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Anthidium atripes Cresson, 1879
Anthidium polingae Schwarz, 1931

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Anthidium
Subgenus: Anthidium

Anthidium atripes, male, S8 apex profile, VG
© Kimberly Huntzinger, 2007 · 2
Anthidium atripes, male, S8 apex profile, VG

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Anthidium atripes, female, head, mtg
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, female, head, mtg
Anthidium atripes, female, T5 a, mtg
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, female, T5 a, mtg

Anthidium atripes, male, T7, VG
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, male, T7, VG
Anthidium atripes, male, S6, VG
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, male, S6, VG

Anthidium atripes, male, S7, VG
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, male, S7, VG
Anthidium atripes, male, S8, VG
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, male, S8, VG

Anthidium atripes, female, T6, VG
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, female, T6, VG
Anthidium atripes, female, scopa, mtg
© Kimberly Huntzinger, 2007 · 1
Anthidium atripes, female, scopa, mtg
Identification
Extracted from: Grigarick A.A., & Stange L.A., (1968). The Pollen Collecting Bees of the Anthidiini of California (Hymenoptera: Megachilidae) Bulletin of the California Insect Survey Volume 9.

Anthidium emarginatum var. atripes Cresson, 1879. Trans. Amer. Ent Soc, 7:205. Holotype 6\ Nevada (ANSP). Anthidium polingae Schwarz, 1931. Jour. New York Ent. Soc, 39:315-316; 9, <$. Holotype 9 (Oregon State). NEW SYNONYMY. Taxonomy.—Schwarz, 1928, Jour. New York Ent Soc, 36:388, 9; 1937, Jour. New York Ent. Soc. 45:377-379. Geographical range.—California, Colorado, Nevada, Texas. Calitornia records.—CONTRA COSTA Co.: Antioch, 1 $, IV-21-34 (G. and R. Bohart, CIS); 1 9, VI-18-36 (CIS). INYO CO.: Big Pine Creek, 1 9, VI-11-27, on Astragalus Douglasii var. Parishii (P. Timberlake, UCR). Westgard Pass, summit, 2 3, 4 9, V-27 to VI-15-37, on Astragalus (C Michener, UCR); 3 mi. W, 10 $, 19 9, VI-19-53, on Astragalus (J. MacSwain, CIS). KERN CO.: Devils Den, 1 9, IV-8-51, on Astragalus (P. Hurd, CIS). MONO CO.: Blanco's Corral, White Mts., 10,000 ft., 1 9, VII-14-53 (D. Linsdale, CIS). ORANGE CO.: Upper Santa Ana River, 1 6\ V-29-46 (A. Melander, UCR). RIVERSIDE CO.: Idyllwild, 1 <$, 1 9, V-25-39, on Astragalus (E. Linsley, CIS); 1 9, VI-4-39, on Astragalus (E. Ross, CIS); 6 <$, 2 9, VI-9-40, on Astragalus Douglassi var. Parishii (P. Timberlake, UCR). Keen Camp, San Jacinto Mts., 4 6\ 1 9, V-10-37 (E. Linsley, E. Ross, CIS). Pine Cove, San Jacinto Mts., 1 6, VI-3-39, on Astragalus Douglasii var. Parishii (P. Timberlake, UCR). Pine Flat, San Jacinto Mts., 6 The males can be distinguished from other Anthidium in California except collectum and palmarum by the combination of a prominent black setal brush and the shape of sternum VI, which has the median and lateral lobes broader than long (fig. 41). The broader lateral lobe of tergum VII (subequal to distance separating it from the center spine) and lack of pale reddish maculation on the tegula are features which distinguish male atripes from palmarum. From collectum, the much broader median lobe of sternum VI and bifurcate sternum VIII are differentiating characters. The females have a rather distinctive posterior marginal band (fig. 77) which extends over one-half the width of the tergum and is sinuate. Also, female atripes are usually quite dark with no maculation on the mandible and clypeus, and both sexes typically have the posterior terga all black. This latter feature is seldom found in other species, although occasionally specimens of emarginatum, tenui Horae, and palliventre may approach this condition. There is a tendency for fuller cream or yellow maculations, especially on tergum IV, in southern California.

The majority of 233 specimens (101 $ , 132 ° ) examined from this state were from the Southern California Mountains. A. atripes was also collected on the east slope of the southern part of the Sierras and rarely in the Coast Range as far north as San Francisco Bay.

Biological information is limited to plant visitations in the family Leguminosae.


Names
Scientific source:

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Hosts · map
FamilyScientific name @ source (records)
Fabaceae  Acmispon nevadensis @ UCRC_ENT (1)

Astragalus douglasii @ UCRC_ENT (10)

Astragalus @ UCRC_ENT (11)

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Updated: 2019-10-17 06:33:33 gmt
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