English (US)
Rabbitbush Flower Moth- Radcliffe's Dagger
- Ragweed Flower Moth
Ragweed Plume- Ragwort Stem Borer
- Ranaeceps Datana
Ranchman's Tiger Moth
Rand's Eyed Silk Moth
Range Caterpillar Moth
- Range Grass Moth
- Rare Grass Dart Moth
- Rare Sand Quaker
Raspa Small Silkmoth
Raspberry Crown Borer
- Raspberry Looper
Rattlebox Moth
- Reaper Dart Moth
- Red Cutworm
- Red Dart Moth
Red Dart Moth
- Red Lined Moth
Red Maple Borer
Red Oak Clearwing
Red Rim
Red-banded Aemilia
- Red-breasted Dart Moth
Red-headed Pygarctia Moth
- Red-humped Caterpillar Moth
- Red-humped Oakworm
Red-legged Diacrisia
Red-Lined Clearwing
- Red-lined Yellow Prominent
- Red-marked Tentmaker
Red-shouldered Ctenucha
- Red-spot Polia
Red-spotted Purple
Red-tailed Specter
- Red-washed Prominent
- Reddish Heath Dart
- Reddish Speckled Dart
Regal Fritillary
Regal Moth
Relict
Relict Fritillary
- Reniform Celaena Moth
Residua Underwing
Reversed Haploa
Rhododendron Borer
Ribbed Underwing
- Ridings' Forester
Riley's Clearwing
Riley's Lappet Moth
Rimosus sphinx
Rivularis Sphinx
Robinson's Underwing
- Robust Datana
Rocky Mountain Agapema
Rocky Mountain Apollo
Rocky Mountain clearwing
Rocky Mountain Duskywing
Rosaceous Leaf Roller
Rose Hooktip Moth- Rosewing Moth
Ross' Tussock Moth
Rosy Aemilia
- Rosy Dart
Rothschild's Silk Moth
- Rotund Idia
- Rough Prominent
- Rough-Skinned Cutworm Moth
- Rubbed Dart
Rubber Tree Caterpillar
Ruddy Copper
Ruddy Daggerwing
- Ruddy Holomelina
- Ruddy Quaker Moth
- Rufous Quaker Moth
- Russian Mustard Moth
- Russian Thistle Casebearer
- Russian Thistle Stem Miner
Rustic Sphinx
- Rusty Holomelina
- Rusty Prominent
Rusty Tussock Moth
- Rusty Whitesided Caterpillar
87 species