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2. Flight substrates in blister beetles (Coleoptera: Meloidae) and their regulation by neuropeptides of the AKH/RPCH family
- Creator:
- Gäde, Gerd and Auerswald, Lutz
- Format:
- print, text, and regular print
- Type:
- article, bibliography, model:article, and TEXT
- Subject:
- zoologie, entomologie, hmyz, brouci, Meloidae, Decapotoma lunata, Mylabris oculata, let, letové substráty, hemolymfa, tuky, cukry, proline, koncentrace, regulace koncentrace substrátů, neuropeptidy, AKH/RPCH neuropeptidy, 595.2/.7, and 591.1
- Language:
- English
- Description:
- We measured energy substrates in haemolymph and flight muscles of the large blister beetle Mylabris oculata at rest and after tethered, lift-generating flight. Flight of 1 min duration at an ambient temperature of 38-42°C did not effect a change in the concentration of lipids in the haemolymph, whereas a small, significant decrease in the concentrations of carbohydrates and a 3-fold larger one in the levels of proline were noted, as well as a concomitant increase in alanine. In the flight muscles, glycogen and proline concentrations were diminished slightly but significantly upon flight, whereas alanine levels were increased. Two hours of rest after a flight of 1 min completely reversed the metabolic situation in haemolymph and flight muscles to pre-flight levels. We could isolate two neuropeptides from the corpora cardiaca of M. oculata, which by retention time and mass analyses are characterised as the decapeptide Del-CC (pGlu-Leu-Asn-Phe-Ser-Pro-Asn-Trp-Gly-Asn-NH2) and the octapeptide Tem-HrTH (pGlu-Leu-Asn-PheSer-Pro-Asn-Trp-NH2) previously fully identified from the corpora cardiaca of the blister beetle, Decapotoma lunata (Gäde, 1995). Subsequently, it was unequivocally demonstrated that low doses of Del-CC and Tem-HrTH elicited increases in the concentration of proline and carbohydrates in the haemolymph of D. lunata and M. oculata, but did not change the concentration of lipids in both species. In conclusion, the two endogenous peptides are hypertrehalosaemic and hyperprolinaemic, thus very likely regulating the mobilisation of the two important flight substrates of blister beetles, namely carbohydrates and proline., Gerd Gäde, Lutz Auerswald, and Lit
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
3. Review of the genus Stenodera with a description of the first instar larva of S. puncticollis (Coleoptera: Meloidae)
- Creator:
- Bologna, Marco A., Di Giulio, Andrea, and Pinto, John D.
- Type:
- article, model:article, and TEXT
- Subject:
- Taxonomy, Coleoptera, Meloidae, Stenodera, larvae, key, and bionomics
- Language:
- English
- Description:
- The first instar larva, or triungulin, of Stenodera puncticollis (Chevrolat, 1829) is described. Its characters indicate that Stenodera is the most primitive member of the subfamily Nemognathinae and support the recognition of the monotypic tribe Stenoderini, as previously proposed on the basis of adult morphology. The bionomic information on this genus is summarized, and an annotated catalogue and key to the species based on adults are presented
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
4. Revision of the genera Anisarthrocera, Rhampholyssa and Rhampholyssodes, description of the new genus Somalarthrocera and a phylogenetic study of the tribe Cerocomini (Coleoptera: Meloidae)
- Creator:
- Turco, Federica and Bologna , Marco A.
- Type:
- article, model:article, and TEXT
- Subject:
- Meloidae, blister beetles, Cerocomini, Anisarthrocera, Rhampholyssa, Rhampholyssodes, Somalarthrocera, taxonomy, new genus, new species, phylogeny, bionomics, faunistics, and biogeography
- Language:
- English
- Description:
- Four genera of the blister beetle tribe Cerocomini are revised, including the new genus Somalarthrocera. The genera Rhampholyssa Kraatz, 1863 and Somalarthrocera comprise two species each, whereas Anisarthrocera Semenow, 1895 and Rhampholyssodes Kaszab, 1983 are monotypic. S. savanicola sp. n. from Kenya is described, S. semirufa (Fairmaire, 1882) comb. n. is proposed, as well as new synonymy: A. batesi (Marseul, 1872) = A. batesi villiersi Kaszab, 1968. Phylogenetic relationships among the six genera of the tribe are defined by a cladistic analysis, which indicates three clades, one basal, represented by the genus Cerocoma Geoffroy, 1762, the second including Anisarthrocera and the pair Rhampholyssa and Rhampholyssodes, and the third including Diaphorocera Heyden, 1863 and Somalarthrocera. Bionomical information available for the four revised genera is summarised. Keys to these genera and to the species of the two non-monotypic genera are presented, as well as diagnoses of genera and species and catalogue of localities. Anisarthrocera is distributed in the northern Persian Gulf, Rhampholyssa in the Turanian depression, Rhampholyssodes is endemic to the eastern Arabian Peninsula, and Somalarthrocera is distributed in Somalia and Kenya. A brief biogeographical analysis of this primarily Palaearctic tribe is also presented.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
5. Revision of the genus Mimesthes (Coleoptera: Meloidae: Mylabrini)
- Creator:
- Bologna, Marco A.
- Type:
- article, model:article, and TEXT
- Subject:
- taxonomy, Coleoptera, Meloidae, Mimesthes, new species, key, bionomics, and southern Africa
- Language:
- English
- Description:
- The species of the mylabrine genus Mimesthes are revised and a new species (M. karooensis) is described from the South African Karoo. The systematic position of the genus is also discussed and an identification key to the species is proposed. Geographical distribution and habitat preferences, as well as other bionomic features, are summarised.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
6. Revision of the genus Teratolytta (Coleoptera: Meloidae)
- Creator:
- Bologna, Marco A. and Di Giulio, Andrea
- Type:
- article, model:article, and TEXT
- Subject:
- Coleoptera, Meloidae, Teratolytta, key, catalogue, synonymy, new species, distribution, larval morphology, and courtship
- Language:
- English
- Description:
- The blister beetle genus Teratolytta, belonging to the tribe Lyttini, is revised and a classification is proposed. Two main sections of the genus - one including five groups of species and the other three groups - are tentatively defined. Four new species from Eastern and Southern Anatolia are described (T. carlae sp. n., T. dvoraki sp. n., T. monticola sp. n., T. taurica sp. n.), and a key to the 17 recognized species is proposed. A diagnosis of the species as well as taxonomic remarks are proposed, and a catalogue of localities is presented. In particular, Teratolytta tricolor (Haag-Rutenberg, 1880) comb. n. is re-established as a distinct species, T. cooensis G. Müller, 1936 is confirmed as a synonym of T. gentilis (Frivaldszky, 1877), T. bytinskii Kaszab, 1957 as a synonym of T. senilis (Abeille de Perrin, 1895), and T. holzschuhi Dvořák, 1983 is proposed as a synonym of T. eylandti Semenow, 1894; some infraspecific forms are referred to the variability of T. gentilis and T. flavipes (Mulsant & Rey, 1858). The first instar larva of T. gentilis is described and figured, and the sexual behaviour of this species is also briefly studied.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
7. The effect of environmental conditions on diapause in the blister beetle, Mylabris phalerata (Coleoptera: Meloidae)
- Creator:
- Zhu, Fen, Xue, Fangsen, and Lei, Chaoliang
- Type:
- article, model:article, and TEXT
- Subject:
- Meloidae, Mylabris phalerata, temperature, photoperiod, soil water content, larval diapause, diapause intensity, and sensitive stage
- Language:
- English
- Description:
- In the field, the blister beetle Mylabris phalerata Pallas (Coleoptera: Meloidae) undergoes larval diapause in the ground, which lasts for nearly six months. The effect of the soil environment on this diapause was examined. Final instar larvae kept at temperatures of >= 26°C do not enter diapause and continued to develop regardless of the soil water content and photoperiod. Below 25°C the final instar larvae entered diapause regardless of soil water content and photoperiod. The early stages, particularly L2, appeared to be more important for diapause induction than the later stages. However, the other instars were also sensitive. Temperature, rather then photoperiod was the main factor influencing pupal duration.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public