108 MISC. PUBLICATION 42 4, U. S. DEPT. OF AGRICULTURE 



specifically identical with specimens of ilicicola from Europe. Since 

 there is no information in the original description to warrant the 

 retention of ilicis as a valid species, and since specimens from its type 

 iiost and locality belong to ilicicola, ilicis is here synonymized with 

 ilicicola. 



Habit.— Living on both surfaces of leaves. 



Test of female.— Ovoid or nearly circular, posterior end sometimes slightly 

 produced ; 1.5-2.25 mm. long- and 1.25-2 wide, or around 1.9 mm. in diameter ; 

 convex dorsally, sometimes with very faint transverse striatums ending in 

 minute tubercles in lateral area ; flat ventrally ; greenish, brownish, or rather 

 «lear yellow, transparent, smooth, shiny ; marginal filaments same color as test ; 

 larval exit narrow, elongate, in dorsal surface at margin. 



Adult female. — Similar to test in shape, 1.10-2 mm. in diameter. 



Margin : 8-shaped pores in a single row terminating around a pore's length 

 from bases of apical setae, around 10 //, long and 6 wide, usually a pore's length 

 apart ; 10-30 quinquelocular pores near point where each spiracular pore band 

 meets margin, the groups not meeting between anterior and posterior spiracular 

 pore bands, the pores as numerous as the 8-shaped pores at ends of row, usually 

 at least twice as numerous in the center of each group. 



Dorsal surface: Minute 8-shaped pores sparse; disk pores numerous; tubular 

 ducts 28 ii long. 



Ventral surface : Antenna conical, with 2 setae as long as diameter of antenna ; 

 beak with 2 pairs of setae ; spiracular bar rather broad ; 25-50 quinquelocular 

 pores extending from spiracle to body margin in an irregularly double row; 

 multilocular pores, with 10 loculi, arranged in 4 complete rows, posterior row 

 with 11-18, each of next 2 rows with 6-14, and anterior row with 2-10, a total 

 of 29-55 ; 4-8 dark-rimmed 8-shaped pores in a transverse row posterior to 

 foeak ; submarginal 8-shaped pores mostly in a single row, but usually double 

 :at posterior end. terminating near the posterior row of multilocular pores, 

 usually as numerous as marginal 8-shaped pores where row is single, and some- 

 times twice as numerous where it is double; submarginal setae in a complete 

 tow terminating near the fourth to eleventh posteriormost 8-shaped pore ; 2 pairs 

 of setae in posterior row, 1 pair in each of the other rows, and 1 pair anterior 

 to multilocular pores. 



Apex of abdomen : Lobes barely indicated ; setae, apical 64-72 n long, inter- 

 apical 8-14 n long, outer ventral 8 /.t long ; anal opening ventral, its margin 

 sclerotized, normally with 2 setae about 3.6 jx long on anterior edge. 



Second stage. — Resembling adult female, but smaller; margin with 2 or 3 

 quinquelocular pores at each spiracular pore band ; ventral surface with 8 or 9 

 quinquelocular pores in each spiracular pore band, submarginal 8-shaped pores and 

 submarginal setae very sparse ; apex of abdomen as in adult but all setae broken 

 off at base. 



Larva. — Ovoid. 



Margin : Without 8-shaped pores ; 2 pairs of setae anteriorly. 



Dorsal surface : 8-shaped pores usually lacking, but present in larvae from 

 Corsica collected in 1913, where they are arranged in a submedian row of 1-5 

 and a lateral row of 1-3, on each half of body ; disk pores in lateral area. 



Ventral surface : Antennal setae, I, 1 ; IV, 1 ; V, ; VI, 2 long, 2 stout, 2 fairly 

 stout, 2 slender ; antennal bases one-half length of antenna apart ; beak setae, 

 2 pairs at tip ; anterior spiracle with 1 trilocular and 1 quinquelocular pore, 

 posterior spiracle without pores ; leg setae, coxa 3, femur 1 on inner margin near 

 base, tarsus 1 each on inner and outer margins ; tibia one-fourth as long as tarsus ; 

 8 pairs of submarginal 8-shaped pores, none between antennae ; apparently 7 

 pairs of submarginal minute setae posterior to posterior spiracles, apparently 1 

 pair of submarginal larger setae at anterior end ; 2 pairs of setae between 

 antennae and mouth parts. 



Apex of abdomen : Lobes sometimes indicated ; setae, apical 58-72 ^ long, 

 interapical 9-12 n long, outer ventral about 5 /* long ; anal opening a narrow 

 incision in ventral surface and margin ; anal tube very short, slightly sclerotized, 

 somewhat bulbous ; anal ring slightly sclerotized, with 2 setae 6-8 ^ long. 



Test of male. — Elliptical, 1.25 mm. long, 0.75 wide ; dorsally slightly convex at 

 anterior end, almost flat at posterior end, with faint transverse stria tions and 

 with a weak median carina extending from convex area to posterior end, occasional 

 specimens also with inconspicuous curved lateral carinae extending from anterior 



