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Dianthidium singulare (Cresson, 1879)
Anthidium singulare Cresson, 1879; Dianthidium singulare var perluteum Cockerell and Cockerell, 1904; Dianthidium singulare melanognathum Cockerell, 1925

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Dianthidium
Subgenus: Dianthidium

Dianthidium singulare, f, back, Mariposa, CA ---.
© Copyright source/photographer · 5
Dianthidium singulare, f, back, Mariposa, CA ---.

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Dianthidium singulare, f, face, Mariposa, CA ---.
© Copyright source/photographer · 5
Dianthidium singulare, f, face, Mariposa, CA ---.
Dianthidium singulare, f, left side, Mariposa, CA ---.
© Copyright source/photographer · 5
Dianthidium singulare, f, left side, Mariposa, CA ---.

Dianthidium singulare, male, T7
© Kimberly Huntzinger, 2007 · 1
Dianthidium singulare, male, T7
Identification
Extracted from THE POLLEN-COLLECTING BEES OF THE ANTHIDIINI OF CALIFORNIA (Hymenoptera: Megachilidae) by Grigarick A., A. (1968).


This is the largest species of this genus found in California. The bright yellow maculations of singuČlare become more extensive from northern to southČern California, particularly on the metasomal bands. Two other subspecies were created on this basis, but the variation of color pattern does not warrant sub-specific designation. The apical margins of the terga show a tendency to be reddish, but this is also variČable. Both sexes of D. singulare have the lateral marČgins of the terga decreasingly inflated from II to V (fig. 203). D. cressonii (Dalla Torre) is very closely related to singulare but has the sides of the terga less inflated in both sexes and the apical margin of ter-gum VI of the female is less transverse than singulare. D. cressonii occurs in Colorado and Nevada and may eventually be found in eastern California. D. singulare is limited in its California distribution to the mountains of the eastern and southern part of the state. Although described from Nevada the species has been collected more frequently in CaliČfornia, with 25 males and 24 females being observed from this state. The nest of this species has been observed by Michener and Timberlake on the side or face of a rock. They were built with resin and pebbles and consisted of a single cell. The limited host records of this bee fall mainly in the family Compositae.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apiaceae  Perideridia parishii @ UCRC_ENT (1)
Asteraceae  Chaenactis glabriuscula @ BBSL (1)

Cirsium occidentale @ UCRC_ENT (1)

Erigeron divergens @ BBSL (1)

Solidago californica @ AMNH_BEE (1); BBSL__PUB (1)
Brassicaceae  Erysimum capitatum @ UCRC_ENT (1)
Fabaceae  Lotus grandiflorus @ BBSL__KWC (1)
_  Withheld @ BBSL__YOSE (21); BBSL (24)

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Updated: 2019-01-20 15:46:34 gmt
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