax 



The scutum (set) is comparatively short (the prescutum 1-2 times as long) and 

 evenly sclerotized throughout. The scutellum (scl) is transversely rectangular, 

 with an additional, strong scutellar ridge (sclr), obliquely traversing the scutellum 

 on each side and dividing it into three well defined triangular areas, the largest of 

 which is the median. The width of the scutellum is twice or more its length. The 

 anterior and the posterior ridges of postalare (apar & ppar) are always joined 

 anteriorly. 



The mesopleural ridge (plr2) is continuous above the coxal articulation, and the 

 basalare (bas) is comparatively stout. The later opleurite (lpl) is large, sometimes 

 with a circular or oval membranous area (e.g. E. buxi). The trochantin is absent. 



The mesothoracic setae : The postmesostigmatal (pms) and the basisternal setae 

 (stn2s) were found only in E. buxi ; the other groups of the mesothoracic setae 

 are usually present. Apart from the setae present in Pseudococcidae, few mes- 

 episternal setae (eps2s) occur in E. buxi, and a minute lateropleurital seta (lpls) on each 

 side in E. orariensis. 



Metathorax 



The suspensorial sclerites are usually present, but in 0. agavium they are missing 

 as a result of the complete absence of the hamulohalterae. The metapostnotal 

 ridge is always absent. The precoxal ridge of metathorax (pcr3) is either well 

 developed (e.g. E. araucariae) or rather weak (e.g. 0. agavium). 



