diff --git a/gen_ziektenplagenexotengroen.py.txt b/gen_ziektenplagenexotengroen.py.txt
index d839a6ed..38112293 100644
--- a/gen_ziektenplagenexotengroen.py.txt
+++ b/gen_ziektenplagenexotengroen.py.txt
@@ -11,15 +11,15 @@ def slugify(s: str) -> str:
     return re.sub(r"[^A-Za-z]+", "_", s).strip("_").lower()
 
 layers_EPR = [
-    ("Eikenprocessierups","Eikenprocessierups aanwezig (Laag)", "Eikenprocessierups aanwezig (Laag)", "caterpillar_blue"),
-    ("Eikenprocessierups","Eikenprocessierups deels bestreden", "Eikenprocessierups deels bestreden", "tree_orange"),
-    ("Eikenprocessierups","Niet in beheergebied Gemeente Amsterdam", "Niet in beheergebied Gemeente Amsterdam", "flag_black"),
-    ("Eikenprocessierups","Eikenprocessierups aanwezig (Urgent)", "Eikenprocessierups aanwezig (Urgent)", "caterpillar_red"),
-    ("Eikenprocessierups","Eikenprocessierups gemeld", "Gemeld", "speechbubble"),
-    ("Eikenprocessierups","Eikenprocessierups bestreden", "Eikenprocessierups bestreden", "tree_green"),
-    ("Eikenprocessierups","Geen Eikenprocessierups aanwezig", "Geen Eikenprocessierups aanwezig", "tree_black"),
-    ("Eikenprocessierups","Niet bereikbaar voor bestrijding", "Niet bereikbaar voor bestrijding", "flag_red"),
-    ("Eikenprocessierups","Eikenprocessierups aanwezig (Standaard)", "Eikenprocessierups aanwezig (Standaard)", "caterpillar_orange"),
+    ("Eikenprocessierups","Eikenprocessierups aanwezig (Laag)", "Eikenprocessierups aanwezig (Laag)", "aanwezig_laag"),
+    ("Eikenprocessierups","Eikenprocessierups deels bestreden", "Eikenprocessierups deels bestreden", "deels_bestreden"),
+    ("Eikenprocessierups","Niet in beheergebied Gemeente Amsterdam", "Niet in beheergebied Gemeente Amsterdam", "niet_in_beheer"),
+    ("Eikenprocessierups","Eikenprocessierups aanwezig (Urgent)", "Eikenprocessierups aanwezig (Urgent)", "aanwezig_urgent"),
+    ("Eikenprocessierups","Eikenprocessierups gemeld", "Gemeld", "gemeld"),
+    ("Eikenprocessierups","Eikenprocessierups bestreden", "Eikenprocessierups bestreden", "bestreden"),
+    ("Eikenprocessierups","Geen Eikenprocessierups aanwezig", "Geen Eikenprocessierups aanwezig", "niet_aanwezig"),
+    ("Eikenprocessierups","Niet bereikbaar voor bestrijding", "Niet bereikbaar voor bestrijding", "niet_bereikbaar"),
+    ("Eikenprocessierups","Eikenprocessierups aanwezig (Standaard)", "Eikenprocessierups aanwezig (Standaard)", "aanwezig_standaard"),
     ("Eikenprocessierups Preventief","Eikenprocessierups Preventief", "Eikenprocessierups Preventief", "preventief"),
 
 ]
diff --git a/symbols/iconen/aanwezig_laag.svg b/symbols/iconen/aanwezig_laag.svg
new file mode 100644
index 00000000..b49a7dcb
--- /dev/null
+++ b/symbols/iconen/aanwezig_laag.svg
@@ -0,0 +1,8 @@
+<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="32" height="32" rx="16" fill="#FFE600"/>
+<path d="M14.2231 17.2792C14.6071 18.1783 15.4258 18.8396 16.3804 19.0338L16.5306 20.0019C16.7851 21.6432 15.5157 23.125 13.8547 23.125H12.5722C11.9548 23.1249 11.3771 22.8781 10.9527 22.4604C11.9097 22.2617 12.7178 21.5959 13.0982 20.6971H13.8547C14.0266 20.6971 14.1576 20.5437 14.1312 20.3739L13.9189 19.0017C13.8227 18.3808 13.9446 17.7829 14.2231 17.2792Z" fill="black"/>
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+<path d="M16.794 15.8785C18.0909 15.8786 19.2056 16.7983 19.4524 18.0715L19.5341 18.4939C19.3489 18.853 19.0661 19.1672 18.6929 19.3898C18.2546 19.6511 17.7636 19.7433 17.293 19.6896L17.069 18.5333C17.0435 18.4016 16.9281 18.3065 16.794 18.3064C16.718 18.3064 16.6405 18.3013 16.5649 18.3093C15.687 18.1454 14.969 17.4558 14.779 16.5782C15.3462 16.0642 16.0463 15.8785 16.794 15.8785Z" fill="black"/>
+</svg>
diff --git a/symbols/iconen/aanwezig_standaard.svg b/symbols/iconen/aanwezig_standaard.svg
new file mode 100644
index 00000000..423904a1
--- /dev/null
+++ b/symbols/iconen/aanwezig_standaard.svg
@@ -0,0 +1,8 @@
+<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="32" height="32" rx="16" fill="#FF9100"/>
+<path d="M14.2231 17.2792C14.6071 18.1783 15.4258 18.8396 16.3804 19.0338L16.5306 20.0019C16.7851 21.6432 15.5157 23.125 13.8547 23.125H12.5722C11.9548 23.1249 11.3771 22.8781 10.9527 22.4604C11.9097 22.2617 12.7178 21.5959 13.0982 20.6971H13.8547C14.0266 20.6971 14.1576 20.5437 14.1312 20.3739L13.9189 19.0017C13.8227 18.3808 13.9446 17.7829 14.2231 17.2792Z" fill="black"/>
+<path d="M19.9171 20.4702C20.1081 21.4546 20.9674 22.2909 21.8956 22.5954C21.4438 22.9284 20.8883 23.125 20.2913 23.125C18.9704 23.125 17.791 22.2597 17.5337 20.932L17.4396 20.4483C17.995 20.4684 18.5626 20.3374 19.0752 20.0318C19.3234 19.8838 19.5415 19.7042 19.7296 19.5029L19.9171 20.4702Z" fill="black"/>
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+</svg>
diff --git a/symbols/iconen/aanwezig_urgent.svg b/symbols/iconen/aanwezig_urgent.svg
new file mode 100644
index 00000000..b093e911
--- /dev/null
+++ b/symbols/iconen/aanwezig_urgent.svg
@@ -0,0 +1,8 @@
+<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="32" height="32" rx="16" fill="#EC0000"/>
+<path d="M14.2231 17.2792C14.6071 18.1783 15.4258 18.8396 16.3804 19.0338L16.5306 20.0019C16.7851 21.6432 15.5157 23.125 13.8547 23.125H12.5722C11.9548 23.1249 11.3771 22.8781 10.9527 22.4604C11.9097 22.2617 12.7178 21.5959 13.0982 20.6971H13.8547C14.0266 20.6971 14.1576 20.5437 14.1312 20.3739L13.9189 19.0017C13.8227 18.3808 13.9446 17.7829 14.2231 17.2792Z" fill="white"/>
+<path d="M19.9171 20.4702C20.1081 21.4546 20.9674 22.2909 21.8956 22.5954C21.4438 22.9284 20.8883 23.125 20.2913 23.125C18.9704 23.125 17.791 22.2597 17.5337 20.932L17.4396 20.4483C17.995 20.4684 18.5626 20.3374 19.0752 20.0318C19.3234 19.8838 19.5415 19.7042 19.7296 19.5029L19.9171 20.4702Z" fill="white"/>
+<path d="M22.094 18.507C22.7567 18.6082 23.212 19.2275 23.111 19.8902L22.968 20.8255C22.9029 21.2517 22.7395 21.6412 22.5047 21.9745C21.5521 21.8376 20.7803 21.0973 20.6167 20.1346L20.7108 19.524C20.812 18.8613 21.4313 18.4059 22.094 18.507Z" fill="white"/>
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+</svg>
diff --git a/symbols/iconen/bestreden.svg b/symbols/iconen/bestreden.svg
new file mode 100644
index 00000000..1346682e
--- /dev/null
+++ b/symbols/iconen/bestreden.svg
@@ -0,0 +1,6 @@
+<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="32" height="32" rx="16" fill="#00A03C"/>
+<path d="M18.25 13.75H16V12.25H18.25V13.75Z" fill="white"/>
+<path d="M16 12.25H13.75V10.75H16V12.25Z" fill="white"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M22 16.75H11.5V24.25H10V7.75H22V16.75ZM13.75 10.75H11.5V12.25H13.75V13.75H11.5V15.25H13.75V13.75H16V15.25H18.25V13.75H20.5V12.25H18.25V10.75H20.5V9.25H18.25V10.75H16V9.25H13.75V10.75Z" fill="white"/>
+</svg>
diff --git a/symbols/iconen/caterpillar_blue.svg b/symbols/iconen/caterpillar_blue.svg
deleted file mode 100644
index 4a881ef6..00000000
--- a/symbols/iconen/caterpillar_blue.svg
+++ /dev/null
@@ -1,48 +0,0 @@
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diff --git a/symbols/iconen/caterpillar_orange.svg b/symbols/iconen/caterpillar_orange.svg
deleted file mode 100644
index bba0a286..00000000
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diff --git a/symbols/iconen/caterpillar_red.svg b/symbols/iconen/caterpillar_red.svg
deleted file mode 100644
index 25844d31..00000000
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diff --git a/symbols/iconen/deels_bestreden.svg b/symbols/iconen/deels_bestreden.svg
new file mode 100644
index 00000000..4b6dfdf1
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diff --git a/symbols/iconen/flag-svgrepo-com.svg b/symbols/iconen/flag-svgrepo-com.svg
deleted file mode 100644
index c85aee01..00000000
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deleted file mode 100644
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diff --git a/symbols/iconen/gemeld.svg b/symbols/iconen/gemeld.svg
new file mode 100644
index 00000000..f2e77bc5
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+++ b/symbols/iconen/gemeld.svg
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diff --git a/symbols/iconen/niet_aanwezig.svg b/symbols/iconen/niet_aanwezig.svg
new file mode 100644
index 00000000..731476f1
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deleted file mode 100644
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diff --git a/symbols/iconen/tree_orange.svg b/symbols/iconen/tree_orange.svg
deleted file mode 100644
index 0a3143ac..00000000
--- a/symbols/iconen/tree_orange.svg
+++ /dev/null
@@ -1,3 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
-<svg width="800px" height="800px" viewBox="0 0 1024 1024" class="icon"  version="1.1" xmlns="http://www.w3.org/2000/svg"><path d="M761.425982 323.287009c-17.015106-174.791541-107.504532-229.703927-242.851964-229.703927s-225.836858 55.685801-242.851964 229.703927c-11.601208 116.785498-111.371601 174.791541-64.193353 273.78852 42.537764 88.942598 126.839879 139.214502 307.045317 139.214501 180.205438 0 263.734139-49.498489 307.045317-139.214501 47.178248-98.996979-52.592145-157.003021-64.193353-273.78852z" fill="#ff8000" /><path d="M696.459215 472.555891c-20.882175-7.734139-37.123867 54.138973-58.779457 81.208459-18.561934 22.429003-42.537764 24.749245-75.021148 24.749245-2.320242-46.404834-4.640483-92.036254-6.960725-133.800604 37.897281-1.546828 59.55287-10.054381 75.021148-27.8429 18.561934-20.882175 37.123867-92.809668 18.561934-98.223565-17.78852-5.413897-27.069486 44.084592-42.537765 63.419939-13.148036 16.241692-30.936556 15.468278-54.138972 15.468278-3.093656-47.951662-5.413897-87.39577-8.507553-113.691843-2.320242-23.975831-11.601208-30.163142-26.296073-30.163142-13.92145 0-23.975831 6.187311-26.296072 30.163142-3.867069 37.123867-7.734139 102.864048-12.374623 178.658611-21.655589 0.773414-38.670695 0.773414-51.045317-15.468278-15.468278-19.335347-23.975831-68.833837-42.537764-63.41994-17.78852 5.413897 0 77.34139 18.561933 98.223565 15.468278 17.78852 36.350453 26.296073 71.927493 27.8429-2.320242 43.311178-4.640483 88.942598-6.187311 133.800605-30.936556 0-54.912387-2.320242-71.927493-24.749245-21.655589-27.069486-37.123867-88.942598-58.779456-81.208459-20.882175 7.734139 3.093656 99.770393 28.616314 129.16012 21.655589 24.749245 48.725076 36.350453 99.770393 38.670695-6.187311 143.854985-10.827795 266.054381-10.827795 266.054381H579.673716s-6.187311-160.870091-13.92145-331.021148c52.592145-2.320242 79.661631-13.92145 102.090634-38.670695 25.522659-29.389728 50.271903-121.425982 28.616315-129.160121" fill="#65320b" /></svg>
diff --git a/symbols/symbollist.txt b/symbols/symbollist.txt
index 7cf2e038..f18d90d4 100644
--- a/symbols/symbollist.txt
+++ b/symbols/symbollist.txt
@@ -557,65 +557,65 @@ END
 
 # From https://www.svgrepo.com/svg/481465/caterpillar, public domain
 SYMBOL
-  NAME "caterpillar_orange"
+  NAME "aanwezig_standaard"
   TYPE SVG
-  IMAGE "iconen/caterpillar_orange.svg"
+  IMAGE "iconen/aanwezig_standaard.svg"
 END
 
 # From https://www.svgrepo.com/svg/481465/caterpillar, public domain
 SYMBOL
-  NAME "caterpillar_blue"
+  NAME "aanwezig_laag"
   TYPE SVG
-  IMAGE "iconen/caterpillar_blue.svg"
+  IMAGE "iconen/aanwezig_laag.svg"
 END
 
 # From https://www.svgrepo.com/svg/481465/caterpillar, public domain
 SYMBOL
-  NAME "caterpillar_red"
+  NAME "aanwezig_urgent"
   TYPE SVG
-  IMAGE "iconen/caterpillar_red.svg"
+  IMAGE "iconen/aanwezig_urgent.svg"
 END
 
 # From https://www.svgrepo.com/svg/475459/tree, CC0.
 SYMBOL
-  NAME "tree_black"
+  NAME "niet_aanwezig"
   TYPE SVG
-  IMAGE "iconen/tree_black.svg"
+  IMAGE "iconen/niet_aanwezig.svg"
 END
 
 # From https://www.svgrepo.com/svg/475459/tree, CC0.
 SYMBOL
-  NAME "tree_green"
+  NAME "bestreden"
   TYPE SVG
-  IMAGE "iconen/tree_green.svg"
+  IMAGE "iconen/bestreden.svg"
 END
 
 # From https://www.svgrepo.com/svg/475459/tree, CC0.
 SYMBOL
-  NAME "tree_orange"
+  NAME "deels_bestreden"
   TYPE SVG
-  IMAGE "iconen/tree_orange.svg"
+  IMAGE "iconen/deels_bestreden.svg"
 END
 
 # From svgrepo.com.
 SYMBOL
-  NAME "flag_black"
+  NAME "niet_in_beheer"
   TYPE SVG
-  IMAGE "iconen/flag-svgrepo-com.svg"
+  IMAGE "iconen/niet_in_beheer.svg"
 END
 
 # From svgrepo.com.
 SYMBOL
-  NAME "flag_red"
+  NAME "niet_bereikbaar"
   TYPE SVG
-  IMAGE "iconen/flag_red.svg"
+  IMAGE "iconen/niet_bereikbaar.svg"
 END
 
 # From https://www.svgrepo.com/svg/475459/tree, public domain.
 SYMBOL
-  NAME "speechbubble"
+  NAME "gemeld"
   TYPE SVG
-  IMAGE "iconen/speech-bubble-6-svgrepo-com.svg"
+  IMAGE "iconen/gemeld.svg"
 END
 
 #=================================================================
diff --git a/ziektenplagenexotengroen.map b/ziektenplagenexotengroen.map
index 63c62fe0..bc6a063f 100644
--- a/ziektenplagenexotengroen.map
+++ b/ziektenplagenexotengroen.map
@@ -36,7 +36,7 @@ MAP
       NAME 'Eikenprocessierups aanwezig (Laag)'
       EXPRESSION 'Eikenprocessierups aanwezig (Laag)'
       STYLE
-        SYMBOL 'caterpillar_blue'
+        SYMBOL 'aanwezig_laag'
         SIZE 20
       END
     END
@@ -64,7 +64,7 @@ MAP
       NAME 'Eikenprocessierups deels bestreden'
       EXPRESSION 'Eikenprocessierups deels bestreden'
       STYLE
-        SYMBOL 'tree_orange'
+        SYMBOL 'deels_bestreden'
         SIZE 20
       END
     END
@@ -92,7 +92,7 @@ MAP
       NAME 'Niet in beheergebied Gemeente Amsterdam'
       EXPRESSION 'Niet in beheergebied Gemeente Amsterdam'
       STYLE
-        SYMBOL 'flag_black'
+        SYMBOL 'niet_in_beheer'
         SIZE 20
       END
     END
@@ -120,7 +120,7 @@ MAP
       NAME 'Eikenprocessierups aanwezig (Urgent)'
       EXPRESSION 'Eikenprocessierups aanwezig (Urgent)'
       STYLE
-        SYMBOL 'caterpillar_red'
+        SYMBOL 'aanwezig_urgent'
         SIZE 20
       END
     END
@@ -148,7 +148,7 @@ MAP
       NAME 'Eikenprocessierups gemeld'
       EXPRESSION 'Gemeld'
       STYLE
-        SYMBOL 'speechbubble'
+        SYMBOL 'gemeld'
         SIZE 20
       END
     END
@@ -176,7 +176,7 @@ MAP
       NAME 'Eikenprocessierups bestreden'
       EXPRESSION 'Eikenprocessierups bestreden'
       STYLE
-        SYMBOL 'tree_green'
+        SYMBOL 'bestreden'
         SIZE 20
       END
     END
@@ -204,7 +204,7 @@ MAP
       NAME 'Geen Eikenprocessierups aanwezig'
       EXPRESSION 'Geen Eikenprocessierups aanwezig'
       STYLE
-        SYMBOL 'tree_black'
+        SYMBOL 'niet_aanwezig'
         SIZE 20
       END
     END
@@ -232,7 +232,7 @@ MAP
       NAME 'Niet bereikbaar voor bestrijding'
       EXPRESSION 'Niet bereikbaar voor bestrijding'
       STYLE
-        SYMBOL 'flag_red'
+        SYMBOL 'niet_bereikbaar'
         SIZE 20
       END
     END
@@ -260,7 +260,7 @@ MAP
       NAME 'Eikenprocessierups aanwezig (Standaard)'
       EXPRESSION 'Eikenprocessierups aanwezig (Standaard)'
       STYLE
-        SYMBOL 'caterpillar_orange'
+        SYMBOL 'aanwezig_standaard'
         SIZE 20
       END
     END