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Morphological and allozyme analyses suggested the occurrence of a pseudocryptic species in the Lasioglossum villosulum (Kirby, 1802) species complex (Hymenoptera: Halictidae). We analysed the morphology of more than 1500 specimens and the DNA barcode fragment of the cytochrome c oxidase subunit I (COI) of 102 specimens of this species complex from several Palaearctic countries. Our phylogenetic tree reconstructions, based on maximum likelihood and Bayesian inference revealed one clade corresponding to all specimens morphologically identified as Lasioglossum medinai (Vachal, 1895) and one divergent specimen morphologically identified as Lasioglossum berberum (Benoist, 1941). The other specimens, morphologically identified as L. villosulum, aggregated into at least three other lineages in our phylogenetic trees. The tree-based species delineations methods based on the Generalized Mixed Yule Coalescent (GMYC) model and the Bayesian Poisson Tree Process (bPTP) identified five to ten candidate species within the L. villosulum species complex, with L. medinai and L. berberum consistently recognized as separated from all other candidate species. Diagnostic morphological differences were found among L. medinai, L. berberum and the remaining specimens identified as L. villosulum. No diagnostic morphological differences were found to distinguish the different phylogenetic candidate species or lineages found within L. villosulum and L. medinai. Thus, both genetic and morphological approaches support the existence of L. medinai and L. berberum as distinct species from L. villosulum.
The Palaearctic species of Ismaridae Thomson, 1858 are reviewed. Thirteen species of Ismaridae are recognized from the Palaearctic. Five species are described as new: Ismarus brevis Kim & Lee sp. nov. from the Russian Far East and South Korea; I. distinctus Kim, Notton & Ødegaard sp. nov. from Norway and the United Kingdom; I. excavatus Kim & Lee sp. nov. from China, Japan and South Korea; I. similis Kim, Notton & Lee sp. nov. from the United Kingdom and I. tripotini Kim & Lee sp. nov. from South Korea. Ismarus apicalis Kolyada & Chemyreva, 2016 is newly recorded from China, France, Japan and South Korea; I. dorsiger (Haliday, 1831) from France, Montenegro, Norway, South Korea and Switzerland; I. flavicornis (Thomson, 1858) from Bulgaria and Norway; I. grandis Alekseev, 1978, I. halidayi Förster, 1850 and I. multiporus Kolyada & Chemyreva from Japan and South Korea; I. rugulosus Förster, 1850 from Austria and I. spinalis Kolyada & Chemyreva, 2016 from China, Japan and South Korea. An identification key to all species found in the Palaearctic region is presented.
The types of nominal species of Diapriinae in the collection of the Natural History Museum, London, are catalogued. Lectotypes are designated for the following taxa: Diapria peraffinis Ashmead, 1896; D. smithii Ashmead, 1896; Galesus bipunctatus Ashmead,1894; G. (G.) foersteri var. nigricornis Kieffer, 1911; G. sexpunctatus Ashmead, 1893; G. walkeri Kieffer, 1907; Idiotypa nigriceps Kieffer, 1909; I. nigriceps Kieffer, 1911; I. pallida Ashmead, 1893; I. pallida Ashmead in Riley, Ashmead & Howard, 1894; Paramesius angustipennis Kieffer, 1911; P. cameroni Kieffer, 1911; Phaenopria cameroni Kieffer, 1911; P. halterata Kieffer, 1911; P. magniclavata Ashmead, 1896; Tropidopsis clavata Ashmead, 1893; T. clavata Ashmead in Riley, Ashmead & Howard, 1894. New combinations are proposed: Aneuropria bifurcata comb. nov. for Mantara bifurcata Dodd, 1920; Basalys quadridens comb. nov. for Microgalesus quadridens Kieffer, 1912; Coptera cratocerus comb. nov. for Galesus cratocerus Cameron, 1912; Coptera sexpunctata comb. nov. for Galesus sexpunctatus Ashmead, 1893; Doliopria magniclavata comb. nov. for Phaenopria magniclavata Ashmead, 1896; Spilomicrus aterrimus comb. nov. for Hoplopria aterrima Dodd,
1920; Spilomicrus campbellanus comb. nov. for Antarctopria campbellana Yoshimoto, 1964; Spilomicrus coelopae comb. nov. for Antarctopria coelopae Early, 1978; Spilomicrus diomedeae comb. nov. for Antarctopria diomedeae Early, 1978; Spilomicrus helosciomyzae comb. nov. for Malvina helosciomyzae Early & Horning, 1978; Spilomicrus insulae comb. nov. for Malvina insulae Early, 1980; Spilomicrus latigaster comb. nov. for Antarctopria latigaster Brues in Tillyard, 1920; Spilomicrus punctatus comb. nov. for Malvina punctata Cameron, 1889; Spilomicrus rekohua comb. nov. for Antarctopria rekohua Early, 1978; Trichopria bouceki comb. nov. for Oxypria bouceki Masner, 1959; Trichopria nigriceps comb. nov. for Tropidopria nigriceps Ashmead in Riley, Ashmead & Howard, 1894; Trichopria nigriceps comb. nov. for Xyalopria nigriceps Kieffer, 1907; Trichopria spinosiceps comb. nov. for Acidopria spinosiceps Dodd, 1920; Trichopria walkeri comb. nov. for Diapria walkeri Dalla Torre, 1890. New replacement names are proposed: Coptera mosselensis nom. nov. for C. nigricornis Nixon, 1930 preocc.; Coptera pijiguaorum nom. nov. for C. sexpunctata Montilla & García, 2008 preocc.; Spilomicrus kozlovi nom. nov. for S. punctatus Kozlov, 1978 preocc.; Trichopria fluminis nom. nov. for T. nigriceps (Kieffer, 1907) preocc.; T. thermarum nom. nov. for T. nigriceps (Kieffer, 1913) preocc. New specific synonyms are proposed: Basalys cursitans (Kieffer, 1911) = B. pedisequa (Kieffer, 1911) syn. nov. (the former removed from synonymy with B. parvus Thomson, 1858); B. iphicla Nixon, 1980 = B. macroptera (Kieffer, 1911) syn. nov.; Coptera bipunctata (Ashmead in Riley, Ashmead & Howard, 1894) = C. sexpunctata (Ashmead, 1893) syn. nov.; Idiotypa nigriceps Kieffer, 1911 = I. nigriceps Kieffer, 1909 syn. nov.; I. pallida Ashmead in Riley, Ashmead & Howard, 1894 = I. pallida Ashmead, 1893 syn. nov.; Psilus nigricornis (Kieffer, 1911) = P. fuscipennis (Curtis, 1831) syn. nov.; P. walkeri (Kieffer, 1907) = P. fuscipennis (Curtis, 1831) syn. nov.; T. bouceki (Masner, 1959) = T. conotoma (Kieffer, 1911) syn. nov.; Trichopria halterata (Kieffer, 1911) = T. halterata (Kieffer, 1909) syn. nov. New generic synonyms are proposed: Antarctopria Brues in Tillyard, 1920 = Spilomicrus Westwood, 1832 syn. nov.; Malvina Cameron, 1889 = Spilomicrus Westwood, 1832 syn. nov.; Mantara Dodd, 1920 = Aneuropria Kieffer, 1905 syn. nov.; Microgalesus Kieffer, 1912 = Basalys Westwood, 1833 syn. nov.; Xyalopria Kieffer, 1907 = Trichopria Ashmead, 1893 syn. nov. (Xyalopria is removed from synonymy with Megaplastopria Ashmead, 1903). A brief account of some aspects of the history of these types is given.
Type material of the species of Alloxysta described by Cameron and Fergusson and deposited in the Natural History Museum of London has been revised. Seven species are considered valid: Alloxysta abdera Fergusson, 1986, A. basimacula (Cameron, 1886), A. crassa (Cameron, 1889), A. mullensis (Cameron, 1883), A. piceomaculata (Cameron, 1883), A. pleuralis (Cameron, 1879) and A. semiaperta Fergusson, 1986. A. basimacula, A. crassa, A. maculicollis (Cameron, 1886), A. perplexa (Cameron, 1889) and A. piceomaculata are here removed from synonymy with A. macrophadna (Hartig, 1841). A. rufi ceps (Cameron, 1883) is removed from synonymy with A. victrix (Westwood, 1833). A. caledonica (Cameron, 1886) and A. perplexa are here synonymized with A. basimacula. A. maculicollis, A. ruficeps and A. ruficollis (Cameron, 1883) are here synonymized with A. castanea (Hartig, 1841). A. ancylocera (Cameron, 1886) was correctly synonymized with A. fuscicornis (Hartig, 1841), A. curvicornis (Cameron, 1883) was correctly synonymized with A. victrix and A. filicornis (Cameron, 1889) was correctly synonymized with A. macrophadna. Complete redescriptions and illustrations are given for valid species. A key for all the Alloxysta species found so far in Great Britain is given.
Parasitoid wasps new to Britain (Hymenoptera: Platygastridae,
Eurytomidae, Braconidae & Bethylidae)
(2014)
One genus and five species are recorded as new to Britain: Fidiobia, Fidiobia hispanica, Macroteleia bicolora (Platygastridae); Sycophila binotata (Eurytomidae); Schizoprymnus collaris (Braconidae); and Laelius pedatus (Bethylidae). Keys to British Macroteleia and Laelius are provided.
Provisional synonymy is proposed between Macroteleia minor and M. brevigaster, and synonymy is proposed between Laelius femoralis, L. microneurus and L. nigricrus. The possible mode of introduction of Sycophila binotata is discussed. A lectotype is designated for Schizoprymnus collaris.