Pomona Coi.lkc.k Joirnai, ok K.NToMoi^iY 



783 



witli iIk' lliinl (lisididnl, tip fimTffi's at the wint; iiinrKin above tlio inidcUi' of 



the fiid oT tin- wing; (liscoidals varialilc, is| iaily tlu' third disi-oidal which 



is very indistinct, soniftiincs simph-, and om <■ forked as shown in the drawintrs 

 iif the primary winirs (Fi^mrc L*4S. !t-l(i). these variations may he found <>m fho 

 same insect as !t and 10 are pairs; first diseoidal well defined and dark, hase 

 near tile middle of the sul)costal, straijfht or curves sli^fhtly inwardly; second 

 discoi(hd arises hut a short tlistance from the hase of the first, curves inwardly, 

 may 111' undulate, well defined and dark, these two discoidals arc fairly con- 

 stant; third diseoidal faint or sul)-oi)solete, simple and uiululate, onee- 

 hranchcd, (jhsolete at hjise ; if simple it is undulate and nearly parallel with 



Figure 248. Essigella californicus ( Ks>.iK) Del Giicrcio 

 1, antenna of the winded I'enialc; 2, antennae of the apterous female: 3. top view and 

 4, si<le view of the cornicle of the winRcd female; 5. tarsi of winded female; 6. 

 ventral aspect of the abdomen of the apterous female; 7 and 8, top and side view 

 of the cornicle of the apterous female; 9-16, winR;s showing difTercnces in venation 

 — 9 and 10 arc pairs fri>m two specimens. 



the stifimal vein; if once hranched the fork is usually within the hasal half of 

 tlui length, though this is variable as 11 shows the fork to be beyond the 

 middle. In 14 and 15 the two branches of the fork are visible while the vein 

 and fork are obsolete. Si'vondary — Lenfrth 2.2 mm., width 0.;j mm., dusky or 

 sub-hyaline. Subecstal wide and well defined, dark, nearly .straiffht with an 

 upward bend in the apical half, slightly undulate. i)is<'oidals well defined, 

 dusky, obsolete at bases, both arise within the basal half of the subcostal. 

 First diseoidal undulate, light at ba.se and darkens towards ai)ex ; second di.s- 

 coidal curves inwardly, beeoming darker from base towards the tip. lioth 

 di.seoidals may be nearly straight. Style — Obsolete. I'ngidiiitn — Well round- 

 ed, dusky, hairy. 



