Extracted from: Robertson, C. (1897). North American Bees - Description and Synonyms. Transactions of the Academy of Science od St. Louis. Vol. 7. No. 14.
Black, opaque, the base of abdomen shining; head, thorax
and legs with rather long, whitish pubescence, more close on
clypens, cheeks and thorax beneath; mandibles, except base,
rufous; antennae dull ferruginous beneath, short, joints increasing
in length from second to fourth; fourth and following
joints subequal; lllesonotllm rather closely and strongly
punctured, with median and lateral raised lines; metathorax
strongly reticulated, with a semicircular inclosllre ; teglllae
testaceous exteriorly; wings hyaline, nervurcs testaceous,
stigma black; legs black, apical joints of tarsi ferruginous;
abdomen almost impullctate at base, towards apex closely and
.finely punctu red, fiL'st and fourth segments at apex and the
second and third entirely ferruginous. Length 10 mm.
~lichigan; one d specimen.
Dedicated to :Mr. G. C. Davis, of l\lichigan Agricultural
College, from whom the specimen was received. No reliance
need be placed on the definite limitation of the red color of
abdomen in the description of a single specimen. This is
the largest male 8pltecodes I have seen.