1,721,084 research outputs found
The Tenebrionidae Latreille, 1802 (Coleoptera: Tenebrionoidea) of the Philippines. Part 2. Two new species of the genus Gauromaia Pascoe, 1866 (Cnodalonini) from Mindanao Island
No full textFIGURE 1. Distribution map of known Gauromaia species in the Philippines.Published as part of Medina, Milton Norman, Cabras, Analyn & Ruzzier, Enrico, 2022, The Tenebrionidae Latreille, 1802 (Coleoptera: Tenebrionoidea) of the Philippines Part 2. Two new species of the genus Gauromaia Pascoe, 1866 (Cnodalonini) from Mindanao Island, pp. 278-284 in Zootaxa 5178 (3) on page 279, DOI: 10.11646/zootaxa.5178.3.6, http://zenodo.org/record/702629
Fig. 1 in New Species ofAinuLewis, 1894 (Coleoptera: Tenebrionidae) from Southeastasia
No full textFig. 1. Ainu andoi, habitus, dorsal and ventral views.Published as part of Ruzzier, Enrico, 1894, The Coleopterists Bulletin 1894 (4) on pages 659-662, DOI: 10.1649/0010-065X-68.4.659, http://zenodo.org/record/536935
A preliminary catalogue of the Coleoptera (Hexapoda: Insecta) of the Monte Netto Regional Park (Lombardy NE Italy)
No full textMola, Livio, Ruzzier, Enrico, Deiaco, Claudio, Agosti, Mauro, Faccoli, Massimo, Matějíček, Jan, Farina, Laura, Diotti, Luciano, Rocca, Francesca Della (2023): A preliminary catalogue of the Coleoptera (Hexapoda: Insecta) of the Monte Netto Regional Park (Lombardy NE Italy). Zootaxa 5293 (1): 1-44, DOI: 10.11646/zootaxa.5293.1.1, URL: http://dx.doi.org/10.11646/zootaxa.5293.1.
Fig. 3. Ainu andoi. A in New Species ofAinuLewis, 1894 (Coleoptera: Tenebrionidae) from Southeastasia
No full textFig. 3. Ainu andoi. A) Antenna, B) Protibia, C) Mesotibia, D) Metatibia.Published as part of Ruzzier, Enrico, 1894, The Coleopterists Bulletin 1894 (4) on pages 659-662, DOI: 10.1649/0010-065X-68.4.659, http://zenodo.org/record/536935
Fig. 1. A in A New Species of Lycidomorda Horák, 2007 (Coleoptera: Mordellidae: Mordellistenini) from Sulawesi (Celebes: Indonesia)
No full textFig. 1. A) Lycidomorda kovalevi, holotype, dorsal view, B) L. kovalevi, holotype, lateral view, C) Lycidomorda sp.Published as part of Ruzzier, Enrico, 2018, A New Species of Lycidomorda Horák, 2007 (Coleoptera: Mordellidae: Mordellistenini) from Sulawesi (Celebes: Indonesia), pp. 93-95 in The Coleopterists Bulletin 72 (1) on page 94, DOI: 10.1649/0010-065X-72.1.93, http://zenodo.org/record/483681
Figs. 6–7. Ainu species, aedeagi. 6 in New Species ofAinuLewis, 1894 (Coleoptera: Tenebrionidae) from Southeastasia
No full textFigs. 6–7. Ainu species, aedeagi. 6) A. andoi, dorsal and lateral views; 7) A. grandis, dorsal and lateral views, original drawings from Ren and Yuan (2005).Published as part of Ruzzier, Enrico, 1894, The Coleopterists Bulletin 1894 (4) on pages 659-662, DOI: 10.1649/0010-065X-68.4.659, http://zenodo.org/record/536935
The Tenebrionidae Latreille, 1802 (Coleoptera: Tenebrionoidea) of the Philippines. Part 3. Description of a new species of Malayaplamius Masumoto, 1986 (Cnodalonini) and further faunistic records
No full textThis paper reports for the first time on the genus Malayaplamius Masumoto, 1986 in the Philippines and provides the description of Malayaplamius bejsaki Ruzzier, sp. nov. (type locality: Mt. Kitanglad - Bukidnon). In addition, new faunistic data pertaining to the Philippine fauna are provided, in combination with photos of the species
New species of Tenebrionidae Latreille, 1802 (Coleoptera: Tenebrionoidea) from the Philippines
No full textAndo, Kiyoshi, Ruzzier, Enrico (2016): New species of Tenebrionidae Latreille, 1802 (Coleoptera: Tenebrionoidea) from the Philippines. Zootaxa 4175 (5): 480-486, DOI: http://doi.org/10.11646/zootaxa.4175.5.
Ecologia ed evoluzione delle setole staccabili nei coleotteri dermestidi: implicazioni nel controllo degli infestanti e nella salute pubblica
Full text linkLe setole staccabili sono setole che possono essere facilmente rimosse attraverso una semplice stimolazione meccanica e che sono evolute quale struttura difensiva contro la predazione in almeno quattro gruppi di artropodi. Questa categoria di setole è suddivisa in due gruppi morfo-ecologici: peli urticanti in Lepidotteri (Nodotontidae: Thaumetopoeinae, Erebidae, Saturniidae, Zygenidae) e Theraphosidae (sottofamiglia Theraphosinae), e setole “ad ancora” in Polyxenidae millepiedi (Myriapoda): Polyxenidapoda e larve di Dermestidae (Insecta: Coleoptera).
Le hastisetae sono un gruppo specifico di setole staccabili che caratterizzano le larve dei Megatominae (Coleoptera: Dermestidae). Queste setole sono presenti sia sui tergiti toracici che addominali della larva e costituiscono una difesa primaria contro predatori invertebrati. Le hastisetae, singole od aggregate, fungono da trappola biomeccanica in grado di intrappolare processi cuticolari (spine e peli) ed appendici (antenne, zampe).
Si ritiene che questo sistema difensivo si sia evoluto principalmente per contrastare la predazione da parte di invertebrati, tuttavia è stato osservato come le hastisetae possano riguardare anche i vertebrati. Sebbene le informazioni sugli impatti verso predatori vertebrati siano limitate, le hastisetae si sono dimostrate essere una possibile minaccia per la salute umana in qualità di contaminanti di prodotti (cibi e tessuti), di ambienti lavorativi ed abitazioni; in particolare, l'esposizione alle hastisetae sembrerebbe causare reazioni allergiche e l'insorgenza di eruzioni cutanee, asma, congiuntivite ed infiammazione dell'apparato digerente.
Una revisione della letteratura passata e recente sulle larve di dermestidi ha rivelato come, nonostante le hastisetae siano suggerite come uno dei caratteri distintivi nell'identificazione delle specie, si sappia molto poco sulla loro ultrastruttura, evoluzione e meccanismo d'azione. Inoltre, nonostante il loro apparente interesse medico, non si conosce praticamente nulla circa la loro nocività rispetto a quanto noto per le setole urticanti di lepidotteri e tarantole.
La presente ricerca definisce lo stato dell’arte circa le conoscenze sulle hastisetae e si prefigge di colmare le lacune conoscitive esistenti.
La prima parte del lavoro è dedicata all'indagine della morfologia esterna e microstrutturale delle hastisetae; vengono descritte ed illustrate in dettaglio l'inserzione su tegumento, pedicello, fusto e parte apicale dell’hastiseta; inoltre, per la prima volta vengono documenti comportamenti di difesa attiva delle larve basati su hastisetae.Detachable setae are true setae that can be easily removed with any kind of mechanical stimulation and that evolved as a defensive structure against predation in at least four groups of Arthropoda. The class is subdivided in two main morpho-ecological groups: urticating hairs of Lepidoptera (Nodotontidae: Thaumetopoeinae, Erebidae, Saturniidae, Zygenidae) and the spider family Theraphosidae (subfamily Theraphosinae), and anchor-like setae of Polyxenidae millipedes (Myriapoda: Polyxenida) and larvae of Dermestidae (Insecta: Coleoptera).
Hastisetae are a specific group of detachable setae characterizing the larvae of Megatominae (Coleoptera: Dermestidae). These setae are located on both thoracic and abdominal tergites and they are the primary defense of the larva against invertebrate predators.
Hastisetae, single or aggregate, function as an extremely efficient mechanical trap, based on an entangling mechanism of cuticular structures (spines and hairs) and body appendages (antennae, legs and mouthparts). It is believed that this defensive system evolved primarily to contrast predation by invertebrates, however it has been observed that hastisetae may affect vertebrates as well. Although information on the impacts of vertebrate predators of the beetles is limited, hastisetae have been shown to be a possible threat for human health as an important contaminant of stored products (food and fabric), work and living environment; in particular, the exposure to hastisetae seems to cause allergic reactions and the insurgence of skin rashes, asthma, conjunctivitis, and digestive system inflammation.
A review of past and recent literature on dermestid larvae has revealed that despite these structures are vaguely indicated as one of the distinctive characters in species identification, very little is known about their ultrastructure, evolution, and mechanism of action. Furthermore, despite their apparent medical interest almost nothing is known about their harmfulness in comparison to urticating hairs of lepidoptera and tarantulas.
The present work provides the state of knowledge on hastisetae in Dermestidae and develops a research line intended to bridge the existing knowledge gaps.
The first part of the research is dedicated to the investigation of the fine morphology of the external microstructure of the hastisetae; the insertion on integument, the pedicel, the shaft, and the apical head are described and illustrated in detail, and the first observations of active defensive behavior based on hastisetae are recorded and presented.
The second part is devoted to the ultrastructure investigation of the hastiseta with a major focus on the socket and subcuticular structure with the intent to investigate and shed a light on a possible secretory function associated with hastisetae.
Possible implications to the systematics of skin beetles are proposed based on the results of the study. Furthermore, a new morphological and functional interpretation of the hastiseta and the associated cellular is provided, suggesting possible future research developments
A new species of Calycina (Coleoptera Mordellidae) from Papua New Guinea
Full text linkNel presente lavoro viene descritta Calycina poggii n. sp. (♀, loc. typ.: Papua nuova Guinea, Flyriver) ed è fornita una chiave delle specie mondiali
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