labugs.org · v3.028 · 3,438 species across 15 taxa groups
A self-contained progressive web app (PWA) field guide to the invertebrates of Los Angeles County, California. Works offline after first visit. No login required.
| Group | Species |
|---|---|
| Moths | 574 |
| Beetles | 567 |
| True Bugs & Allies | 470 |
| Flies | 403 |
| Wasps & Ants | 298 |
| Arachnids | 281 |
| Snails & Mollusks | 200 |
| Native Bees | 176 |
| Butterflies | 148 + 5 ssp |
| Orthoptera | 144 |
| Dragonflies & Damselflies | 72 |
| Myriapods | 37 |
| Hoverflies | 36 |
| Crustaceans | 18 |
| Bumblebees | 9 |
| Total | 3,433 + 5 ssp |
- Offline-capable PWA — three-tier data persistence: network → IndexedDB → SW cache. Survives iOS Safari's 7-day cache eviction.
- iNaturalist life list integration — log in with your iNat username to track observed species with ✓ badges and seen/unseen counts per group
- Photo cards — CC-licensed images from iNaturalist for every species
- Ecological associations (hp) — species-specific notes on host plants, prey, habitat, and ecological role. 100% coverage, 69% unique, 0 ≥5-share duplicates.
- Cross-links to host plants — 969 species (28%) link directly to la-flora.org with one-tap deep linking
- Peak month data — 833 species (24%) with documented peak activity months
- Elevation filter — Coast / Lowland / Foothill / Mid-elev / Mountain toggle chips
- Rarity filter — Common / Uncommon / Rare / Vagrant / Endangered, calibrated from published sources
- Origin filter — Native / Introduced / Invasive / Endemic
- Family browser — expandable family chips with species counts, alphabetic or taxonomic sort
- Cross-group search — search across all 15 taxa groups with "Also found in" navigation
- Deep-link URLs —
?species=Scientific+name,?search=term,#species/Scientific_name - Subspecies — 5 subspecies rendered on parent detail sheets, filtered from photo grid
- iOS safe-area support — Dynamic Island / notch-aware sticky navigation
- Full SEO — JSON-LD WebApplication schema, Open Graph tags, canonical URL
| Status | Species | % | Basis |
|---|---|---|---|
| Common | 500 | 14% | "abundant", "most common", "ubiquitous" in published sources |
| Uncommon | 2,815 | 82% | Default — no strong evidence of abundance or scarcity |
| Rare | 68 | 2% | "very rare", "few records", "declining" in description evidence |
| Vagrant | 46 | 1% | Seasonal/accidental visitors |
| Endangered | 7 | <1% | ESA/CESA listed |
Part of the LA County Field Guide Suite:
| Guide | URL | Species |
|---|---|---|
| 🌿 Plants, Mosses & Lichens | la-flora.org | 1,476 |
| 🐛 Invertebrates | labugs.org | 3,438 |
| 🍄 Fungi | lafungi.org | 724 |
| 🦎 Wildlife | la-fauna.org | 252 |
969 species → la-flora.org host plants · 46 → lafungi.org fungal associates · 146 → la-fauna.org vertebrate predators
Multi-file PWA: index.html (78 KB) + 15 JSON data files in data/ (~1,880 KB). Service worker (sw.js) caches all assets. IndexedDB (invertOffline) persists species data beyond SW cache lifetime for iOS resilience. No build step, no framework, no dependencies.
- Species: iNaturalist research-grade observations, LA County (place_id 962)
- Photos: CC-licensed via iNaturalist API, cached in IndexedDB
- Ecology: Hogue (1993), Powell & Hogue (2020), Emmel & Emmel (1973), Manolis (2003), Michener (2007), Williams et al. (2014), Hatfield et al. (2015), Xerces Society, UC IPM, CA Bumble Bee Atlas, BumbleBeeWatch, socalbutterflies.com, Essig Museum
- Maps: ESRI + iNaturalist
GPL v3. See LICENSE. For informational purposes only — not a substitute for expert identification.
