diff --git a/1.6/1.6/Defs/AbilityDefs/ARA_Abilities.xml b/1.6/1.6/Defs/AbilityDefs/ARA_Abilities.xml
index f3dc045..c6e1339 100644
--- a/1.6/1.6/Defs/AbilityDefs/ARA_Abilities.xml
+++ b/1.6/1.6/Defs/AbilityDefs/ARA_Abilities.xml
@@ -191,6 +191,19 @@
       </li>
     </comps>
   </AbilityDef>
+  <ThingDef Name="ARA_EggSpew_Base_Proj" ParentName="BaseGrenadeProjectile" Abstract="True">
+    <thingClass>Projectile_SpawnsThing</thingClass>
+    <graphicData>
+      <texPath>ArachnaeSwarm/Building/ARA_EggSac</texPath>
+      <graphicClass>Graphic_Single</graphicClass>
+    </graphicData>
+    <projectile>
+      <damageDef>Bullet</damageDef>
+      <speed>21</speed>
+      <damageAmountBase>0</damageAmountBase>
+      <tryAdjacentFreeSpaces>true</tryAdjacentFreeSpaces>
+    </projectile>
+  </ThingDef>
   <ThingDef ParentName="ARA_EggSpew_Base_Proj">
     <defName>ARA_Proj_Tumor</defName>
     <label>阿拉克涅菌瘤</label>
diff --git a/1.6/1.6/Defs/BodyAndPartDefs/ARA_Bodyparts.xml b/1.6/1.6/Defs/BodyAndPartDefs/ARA_Bodyparts.xml
index 68c5f04..5d8f896 100644
--- a/1.6/1.6/Defs/BodyAndPartDefs/ARA_Bodyparts.xml
+++ b/1.6/1.6/Defs/BodyAndPartDefs/ARA_Bodyparts.xml
@@ -1242,6 +1242,9 @@
       <li>ARA_Psy_Source</li>
     </tags>
   </BodyPartDef>
+  <BodyPartTagDef>
+    <defName>ARA_Psy_Source</defName>
+  </BodyPartTagDef>
   <BodyPartDef>
     <defName>ARA_Pouch</defName>
     <label>蜕荚</label>