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Psyche 12:85-90, 1905.

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PSYCHE
TABLES FOR THE SEPARATION OF SOME BEES OF THE GENERA COELIOXYS AND COLLETES.
BY T. D. A. COCKERELL, BOULDER, COLORADO. American Apidology is greatly indebted to Mr. E. T. Cresson for the care- ful description of some 540 new species of bees, this count excluding a few which are now known not to be valid, but including the species of Central America and the West Indies. There is, however, one difficulty in using Mr. Cresson's work, and that arises from the absence of tables; in some of the more difficult genera this becomes so serious that the worker is at times discouraged. Two or three weeks work would provide us with tables for the separation of all the Cressonian bees; in fact, I presume that they could be made in less time than that, but nobody has seemed willing to undertake the task. When recently spending a
few days in Philadelphia I took occasion to make tables of Anthophora, Colletes, (males) and Coelioxys (females), and the two latter are herewith presented. Some non-Cressonian species which I found in the collection at the Philadelphia Academy are included; particularly Mr. Viereck's CoZZetes from Beulah, N. M., which have never been tabulated.
Colletes Latreille
Pubescence of thorax above deep orange ferruginous . . . . . . I Pubescence of thorax not brightly colored; males only tabulated . 2
I. Large; abdomen shining, without definite bands . . tho~vcicu Smith. Small; length about romm.; abdomen well banded . azteca Cr. 2.
Malar space exceedingly long, at least twice as long as broad; pubes- cence above strongly ochraceous; legs dark red (Mass.) valida Cr. Malar space not exceedingly long, but as long as broad, at least, or almost so (hardly so in the M. N. %wzsors") . . . . . . . . 3 Malar space short, obviously broader than long . , . . . . 7 3. The abundant hair of face clear white . . , - . . . . . . 4 Hair of face ochery or greyish-white; thorax above with some or many long plumose fuscous hairs; size larger than in the group following: flagellum all dark , . . . . . . . , . . . . . . . . 5 Hair of face and thorax above strongly yellowish or fulvous . . . 6 Psn-Ae 12:!3540 (1905). http //psyche cntclub nrg/12/12-085 html



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86 PSYCHE [October
4.
Larger: flagellum not
red beneath; hair of thorax above ochraceous; stigma dark brown; second submarginal cell broader (La Jolla, Calif.) yaudialis Ckll
Smaller: flagellum red beneath; hair of thorax above white; stigma ferruginous; second submarginal cell narrower. (Las Cruces, N. M. ) ptvsopidis Ckll.
5. Malar space a little longer than broad; mesothorax with much dark hair; abdomen comparatively narrow and parallel-sided compacts Cr
Malar space a little broader than long; mesothorax with little dark hair; abdomen broader; otherwise much like the last (Hanover, N. H.) inaqualis Say.
Like compacts, with the same transverse ridges on lower part of area of metathorax; but differing from compacta by its shorter malar space and shorter fourth antannal joint; differing from incequalis by its narrower abdomen, smaller size, and much less yellow pubescence of thorax skimeti Viereck.
6. Basal (lower) margin of second submarginal cell about as long as basal margin of third: tegulae black. (Washington State) kincaidii Ckll Basal (lower) margin of second submarginal cell much longer than that of third; tegulae light rufous. (New Mexico) . sp. incert. (placed in series of conson, but distinct from the type of that species). 7.
Hair of face and thorax above all pure white, with no dark intermixed: malar space about twice as broad as long: flagellum all dark. gypszcolem Ckll.
. . . Hair of face not white; or if so, that of thorax partly dark. 8
8.
Hair of thorax above decidedly yellow or fulvous (very pale ochraceous . . . . . . . . . . . . . . . . . . . .
inzonatus) 9
. . . Hair of thorax above greyish or whitish, or partly black I5
9.
Hair of thorax with long fuscous hairs intermixed; abdomen strongly punctured; second submarginal cell very broad (Colorado) sirnulans Cr.
Hair of thorax without fuscous hairs intermixed; flagellum at most very . . . . . . . . . . . . . . . faintly reddish beneath 10 . . . . . . . . . . . . .
I o. Tegulae light reddish, size small I I . . . . . . . . . . . . . . . . . . .
Tegulae dark I 2
I I. Hind tarsi dark like their tibiae; abdomen less hairy (Illinois) am erica ?z a C r.




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Hind tarsi red, their tibiae red at base and apex; abdomen more hairy . . . . . . . . . . . . . . . . . . annx Ckll. Smaller; first abdominal segment with strong punctures; hair of face strongly yellowish; malar space extremely short (Georgia) mandibulatis Smith.
Larger; first abdominal segment much more feebly punctured . . 13
First two abdominal segments extremely shiny, and not very hairy; punctures of scutellum extremely large (Georgia). . . distincta Cr. First two abdominal segments not so shiny, and quite hairy . . . 14
Hair of thorax above fulvous; bands of abdomen ochraceous; second submarginal cell narrower, the recurrent nervure entering near end of first third. ( Colorado.) . . . . . . . . . . . consom Cr. Hair of thorax above very pale; bands of abdomen white; second sub- marginal cell broader, the recurrent nervure entering a little basad of its middle . . . . . . . . . . . . . . . zona/us Viereck. Hair of thorax above without any, or any conspicuous admixture of dark hair; small species; stigma and nervuresdark . . . . . . 16
Hair of thorax above with very conspicuous black hairs, that on the scutellum mainly or all dark . . . . . . . . . . . . . . 17
Base of metathorax more strongly sculptured, and with a transverse ridge; abdomen narrower; hind spurs light reddish . sp/tx/ts Viereck. Base of metathorax less strongly sculptured, and without a transverse ridge; hind spurs dark . . . . . . . . . . paniscus Viereck. Much larger; abdomen with extremely large and strong punctures giZeå´t~si Ckll.
Much smaller; abdomen with fine delicate punctures (Cuba) subma/~imrta Cr.
Coelioxys Latreille. (females).
. . . . . . . . . .
Abdomen entirely red abdominalis Gukr.
Abdomen with the first three segments red, the last three black slossofti Viereck.
. . . . .
Abdomen black, the first segment sometimes dark red I
Middle of scutellum smooth, shining and impunctate (only partially so . . . . . . . . . . . .
in fotonaca, uhleriandgermana) 2
Middle of scutellum densely punctured like the rest (with sparse punctures, or a small shiny space, in to/o/zaca, uhleri, and germana) T I Tegulae dark . . . . . . . . . . . . . . . . . . . 3 Tegulas red . . . . . . . . . . . . . . . . . . . 5



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PSYCHE [October
Abdomen not obviously banded; wings very dark fuliginous; apical dorsal segment subtruncate and strongly keeled. . . . dolichos Fox. Abdomen obviously banded; wings not so dark, though apical half of anterior wings is fuliginous . . . . . . . . . . . . . . 4 Last ventral segment extending far beyond last dorsal; face with much white hair (Cuba) . . . . . . . . . . . . . . uhleri Cr. Last ventral extending only a little beyond last dorsal; face without white hair (Cuba) . . . . . . . . . . . . . prodttc!a Cr. Thorax mainly red; last ventral segment extending far beyond the last dorsal; legs red; sides of abdomen largely red; clypeus deeply emargi- nate, its anterior margin like a broad W (Mexico) . . . azteca Cr. Thorax not red . . . . . . . . . . . . . . . . . . 6 Last
ventral segment extending very far beyond last dorsal; sides of . . . . . . . . . .
first abdominal segment red; legs red
7
Last ventral segment extending only a moderate or short distance beyond last dorsal; or if rather far (gemma), sides of first abdominal segment not red . . . . . . . . . . . . . . . . . 8 Scutellar teeth short; median process of scutellum very broad and short (Mexico) . . . . . . . . . . . . . . . . otomita Cr. Scutellar teeth very long; median process of scutellum long (Mexico) teykmeca Cr.
Scutellar teeth extremely short; pubescent markings of thorax above orange-fulvous (Jamaica) . . . . . . . . . . foxii Viereck . . . . . . . . .
Scutellar teeth fairly or very long; legs red 9
Hair of sides of face yellowish; last ventral segment only slightly sur- passing last dorsal; face between antennae with a large elevated ridge ( Mexico) . . . . . . . . . . . . . . . . tolteca Cr. Hair of sides of face white; last ventral segment surpassing last dorsal . . . . . . . . . . by some distance; scutellar teeth long 10 Sides of first abdominal segment, and venter, red (Mexico) totonaca Cr. Sides of first abdominal segment, and venter, only faintly stained with red (Illinois) . . . . . . . . . . . . . . . germana Cr. . . . . . . . . . . . . . . . . . Tegulas bright red I 2 . . . . . . . . . . . Tegulse dark, black to dark reddish 2 1
. . . . . . . . . . . . Last ventral segment very broad I 3
. . . . . . .
Last ventral segment rather or quite narrow 14
Last ventral segment fringed with short black hair, and without an . . . . . . . . .
apical projection (Dallas, Texas)
kana Cr.




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COCKERELL-SEPARATION OF BEES 89
Last ventral segment not so fringed, and with a large apical projection (Kansas) . . . . . . . . . . . . . . . . de/Zanata Cr. Last ventral segment with a strong fringe of black hair; first abdominal segment red; middle of scutellum with an impunctate line ( Mexico) chichimeca Cr.
Last ventral segment not so fringed
. . . . . . . . . .
IS
Last ventral segment very narrow, not notched at sides (Mexico) zapoteca Cr.
Last ventral segment notched at sides, legs red (dark in octodentata) I 6
Scutellum with a rather large median projection . . . . . I7 Scutellum without any projection . . . . . . . . . . . 18 Lateral teeth of scutellum slender (Illinois) . . . . germana Cr. Lateral teeth of scutellum broad (Mexico) . . . . . /o/onaca Cr. Last dorsal segment narrowed and strongly keeled apically, looking like a chicken's beak; size larger than octodentata or aZtilis{Texas) insita Cr. Last dorsal not so . . . . . . . . . . . . . . . . I9 Larger; last dorsal long (Mexico) . . . . . . . mexicam Cr. Smaller; last dorsal shorter . . . . . . . . . . . . . 20 Abdominal hair-bands white . . . . . octodentata Say, Cresson Abdominal hair-bands stained with yellowish . . . . . altilis Cr. (Robertson calls octodentata %Say" of Cresson, C. sayi rob., and regards aliilis as the real ocfodentata. However, he admits that sayiwas included in octodentata by Say.)
Last ventral ending in a very long spine, and with a very long fringe of . . . . . . . . . . . . . black hair (Cuba) uhlerii Cr. Last ventral not so ending . . . . . . . . . . . . . 22 Last ventral broad, fringed with hair, and not notched at the sides 23 Last ventral notched at sides . . . . . . . - . . . . 24 Smaller; last ventral with a very small apical point or spine (Pa.) modesta Smith.
Larger; last ventral without such a point (Colorado) . altemata Say.
Last ventral very broad, abruptly narrowed, the apical process forming about an equilateral triangle; scutellum with a median tubercle (Colorado) . . . . . . . . . . . . . . . wta Cr. Last ventral not so; sculellum without a median tubercle, last dorsal . . . . . . . . . . . . . not curved upwards at end 2S
. . . . . .
Last dorsal, seen from above, abruptly narrowed 26
Last dorsal, seen from above, not abruptly narrowed . . , . , 7



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9O PSYCHE [Octobel
26. Part of last dorsal beyond the constriction much larger than wide (N. Y. ) . . . . . . . . . . . . . . . dubitata Smith. Part of last dorsal beyond the constriction almost as wide as long (N.Y.) cornstockii Cr.
27. Legs red (Cuba) . . . . . . . . . . . . . . ruftpes Gukr. Legs black . . . . . . . . . . . . . . . . . . 28 28. Pubescence strongly tinged with yellow (Colchester, England) acuminata Nylander.
. . . . . .
Pubescence white or faintly tinged with yellow. 29
29. Scutellar teeth moderately long; last dorsal rather short, but pointed (N. Y. ) . . . . . . . . . . quadridentata, Linn. Cresson. . . . . . . . . .
Scutellar teeth short; last dorsal longer 30
30. Larger; 13mm. long (N. Y.) . . . . . . . . . lucrosa Cr Smaller; hardly izmrn. long; abdomen more slender and more closely punctured (Connecticut) . . . . . . . . . . . moesta Cr. I take this opportunity to state that Bombus medius Cresson, supposed to have been collected by Suckley in Utah, is really Mexican. Prof. C. H. T. Townsend took it abundantly near San Rafael, on the Rio Nautla, State of Vera Cruz, March 8 to April 8, on six different species of flowers (his numbers 4, 15, 19, 23, 25 and 28), and I find specimens labelled "Mexico" both in the collection at Philadelphia and that at Washington.




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