—187— 
Prothorax with lateral tubercles. 
Honey tubes long, much dilated in the middle. .G. 3. Macrosiphum Oestl. 
Prothorax without lateral tubercles. 
Honey tubes not distinctly clavate or expanded at apex. ......--.+-4+ee5-. 3 
Honey tubes distinctly clavate........... ...G. 4. Rhopalosiphum Koch 
Honey tubes expanded at apex or trumpet mouthed.........-.-+.+.+++: 
G. 5. Megoura Buckt. 
SB Gubital vemn-qnee forked: 2... ascii dpyet tel te Stains G. 6. Toxoptera Koch 
Cubital vein twice forked. 
Honey tubes moderately long ; style much shorter than honey tubes. 
G. 7. Myzus pee 
Honey tubes short ; style as long or longer than honey tubes. .......+.-.++- 
G. 8. Hyalopterus Koch 
Honey tubes curved and usually enlarged in the middle; style very small or 
WCU log Sas Slee Deen ticne carer pte . G. 9. Drepanosiphum Koch 
4 Seventh antennal joint as long or longer than the sixth. 
Antenne not pilose. 
Honey tubes longer than thick, cylindrical ...... an G..10;, Aphis linn: 
lloneys WuesGla vatenrr. o)atars|s< ccs) 5)s sivitieiete ee ar G. 11. Siphocoryne Pass, 
SuBFAMILY II. CALLIPTERIN ZZ. 
TABLE OF GENERA. 
1 Seventh antennal joint shorter than the STU eee etn salt is. evolevo ces orauisten aickoaeen temas 3 
Seventh antennal joint as long or longer than the sixth. 
Antenne not pilose ; 7th joint longer than 6th, honey-tube: subobsolete ; cauda 
GES7, SI Se Sooo oe toca ees orem acco s G. 1. Cryptosiphum Buckt. 
Antenne pilose. 
Abdomen bare, not hairy or tuberculate.. 0... 66.5 cee eee cee eet ene: 2 
Abdomen hairy or tuberculate. 
IRGSiMtin: Giveiiear ana die peerineosone ooo NS G. 2. Chaitophorus Koch 
Rostrum long. 
Honey tubes pear-shaped ; prothorax with lateral reeth...........-++-- 
G. 3. Melanoxanthus Buckt. 
Honey tubes short, cylindrical ; prothorax without lateral teeth. 
G. 4. Pterocomma Buckt. 
Rostrum extending at least to the hind coxe .......... G. 5. Pterocallis Pass. 
Rostrum very short, stout, not extending beyond the anterior coxee : 
Ga 6: Pigchodes Ghcke 
PATTEM ANOt DILOSE me moi aieieclehctatoveis +a cn mn eINC shia > G. 7. Myzocallis Pass. 
Wings horizontal ; rostrum very short ; style enlarged at the apex... ... --.-- 
G, 8. Monellia Oestl. 
Wings deflexed ; rostrum short, seldom reaching to middle coxe, style short, 
alge” Soelo eoubio h ate e Hon Sec waa Sc . G. g. Callipterus Koch 
is) 
Los) 
SUBFAMILY II]. LACHNINZ. 
TABLE OF GENERA. 
TE Wane uO SWUMEMOW Dee cte ke cic xe, 270s waleleteletsieiae nye «sine ne Sisialele esis iieievsin = +leials 4 
Winged forms known. 
JM s\alloy 1120. C10) IN at bb iOS eRO ee Oe OE © Ch trUs COGIC OOO rena tae Eco cen cial 3 
Abdomen not woolly. 
