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Ashmeadiella cactorum (Cockerell, 1897)
Heriades cactorum Cockerell, 1897; Ashmeadiella curriei Titus, 1904; Ashmeadiella echinocerei Cockerell, 1911; Ashmeadiella basalis nigra Michener, 1936; Ashmeadiella basalis basalis Michener, 1936; Ashmeadiella (Ashmeadiella) cactorum basalis Michener, 1936, valid subspecies

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Ashmeadiella
Subgenus: Ashmeadiella

Ashmeadiella cactorum, female, face
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, face

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Ashmeadiella cactorum, female, side
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, side
Ashmeadiella cactorum, female, top
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, top

Ashmeadiella cactorum, female, face
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, face
Ashmeadiella cactorum, female, side
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, side

Ashmeadiella cactorum, female, top
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, top
Ashmeadiella cactorum, female, wing
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, female, wing

Ashmeadiella cactorum, male, top
Smithsonian Institution, Entomology Department · 9
Ashmeadiella cactorum, male, top
Ashmeadiella cactorum FEM mm x f
© Copyright Laurence Packer 2014 · 7
Ashmeadiella cactorum FEM mm x f

Ashmeadiella cactorum MALE mm
© Copyright Laurence Packer 2014 · 7
Ashmeadiella cactorum MALE mm
Species account taken from: "A Revision of the Genus Ashmeadiella (Hymen., Megachilidae) Author(s): Charles D. Michener Source: American Midland Naturalist,Vol. 22, No. 1 (Jul., 1939), pp. 1-84"

Listed originally under a separate species. Ashmeadiella (Ashmeadiella) curriei curriei Titus Ashmeadiella curriei Titus, 1904, Proc. Ent. Soc. Wash., 6:100, 9 ; Michener, 1936, Am. Mus. Nov., 875:7, R. Heriades prosopidis Cockerell, 1897, Ann. Mag. Nat. Hist., (6)20:140, ,, nec 9. Ashmeadiella basalis nigra Michener, 1936, Am. Mus. Nov., 875:7, 9 8.

This is a small black species. It is easily recognized in the female by the finely punctate and entirely dull anterior margin of the clypeus. Al- though exhibited also by femorata, the distinctly convex antero-lateral mar- gins of the clypeus are quite distinctive. The tegulae are punctate in nearly all specimens of curriei, while in most of the other species the central and posterior parts of the tegulae are impunctate or nearly so.

Female: Inner margins of eyes converging toward clypeus, except for lower parts which diverge; facial line somewhat shorter than transfacial; flagellum brown beneath; truncation of clypeus slightly concave, shorter than distance from end of truncation to eye margin; ends of truncation not strongly marked; margin of clypeus between ends of truncation and lateral anigles of clypeus convex; basal two-thirds of clypeus rather coarsely punctate, but apical part finely and closely punctate, margin not smooth or impunctate; mandibles with dorsal carina of outer side ending slightly nearer anterior than posterior basal angle of mandible; distance from first to third mandibular tooth much less than width of eye, about equal to length of last two antennal segments; cheeks a little more than half as wide as eyes, seen from side; anterior ocellus nearly twice as far from antennal sockets as from posterior edge of vertex; distance between posterior ocelli equal to or only slightly greater than distance to eye, and distinctly greater than distance to posterior edge of vertex; vertex and frons rather coarsely punctate; supraclypeal area more finely so. Scutum more finely punctate than vertex, with narrow margin of whitish pubescence, no pair of pubescent spots anteriorly; tegulae black or nearly so, with punctures, especially near outer margin; mesepisterna as coarsely or nearly as coarsely punctate as vertex; wings faintly dusky; inner margin of inner hind tibial spurs finely serrate with about fifteen small teeth, outer margin with eleven larger teeth; inner margin of outer hind tibial spurs practically toothless, outer margin with six, moderate sized, oblique teeth. Abdominal tergites more finely punctate than scutum; tergites one to four with narrow, apical bands of white pubescence; fifth tergite with a less conspicuous apical pubescent band, or without such a band; scopa white. Length 5 to 6? mm.

MAle: Similar to female except as indicated below: upper two-thirds of inner margins of eyes slightly converging toward clypeus; flagellum dusky or brown beneath; anterior margin of clypeus with inconspicuous, shallow emar-gination about half as broad as basal width of clypeus; anterior part of clypeus with narrow, finely and closely punctate band just basad to the shiny margin; cheeks narrower than eyes seen from side; vertex coarsely and not closely punctate. Scutum more finely punctate than vertex; mesepisterna punctured like scutum; inner margin of inner hind tibial spurs with about thirteen small teeth, outer margin with about four rather large, oblique teeth; median teeth of sixth tergite variable, slightly longer than broad, subparallel sided, emar- gination between them variable in shape. Length 4 to 5 mm. This widely distributed but rather rare species is quite variable, and its relationship to the form known as echinocerei is not entirely evident. The latter is perhaps a desert subspecies of curriei, but the occurrence of curriei in the desert may indicate that it is a synonym instead of a subspecies. Just which specimens are to be placed in echinocerei and which in curriei cannot be decided until more specimens of true echinocerei come to hand. Typical curriei occurs from British Columbia to California and Colorado. California records are from the northern part of the state and from the eastern side of the Sierra Nevada. Several specimens from desert regions recorded below should possibly be discussed under echinocerei.

WASHINGTON: White Rock Springs, Stevens Pass, Cascade Mountains, July 13, 1930 (E. C. Van Dyke). OREGON: Mount Hood, 3000 to 6000 feet, August 6, 1925 (C. L. Fox). CALIFORNIA: Mount Lassen, 6700 feet, July 21 and 22, 1937 (F. X. Williams); Big Flat, Trinity County, June 20, 1934 (G. E. Bohart); Mammoth, Mono County, July 21, 1936 (G. E. & R. M. Bohart); Bishop Creek, Inyo County, 8000 feet, on Nama rothrockii, June 22, 1937 (C. D. Michener). UTAH: Zion Canyon, June 19, 1933 (O. H. Swezey). COLORADO: Florissant, June 19 (T. D. A. Cockerell); Boulder, May 26, 1908 (S. A. Rohwer). A specimen from Las Vegas, NEW MEXICO, and one from Mazourka Canyon, Inyo Mountains, Inyo County, California, May 25, 1937 (C. D. Michener) are rather dense- ly pubescent for typical curriei. A female specimen from Lone Pine Canyon, Inyo County, California, 8000 feet elevation, on Crpptantha (C. D. Michener) is hardly 5 mm. long. A male from the same locality is approximately the same size. A female from Dos Palmos, Riverside County, California, March 28, 1934, appears to have been wet, and may have been more densely pubescent than is now apparent. It exhibits an unusually strong contrast in punctation between the vertex and the scutum. A large female, 6 mm. long, from San Bernardo, SONORA, Mexico, July 10, 1935, is in poor condition, practically all the pubescence being worn off. It is rather coarsely punctate, and shows very little contrast in punctation between the vertex and the scutum. A male from the same locality, June 29, 1935, is not peculiarly punctured. Type: Female; from Kaslo, British Columbia, in United States National Museum.

Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apocynaceae  Asclepias tuberosa @ UCRC_ENT (1)
Asteraceae  Aster rubrotinctus @ BBSL (1)

Baileya multiradiata @ UCRC_ENT (1)

Cirsium californicum @ BBSL__KWC (1)

Encelia farinosa @ UCRC_ENT (3)

Erigeron divergens @ UCRC_ENT (8)

Erigeron f @ UCRC_ENT (1)

Gutierrezia californica @ UCRC_ENT (2)

Heterotheca villosa @ UCRC_ENT (2)

Taraxacum officinale @ BBSL (1)

Tetradymia canescens @ BBSL (1); UCRC_ENT (1)
Bignoniaceae  Chilopsis linearis @ BBSL (7); UCRC_ENT (1); UCREM (1)

Tecoma sp @ BBSL (1)
Boraginaceae  Cryptantha ambigua @ UCRC_ENT (2)

Cryptantha inaequata @ BBSL (1)

Cryptantha micrantha @ UCRC_ENT (1)

Cryptantha sp @ BBSL (1); BBSL__KWC (6)

Phacelia heterophylla @ UCRC_ENT (2)

Phacelia ramosissima @ UCRC_ENT (22)

Phacelia @ UCRC_ENT (1)
Brassicaceae  Stanleya pinnata @ BBSL (1)
Cactaceae  Coryphantha vivipara @ BBSL (1)

Echinocereus pectinatus @ UCRC_ENT (1)

Ferocactus cylindraceus @ UCRC_ENT (1)

Opuntia basilaris @ BBSL (3)

Opuntia erinacea @ BBSL (2)

Opuntia sp @ BBSL (1)

Opuntia @ UCRC_ENT (4)

Sclerocactus whipplei @ BBSL (1)
Fabaceae  Acmispon americanus @ UCRC_ENT (1)

Acmispon glaber @ UCRC_ENT (6)

Acmispon nevadensis @ UCRC_ENT (8)

Astragalus lentiginosus @ BBSL (2)

Dalea sp @ BBSL (2)

Hedysarum sp @ BBSL (1)

Lotus argophyllus @ UCRC_ENT (1)

Lotus heermannii @ BBSL__KWC (2)

Lotus nevadensis @ UCRC_ENT (2); BBSL__KWC (1)

Lotus sp @ BBSL__KWC (1)

Melilotus officinalis @ BBSL (1)

Melilotus sp @ BBSL (1)

Prosopis juliflora @ BBSL (1)
Hydrophyllaceae  Eriodictyon angustifolium @ BBSL (1)

Phacelia leptosepala @ BBSL (1)

Phacelia rafaelensis @ BBSL (9)

Phacelia sp @ BBSL (1)
Lamiaceae  Hedeoma apiculata @ BBSL (1)

Marrubium vulgare @ UCRC_ENT (1)

Monardella linoides @ UCRC_ENT (4)

Monardella sp @ BBSL__KWC (1)

Salvia dorrii @ UCRC_ENT (2)

Salvia pachyphylla @ UCRC_ENT (1)

Salvia sp @ BBSL (1)

Trichostema lanatum @ UCRC_ENT (1)
Malvaceae  Sphaeralcea ambigua @ UCRC_ENT (1)

Sphaeralcea sp @ BBSL (1)
Onagraceae  Camissonia multijuga @ BBSL (5)
Orobanchaceae  Castilleja @ UCRC_ENT (1)

Cordylanthus nevinii @ UCRC_ENT (24)
Phrymaceae  Mimulus @ UCRC_ENT (1)
Plantaginaceae  Keckiella ternata @ UCRC_ENT (3)

Penstemon grinnellii @ UCRC_ENT (2)

Penstemon rostriflorus @ UCRC_ENT (2)

Penstemon @ UCRC_ENT (2)
Polemoniaceae  Collomia rawsoniana @ BBSL (1)

Eriastrum virgatum @ UCRC_ENT (3)

Gilia sp @ BBSL__KWC (8)
Polygonaceae  Eriogonum fasciculatum @ UCRC_ENT (4)

Eriogonum sp @ BBSL__KWC (6)

Eriogonum wrightii @ UCRC_ENT (10)
Scrophulariaceae  Cordylanthus sp @ BBSL__KWC (4)

Penstemon goodrichii @ BBSL (1)

Penstemon idahoensis @ BBSL (1)

Penstemon pachyphyllus @ BBSL (1)

Penstemon sp @ BBSL__KWC (1)

Penstemon whippleanus @ BBSL (1)
Solanaceae  Solanum sp @ BBSL (1)
_  Withheld @ BBSL (1289); BBSL__ZION (29); BBSL__YOSE (60); BBSL__CAVE (579)

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Updated: 2019-11-13 20:08:00 gmt
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