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Prague, Czech Republic

Straka J.,Charles University | Rezkova K.,Charles University | Batelka J.,Nad vodovodem 16 | Kratochvil L.,Charles University
Ethology Ecology and Evolution | Year: 2011

Stylopised (= parasitised by Strepsiptera Stylopidae) imagoes of Andrena (Hymenoptera Andrenidae) bees are known to exhibit intersexual morphology. Until now, their abnormal morphology has been thought to result from undernourishment of parasitised larvae during development. This hypothesis, however, dos not fit to mass provisioning Hymenoptera. We hypothesised that induced changes in the suite of morphological characters might be a consequence of manipulation of sex-specific behavioural traits by a strepsipteran parasite. Thus, the masculinised morphology of stylopised females might be connected with shifts in their sexual behaviour. Here, we tested the effect of Stylops (Strepsiptera Stylopidae) infection on the timing of spring nest emergence in Andrena bees, where males generally emerged conspicuously earlier than conspecific females. We used two independent data samplings - pan trapping and direct observation - to avoid possible bias caused by one of the methods. In accordance with our hypothesis, we documented that the time of emergence/activity in stylopised females follows the temporal trend of uninfected, protandrous males. We ascribe this observation to host manipulation and briefly discuss the potential adaptive value of the altered host behaviour for the parasite. We discuss our results across three species: Andrena strohmella, A. minutula and A. vaga. © 2011 Dipartimento di Biologia Evoluzionistica dell'Università, Firenze, Italia.

Batelka J.,Nad vodovodem 16
Acta Entomologica Musei Nationalis Pragae | Year: 2010

Distribution of the Ripiphoridae (Coleoptera: Tenebrionoidea) in the Arabian Peninsula is evaluated. Six species belonging to the genera Macrosiagon Hentz, 1830 and Ripiphorus Bosc, 1791 are figured and keyed, and the distribution of each species is mapped. Including new and previously published records, the Ripiphoridae are now reported from 19 localities of the Arabian Peninsula and offshore islands. Coordinates for each exact locality are given.

Batelka J.,Nad vodovodem 16 | Kundrata R.,Palacky University | Bocak L.,Palacky University
Annales Zoologici | Year: 2016

Ripiphoridae phylogeny inferred from rRNA and mtDNA markers and 23 taxa from four subfamilies is presented. Despite much denser sampling than previous studies and completeness of the assembled dataset, the phylogenetic signal from molecular markers remains ambiguous. The dataset does not support monophyly of Ripiphoridae and suggests the Ripiphoridae + Mordellidae clade with ripiphorid lineages forming gradual splits basally to Mordellidae. Previous hypotheses on relationships of Meloidae and Ripiphoridae and a single origin of developmental modifications are refuted. The ripiphorid subfamilies are regularly recovered and we found Pelecotominae and Ptilophorinae among deep splits. Ripidiinae, despite morphological divergence, are regularly found within the ripiphorid+mordellid clade in a sister relationships to Ripiphorinae + Mordellidae. Molecular phylogeny of Ptilophorus Dejean supports a hypothesis about their Gondwanan origin and subsequent dispersal to the Northern hemisphere. The clade Macrosiagon Hentz + Metoecus Dejean is well defined and majority consensus suggests a terminal position of Metoecus within Macrosiagon and the inferred subclades agree with the morphology-based species-groups. Ripiphorus caboverdianus Batelka & Straka, 2011 is lowered to a subspecies of R. arabiafelix Batelka, 2009. © Museum and Institute of Zoology PAS.

Batelka J.,Nad vodovodem 16
Annales de la Societe Entomologique de France | Year: 2011

A new genus and species, Olemehlia krali n. g. & n. sp. (Coleoptera: Ripiphoridae: Ripidiinae), is described from Baltic amber. The newly described genus is compared with all known fossil and extant closely related genera of the subfamily Ripidiinae. It is characterised by the following combination of characters: antennae consisting of 10 antennomeres, with scape, pedicel, and antennomere 3 simple and antennomeres 4-10 uniflabellate, mouthparts reduced to a small single unpaired tubercle, postocular ommatidia absent, pronotum trapezoid without grooves or impressions, elytra without white apical spots, tarsal formula 5-5-4, hind tarsomere I shorter than three remaining combined. Diversity of Ripiphoridae in Baltic amber is discussed; key to Ripidiinae genera from Baltic amber is provided.

Ptilophorus purcharti sp. nov. (Coleoptera: Ripiphoridae) from Socotra Island, Yemen, is described and figured. It is compared with all known Afrotropical and Palaearctic species of the genus and is considered to be a relictual species with Asian relatives. The distribution of the species seems to be restricted to the Afromontane forest habitats in Al Hagher mountain range. A preliminary phylogenetic analysis of Ptilophorini is performed and discussed. The density and length of setation on the antennal rami of Ptilophorini males are shown to be characters of potential phylogenetic importance which may help to understand the biogeography of the tribe. A preliminary hypothesis of Ptilophorini biogeography is proposed.

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