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The solitary ivy bee Colletes hederae has recently naturally colonised the British Isles. It was first recorded in Britain in Dorset, near the south coast, in 2001. By 2021 it had reached Scotland and Ireland. It had spread to Sussex, some 100km east of Dorset by 2004, but occurred only locally. In autumn 2020, to determine the distribution and abundance of the ivy bee in Sussex, we made three surveys of 100 insects foraging on ivy flowers at 57 locations during the female flight period. We found the ivy bee at all 57. It was the second most abundant insect (22%), being outnumbered by social wasps (Vespula spp. 42%), but was more numerous than honey bees (Apis mellifera 14%). In autumn 2021 we made a further presence or absence survey at 17 additional locations, and the ivy bee was seen at each one. The results show that the ivy bee is now found throughout Sussex and is abundant. Comparisons of site characteristics showed no significant effect of urban versus rural locations on ivy bee relative abundance. It was, however, significantly more relatively abundant on Downland compared to Weald and Coastal Plain locations, and on chalk and sand derived soils compared to clay and alluvium derived soils. Possible reasons for the success of C. hederae in Britain are discussed. [ABSTRACT FROM AUTHOR]

Native wild flowering plants provide important season‐round nectar and pollen resources for flower‐visiting insects, but many are unappreciated or even disliked by members of the public; for example ivy (Hedera spp.), dandelion (Taraxacum officinale agg.) and bramble (Rubus fruticosus agg.).This antipathy has received little research attention despite a pressing need for a societal shift towards greater awareness of such plants and recognition of their ecological value.Engendering greater awareness and appreciation of common wild‐growing plants could greatly improve floral resource availability for flower‐visiting insects, enhance biodiversity and simultaneously benefit human physical and mental well‐being.However, there are multiple challenges to changing public attitudes. Knowledge of common wild flowering plants among members of the public is limited and this phenomenon is symptomatic of a diminishing human connection to nature. While many species of wild flowering plants may be overlooked due to a lack of awareness or knowledge, it is evident that some 'weeds' are actively unpopular.Reframing societal perceptions towards ecological value could be achieved in several ways including through formal education, messaging by the media, businesses and environmental organisations, and by encouraging public participation in urban land management. Read the free Plain Language Summary for this article on the Journal blog. Read the free Plain Language Summary for this article on the Journal blog. [ABSTRACT FROM AUTHOR]

Bramble (Rubus fruticosus L. agg.) is a common summer‐flowering plant native to the United Kingdom. Multiple complementary approaches were used to evaluate its ecological value to the honeybee (Apis mellifera), bumblebees (Bombus spp.) and other flower‐visiting insects in Sussex, England.Regional surveys of insect groups at seven sites across 2 years showed that foraging activity on bramble was dominated by honeybees (60.2%; n = 28 surveys) and bumblebees (17.4%), compared to non‐Apis/Bombus bees (2.8%), hoverflies (Syrphidae, 7.9%), non‐syrphid flies (0.6%), butterflies (6.4%), wasps (0.4%) and beetles (4.4%). Foraging insect community structure was highly similar spatially, but varied significantly between survey months (June and July).In detailed local surveys at one rural and one urban location, there was a diverse range of insect taxa foraging on the bramble flowers, including species of conservation concern (Bombus humilis, Coenonympha pamphilus and Limenitis camilla).Pollen trapping at 12 honeybee hives in four locations showed that an average of 31% of pollen pellets collected by honeybees from late May to early August were bramble, with a peak of 66–86% per location.Bramble was present in 54 out of 60 200 × 200 m randomly selected grid squares surveyed over a large area across Sussex. Plants were recorded in multiple habitat types in both urban and rural areas.Bramble is sometimes considered an undesirable plant or a "thug" that outcompetes other wild flowers; however, these findings confirm that it is highly valuable for flower‐visiting insects. Wherever conflicts of interest and management strategies allow, bramble should be maintained and promoted for wildlife and insect conservation. [ABSTRACT FROM AUTHOR]

The ivy bee, Colletes hederae, was first detected in Britain in 2001 and is abundant in many locations. Their ground nesting aggregations can occur in public areas and cause concern about stinging risk. Here we assess that risk. The likelihood of being stung or collided with when in an active aggregation was low, with only 1 sting in 10 h of activity (standing, walking, and "gardening") by a human subject. Collisions were low at 6 per hour. The ivy bee sting is frequently unable to penetrate human skin. Only half were able to sting the fingertips and 75% the inner forearm when held against these areas. Pain was scored using a modified Starr/Schmidt scale. Ivy bee stings were significantly less painful than those of honey bee workers Apis mellifera, with similar scores to a nettle sting, Urtica dioica. Pain subsided after 10 min with weals smaller than both honey bees and nettles. The ivy bee venom sac was ca. 39% the volume of that of a worker honey bee. The sting is similar in size to the honey bee sting and barbs were not seen at 35× magnification. We conclude that the ivy bee is not a danger to the public. They rarely sting people active in a nest aggregation area, have a sting that is frequently unable to penetrate human skin and that causes minimal pain for a short duration, comparable to that of a nettle sting. Nettle stings are considered to be annoying but not dangerous. [ABSTRACT FROM AUTHOR]

Female mating frequency varies. Determining the causes of this variation is an active research area. We tested the hypothesis that in stingless bees, Meliponini, single mating is due to the execution of queens that make a matched mating at the complementary sex determination locus and have diploid male offspring. We studied the Brazilian species Scaptotrigona depilis. We made up 70 test colonies so that 50% (single matched mating), 25% (double mating), 12.5% (quadruple mating), or 0% (single nonmatched mating) of the emerging brood were diploid males. Queen execution following diploid male emergence was equal and high in colonies producing 50% (77% executed) and 25% (75%) diploid males versus equal and low in colonies producing 12.5% (7%) and 0% (0%) diploid males. These results show that queens that mate with two males with similar paternity suffer an increased chance of being executed, which selects against double mating. However, double mating with unequal paternity (e.g., 25∶75), which occasionally occurs in S. depilis , is selectively neutral. Single mating and double mating with unequal paternity form one adaptive peak. The results show a second adaptive peak at quadruple mating. However, this is inaccessible via gradual evolutionary change in a selective landscape with reduced fitness at double mating. [ABSTRACT FROM AUTHOR]