Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 13 Jan 2018, 10:46

Found dead, July 12th 2005. [Catalonia: Girona: Beuda: 400 m a.s.l.]. Body length about 10 mm (= 208/20). Front wing length 8 mm (= 165/20).
I got to Osmia (Helicosmia) following different keys (including UK Bees key Bwars for genus, Michener for subgenus, Pauly for Belgium species).
It looks similar to Osmia leaiana, but:
a) The edge of the clip is straight or a bit sinuated, with a short apical tooth (not two teeth).
b) The scopa hair of the gaster is dark brown, not orange, and I don’t think that over time they get dark.

Which is the best subgenus key for Osmia?

A full resolution picture is here:
https://www.flickr.com/photos/47899925@ ... ed-public/
Attachments
Osmia leaiana 20050712 f MTm.jpg
Last edited by rafael_carbonell on 23 Apr 2018, 02:24, edited 5 times in total.
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Re: Osmia not leaiana from NE Iberia

Postby Darek Ogrodnik on 13 Jan 2018, 15:24

I think this is Osmia melanogaster or close (labialis?) ==> Osmia cf. melanogaster :D
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Re: Osmia not leaiana from NE Iberia

Postby rafael_carbonell on 13 Jan 2018, 18:20

Thank you very much, Darek !! :D :D :D
I'm happy it can be identified.

1) From Helicosmia subgenus, do you know which keys would be more appropiate?
2) Which characteristics should be necessary to get to that species?

At least Benoist 1931 is online: (Osmia melanogaster as Osmia notata)=Benoist, R. (1931) Les osmies de la faune française (Hymenopt. Apidae). Annales de la Société Entomologique de France, 100, 23-60:
http://gallica.bnf.fr/ark:/12148/bpt6k5 ... caise.zoom


Best wishes,

Rafael
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby rafael_carbonell on 15 Jan 2018, 22:46

Found dead, July 12th, 2005. [Catalonia: Girona: Beuda: 400 m a.s.l.]. Body length about 10 mm (= 208/20). Front wing length 8 mm (= 165/20).

HEAD:
Antenna with 12 segments. Face without outings or horns. Tegument on the black face, with white hairs. Depression across mandibular base deep and abruptly set off almost vertically from adjacent flat mandibular surface. Mandibles short, widening towards apex; at rest, upper edge of mandibles fitting closely against edge of clypeus. Labrum longer than wide but not projecting below apices of closed mandibles; labrum with long and erect hairs, dark brown colored. Tongue long, pointed at apex. Head without small depression immediately behind lower end of eye. Apical edge of clypeus arched, with a tooth in the middle. Orange hairs covering parts of the mandibles and below clypeal margin; those beneath clypeal margin arranged in four tufts: two narrow tufts at the middle and two broad ones at sides.

MESOSOME:
Mesosome with clear hairs. Thorax long: scutal length (= 51/20 mm) less than intertegular distance (= 61/20 mm). Scutum with parapsidal lines punctiform, short (=7/40 mm), at most one fifth as long as tegula (=37/40 mm), appearing as a raised, flattened area usually distinct from surrounding punctures. Posterolateral corner of scutum with strong marginal carina, pubescence absent lateral to carina. Anterior edge of metanotum below level of most of scutellum, scutellar surface curved down to margin of metanotum. Rear end of scutellum without teeth. Propodeal area subvertical and smooth.

METASOME:
Metasome rounded up convexly dorsally. First tergite of gaster more-or-less smoothly curved from dorsal surface to anterior face, without a distinct transverse keel. Dark brown or black scopa present underside of gaster. Tergites apically with white haired bands, mostly at sides.

WINGS: Forewing wing with two submarginal cells. Vein 2m-cu meets M opposite or pre-furcal second submarginal cell. Stigma almost twice as long as wide.

LEGS: Legs black, without yellow markings. Arolium present between the tarsal claws. Claws simple.

Determination following Bwars Book, 2012, Michener 2000, Pauly 2015 Megachilidae for Belgium.
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby Christian on 17 Jan 2018, 20:29

Always difficult with these descriptions, and also we do not have any expert for Mediterranean bees here.

Best wishes, Christian
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby Darek Ogrodnik on 20 Jan 2018, 12:41

For Megachilidae I use only Polish key (Banaszak, Romasenko, Cierzniak 2001). http://www.biomap.pl/en/getpdf/KdOOP_Hy ... nr_161.pdf
Osmia melanogaster doesn't occur in PL, yet it is included in the key as a potential species; the most important features of O. melanogaster females are clypeus(shape of the lower edge + punctures), propodeum structure(esp. metapostnotum), black scopa, lack of apical hair bands on the tergites(in contrast to e.g. O. caerulescens, gallarum and many others) and your specimen fits this description. O. notata is different species and that French key includes not only Osmia but also Hoplitis.
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby rafael_carbonell on 25 Jan 2018, 23:51

Many thanks, Darek :D

I have more or less google translated and understood the polish key and it has no contradictions. The shape of metapostnotum and clypeus drawings are exact as mine.

The problem is that in Iberian peninsula there a lot of other Osmia (Helicosmia) species, some of which are not included in Central European keys:
- Osmia cinctella (probable in Spain)
- Osmia clypearis
- Osmia dimidiata
- Osmia dusmeti
- Osmia frieseana
- Osmia heteracantha
- Osmia labialis
- Osmia latreillei
- Osmia nasoproducta
- Osmia niveata
- Osmia niveocincta
- Osmia notata
- Osmia signata
- Osmia tunensis
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby Darek Ogrodnik on 26 Jan 2018, 12:02

Most of them look different than melanogaster, e.g. latreillei has "modified" mandibles, tunensis looks similar to aurulenta, signata and notata have distinctive white hair bands on tergites, niveata has yellow scopa and different clypeus and dimidiata partially whitish scopa. Osmia labialis is the sister species to melanogaster and even they have been synonimized, unfortunately I don't know the differences between these 2 species.
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby rafael_carbonell on 26 Jan 2018, 23:08

Thanks again, Darek

I have got from Biodiversity Heritage Library the original description of some Osmia (Helicosmia) species such as:

O. labialis:
Pérez, J. (1879) Contribution a la faune des apiaires de France. Actes de la Société Linnéenne de Bordeaux, 33, 119-229.
https://www.dropbox.com/s/zk91xm7wkezgr ... e.pdf?dl=0
A caption of 182-183-184 pages:
https://www.dropbox.com/s/lfv1ca66w58c4 ... 4.jpg?dl=0
There Pérez says the scopa is "rousse et non noire""

O. cinctella
Dours, L. (1873) Hyménoptères du bassin méditerranéen. Andrena (suite). Revue et Magasin de Zoologie Pure et Appliqué, ser. 3, 1, 274-325, pl. 14.
Here page 296:
https://www.dropbox.com/s/33a1hs9spvkgp ... 6.jpg?dl=0
"palette ventrale noire" but from other característics seems is not this specimen. Could somebody confirm that?

O. clypearis
Morawitz, F. (1871) Neue suedeuropaeische Bienen. Horae Societatis Entomologicae Rossicae (St. Petersburg), 8, 201-231.
Page 204 caption:
https://www.dropbox.com/s/291d17kzskcy3 ... 4.jpg?dl=0
Could somebody confirm that is not clypearis our specimen?

O. heteracantha
Pérez, J. (1895) Espèces nouvelles de mellifères de Barbarie (diagnoses préliminaires). Gounouihou, Bordeaux, 64 pp.
I could not get this book :(
Other authors confirm this species is not O. sogdiana (p. 884) but they don't write why :evil:
Zanden, G. van der (1996b) Neue Arten und Synonyme bei paläarktischen Bauchsammlern (Hymenoptera aculeata, Apoidea, Megachilidae). Linzer Biologische Beiträge, 28, 883-895.
Has anybody the Pérez 1895 original description?
Could somebody confirm that is not clypearis our specimen?

Other Osmia (Helicosmia) species from Spain that are not this specimen:

O. dusmeti (clypeus very different)
Zanden, G. van der (1998a) Neue paläarktische Arten aus der Familie der Megachilidae (Insecta, Hymenoptera, Apoidea). Linzer Biologische Beiträge, 30, 523-527 @ page 525-526 and Abb. 3 @ 527:
https://www.zobodat.at/pdf/LBB_0030_2_0523-0527.pdf

O. frieseana
Ducke, A. (1899) Neue Arten und Varietäten der Gattung Osmia Panz. Entomologische Nachrichten (Berlin), 25, 211-215.
Here 213:
https://www.dropbox.com/s/dfu3uj6a1asjb ... 3.jpg?dl=0

O. nasoproducta
Ferton, C. (1909) Notes détachées sur l’instinct des hyménoptères mellifères et ravisseurs (5ème série) avec la description d’une espèce nouvelle. Annales de la Société Entomologique de France, 78, 401-422.
Here 406-407:
https://www.dropbox.com/s/0bubiokc14ey4 ... 7.jpg?dl=0

O. niveocincta
Pérez, J. (1879) Contribution a la faune des apiaires de France. Actes de la Société Linnéenne de Bordeaux, 33, 119-229.
Here 184:
https://www.dropbox.com/s/uljdsf7qt68s5 ... 4.jpg?dl=0
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby Darek Ogrodnik on 27 Jan 2018, 16:31

https://blogs.ethz.ch/osmiini/2009/09/2 ... anogaster/

So if O. labialis has red scopa this one cannot be labialis
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby Darek Ogrodnik on 29 Jan 2018, 06:54

According to the description O. clypearis has different clypeus(with 2 teeth) and unlike melanogaster it's got blue/green shine.
The only species with such clypeus, apart from melanogaster, is labialis. I'm sure O. melanogaster is correct! :D
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Re: Osmia from NE Iberia --> Osmia cf. melanogaster

Postby rafael_carbonell on 29 Jan 2018, 20:02

:D :D :D
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Re: Osmia from NE Iberia --> Osmia melanogaster

Postby rafael_carbonell on 22 Apr 2018, 23:15

Studying again my Osmia melanogaster specimens and get in crisis now, I have doubts with O. niveocincta:

a) Benoist 1931 includes O. niveocincta: that species description fits well with my "melanogaster" specimen, also the original description Pérez 1879 (https://www.dropbox.com/s/uljdsf7qt68s5%20...%204.jpg?dl=0)
b) Benoist 1931 includes notata (some authors consider that synonym of melanogaster, some others not) and this fits worst ("Segments dorsaux de l'abdomen à taches latérales mal délimitées", "clypeus tronqué, non émarginé")
c) If notata sensu Benoist 1931 is not melanogaster, how is possible that a common french species is not in that work?
d) Banaszak, Romasenko, Cierzniak 2001 includes melanogaster (the description fits well) but not niveocincta
d) Schmiedenecht considers melanogaster that has blue shine "abdomen coeruleum vel viridi-aeneum"
e) I have not "Tkalcu, B. (1975c) Revision der europäischen Osmia (Chalcosmia)-Arten der fulviventris-Gruppe (Hymenoptera: Apoidea: Megachilidae). Vestnik Ceskoslovenske Spolecnosti Zoologicke, 39, 297-317." which may be has the solution (or other literature I have not access, as Amiet et al 2004, Scheuchl 1996).
May be the answer is here: Zanden, G. van der (1985) Ergebnisse der Untersuchungen der von R. Benoist beschriebenen Osmia-Arten mit Liste seiner Schriften (Hymenoptera, Apoidea, Megachilidae). Reichenbachia (Dresden), 23, 47–72.

The big question is, which is the difference of the females of niveocincta and melanogaster?
Attachments
Osmia melanogaster 20180415 f (0)mn.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster

Postby rafael_carbonell on 22 Apr 2018, 23:35

Some pictures of living specimens of this spring (at least three different specimens appeared indoors):
Attachments
Osmia melanogaster 20180415 f (3)rtm.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster

Postby rafael_carbonell on 22 Apr 2018, 23:39

...
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Osmia melanogaster 20180419 2 (5)rt.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster

Postby rafael_carbonell on 22 Apr 2018, 23:40

...
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Osmia melanogaster 20180419 2 (3)m.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby Darek Ogrodnik on 23 Apr 2018, 15:24

Ok, what does the name "niveocincta" mean? :wink:
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 23 Apr 2018, 16:59

I don't know for sure, but may be "stripes like snow coloured" or (google translator from latin) "surrounded by snow"

Regards,

Rafael
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 23 Apr 2018, 22:54

The propodeum with shiny polished central area (female collected April 18th, 2018)
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Osmia melanogaster 20180415 f (13)rt.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby Darek Ogrodnik on 24 Apr 2018, 09:30

rafael_carbonell wrote: "stripes like snow coloured" or (google translator from latin) "surrounded by snow"

Right, and here is the answer to your "big question" :wink: O. niveocincta has snow-white hair bands across abdominal terga and also snow-white pile on the head and thorax, which makes it more distinctive-looking than melanogaster(which has darker, brownish body pile without well-developed abdominal bands)
Compare :arrow: http://www2.pms-lj.si/andrej/osmmel.htm
https://sites.google.com/site/beesofrom ... inola-1808
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 24 Apr 2018, 16:24

So Derek, the living specimens of female O. melanogaster you show me are quite different from my specimens, and so, you are suggesting me is O. niveocincta.

Today I also got the answer of another specialist [...], but he is telling me is O. melanogaster, :roll: "The species is Osmia melanogaster. Characters distinguishing it from Osmia niveocincta are the lacking white hair bands laterally on the tergites and the presence of teeth at the apical margin of the clypeus." I think he just saw the mounted specimen collage, which is old, with not to much white haire, and also my binocular pictures turn to brown. In all my specimens there are white hair bands laterally and a tooth in the apical margin, so I'm thinking he is wrong.
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 24 Apr 2018, 20:09

The female clypeus of melanogaster from Banaszak, Romasenko, Cierzniak 2001
Attachments
melanogaster female clypeus.jpg
melanogaster female clypeus.jpg (9.93 KiB) Viewed 97 times
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 24 Apr 2018, 20:11

Clypeus detail with one prominent tooth in the middle; also meshes of orange hair similar to that of leaiana
Attachments
P1150574m.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 24 Apr 2018, 20:14

... mandibles covered with a brown velvet
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P1150571sst.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 24 Apr 2018, 20:29

...
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P1150575tr.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on 24 Apr 2018, 20:42

... and the snowy surround around mesosoma...
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P1150578rt.jpg
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby Darek Ogrodnik on Yesterday, 06:00

rafael_carbonell wrote:So Derek, the living specimens of female O. melanogaster you show me are quite different from my specimens, and so, you are suggesting me is O. niveocincta.

No, I mean O. niveocincta looks different than your specimen and the living O. melanogaster I showed you looks like yours.
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby Darek Ogrodnik on Yesterday, 14:59

The first specimen(from 2005) is O. melanogaster. Note different shape of the lower clypeus margin of the two species-a bit more concave in melanogaster. I linked the O. melanogaster photos so you could compare it with your niveocincta and the first specimen.
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Re: Osmia from NE Iberia --> Osmia melanogaster (or niveocincta?

Postby rafael_carbonell on Yesterday, 16:51

Yes!

Andreas Müller is telling me the same: Your pictures show that the species is Osmia melanogaster. Osmia niveocincta has a straight apical margin without any teeth and the white lateral hair bands are dense, snow-white and well defined. [so mine are not snowy-white and well-defined]

The problem is that there are only two pictures on the web of niveocincta and I have not any drawing at all

Dziękuję bardzo


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