diff --git a/configure.py b/configure.py
index 41381cc4..dc6900c1 100644
--- a/configure.py
+++ b/configure.py
@@ -1000,7 +1000,7 @@ config.libs = [
             Object(Matching, "actor/ac_ins_ka.c"),
             Object(Matching, "actor/ac_ins_kabuto.c"),
             Object(NonMatching, "actor/ac_ins_kera.c"),
-            Object(NonMatching, "actor/ac_ins_mino.c"),
+            Object(Matching, "actor/ac_ins_mino.c"),
             Object(Matching, "actor/ac_ins_semi.c"),
             Object(NonMatching, "actor/ac_ins_tentou.c"),
             Object(Matching, "actor/ac_ins_tonbo.c"),
diff --git a/include/ac_ins_mino.h b/include/ac_ins_mino.h
new file mode 100644
index 00000000..ba39be44
--- /dev/null
+++ b/include/ac_ins_mino.h
@@ -0,0 +1,17 @@
+#ifndef AC_INS_SEMI_H
+#define AC_INS_SEMI_H
+
+#include "types.h"
+#include "ac_insect_h.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void aIMN_actor_init(ACTOR* actorx, GAME* game);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/include/ac_insect_h.h b/include/ac_insect_h.h
index facb2ba6..f2145d55 100644
--- a/include/ac_insect_h.h
+++ b/include/ac_insect_h.h
@@ -186,6 +186,16 @@ typedef struct {
     aINS_overlay_entry_c entries[3];
 } aINS_overlay_c;
 
+enum {
+    aINS_PL_ACT_NONE,
+    aINS_PL_ACT_REFLECT_AXE,
+    aINS_PL_ACT_REFLECT_SCOOP,
+    aINS_PL_ACT_DIG_SCOOP,
+    aINS_PL_ACT_SHAKE_TREE,
+
+    aINS_PL_ACT_NUM
+};
+
 typedef ACTOR* (*aINS_make_insect_proc)(aINS_Init_c*, int);
 typedef void (*aINS_make_ant_proc)(aINS_Init_c*, s8, s8);
 typedef void (*aINS_dt_proc)(ACTOR*, GAME*);
diff --git a/include/audio_defs.h b/include/audio_defs.h
index 37ba5844..f31ca0b1 100644
--- a/include/audio_defs.h
+++ b/include/audio_defs.h
@@ -232,6 +232,7 @@ typedef enum audio_sound_effects {
     NA_SE_435 = 0x435,
     NA_SE_436 = 0x436,
     NA_SE_437 = 0x437,
+    NA_SE_438 = 0x438,
 
     NA_SE_KARABURI = 0x43A,
 
diff --git a/src/actor/ac_ins_dango.c b/src/actor/ac_ins_dango.c
index 9cf2a4b6..b81cb8a7 100644
--- a/src/actor/ac_ins_dango.c
+++ b/src/actor/ac_ins_dango.c
@@ -62,7 +62,7 @@ static int aIDG_check_strike_stone(aINS_INSECT_ACTOR* insect) {
     int bx, bz;
 
     ret = FALSE;
-    if ((aINS_CLIP->pl_action == 1) || (aINS_CLIP->pl_action == 2)) {
+    if ((aINS_CLIP->pl_action == aINS_PL_ACT_REFLECT_AXE) || (aINS_CLIP->pl_action == aINS_PL_ACT_REFLECT_SCOOP)) {
         mFI_Wpos2UtNum(&bx, &bz, insect->tools_actor.actor_class.world.position);
         if ((aINS_CLIP->pl_action_ut_x == bx) && (aINS_CLIP->pl_action_ut_z == bz)) {
             ret = TRUE;
diff --git a/src/actor/ac_ins_mino.c b/src/actor/ac_ins_mino.c
new file mode 100644
index 00000000..08f2163e
--- /dev/null
+++ b/src/actor/ac_ins_mino.c
@@ -0,0 +1,630 @@
+/**
+ * @file ac_ins_mino.c
+ * @brief Implements bagworm and spider behaviors.
+ * 
+ * This file handles bagworms (minomushi) and spiders, which are insects that hang from trees.
+ * They react to tree shaking and player proximity by either falling or escaping.
+ */
+
+#include "ac_ins_mino.h"
+
+#include "m_name_table.h"
+#include "m_common_data.h"
+#include "m_player_lib.h"
+
+// Actor-specific work variable getters
+#define aIMN_CURRENT_SHAKE(ins) ((ins)->s32_work0)
+#define aIMN_TREE_UNIT_X(ins) ((ins)->s32_work1)
+#define aIMN_TREE_UNIT_Z(ins) ((ins)->s32_work2)
+#define aIMN_TARGET_SHAKE(ins) ((ins)->s32_work3)
+
+// Float work variables
+#define aIMN_ANIM_TIME(ins) ((ins)->f32_work0)
+#define aIMN_SHAKE_POS_X(ins) ((ins)->f32_work1)
+#define aIMN_SHAKE_POS_Y(ins) ((ins)->f32_work2)
+#define aIMN_BASE_POS_Z(ins) ((ins)->f32_work3)
+
+enum {
+    aIMN_ACT_AVOID,
+    aIMN_ACT_LET_ESCAPE,
+    aIMN_ACT_HIDE,
+    aIMN_ACT_APPEAR,
+    aIMN_ACT_APPEAR_STOP,
+    aIMN_ACT_WAIT,
+    aIMN_ACT_DISAPPEAR,
+    aIMN_ACT_DIVE,
+    aIMN_ACT_DROWN,
+    aIMN_ACT_FALL,
+
+    aIMN_ACT_NUM
+};
+
+static void aIMN_actor_move(ACTOR* actorx, GAME* game);
+
+static void aIMN_setupAction(aINS_INSECT_ACTOR* insect, int action, GAME* game);
+static void aIMN_position_move(ACTOR* actorx);
+
+/**
+ * Initializes a bagworm or spider actor.
+ * Sets initial position, type, and starting action.
+ *
+ * @param actorx Actor to initialize
+ * @param game Current game context
+ */
+extern void aIMN_actor_init(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    int action;
+    
+    insect->bg_range = 4.0f;
+
+    switch (insect->type) {
+        case aINS_INSECT_TYPE_BAGWORM:
+            insect->item = ITM_INSECT35;
+            break;
+        case aINS_INSECT_TYPE_SPIDER:
+            insect->item = ITM_INSECT37;
+            break;
+    }
+
+    actorx->mv_proc = &aIMN_actor_move;
+    insect->insect_flags.bit_4 = FALSE;
+
+    if (actorx->actor_specific == 0) {
+        actorx->world.position.y = 5.0f + mCoBG_GetBgY_OnlyCenter_FromWpos2(actorx->world.position, -60.0f);
+        actorx->shape_info.rotation.x = DEG2SHORT_ANGLE2(47.8125f);
+        actorx->shape_info.rotation.y = DEG2SHORT_ANGLE2(180.0f);
+        actorx->world.angle.x = DEG2SHORT_ANGLE2(47.8125f);
+        xyz_t_move(&actorx->home.position, &actorx->world.position);
+        mFI_Wpos2UtNum(&aIMN_TREE_UNIT_X(insect), &aIMN_TREE_UNIT_Z(insect), actorx->world.position);
+        aIMN_BASE_POS_Z(insect) = -25.0f + actorx->world.position.z;
+        insect->move_proc = &aIMN_position_move;
+        actorx->shape_info.draw_shadow = FALSE;
+        action = aIMN_ACT_HIDE;
+    } else {
+        actorx->drawn = TRUE;
+        action = aIMN_ACT_LET_ESCAPE;
+    }
+
+    aIMN_setupAction(insect, action, game);
+}
+
+/**
+ * Checks if the tree the insect is on is being shaken.
+ *
+ * @param actorx Actor to check
+ * @return TRUE if tree is being shaken
+ */
+static int aIMN_check_shake_tree(ACTOR* actorx) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    int ret = FALSE;
+
+    if (
+        // clang-format off
+        CLIP(insect_clip)->pl_action == aINS_PL_ACT_SHAKE_TREE &&
+        CLIP(insect_clip)->pl_action_ut_x == aIMN_TREE_UNIT_X(insect) &&
+        CLIP(insect_clip)->pl_action_ut_z == aIMN_TREE_UNIT_Z(insect)
+        // clang-format on
+    ) {
+        ret = TRUE;
+    }
+
+    return ret;
+}
+
+/**
+ * Updates the insect's position while hanging/moving.
+ *
+ * @param actorx Actor to update position
+ */
+static void aIMN_position_move(ACTOR* actorx) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    s16 angleX = actorx->world.angle.x;
+    f32 counter = aIMN_ANIM_TIME(insect);
+
+    xyz_t_move(&actorx->last_world_position, &actorx->world.position);
+    chase_f(&actorx->speed, insect->target_speed, insect->speed_step * 0.5f);
+    counter += actorx->speed * 0.5f;
+    aIMN_ANIM_TIME(insect) = counter;
+    actorx->world.position.y = actorx->home.position.y + cos_s(angleX) * counter;
+    actorx->world.position.z = aIMN_BASE_POS_Z(insect) - sin_s(angleX) * counter;
+}
+
+/**
+ * Updates the shaking animation angles for the insect.
+ *
+ * @param actorx Actor to update
+ */
+static void aIMN_calc_shake_angl(ACTOR* actorx) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    s16 angleY = actorx->shape_info.rotation.y;
+    s16 current_shake = aIMN_CURRENT_SHAKE(insect);
+    s16 target_shake = aIMN_TARGET_SHAKE(insect);
+
+    if (target_shake * angleY < 0) {
+        target_shake = -(target_shake * 0.5f);
+
+        if (ABS(target_shake) < 16) {
+            target_shake = 0;
+            current_shake = 0;
+            angleY = DEG2SHORT_ANGLE2(180.0f);
+        }
+
+        aIMN_TARGET_SHAKE(insect) = target_shake;
+    }
+
+    chase_angle(&current_shake, target_shake, 16);
+    aIMN_CURRENT_SHAKE(insect) = current_shake;
+    angleY += (s16)(current_shake * 0.5f);
+    actorx->shape_info.rotation.y = angleY;
+    actorx->world.position.x = aIMN_SHAKE_POS_X(insect) - 50.0f * sin_s(angleY);
+    actorx->world.position.y = aIMN_SHAKE_POS_Y(insect) + 50.0f + 50.0f * cos_s(angleY);
+}
+
+/**
+ * Updates the twisting animation for the insect.
+ *
+ * @param actorx Actor to update
+ */
+static void aIMN_calc_twist_angl(ACTOR* actorx) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    s16 twist_angl = insect->continue_timer;
+
+    twist_angl += 0x100;
+    insect->continue_timer = twist_angl;
+    actorx->shape_info.rotation.z = (s16)(sin_s(twist_angl) * DEG2SHORT_ANGLE3(22.5f));
+}
+
+/**
+ * Checks if the tree has been cut down.
+ *
+ * @param actorx Actor to check
+ * @return TRUE if tree is cut
+ */
+static int aIMN_check_cut_tree(ACTOR* actorx) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    int ret = FALSE;
+    mActor_name_t* fg_p = mFI_GetUnitFG(actorx->home.position);
+
+    if (fg_p == NULL || IS_ITEM_TREE_STUMP(*fg_p) == TRUE) {
+        ret = TRUE;
+    }
+
+    return ret;
+}
+
+/**
+ * Checks if the insect has touched water.
+ *
+ * @param insect Insect to check
+ * @param game Current game context
+ * @return TRUE if water was touched
+ */
+static int aIMN_chk_water_attr(aINS_INSECT_ACTOR* insect, GAME* game) {
+    ACTOR* actorx = (ACTOR*)insect;
+    int ret = FALSE;
+    f32 reverse;
+    s16 angleY;
+
+    if (actorx->bg_collision_check.result.on_ground) {
+        xyz_t pos = actorx->world.position;
+
+        reverse = insect->bg_range + actorx->speed;
+        angleY = actorx->world.angle.y;
+        pos.x += reverse * sin_s(angleY);
+        pos.z += reverse * cos_s(angleY);
+        if (mCoBG_CheckWaterAttribute(mCoBG_Wpos2BgAttribute_Original(pos))) {
+            aIMN_setupAction(insect, aIMN_ACT_DIVE, game);
+            ret = TRUE;
+        }
+    }
+
+    return ret;
+}
+
+/**
+ * Calculates direction angles for movement.
+ *
+ * @param actorx Actor to update
+ */
+static void aIMN_calc_direction_angl(ACTOR* actorx) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    int wall_check;
+
+    switch (insect->type) {
+        case aINS_INSECT_TYPE_BAGWORM:
+            wall_check = mCoBG_HIT_WALL_FRONT;
+            break;
+        case aINS_INSECT_TYPE_SPIDER:
+            wall_check = mCoBG_HIT_WALL_BACK;
+            break;
+        default:
+            wall_check = mCoBG_HIT_WALL_FRONT;
+            break;
+    }
+
+    if (actorx->bg_collision_check.result.hit_wall & wall_check) {
+        int count = actorx->bg_collision_check.result.hit_wall_count;
+        int i;
+
+        if (count != 0) {
+            for (i = 0; i < count; i++) {
+                if (actorx->bg_collision_check.wall_info[i].type == mCoBG_WALL_TYPE0) {
+                    actorx->world.angle.y = DEG2SHORT_ANGLE2(90.0f) + actorx->bg_collision_check.wall_info[i].angleY;
+                    break;
+                }
+            }
+        }
+    }
+
+    switch (insect->type) {
+        case aINS_INSECT_TYPE_BAGWORM:
+            chase_angle(&actorx->shape_info.rotation.y, actorx->world.angle.y, 0x800);
+            break;
+        case aINS_INSECT_TYPE_SPIDER:
+            chase_angle(&actorx->shape_info.rotation.y, actorx->world.angle.y + DEG2SHORT_ANGLE2(-180.0f), 0x800);
+            break;
+    }
+}
+
+// Action functions
+static void aIMN_let_escape(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+
+    if (aIMN_chk_water_attr(insect, game) == FALSE) {
+        aIMN_calc_direction_angl(actorx);
+    }
+}
+
+static void aIMN_hide(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+
+    if (aIMN_check_cut_tree(actorx) == TRUE) {
+        aIMN_setupAction(insect, aIMN_ACT_FALL, game);
+    } else if (aIMN_check_shake_tree(actorx) == TRUE) {
+        aIMN_setupAction(insect, aIMN_ACT_APPEAR, game);
+    }
+}
+
+static void aIMN_appear(ACTOR* actorx, GAME* game) {
+    static f32 move_range_table[] = { -41.0f, -47.0f };
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    f32 move_range = move_range_table[insect->flag];
+
+    if (aIMN_check_cut_tree(actorx) == TRUE) {
+        aIMN_setupAction(insect, aIMN_ACT_FALL, game);
+    } else {
+        if (aIMN_ANIM_TIME(insect) < move_range) {
+            if (insect->target_speed < 0.0f && actorx->speed < 0.0f) {
+                if (actorx->speed > -2.0f) {
+                    aIMN_setupAction(insect, aIMN_ACT_APPEAR_STOP, game);
+                } else {
+                    insect->target_speed = -actorx->speed * 0.2f;
+                    insect->speed_step = 8.0f;
+                }
+            }
+        } else {
+            insect->target_speed = -12.0f;
+            insect->speed_step = 2.0f;
+        }
+
+        aIMN_calc_twist_angl(actorx);
+    }
+}
+
+static void aIMN_appear_stop(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+
+    if (aIMN_check_cut_tree(actorx) == TRUE) {
+        aIMN_setupAction(insect, aIMN_ACT_FALL, game);
+    } else {
+        if (F32_IS_ZERO(actorx->speed)) {
+            aIMN_setupAction(insect, aIMN_ACT_WAIT, game);
+        }
+
+        aIMN_calc_twist_angl(actorx);
+    }
+}
+
+static void aIMN_wait(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+
+    if (aIMN_check_cut_tree(actorx) == TRUE) {
+        actorx->scale.x = 0.01f;
+        actorx->scale.y = 0.01f;
+        aIMN_setupAction(insect, aIMN_ACT_FALL, game);
+    } else {
+        if (aIMN_check_shake_tree(actorx) == TRUE) {
+            aIMN_CURRENT_SHAKE(insect) = 0x80;
+            aIMN_TARGET_SHAKE(insect) = -0x80;
+        }
+
+        insect->timer--;
+        if (insect->timer <= 0) {
+            if (aIMN_TARGET_SHAKE(insect) == 0) {
+                actorx->scale.x = 0.01f;
+                actorx->scale.y = 0.01f;
+                aIMN_setupAction(insect, aIMN_ACT_DISAPPEAR, game);
+            } else {
+                insect->timer = 0;
+            }
+        } else {
+            static f32 scaleX_table[] = {
+                0.01f,
+                0.00875f,
+                0.01125f,
+                0.00875f,
+                0.01125f,
+                0.00875f,
+                0.01125f,
+            };
+
+            static f32 scaleY_table[] = {
+                0.01f,
+                0.01125f,
+                0.00875f,
+                0.01125f,
+                0.00875f,
+                0.01125f,
+                0.00875f,
+            };
+
+            int idx = actorx->actor_specific;
+
+            if (idx < 7) {
+                int res0 = chase_f(&actorx->scale.x, scaleX_table[idx], 0.001125f);
+                int res1 = chase_f(&actorx->scale.y, scaleY_table[idx], 0.001125f);
+
+                if ((res0 & res1) == TRUE) {
+                    actorx->actor_specific--;
+                    if (actorx->actor_specific < 0) {
+                        actorx->actor_specific = 0x133 + (s16)(60.0f * RANDOM_F(5.0f));
+                    }
+                }
+            } else {
+                actorx->actor_specific--;
+            }
+        }
+
+        aIMN_calc_shake_angl(actorx);
+        aIMN_calc_twist_angl(actorx);
+    }
+}
+
+static void aIMN_disappear(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+
+    if (aIMN_check_cut_tree(actorx) == TRUE) {
+        aIMN_setupAction(insect, aIMN_ACT_FALL, game);
+    } else {
+        if (actorx->world.position.y > actorx->home.position.y) {
+            aIMN_setupAction(insect, aIMN_ACT_HIDE, game);
+        }
+
+        aIMN_calc_twist_angl(actorx);
+    }
+}
+
+static void aIMN_dive(ACTOR* actorx, GAME* game) {
+    f32 water_y = mCoBG_GetWaterHeight_File(actorx->world.position, __FILE__, 685);
+
+    if (actorx->world.position.y <= water_y) {
+        aIMN_setupAction((aINS_INSECT_ACTOR*)actorx, aIMN_ACT_DROWN, game);
+    }
+}
+
+static void aIMN_fall(ACTOR* actorx, GAME* game) {
+    f32 bg_y = mCoBG_GetBgY_AngleS_FromWpos(NULL, actorx->world.position, 0.0f);
+
+    if (actorx->world.position.y < bg_y) {
+        actorx->world.position.y = bg_y;
+        aIMN_setupAction((aINS_INSECT_ACTOR*)actorx, aIMN_ACT_LET_ESCAPE, game);
+    }
+}
+
+// Action init functions
+static void aIMN_let_escape_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    ACTOR* playerx;
+
+    insect->life_time = 0.0f;
+    insect->alpha_time = 80;
+    insect->bg_type = aINS_BG_CHECK_TYPE_REG_NO_ATTR;
+    insect->tools_actor.actor_class.gravity = 2.0f;
+    insect->tools_actor.actor_class.max_velocity_y = -20.0f;
+    insect->tools_actor.actor_class.shape_info.rotation.x = 0;
+    insect->tools_actor.actor_class.shape_info.rotation.z = 0;
+
+    playerx = GET_PLAYER_ACTOR_GAME_ACTOR(game);
+    if (playerx != NULL) {
+        insect->tools_actor.actor_class.world.angle.y = playerx->shape_info.rotation.y + (s16)RANDOM_CENTER_F(DEG2SHORT_ANGLE2(120.0f));
+    }
+
+    switch (insect->type) {
+        case aINS_INSECT_TYPE_BAGWORM:
+            insect->target_speed = 0.75f;
+            insect->speed_step = 0.15f;
+            insect->_1E0 = 2.0f;
+            insect->tools_actor.actor_class.shape_info.rotation.y = insect->tools_actor.actor_class.world.angle.y;
+            break;
+        case aINS_INSECT_TYPE_SPIDER:
+            insect->target_speed = 1.5f;
+            insect->speed_step = 0.3f;
+            insect->_1E0 = 0.0f;
+            insect->tools_actor.actor_class.shape_info.rotation.y = insect->tools_actor.actor_class.world.angle.y + DEG2SHORT_ANGLE2(-180.0f);
+            break;
+    }
+
+    insect->insect_flags.bit_1 = TRUE;
+    insect->insect_flags.bit_2 = TRUE;
+}
+
+static void aIMN_hide_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    insect->tools_actor.actor_class.speed = 0.0f;
+    insect->target_speed = 0.0f;
+    insect->speed_step = 0.0f;
+    insect->tools_actor.actor_class.world.position.y = insect->tools_actor.actor_class.home.position.y;
+    insect->_1E0 = 1.0f;
+    insect->tools_actor.actor_class.drawn = FALSE;
+    insect->insect_flags.bit_1 = TRUE;
+}
+
+static void aIMN_appear_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    ACTOR* playerx = GET_PLAYER_ACTOR_GAME_ACTOR(game);
+
+    if (playerx != NULL) {
+        int flag;
+        f32 pos_x;
+        f32 pos_z;
+
+        if (playerx->world.position.x < insect->tools_actor.actor_class.home.position.x) {
+            pos_x = insect->tools_actor.actor_class.home.position.x + 30.0f;
+            pos_z = insect->tools_actor.actor_class.home.position.z + -18.0f;
+            aIMN_ANIM_TIME(insect) = 0.0f;
+            flag = FALSE;
+        } else {
+            pos_x = insect->tools_actor.actor_class.home.position.x - 30.0f;
+            pos_z = insect->tools_actor.actor_class.home.position.z + -25.0f;
+            insect->tools_actor.actor_class.world.position.y = (-47.0f + insect->tools_actor.actor_class.home.position.y) - -41.0f;
+            aIMN_ANIM_TIME(insect) = -6.0f;
+            flag = TRUE;
+        }
+
+        insect->tools_actor.actor_class.world.position.x = pos_x;
+        insect->tools_actor.actor_class.world.position.z = pos_z;
+        insect->flag = flag;
+    }
+
+    aIMN_BASE_POS_Z(insect) = insect->tools_actor.actor_class.world.position.z;
+    insect->tools_actor.actor_class.speed = 0.0f;
+    insect->target_speed = -20.0f;
+    insect->speed_step = 2.0f;
+    insect->tools_actor.actor_class.drawn = TRUE;
+    insect->insect_flags.bit_1 = FALSE;
+}
+
+static void aIMN_appear_stop_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    insect->speed_step = 8.0f;
+    insect->target_speed = 0.0f;
+}
+
+static void aIMN_wait_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    insect->timer = 1200;
+    insect->tools_actor.actor_class.speed = 0.0f;
+    insect->target_speed = 0.0f;
+    insect->speed_step = 0.0f;
+    insect->tools_actor.actor_class.actor_specific = 0x133 + (s16)(60.0f * RANDOM_F(5.0f));
+    aIMN_SHAKE_POS_X(insect) = insect->tools_actor.actor_class.world.position.x;
+    aIMN_SHAKE_POS_Y(insect) = insect->tools_actor.actor_class.world.position.y;
+}
+
+static void aIMN_disappear_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    insect->target_speed = 0.5f;
+    insect->speed_step = 0.025f;
+    insect->tools_actor.actor_class.shape_info.rotation.z = 0;
+}
+
+static void aIMN_dive_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    insect->target_speed = 1.5f;
+    insect->speed_step = 0.3;
+    insect->tools_actor.actor_class.speed = insect->target_speed;
+    insect->tools_actor.actor_class.position_speed.y = 8.0f;
+
+    switch (insect->type) {
+        case aINS_INSECT_TYPE_BAGWORM:
+            insect->_1E0 = 2.0f;
+            break;
+        case aINS_INSECT_TYPE_SPIDER:
+            insect->_1E0 = 0.0f;
+            break;
+    }
+
+    insect->insect_flags.bit_1 = TRUE;
+}
+
+static void aIMN_drown_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    xyz_t pos = insect->tools_actor.actor_class.world.position;
+    
+    pos.y = mCoBG_GetWaterHeight_File(pos, __FILE__, 936);
+    eEC_CLIP->effect_make_proc(eEC_EFFECT_TURI_MIZU, pos, 1, insect->tools_actor.actor_class.world.angle.y, game, EMPTY_NO, 4, 0);
+    sAdo_OngenTrgStart(NA_SE_438, &insect->tools_actor.actor_class.world.position);
+    insect->insect_flags.bit_1 = TRUE;
+    insect->insect_flags.destruct = TRUE;
+    insect->tools_actor.actor_class.shape_info.draw_shadow = FALSE;
+}
+
+static void aIMN_fall_init(aINS_INSECT_ACTOR* insect, GAME* game) {
+    insect->tools_actor.actor_class.gravity = 2.0f;
+    insect->tools_actor.actor_class.max_velocity_y = -20.0f;
+    insect->tools_actor.actor_class.shape_info.rotation.z = 0;
+    insect->move_proc = CLIP(insect_clip)->position_move_proc;
+    insect->tools_actor.actor_class.drawn = TRUE;
+
+    switch (insect->type) {
+        case aINS_INSECT_TYPE_BAGWORM:
+            insect->_1E0 = 2.0f;
+            break;
+        case aINS_INSECT_TYPE_SPIDER:
+            insect->_1E0 = 0.0f;
+            break;
+    }
+}
+
+typedef void (*aIMN_INIT_PROC)(aINS_INSECT_ACTOR* insect, GAME* game);
+
+/**
+ * Sets up a new action state for the insect.
+ *
+ * @param insect Insect to update
+ * @param action New action to perform
+ * @param game Current game context
+ */
+static void aIMN_setupAction(aINS_INSECT_ACTOR* insect, int action, GAME* game) {
+    static aIMN_INIT_PROC init_proc[] = {
+        (aIMN_INIT_PROC)none_proc1,
+        aIMN_let_escape_init,
+        aIMN_hide_init,
+        aIMN_appear_init,
+        aIMN_appear_stop_init,
+        aIMN_wait_init,
+        aIMN_disappear_init,
+        aIMN_dive_init,
+        aIMN_drown_init,
+        aIMN_fall_init,
+    };
+
+    static aINS_ACTION_PROC act_proc[] = {
+        (aINS_ACTION_PROC)none_proc1,
+        aIMN_let_escape,
+        aIMN_hide,
+        aIMN_appear,
+        aIMN_appear_stop,
+        aIMN_wait,
+        aIMN_disappear,
+        aIMN_dive,
+        (aINS_ACTION_PROC)none_proc1,
+        aIMN_fall,
+    };
+
+    insect->action = action;
+    insect->action_proc = act_proc[action];
+    init_proc[action](insect, game);
+}
+
+/**
+ * Main movement update function for bagworm/spider actors.
+ * Handles state changes and updates current behavior.
+ *
+ * @param actorx Actor to update
+ * @param game Current game context
+ */
+static void aIMN_actor_move(ACTOR* actorx, GAME* game) {
+    aINS_INSECT_ACTOR* insect = (aINS_INSECT_ACTOR*)actorx;
+    u32 catch_label = mPlib_Get_item_net_catch_label();
+
+    if (catch_label == (u32)actorx) {
+        insect->alpha0 = 255;
+        insect->tools_actor.actor_class.shape_info.rotation.y = DEG2SHORT_ANGLE2(180.0f);
+        aIMN_setupAction(insect, aIMN_ACT_LET_ESCAPE, game);
+    } else {
+        insect->action_proc(actorx, game);
+    }
+}
diff --git a/src/bg_item/bg_item_common.c_inc b/src/bg_item/bg_item_common.c_inc
index 5902491d..08f5cf9b 100644
--- a/src/bg_item/bg_item_common.c_inc
+++ b/src/bg_item/bg_item_common.c_inc
@@ -1091,7 +1091,7 @@ static int BIT_actor_tree_cutcount_check(GAME* game, int ut_x, int ut_z) {
 static void bg_item_tree_fruit_drop(mActor_name_t fg_item, int ut_x, int ut_z, xyz_t* drop_pos) {
     if (fg_item == TREE || fg_item == CEDAR_TREE || fg_item == GOLD_TREE) {
         if (Common_Get(clip).insect_clip != NULL && Common_Get(clip).insect_clip->set_pl_act_tim_proc != NULL) {
-            Common_Get(clip).insect_clip->set_pl_act_tim_proc(4, ut_x, ut_z);
+            Common_Get(clip).insect_clip->set_pl_act_tim_proc(aINS_PL_ACT_SHAKE_TREE, ut_x, ut_z);
         }
     } else if (fg_item == TREE_BEES || fg_item == CEDAR_TREE_BEES || fg_item == GOLD_TREE_BEES) {
         ACTOR* actor;
diff --git a/src/game/m_player_main_dig_scoop.c_inc b/src/game/m_player_main_dig_scoop.c_inc
index 79d62ab5..b63a49f5 100644
--- a/src/game/m_player_main_dig_scoop.c_inc
+++ b/src/game/m_player_main_dig_scoop.c_inc
@@ -183,7 +183,7 @@ static void Player_actor_informed_insects_Dig_scoop(ACTOR* actor) {
         xyz_t* pos = &main_scoop->target_pos;
 
         mFI_Wpos2UtNum(&ut_x, &ut_z, *pos);
-        Common_Get(clip).insect_clip->set_pl_act_tim_proc(3, ut_x, ut_z);
+        Common_Get(clip).insect_clip->set_pl_act_tim_proc(aINS_PL_ACT_DIG_SCOOP, ut_x, ut_z);
     }
 }
 
diff --git a/src/game/m_player_main_reflect_axe.c_inc b/src/game/m_player_main_reflect_axe.c_inc
index 713c04a7..d2bdb93e 100644
--- a/src/game/m_player_main_reflect_axe.c_inc
+++ b/src/game/m_player_main_reflect_axe.c_inc
@@ -159,7 +159,7 @@ static void Player_actor_informed_insects_Reflect_axe(ACTOR* actor, mPlayer_main
             int ut_z;
 
             mFI_Wpos2UtNum(&ut_x, &ut_z, main_axe->axe_common.target_pos);
-            Common_Get(clip).insect_clip->set_pl_act_tim_proc(1, ut_x, ut_z);
+            Common_Get(clip).insect_clip->set_pl_act_tim_proc(aINS_PL_ACT_REFLECT_AXE, ut_x, ut_z);
         }
     }
 }
diff --git a/src/game/m_player_main_reflect_scoop.c_inc b/src/game/m_player_main_reflect_scoop.c_inc
index 2a1db529..1dd418a5 100644
--- a/src/game/m_player_main_reflect_scoop.c_inc
+++ b/src/game/m_player_main_reflect_scoop.c_inc
@@ -227,7 +227,7 @@ static void Player_actor_informed_insects_Reflect_scoop(ACTOR* actor) {
         xyz_t pos = main_scoop->target_pos;
 
         mFI_Wpos2UtNum(&ut_x, &ut_z, pos);
-        Common_Get(clip).insect_clip->set_pl_act_tim_proc(2, ut_x, ut_z);
+        Common_Get(clip).insect_clip->set_pl_act_tim_proc(aINS_PL_ACT_REFLECT_SCOOP, ut_x, ut_z);
     }
 }