Forum Entomologi Italiani

Lo so, l'immagine e' orribile e mi scuso - e' molto riflettente (con tanti puntini sia sulle elitre che sul pronoto) e non sono riuscito a fare di meglio. Lunghezza sui 10 mm - Tarsi 5-5-5 quindi non penso sia un Tenebrionidae, ma piu' in la' non so andare!

Dovrebbe essere un Lucanidae, simile ai nostri Platycerus, ma non conosco la fauna del Nord America.

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Carlo Arrigo

"Solo un entomologo può capire il piacere da me provato nel cacciare per ore in qua e in là, sotto il sole cocente, tra i rami e i ramoscelli e la corteccia degli alberi caduti"
Alfred Russel Wallace

Caro Carlo..che piacere risentirti!
E hai proprio ragione.. non so come sia riuscito a non capirlo!
E' un Platycerus quercus (Weber, 1801) !

Grazie mille

Andrea

A mia (molto) parziale scusante: l'ho trovato in una trappola a caduta innescata con pezzetti di pollo (ovviamente stavo cercando carabidi). Cosa ci facesse li' un lucanide non riesco a capirlo!

Platycerus cribripennis VAN DYKE, 1928
USA : Oregon, California [Monterrey Co.--36°30N-121 °50W (Tassajara*), Yosemite National Park--37°45N-1 19°30W]
Platycerus oregonensis WESTWOOD, 1844
Canada : British Columbia : Queen Charlotte I. : Massett, 53°57N-132°05W
Canada : British Columbia : Vancouver I., 49°22N-12 5°23W
USA : Washington : Westport--46°50N-124°15W, Grayla nd--46°45N-124°10W, Olympia--47°10N-122°50W, Seattl e--47°36N-122°21W,
Renton--47°30N-122°19W--Cedar Grove, Bothell--47°46 N-122°19W, Puyallup--47°15N-122°15W, King Co. (Ceda r Mts., Green River
George), Manchester, North Skokomish River
USA : Oregon (TYPUS of Platycerus oregonensis WESTWOOD).
USA : Oregon [Lincoln Co. (Waldport--44°30N-124°10W , Alsea--44°25N-123°30W, Alsea Mt.), Corvallis--44° 30N-123°20W, Murphy
Co.-- 42°20N-123°20W (Mary's Peak), McMinnville--45 °15N-123°15W, Gearhart--42°30N-120°50W, Blue Mts.-- 45°N-118°W (Tollgate
Road), Baker Creek, Breitenbush, Josephine Co., Taft
USA : California : Mendocino Co.--39°30N-123°45W, B ranscomb--39°40N-123°35W, Marin Co. (Muir Woods Nat . Park.--37°50N-
122°40W)
USA : California : Berkeley, 37°55N-122°15W, 19-X-1 991 (1 male, 1 female citated by Mizunuma & Nagai 1994).
USA : California : Oakland, 37°50N-122°15W : Strawb erry Creek, 15-XI-1986 (1 male, 1 female citated by Mizunuma & Nagai 1994).
USA : California : Alameda Co. : Crow Canyon
USA : California : Alameda Co. : Leone Heights
USA : California : Alameda Co. : Alameda, 37°45N-12 2°15W, V-1972 (1 male citated in Mizunuma & Nagai 1 994).
USA : California : Yosemite Valley--37°45N-119°30W, Mills College
USA : California (TYPUS of Platycerus chalybaeus CASEY).

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

Thanks for the information Jan!
As you pointed out, those 2 species only live West of the Rocky Mountains.
In the East there is only one species: Platycerus quercus (sometimes incorrectly referred to as Platycerus virescens)

https://unsm-ento.unl.edu/Guide/Scaraba ... cerus.html
https://unsm-ento.unl.edu/Guide/Scaraba ... ercus.html

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

You are right, there is also Platycerus depressus, but in the East it lives in Canada, somewhat North of the Finger Lakes region where I live. It is present in some middle states of the US, however

Thanks again !

Unfortunately, species from this area are unavailable to me and are missing from my collection.

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae