Thunder Bug

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Thunder Bug

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Here is a fishing lure so revolutionary it allows spinner fishermen to "match the hatch." From its fluttering, veined, lifelike wing to its expertly finished segmented body, the Mepps Thunder Bug looks like a bug, acts like a bug, and, to panfish and trout, is every bit as tasty as a bug.

Computer age finishes to resist chipping and peeling. Your choice of dressed or plain ultra sharp, strong treble or single hook. Mepps unsurpassed quality. Mepps Thunder Bugs... bugs, so natural, we've even given them bug names.

Thunder Bugs, the lures, not the bug, are available in size #00 through #2 making them perfect for both panfish and all sizes of stream trout. The size #2 Thunder Bug is also great for smallmouth bass and walleye.

Whether you choose to use plain or dressed Thunder Bugs is strictly a personal preference. Lure size, however, is important. The rule of thumb is use smaller lures to catch smaller fish and larger lures to catch larger fish.


Reviewer:Dustin DesRoches (Patterson Lake, Oak Burn Manitoba Canada , Manitoba, Canada)
Fish Caught:Trout, Brown - Trout, Rainbow
This lure is a trout master!! I have caught 8 monsters in the last year just with this awesome lure!
Reviewer:Dilly Vue (Taku Lake, Alaska)
Fish Caught:Trout, Rainbow
This was my first spinner I ever got....
When cast it is very light, but, no matter
you can still get 'em from short distances.

When I use salmon eggs or any live bait
nothing seems to hit, even worms.

I caught 5 smallmouth trout and 5 bigmouth trout
Everyone in facebook thinks I'm snagging, but this Thunder Bug gets me everywhere....I use size 0. :)
Reviewer:James Mengel (Lakes, Rivers, Streams, Pennsylvania)
Fish Caught:Bass, Largemouth - Bass, Smallmouth - Trout, Rainbow
This lure works perfectly in shallow streams and rivers where the current is fast and the water is clear. The fish can't resist going for this lure, it never fails. When the scent baits aren't working just pull out The Thunder Bug and watch the magic happen. This lure is a must for any species of trout; the #00 works the best in all silver.
Reviewer:Mark Jones (Helton Creek, North Carolina)
Fish Caught:Trout, Brown
These lures make up 90% of my spinning collection. These are fantastic lures that consistently provide quality/quantity. Routinely produce takes of fish 17"+ which are consider trophy size trout in this part of the country. Mixing weather conditions and times of year with these lures will produce results that typically out fish everyone else on the creek. The only bug I've not produced with is the firefly. I would love to see a damsel fly version of this with blue wings white body hint hint lol. If you never purchased one of the bugs do yourself a favor and add one to your next order.
Reviewer:Adrian Webb (Mersey River, Kimberley. Tasmania, Australia)
Fish Caught:Trout, Brown - Trout, Rainbow

At last, woke up to the sound of much needed rain and very humid conditions, some thing that I have been waiting for quite some time. After a nice bacon,eggs, mushrooms and grilled tomato breakfast that the local bakery put on for me this morning for my Birthday, then it was off to the Mersey River at Kimberley for a spin fishing session.
When I arrived it was a matter of waiting for around ten minutes while a thunder storm passed over and the rain eased off to a light drizzle. By the time I had put my waders on and set off the drizzle was gone and then the humidity really increased as the sun decided to poke it head through the clouds. This wasn't what I wanted at all, as it was supposed to stay overcast. After a 100 mtr walk to the river the clouds had covered the sun and it was back to perfect conditions for fishing once again. Started of with a Mepps # 00March Brown Bug spinner that had worked well on the Meander River last week, and I couldn't see why it would not work here either. After covering the first section of river all I could manage was a couple of follows from some small browns. This was the same over the next couple of hundred meters only difference was that I couldn't even get a follow, so it was going to be a tough day from my reckoning. Is it going to be one of those days I thought to myself, I hope not!
There was not a breathe of wind here and the long slow stretches of river were like glass with only a few rippled circles on them from small fish jumping from time to time. Seeing fish jumping is not what I wanted as when they're doing that they normally won't take a spinner. Hell it was hot on the water, and the perspiration from my forehead was causing the polaroids to mist up making it like I was fishing in thick fog. This was not how the plan was supposed to be going at all!! Decided to bypass the slower sections of river and just hit the fast water sections of the Mersey. Trouble was this area I came to didn't have that many fast water sections to it, so I only was limited to a few sections of river. Well that will just have to do as I wasn't walking back to the ''Trout Stalker 2'' and then driving some 10 kms to another area to fish as I was already hot and a little ticked off. So I'll just have to stay here and put up with it and get on with the job in hand and that's ''catch some fish.'' I'd be happy just having a hit and miss for now.
On my way to a small fast run I decided to change my spinner, and it was too be a # 00 Black Stonefly Bug this time and it worked a treat too. This small run wasn't very wide so I could work it from the river bank in which I did. Casting across the river and into a small calm piece of water on the opposite bank that had some cover from tea trees I picked up a nice fat little brown that tipped the scales at 275 gms. A quick photo and then it was released, and boy it was good to finally get a hook up when it was looking like being a day of zero's.
The next fast water was one that I have always picked up a couple of rainbows or at least a brown so I was pretty confident of adding to my tally there. After covering every part of this water all I could manage was two hit and misses, not what I was expecting at all. So it was on to the next section of fast water and this proved to be much better as I did pick up a nice plump rainbow (310 gms released) and hooked and lost three browns. So this run did prove worth while, and not before time too. The next run of fast water was around 600 � 700 mtrs further upstream and I was too hot and bothered to go all the way up there to give it a spin, so decided to make my way back to the ''Trout Stalker 2'' some 1.5 kms away. Halfway back the sun broke through and it was a wise decision in the end as well, probably the smartest one that I had made all day. The Mersey River is still very slippery and this really makes it tough going most times, and it does take it's toll on the body after a few hours in it. Or is it just me ??

River: Mersey.. Browns: 1 (275 gm released) Rainbows: 1 (310 gms released)

** Both fish caught and released were taken on a '' Mepps Thunder Bug Spinner '' **
Cheers Adrian
Reviewer:Adrian Webb (Meander River, Meander. Tasmania, Australia)
Fish Caught:Trout, Brown

Could not have asked for a better start to a spin session in the Meander River this afternoon in warm and sunny conditions. Clear water and a light Nth Easterly once again didn't stop me having a great start as I hooked and landed a small brown on the first cast into a fast water section. This little fish took the gold beaded black nymph that I had as my drop fly today. There were quite a lot of dragon flies about today so I was equipped with a #00 March Brown spinner set up below the anti-kink once again, as this spinner worked reasonably well here on the last trip. Seeing it was going to remain bright and sunny for some time I decided once again to stick with the fast water stretches of the Meander. This time of year when the weather has warmed up considerably and so too has the rivers, the trout will be found in these stretches of river. It's always a little cooler plus the water has more oxygen in it, where as the long slow flowing sections are the opposite. The long slow sections are better fished at first light when the water has cooled over night, or on dusk when the sun is not on the water. I would prefer the morning out of the two.
The next area of fast water gave up two more small browns from three hook ups, so it was looking like I was in for a very good session, hoping for a catch of at least 20 plus fish by days end. Onwards I went working my way up and into the fast water not missing even the smallest bit of water that I though would and should be holding fish. Three trout taken in a row, a hat trick of trout some thing I haven't done for quite a while now, and that 20 plus was looking good. With the sun now a little lower in the sky there was more shaded areas on the river now which was great, as not only was it better for fishing it was nice to get into it and cool of a little. The shade was covering around a third of the river so I just kept working those areas of it and finished up landing another seven browns from nine hook ups.
Over the last 600 meters of the Meander that I fished all I could manage was two hit and misses and they were the only two fish that I came across. What a fizzer this last stretch of fast water it was! To make it worse was the fact that this last stretch has always been the best to fish as it has always given up a number of fish. So what was a great start to the session early certainly didn't finish that way in the end and the 20 plus went right out the door.. but hey! That's fishing isn't it.
The best fish went 290 gms the rest of them averaged 260 gms. The Meander is really holding a large amount of small fish this season, as last season fish were averaging 360 gms plus. Rainbow trout have been few and far between too as I have only caught one so far. I feel that when the Huntsman's Lake turbine broke down last season in March causing the river level to drop so low, then with the influx of many flocks of cormorants on the river and its tributaries took its toll on the whole system.
cheers Adrian
River: Meander. Browns: 13 ( all released )
Reviewer:Adrian Webb (Meander River, Meander. Tasmania, Australia)
Fish Caught:Trout, Brown
Another 3 hours were spent on the Meander River this afternoon fishing in sunshine and a north easterly for most of it, not my favourite type of condition to fish in. Still there were several areas that had shade on it thanks to the many Eucalypts along the river and this was where the fish were holding. The river seemed a little higher today which was a good sign, because the last trip here it was way too low. Hydro must be releasing more water for irrigation purposes and I was hoping this may give the river a much needed lift for fishing. Started off in an area much further up than my last trip here and it was a stretch of river that I hadn't fished before, so I was hoping it was going to produce a few fish. So I started off with the usual black Aglia spinner that has been so successful on most of my past trips here and began to spin my way upstream working every bit of water. After spinning my way up the river for around 25 minutes all I could manage was three follows, this was not a good sign! The trout were just sitting about 50 mms back from the spinner and I tried every trick in the book to get them to strike to no avail. Slow retrieves and letting the spinner drift with the flow, a little twitch and then let the spinner drop a little before slowly winding again. Still couldn't get them to have a whack at the lure. It was now time to try another type of spinner and this time I changed to a March Brown Thunder Bug spinner in the hope this may entice them into taking the lure..
So when I moved into the next stretch of fast water I flicked the Thunder Bug spinner across to the opposite bank and into a small side pocket of water that I thought should be holding a fish. How right I was as no sooner had the spinner hit the water and after one turn of the reel it was fish on, not a big fish but at least it was a fish. Wasn't too long before I had this little brown (260 gms ) landed and then quickly released. After several more casts through this small bit of fast water without a hit, it was then on to the next section of river.
This next stretch of water had quite a few good pockets in it that I thought would hold trout and I did manage to pick up two more small browns here ( one taken on the fly dropper ), these were only around 240 gms plus I also hooked and lost one other around the same size. I had now been in the river for nearly one and a half hours now and with only three browns landed I knew it was looking to be a small reward for a lot of hard work today. But it was still enjoyable being here in a great river with beautiful surrounds I couldn't really ask for more than this, except maybe a few more fish! At least the change of spinner worked so I was still in with a chance of picking up a few more hopefully. Kept on working my way upstream for another hour and finished up catching and releasing another four small browns with the best going 270 grams. Also hooked and lost six others in that time too, and these were not big fish either. So another few hours on the Meander River did prove to be worth while once again, but one still had to work every bit of the river for success at days end even if the fish were small..
River: Meander..Browns : 7 all released 270gms)Cheers Adrian
Reviewer:Ken (San Diego Resevoirs, California)
Fish Caught:Trout, Rainbow
Black Stonefly with dressed treble - The stocked rainbows in every reservoir I've used seem to love these. Same as or better than any other lure or spoon. Outfishes bait most of the time.

Slow and steady next to the botton on 4lb test.
Reviewer:John Tedrick (Eagles Nest Wilderness Area, Never Summer WA, Colorado)
Fish Caught:Trout, Brook - Trout, Cutthroat
Fished the Thunder Bug lure for the 1st time in small waters in high country wilderness areas. It was a riot to sight fish brook trout and watch them chase this lure like a pack of puppy dogs until one would bull its way through and take it. Easily caught & released a few dozen over two days. On a second trip into Never Summer WA, Cutthroats slammed this lure and while the fish caught & released weren't high in numbers, the excitement was good. I can't wait to try this lure on larger warm water species!
Reviewer:Michael Way (Erie Canal, Fayetteville, New York)
Fish Caught:Bass, Largemouth - Bluegill (Bream, Brim) - Crappie (White) - Pickerel
On one trip I caught 5 largemouths, the biggest was 10lb, 10 bluegills, one was 9in, an 18in pickeral and a crappie. All caught on a size 0 in the Bumblebee and White Miller blade pattern.
Reviewer:Bob Hayett (North Garnett Lake, Garnett, Kansas)
Fish Caught:Bass, Largemouth - Bluegill (Bream, Brim) - Crappie (Black) - Crappie (White) - Sunfish (shellcracker)
I'm a long-time Mepps fisherman. Just recently tried the Thunder Bug line. I'm catching an astonishing number of panfish on the Cricket color (dark gray), both single and treble hooks, both plain and dressed. Can't wait to try the other colors.
Reviewer:Tj Marks (Brashears Creek Spencer County , Kentucky)
Fish Caught:Bass, Largemouth - Bass, Smallmouth - Carp - Catfish, Channel - Crappie (Black)
These lures work! Ive never had a catfish hit harder then they do with these. Cast them toward cover and let them settle before you reel. If the fish are feeding its a guaranteed strike.
Reviewer:Bob (Garnett North Lake, Kansas)
I caught numerous LARGE bluegill and green sunfish on the Cricket Thunder Bug
Reviewer:Danny (Private Pond Brenham , Texas)
Fish Caught:Bluegill (Bream, Brim) - Catfish, Channel
I used a Mepps Thunder Bug 00 Cricket color to catch 8 bluegill and 1 channel catfish. This was the best day I have ever had using an artificial lure. I tried several other Mepps Thunder Bugs in different colors, but came up empty. This 00 size allowed me to fish close to structure without hanging up in it. I will be buying more Thunder Bugs in the future. Awesome lure!
Reviewer:Adrian Webb (Leven River, Gunns Plains. TASMANIA., Australia)
Fish Caught:Trout, Brown
After a couple of good days of rain here in Northern Tasmania, I
went and fished the Leven River at Gunns Plains. The river had
risen considerably since I was here last time and oy was a real
coffee colour that was caused by the run off from the native
vegetation. I started the morning off using my favourite Gold
Black Fury spinner and caught 2 nice Brown Trout; and, had a couple of hit & misses as well. After an hour the cloud broke-up
and the sun beamed down, the trout became finiky so I changed to
the Mepps black Thunder Bug and had instant success with this
dressed treble spinner. I went on to catch another 9 well condi-
tioned Browns & hooked and lost 7 others. These Thunder Bug spinners also have had the same good results for me on many of
the other trout streams & rivers that I fish here in Tasmania.
So, to all of you spinfishers out there, make sure you have
a few Thunder Bugs with you when your out on those rivers & streams. Good luck and tight lines to you all.
Reviewer:Jimmy (Taneycomo, Roaring River SP, Missouri)
Fish Caught:Trout, Rainbow
The trout in the upper lake of Taneycomo are very smart as they see every lure in the book. I had to try something they had not seen before so I tossed the Grasshopper Thunder Bug and managed to catch 4 solid 'bows. The following day was overcast and tossed white miller and caught 3 'bows. The Grasshopper color was beat up badly but used it at Roaring River State Park and managed 9 trout. Solid lure only issue is the blade gets worn out quicker than other spinners.
Reviewer:Joe Knoernschild (Oconomowoc, WI & River, MO, Wisconsin)
Fish Caught:Bass, Largemouth - Bass, Rock - Bass, Smallmouth - Bluegill (Bream, Brim) - Crappie (White) - Pike, Northern - Sunfish (shellcracker)
This is the best lure I have ever used. I started using these on Oconomowoc River in WI. I needed something light that could work in a current with average depth of 2 feet. I fish with 00 and 0 size lures. There is nothing I have found that does a better job catching fish. Usually my first cast with one of these produces an instant fish. I have been using Thunder Bugs for over 10 years now and love them.

I was visiting WI this last week and went out on the river again. I caught 3 16" northern pike off of it. The Grasshopper color has worked best and Cricket the second. I also like the Firefly and Bumblebee.

There is no lure I would rather have with me plus they can take a beating. Buy these and you won't be disappointed.
Reviewer:Kyle Laldin (Ken Whillans, Missisauga, Canada)
Fish Caught:Pike, Northern
Hey guys I decided to buy a Thunder Bug size one in Mayfly because of all the cool features and buzz. A day later I went fishing at a pond and hooked into my first pike, I was thrilled! I was fishing for trout! I didn't think a pike would bite something so small. Thanks for the awesome product.
Reviewer:William Chalmers (Kingsbury Pond, Norfolk Massachusetts, Massachusetts)
Fish Caught:Pickerel
I got my order yesterday and in the order I got a Thunder Bug which was the size #2 Bumblebee color. This is a very hot lure. Today I went out to a small pond right next to my brothers house. I didn't think I would catch anything as I was just passing some time. I caught 3 fish on this lure. One Smallmouth bass, one sunfish and one pickeral which was 16 inches. This lure seems like it could catch anything. I found that reeling it in real slow was helpful. Great Lure. Mepps does it again.
Reviewer:Dan (Rose River Shenandoah National Park , Virginia)
Fish Caught:Trout, Brook
Today I used the ultra-light Thunderbug Grasshopper and Stonefly on native brook trout in the Shenandoah National Park. What a great pair of lures!!!! Absolutely the best summer native brook trout lure that I have found. July is a very tough time to catch native brookies in the Park, and these lures produced strike after strike.
Reviewer:Derrick Broeckel (Northern Wisconsin Lakes, Wisconsin)
Fish Caught:Bass, Rock - Bluegill (Bream, Brim) - Crappie (Black) - Crappie (White) - Perch, Yellow - Sunfish (shellcracker)
This is the best panfish lure Mepps makes especially the #00 size. I like to suspend it from a bobber and tip with a tiny piece of nightcrawler. When you shake the bobber the blade goes crazy and it brings the fish into your bait like a cat to catnip. The panfish you catch are usually bigger than with a plain hook as well. I like the Cricket color alot as well as the all silver bait.
Reviewer:Andrew (Lake In Crossplains, Texas, Texas)
Fish Caught:Bass, Largemouth - Bluegill (Bream, Brim) - Crappie (White) - Perch, White - Perch, Yellow - Sunfish (shellcracker)
The dressed Mepps Thunder Bug is an awesome lure! I was at my deer lease close to Crossplains, TX when I was catching panfish left and right! I also caught crappie and largemouth bass. When nothing is catching fish, the Mepps Thunder Bug does! If you buy this lure, it will be worth your money!!!
Reviewer:Eric Klingeman (SandyBeach Lake, Canada, Ontario, Canada)
Fish Caught:Bass, Smallmouth - Bluegill (Bream, Brim) - Perch, White - Perch, Yellow - Pike, Northern - Sunfish (shellcracker) - Trout, Brook - Trout, Brown - Trout, Rainbow - Walleye
This lure catches everything from small panfish all the way up to the big northern pike. Fish this lure everywhere you would a normal spinner.
I fished this lure and my dad fished a regular Mepps spinner and I caught 3 times as many fish as he did. This lure is the best for hatches af any sort of fly bugs, the best is the may fly hatch in Canada.
Reviewer:Matthew G. Hauge (West Coast Of Norway, Swedish Lakes & Rivers, Sweden)
Fish Caught:Grayling - Pike, Northern - Trout, Brown - Trout, Sea/Speckled
I have used the Thunder Bug spinner in several colors and sizes. The Blue Tail Fly/silver color is perfect for sea trout. If the fish are there, they take it. Also, the regular brown trout are glad to see one of these spinners. Either brown or yellow in March. I have caught 15-20 brown trout within a couple of hours fishing. A little trick to stop the spinner from twisting the line is to bend the eye 30-45 degrees. Be careful not to bend the shaft below the twisting, or you will end up with a spinner that doesn't work at all. Bending the eye down a little not only stop the lure from twisting the line, but also makes it go in the water in a S formation. The fly lies straight out behind the lure, the eye follows the line, and the body lies in a 30-45 degree angle. Some times the lure will even fish much better after performing this little trick. Some Dragon Fly nymphs have this position when swimming in the open water, or when they are ready to strike a pray.
The larger size of spinner triggers the Swedish pike to strike, as well as the European common Perch.
Reviewer:Peter Bergers (South Norway Rivers And Lakes, Norway)
Fish Caught:Bass, Smallmouth - Pike, Northern - Trout, Brown
I am not a great fan of spinners, but, for the Thunder Bug I make an exception, because, if the the Thunder Bug is not catching, the fish are not there.

Had a very good experience with Brown Trout blade in streams and lakes in south Norway. 15 Brown trout on an evening was not an exception, especially if you use the smallest size.

Good luck

Reviewer:Alex Retzloff (Adirondacks, New York)
Fish Caught:Salmon, Kokanee - Trout, Brook - Trout, Brown - Trout, Rainbow
Here is another great lure from Mepps. These little guys catch tons. They can out fish live bait on any given day and pound for pound, I can catch twice as many trout as a guy with flies can in an hour. I recommend these to anybody who sees me with them and they sometimes see me again and show me how their tackle box is now filled with them. Thanks for another great lure Mepps and countless more great fish!
Reviewer:Chad Vibostak (Chest Creek, Pennsylvania)
Fish Caught:Trout, Brown
The Thunder Bug is the most productive spinner for trout I ever used. It out fishes any other lure in my box, it continues to catch trout at a high rate. I would recommend this lure to anybody.
Reviewer:frank (, New York)
It's cool BUY IT!!!!!!
Reviewer:Kelly Humber (Milwaukee, Wisconsin)
Fish Caught:Bass, Smallmouth
This lure is absolutely unstopable. It regularly produces monster smallmouth in the Milwaukee River, and I wisely chose to take it on my recent Boundary Waters trip. There I was inundated with bass and northern that couldn't get enough of it's realism. I swear by the Thunder Bug.

Write a product testimonial and share your fishing experiences with other customers.

Fish Species

Sizes #00, #0 and #1 - Plain & Dressed

Bluegill / Sunfish / BreamCrappiePerch
Rock Bass / Goggle-EyeWhite Bass 

Sizes #0, #1 and #2 - Plain & Dressed

Arctic GraylingBrook TroutCutthroat Trout
Dolly Varden Trout  

Sizes #1 and #2 - Plain & Dressed

Arctic CharCarpRainbow Trout / Palomino Trout

Sizes #1 and #2 - Plain


Size #2 - Plain & Dressed

Brown TroutPickerelSmallmouth Bass


The image you see behind the lure is a picture of the actual sound waves created by that particular lure.

To hear how your Mepps spinner sounds as it's being pulled through the water place your cursor over the lure photo.

Thunder Bug #2

Waveforms of the sounds produced by the Thunder Bug #2
When Mepps developed the Thunder Bug it was introduced as the first and only spinner that allowed fishermen to "Match the Hatch." Not only is its blade shaped like a bug's wing, it is veined like the wing of a bug. Its body is segmented like the body of a bug. These lures also come in color patterns imitating insects. In fact, they look so much like insects we've given them bug names, everything from grasshopper to white miller to stone fly. . . nine different patterns, too, will match the hatch. However, what we didn't know until now is a spinning Thunder Bug blade SOUNDS like a bug. That's right, a Thunder Bug pulled through the water produces a sound very similar to small rapidly flapping wings. We also discovered, if we increased the speed of this file about 3 times and raised its pitch, the sound became a buzz. While this is hardly a scientific study with any definite conclusions, listening to this enhanced file can be fun.


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