Le système glandulaire tégumentaire du coléoptère myrmécophile Claviger testaceus Preyssler, 1790 (Pselaphidae) The integumentary glandular system of the myrmecophilous beetle Claviger testaceus Preyssler, 1790 (Pselaphidae)

Cammaerts, Roger

doi:10.1007/bf00389904

Cited by 29 publications

(2 citation statements)

References 15 publications

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“…Detailed morphological studies are essential to establish homologies between body structures, detect cases of parallel and reductive evolution, and to reconstruct the phylogeny of this enormously diverse and successful group of rove beetles. So far, particularly unusual and often bizarre morphological modifications have attracted most attention, resulting in characterizing selected structural features of extreme myrmecophiles (Cammaerts, 1973, 1974; Hermann, 1982; Jałoszyński et al, 2020, 2022; Luo, Jałoszyński, et al, 2021; Parker, 2016b) and subterraneous species (Luo, Hlaváč, et al, 2021). Only one free‐living unspecialized pselaphine species, Pselaphus heisei , was a subject of detailed modern morphological study, in which skeletal structures, musculature and other internal organs of the head were characterized (Beutel et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

The thoracic anatomy of Pselaphus heisei (Pselaphinae, Staphylinidae, Coleoptera)

Luo

Jałoszyński

Beutel

2022

Journal of Morphology

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We document external and internal thoracic structures of the free‐living pselaphine beetle Pselaphus heisei (Pselaphitae) using a set of traditional and modern techniques. Like in the specialized myrmecophile Claviger testaceus (Clavigeritae), the skeletal elements of the pro‐ and pterothorax are highly compact, with largely reduced inter‐ and intrasegmental sutures. Features previously listed as synapomorphies of staphylinid subgroups, to which Pselaphinae belong, are confirmed for P. heisei. The only previously proposed thoracic synapomorphy of Pselaphinae, the mesoventral foveae, is likely transformed in P. heisei: we assume that the concavities are directed mesad and internally fused, thus forming a broad channel (“perforation”) extending through the keel‐like median region of the mesoventrite. The prothoracic foveal system is strongly reduced, with only one pair of pits present in front of the procoxae. Their internal invaginations form a transverse ventral endoskeletal bar that stabilizes the prothorax. The condition observed in the free‐living P. heisei is in contrast with previous hypotheses linking the reduction of the foveal system with myrmecophily. Moreover, traces of the mesoventral foveae are even preserved in the highly specialized inquiline C. testaceus. Gland cells are associated with areas of hyaline squamose setae on different body regions, suggesting release of secretions on the ventral side of the head, pro‐ and mesothorax, and abdominal base. Similar specialized setal patches are common in Pselaphini and related groups within Pselaphitae. The prothoracic musculature in P. heisei is more complex than that in the myrmecophilous C. testaceus and the free‐living, unspecialized Creophilus maxillosus (Staphylininae). The metathoracic muscle system is strongly simplified, demonstrating that P. heisei cannot fly, even though wings, some skeletal elements of the flight apparatus, and some small direct flight muscles are preserved. It cannot be fully excluded that indirect flight muscles and thus a functional flight apparatus is preserved in a certain percentage of individuals.

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Section: Introductionmentioning

confidence: 99%

The thoracic anatomy of Pselaphus heisei (Pselaphinae, Staphylinidae, Coleoptera)

Luo

Jałoszyński

Beutel

2022

Journal of Morphology

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“…These setae are associated with pores. In Claviger testaceus the pores are the orifices of glands (CAMMAERTS, 1974). In Colilodion the apex of the apical antennal segment bears a sensillar pit with a raised margin and an erect seta.…”

Section: Introductionmentioning

confidence: 99%

The systematic position of Colilodionini with description of a new species (Coleoptera, Pselaphidae)

Löbl¹

1994

Revue Suisse De Zoologie.

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Setiferous structures of male coleoptera

Faustini

Halstead²

1982

Journal of Morphology

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A scanning electron microscopy study was made of the male setiferous sex patches and analogous structures in 11 families of Coleoptera (Anthribidae, Bruchidae, Ciidae, Cleridae, Coccinellidae, Dermestidae, Leiodidae, Ptinidae, Staphylinidae, Tenebrionidae, and Ostomatidae). These secondary sexual characters appear to have several features in common including relatively long, often ridged, setae, cuticular ducts (frequently cribriform pore plates), and the production of a secretion. It is suggested that these structures may all be concerned with the production, release, and dissemination of pheromones.

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Le système glandulaire tégumentaire du coléoptère myrmécophile Claviger testaceus Preyssler, 1790 (Pselaphidae) The integumentary glandular system of the myrmecophilous beetle Claviger testaceus Preyssler, 1790 (Pselaphidae)

Cited by 29 publications

References 15 publications

The thoracic anatomy of Pselaphus heisei (Pselaphinae, Staphylinidae, Coleoptera)

The thoracic anatomy of Pselaphus heisei (Pselaphinae, Staphylinidae, Coleoptera)

The systematic position of Colilodionini with description of a new species (Coleoptera, Pselaphidae)

Setiferous structures of male coleoptera

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