
316
Summary
Colletes transitorius, a monolege on Rhus cortarius), Apiaceae (4 species of Colletes, Andrena and Epi-
methea), Asparagaceae (1 species: Andrena chrysopus, an oligolege on Asparagus), Asteraceae (60 species
of Colletes, Andrena, Camptopoeum, Panurgus, Dufourea, Dasypoda, Anthidium, Anthocopa, Heriades,
Icteranthidium, Lithurge, Megachile, Mesanthidium, Osmia, Paranthidiellum, Eucera, Melissina, Tetra-
lonia, and Tarsalia), Boraginaceae (6 species of Colletes, Andrena, and Hoplitis), Brassicaceae (24 species
of Andrena, Panarginus, and Metallinella), Campanulaceae (17 species of Andrena, Halictoides, Lasioglos-
sum, Melitta, Chelostoma, and Hoplitis), Chenopodiaceae (1 species: Colletes annulicornis, ? monolege on
Horaninowia ulicina), Convolvulaceae (5 species of Systropha and Eremaphanta), Cucurbitaceae (2 species:
Andrena florea, an oligolege on Bryonia, Ctenoplectra davidi, a monolege on Thladiantha dubia), Dipsaca-
ceae (9 species of Andrena, Dasypoda, Anthidium, and Tetralonia), Ericaceae (2 species: Colletes succinctus
and Andrena fuscipes, monoleges on Calluna vulgaris), Fabaceae (43 species of Colletes, Andrena, Melit-
turga, Nomia, Rhophitoides, Melitta, Anthidiellum, Chalicodoma, Hoplitis, Kumobia, Megachile, Osmia,
Trachusa, Amegilla, Anthophora, Eucera, and Tetralonia), Lamiaceae (9 species of Evylaeus, Rophites,
Clisodon, and Paramegilla), Lythraceae (2 species: Melitta nigricans and Tetralonia salicariae, monoleges
on Lythrum salicaria), Malvaceae (3 species of Anthocopa and Tetralonia), Peganaceae (1 species: Para-
rhophites orobinus, a monolege on Peganum harmala), Primulaceae (3 species of Macropis), Ranunculaceae
(2 species: Colletes punctatus, a monolege on Nigella arvensis; Chelostoma maxillosum, an oligolege on
Ranunculus), Rosaceae (1 species: Andrena potentillae, an oligolege on Potentilla).
2.4. Adaptations of the oligolectic bees. Some examples of seasonal, space, diurnal, morphological, and
ethological adaptations are given. The inheritance of trophical specialization in bees is discussed.
2.5.
On
co-evolution
of bees
and
angiosperm
plants.
Bees can carry on the selection
of
plants only if
demands of bees are identical. Analogously, the plant can be a factor of bee selection, if the bees forage on the
flowers of few plant species that have coinciding interests. The analysis of real situations shows that the systems
«pollinators—flowers» consisting of a small number of species are very rare. The causes and evolutionary
consequences of this phenomenon are discussed.
The published data on the competition between pollinators (for sources of pollen and nectar), as well as
between flower plants (for pollinators) are very fragmentary and contradictory. Few direct estimations
(e. g. Mosquin, 1971; Pesenko et al., 1980, 1982; Ginsberg, 1983; Nelson et al., 1985; Camillo, Garofalo,
1989a) are the evidence of the weak competative interactions of both types or their lack.
Among the most important morphological characters used in the suprageneric and generic classification of
bees some are directly linked with foraging behavior (structure of the labiomaxillar complex and relative size
of its parts, localization and structure of the scopa, etc.). However, the adaptation of bees to pollen collecting
on flowers of some limited plant group is less manifested on all taxonomic levels above specific. Only very few
genera and subgenera of bees (all with a few species) consist of oligoleges that forage only on one of the plant
families. In the Palearctic fauna such genera (including three monotypic) are Camptopoeum, Lithurge,
Melissina, Panurgus, Paranthidiellum and Tarsalia (all on Asteraceae); Melitturga, Rhophitoides and
Kumobia (all on Fabaceae); Rophites and Clisodon (the both on Lamiaceae); Ctenoplectra (on Cucurbi-
taceae); Halictoides (on Campanulaceae); Macropis (on Primulaceae), Panurginus (on Brassicaceae),
Systropha (on Convolvulaceae), Pararhophites (on Peganaceae).
Apparently, the flower plants played appreciable part in divergence of some phyletic lineages of bees.
However, traces of their influence on bee selection were masked by numerous subsequent changes of foraging
habits of bees.
2.6. Foraging behavior. Energetics of foraging, learning for flower visitation, flower constancy, and the
organization of bees foraging are discussed. It is concluded that the theory of optimal foraging is of a small
importance for recognizing the main laws and features concerning to the foraging behavior of bees and their
distribution on different plants.
2.7. Pollination of entomophilous plants. Entomophilous crops (190 species) cultivated in Russia and
neighbouring countries are listed. There is a grave problem in seed-growing and harvestgetting of those
enthomophilous crops which are not pollinated by the honey bee: red clover, alfalfa, and apple (some cultivars).
The wild bees which pollinate these plants are listed. About 30 bee species managed for pollination of those
and some other agricultural crops are reviewed, some of these bees were introduced to other countries.
Chapter 3. Cleptoparasitic bees
3.1. Taxonomic diversity. Cleptoparasitic species are known in five families of bees: Halictidae, Cteno-
plectridae, Megachilidae, Anthophoridae, and Apidae. The Table 2 shows the taxonomic diversity of
cleptoparasitic bees with the suprageneric taxa consisting of cleptoparasites only marked by an asterisk (column
1), the nearest ancestor of each cleptoparasitic taxon with references (column 2), its distribution (column 3),
and hosts (column 4). In their morphological differentiation, the related cleptoparasitic species, as a rule,
achieved the generic or even tribal ranks. Exceptions are rare: two parasitic bumble bee species (Bombus
hyperboreus and B. inexpectatus) and some parasitic allodapine species in the genera Allodape, Atlodapula,