Dienerella

Abstract: In order to contribute to the knowledge of beetles (Coleoptera) of the mountainous region of Morocco, Talassemtane National Park (Western Rif, Chefchaouen district, Morocco) was surveyed. This is an exceptional protected area of the Mediterranean Intercontinental Biosphere Reserve (RIBM). The checklist was made using different traps combined with active periodical searches during 2013–2015. A total of 153 beetles belonging to 19 species from four subfamilies (Cryptophagidae: Cryptophaginae and Atomariinae; Latridiidae: Latridiinae and Corticariinae) was collected. Dienerella (Cartoderema) talassemata, a new species (Coleoptera: Latridiidae) was compared to other morphologically related species. One species is recorded for the first time for North Africa; three species are new records for Morocco. In addition, amongst the species listed, three are endemic to Morocco: Dienerella talassemtana sp. n., Caenoscelis humifera and Dienerella besucheti.

Abstract: An annotated catalogue of minute brown scavenger beetles (Coleoptera: Latridiidae) of the Latvian fauna is presented. In total, 54 species representing 10 genera and two subfamilies are hitherto known in Latvia. Two species of them, Corticaria fulva (Comolli, 1837) and Dienerella costulata (Reitter, 1877), are known only from records that are more than 100 years old, and their occurrence in the Latvian fauna needs to be reconfirmed. Dienerella argus (Reitter, 1884) has been removed from the catalogue. During the study, all available published sources of relevant information were reviewed and analyzed. The research history of these beetles in Latvia is surveyed. The recent Latvian fauna of Latridiidae is represented by 10 chorotypes. Species of European (10 or 18.52%), Subcosmopolitan (11 or 20.37%), and Holarctic (9 or 16.67%) chorotypes are considered to be predominant. New data on the distribution of seven insufficiently known species are given.

Abstract: Adult and larva Dienerella argus (Reitter) (Coleoptera: Latridiidae) feed on fungi and are frequently found in indoor, moldy areas. The basic biology of this species, other than its feeding habits, has not been determined. In this study, the developmental parameters of the beetle were investigated using dried hyphae and conidia from three fungi that are common in living areas. The developmental periods of the beetle on Cladosporium cladosporioides, Penicillium citrinum, and P. decumbens were examined at 15.5 ± 0.1, 19.4 ± 0.6, 23.5 ± 0.4, 27.3 ± 1.0, and 31.7 ± 2.4 °C (mean ± SD) under dark conditions. The lower developmental temperature threshold (T0 ± SE) and thermal constants (K ± SE) calculated from egg to adult emergence were 9.6 ± 1.15 °C and 545.5 ± 43.3 degree days (DD), 9.1 ± 0.35 °C and 483.1 ± 12.3 DD, and 10.7 ± 0.35 °C and 378.5 ± 9.3 DD on C. cladosporioides, P. citrinum, and P. decumbens, respectively. These developmental parameters indicate that this beetle can breed year-round in indoor areas that are in air-conditioned facilities. Based on the accumulated daily mean temperature above T0 (=10.7 °C on P. decumbens) in the garret, where the outbreak of D. argus had occurred, the number of generations per year was estimated at approximately eight.

Abstract: Faunal data on 36-minute brown scavenger beetle (Coleoptera: Latridiidae) species from Latvia are presented. In total, 1102 specimens were reviewed. Five species, Dienerella (Cartoderema) ruficollis (Marsham, 1802), Stephostethus alternans (Mannerheim, 1844), Stephostethus caucasicus (Mannerheim, 1844), Corticaria lapponica (Zetterstedt, 1838), and Melanophthalma maura Motschulsky, 1866 are recorded in Latvia for the first time. Actual faunal data on Enicmus fungicola Thomson, 1868, Stephostethus rugicollis (Olivier, 1790), Corticaria ferruginea Marsham, 1802, Corticaria longicornis (Herbst, 1793), and Corticaria porochini Johnson, 2007 are presented and occurrence of these species in local fauna is confirmed. These records included that a total of 55 latridiid species are presently known in Latvian fauna. Peržiūrėti 1102 vabalai, priskiriami 36 Latvijos slaptavabalių (Coleoptera: Latridiidae) rūsims. Penkios rūsys, t.y. Dienerella (Cartoderema) ruficollis (Marsham, 1802), Stephostethus alternans (Mannerh...