More rammed-full moth-traps at the Obs last night: ongoing influx of Willow Ermines accounting for 536 of the night's total; migrants incl 118 Small Mottled Willow, 10 Small Marbled & first Beautiful Twitcher micalis of the yr; dispersers incl 2nds of Scarce Spindle Ermine & LS Pinion this week
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 10, 2026 at 3:06 PM
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1. Recently back from ten wonderful days surveying the Isle of Portland, Dorset. Quarries, cliffs, grasslands and the odd bit of woodland and wetland. Finding flowery areas was the key to finding exciting insects. pic.twitter.com/JWrKnFEmOu
— Steven Falk (@StevenFalk1) July 8, 2026
2. Nice bees seen/photographed included Carrot Mining Bee Andrena nitidiuscula, Bare-saddled Colletes Colletes similis, Coast Leafcutter Bee Megachile maritima and its cuckoo, the Large Sharp-tail Bee Coelioxys conoidea. The modern bee list must be well over 100 species now. pic.twitter.com/Cf07nMcnBf
— Steven Falk (@StevenFalk1) July 8, 2026
3. A stonewort-rich pool in Yeolands Quarry had lots of dragonfly activity including Red-veined Darter, Black-tailed Skimmer and Emperor. pic.twitter.com/zqmDAzyHag
— Steven Falk (@StevenFalk1) July 8, 2026
4. The number of scarce and unusual flies in that quarry was overwhelming, especially on Wild Carrot: Large Marsh Horsefly Tabanus autumnalis, the striking 'fleshfly' Macronychia dolini (a cleptoparasite of Ectemnius wasps), and the hoverfly Scaeva selenitica on one patch alone. pic.twitter.com/uM9E8UaT7q
— Steven Falk (@StevenFalk1) July 8, 2026
5. I made two visits to Chesil Beach to check the vegetated shingle and saltmarsh. The scarce Shingle Yellow-face Bee Hylaeus annularis was abundant on Carrot and Biting Stonecrop. Saltmarsh flies included the tiny Xanthocanace ranula and long-legged fly Hydrophorus oceanus. pic.twitter.com/lH7l0BO0hR
— Steven Falk (@StevenFalk1) July 8, 2026
6. Beetles seen included the rare chafer Amphimallon falleni, the Tawny Longhorn Paracorymbia fulva and Bloody-nosed beetle Timarcha tenebricosa, clambering over Madder (that's like Strawberries and cream). I also saw my first adult Southern Green Shieldbug Nezara viridula. pic.twitter.com/eRv6zi6kSA
— Steven Falk (@StevenFalk1) July 8, 2026
7. I've never seen such an abundance of broomrapes before. On Portland they were mainly Ivy Broomrape but Carrot Broomrape occurs along Chesil Beach. The rare & protected Portland Sea-lavender (endemic to Portland) grows on cliff ledges, usually alongside Golden Samphire. pic.twitter.com/ZcBWlqgs7d
— Steven Falk (@StevenFalk1) July 8, 2026
8. The Bird Observatory garden never fails to deliver: the hoverfly Lapposyrphus lapponicus (25 yrs since I last saw one), the scarce Chrysotoxum elegans (common as usual), also the rare parasite fly Townsendiellomyia nidicola (attacks Brown-tail Moth which I hate). pic.twitter.com/TOhAvsriJO
— Steven Falk (@StevenFalk1) July 8, 2026
9. Can't wait to get back there again. pic.twitter.com/njM2JYisQx
— Steven Falk (@StevenFalk1) July 8, 2026


