166 ILLINOIS BIOLOGICAL MONOGRAPHS [484 



EXPLANATION OF PLATE 



ANTENNAE, LEGS, SILK-GLANDS , 



Fig. 130 — Pamphilius sp. Metathoracic leg. 



Fig. 131 — Megaxy da major. Metathoracic leg. \ 



Fig. 132 — Macremphytus varianus. Metathoracic leg. 



Fig. 133 — Pteronidea ribesi. Mesothoracic leg. 



Fig. 134 — Neodiprion lecontei. Metathoracic leg. 



Fig. 135 — Dolerus similis. Metathoracic leg. 



Fig. 136 — Phlebatrophia mathesoni. Metathoracic leg. 



Fig. 137 — Metallus rubi. Metathoracic leg. 



Fig. 138 — Pteronidea ribesi. Mesothoracic leg. Dorsal aspect. 



Fig. 139 — Schizocerus zabriskei. Metathoracic leg. 



Fig. 140 — Kaliofenusa ulmi. Metathoracic leg. 



Fig. 141 — Caliroa cerasi. Metathoracic leg. 



Fig. 142 — Endelomyia aeihiops. Metathoracic leg. 



Fig. 143 — Megaxyela major. Antena. 



Fig. 144 — Adirus trimaculattts. Antenna. 



Fig. 145 — Schizocerus zabriskei. Antenna. 



Fig. 146 — Cephus pygmaeus. Antenna. i 



Fig. 147 — Metallus rubi. Antenna. i 



Fig. 148 — Tremex columba. Antenna. j 



Fig. 149 — Kaliofenusa ulmi. Antenna. i 



Fig. 150 — Phlebatrophia tnathesoni. Antenna. | 



Fig. 151 — Janus integer. Antenna. ] 



Fig. 152 — Hartigia cressoni. Antenna. > 



Fig. 153 — Thrinax impressatus. Antenna. I 



Fig. 154 — Pteronidea ribesi. Antenna. j 



Fig. 155 — Tremex columba. Mesothoracic spiracle. ) 



Fig. 156 — Abia americana. Silk-glands. ' 



Fig. 157 — Abia americana. Labium, hypopharynx, and portion of silk-glands, enlarged. j 



Fig. 158 — Abia americana. Lateral aspect of cephalic portion of silk-glands. 



Fig. 159 — Abia americana. Dorsal view of silk-press, hypopharynx removed. i 



Fig. 160 — Abia americana. Cephalic view of labium and hypopharynx. 



oi-od antennal segments 1, 2, 3, 4, 5, and 6 



an antacoria li labium 



crv cericos Ip labial palpus 



cw tarsal claw M arrow pointing mesad 



ex coxa sd duct of sUk-glands 



D arrow pointing dorsad sgc cells of silk-gland 



fm femur sgd small duct of silk-glands 



fp femoral process slpr silk-press 



hx hypopharynx 



