Smithsonian Institution, Entomology Department · 9 Coelioxys banksi, female, face Click on map for details about points. IDnature guides Bee species Coelioxys female Coelioxys male Links Hosts 80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2 Set display option above. Click on images to enlarge. Smithsonian Institution, Entomology Department · 9 Coelioxys banksi, female, side Smithsonian Institution, Entomology Department · 9 Coelioxys banksi, female, top Smithsonian Institution, Entomology Department · 9 Coelioxys banksi, female, wing © Copyright source/photographer · 7 Coelioxys banksi, f, back, Mercer Co., NJ © Copyright source/photographer · 7 Coelioxys banksi, f, face, Mercer Co., NJ © Copyright source/photographer · 7 Coelioxys banksi, f, right, Mercer Co., NJ © Copyright Laurence Packer 2014 · 7 Coelioxys banksi fem lat comp ps © Copyright Laurence Packer 2014 · 7 Coelioxys banksi male lat comp ps © USDA Bee Biology and Systematics Laboratory, Logan Utah · 1 Coelioxys banksi, t6 acute with medial ridge © USDA Bee Biology and Systematics Laboratory, Logan Utah · 1 Coelioxys banksi, clypeal margin slightly protuberant © USDA Bee Biology and Systematics Laboratory, Logan Utah · 1 Coelioxys banksi, t6 acute with medial ridge 13 thumbnails  •  slide show Overview Reprinted with permission from: Baker J. R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50(12):649-730. FEMALE: Agrees with description and figures of Coelioxys rufitarsis except as follows: (1) Length 10-13 mm; (2) integument black, becoming brown to ferruginous on tegula, legs distal to base of femora, and metasomal venter; (4) ocular hairs short (about 0.05 mm); (5) clypeal margin outcurved and produced anteriorly, clypeal profile concave (Fig. 22C-D); (7) paraocular area almost hidden by appressed setae about 0.15 mm long; (10) ocellar area in some specimens with irregular, impunctate areas, usually narrower than puncture width anterior to median ocellus; (11) interocellar distance equal to ocelloccipital distance, less than ocellocular distance; (13) gena equal in width to light portion of eye; (14) hypostomal area of gena with setae as long as or slightly longer than setae on lower disc; (16) scutum with slender, erect setae and with anterolateral fascia sometimes less conspicuous than shown in Figure 21; (17) mesepisternum in some specimens with an occasional minute puncture among large punctures, usually closely punctured; (22) terga 2-5 slightly more closely punctured on postgradular area than shown in Fig. 21, gradular groove of tergum 3 less conspicuous than shown in Fig. 21, tergum 6 not angled laterally but produced posteriorly (Fig. 24B); (23) sternum 6 elongate, apex lanceolate (Fig. 24B). MALE: Agrees with figures and description of C. rufitarsis except as follows: (24) Length 9.5-11.5 mm; (25) integument faintly rugulose on metasoma between punctures; tegula black to brown; (26) pubescence as in female (3 above); (27) ocular hairs of medium length (about 0.09 mm); (31) rest of face coarsely, contiguously punctured, with long (03 mm), slender setae; (33) ocellar area contiguously punctured; (34) ocelloccipital distance greater than interocellar distance, less than ocellocular distance; (37) hypostomal area of gena with pubescence on anterior portion shorter than on gena; (39) scutum as in female (16 above); (43) metanotum with erect, slender setae; (45) fovea on tergum 2 about 0.06 mm long and 0.3 turn wide (Fig. 25D); tergum 6 with depression between dorsal spines slightly deeper and wider than shown in Figure 25C. HOST RECORDS. Medler and Koerber (1958) reported rearing Coelioxys ban ksi from nests of Megachile relativa. DISTRIBUTION AND SEASON OF FLIGHT. This species has been collected throughout the western half and northeastern quarter of the United States (Figure 29). It appears to be rare throughout its range. Coelioxys banksi is in flight from at least April 16 (central California) to September 20 (Toronto, Ontario). HABITAT. Coelioxys banksi has been taken mainly from areas classified as western coniferous and northern hardwood forests. The western forests are dominated by such trees as cedar (Thuja), hemlock (Tsuga), and Douglas fir (Pseudotsuga), grand fir (Abies), pine (Pinus), and spruce (Picea). Two areas, one in California, classified as coastal sagebrush (Salvia, Eriogonum) and the other in Utah classified as mountain mahogany- oak shrub (Cercocarpus, Quercus), were the only western areas not dominated by conifers. In the East this bee was taken from an area classified as mixed mesophytic forest (Acer, Aesculus, Fagus, Liriodendron, Quercus, Tilia) and an area classified as northern hardwoods forest (Acer, Betula, Fagus, Tsuga). Perhaps C. banksi is excluded from the western, central, and eastern grasslands by C. insita. GEOGRAPHIC VARIAI1ON. The variation described above does not seem to be related to geography. Coelioxys banksi shows a problem that is recurrent in New World Coelioxys; this species and C. insita (treated next) differ largely in the configuration of the anterior margin of the clypeus of the female (males are indistinguishable). In C. banksi the clypeal margin is produced medially (Fig. 22C-D) whereas the clypeal margin is almost straight to slightly outcurved in C. insita. There seem to be no intermediates (15 specimens of C. banksi and 20 specimens of C. insita). Whether these alternate conditions are the result of polymorphism within one species or indicate the presence of two species cannot he determined from dead specimens. Unless it is demonstrated that there is only one species, it seems best to recognize two. Similar pairs of species separated by the anterior margin of the clypeus of the female (males indistinguishable) are found again in this group (Coelioxys octodentata and C. novomexicana, further discussion below) and in a Neotropical group (C. zapoteca and C. clypeata). COMPARATIVE COMMENTS. Females of Coelioxys banksi differ from all other females in this group by the anterior margin of the clypeus which is produced and raised medially, making the profile distinctly concave (Fig. 22D—D). Males of C. banksi differ from other males in this group (except those of C. insita which are distinguishable by distribution only) by the almost linear shape of the fovea on the second metasomal tergum (Fig. 25D). The anterior margin of the fovea is usually very closely punctured. Names Scientific source: Discover Life bee species guide and world checklist, Ascher and Pickering. Integrated Taxonomic Information System Supported by National Biological Information Infrastructure National Science Foundation Hosts · map Family Scientific name @ source (records) Fabaceae   Medicago sativa @ BBSL (1) go to Discover Life's Facebook group Updated: 2024-04-24 04:51:26 gmt Discover Life | Top © Designed by The Polistes Corporation