Theodore B Mitchell. A Subgeneric
Revision of the Bees of the Genus Coelioxys of the Western Hemisphere. Department of Entomology, North Carolina State University. 1973 |
HEAD: 7. Antennal sockets usually equidis¬tant from eyes and clypeus (A-1); nearer eyes than to each other (B-2), and nearer eyes than to median ocellus (C-2); nearer clypeus than to each other (D-2) and to median ocellus (E-2); usually equidistant from median ocellus and each other (F-l).
9. Occipital margin of vertex strongly
incurved (B-2), usually not carinate (C-l).
10. Lateral ocelli usually nearer occipit¬al margin than to eyes (A-2), and usually nearer each other than to eyes (C-2).
11. Genae narrower than eyes in lateral view (A-2); narrowed (B-l) and usually con¬cave below (C-l).
14. Segment 1 of labial palpi much shorter than segment 2 (A-2).
15. Scutum evenly convex (A-1), usually densely or coarsely sculptured (B-l).
16. Carina of pronotal tubercle elevated and prominent (A-2).
17. Vertical carina of mesepistema dis¬tinct (A-2); sharply dividing the anterior and lateral surfaces.
18. Scutellum usually densely or coarsely sculptured (A-1); dorso-median ridge not evident (B-2); edge of hind margin usually rounded (D-l), the dorsal and posterior sur¬faces merging.
19. Upper surface of axillae densely or coarsely sculptured (A-1), the free apical processes variable.
22. Median length of propodeal triangle usually about twice the length of median groove below (A-2) ; lateral margins of pos¬terior surface of propodeum rounded and indefinite (B-l); dorsal striations indefin¬ite medially, becoming more distinct later-ally, tending to form quadrangular pits to¬ward each side (C-l); anterior margin of spiracle usually only slightly elevated be¬low, and not carinate (D-l).
33. Midline of dorsal surface of basal tergum convex (A-1); margin of concav¬ity neither carinate (B-2), nor fasciate (C-2), and ventro-lateral areas not carin¬ate laterally (D-2).
34 & 35. Gradular grooves of terga 2 & 3 complete (A-1); median length of postgradular area shorter than that of pregradular area (B-3), but much broadened laterally (C-l), the grooves not fasciate (D-l).
36 & 37. Graduli of terga 4 & 5 usually very faint or inevident, even laterally (A-1).
38. Basal and apical areas of tergum 6 not markedly contrasting in form and surface sculpture (A-2); apical area relatively bare (B-2); lateral margins not angulate (C-2), but are sulcate (D-l) and usually fasciate (E-l), with a pair of evident subapical de-pressions separated by a median ridge (G-l).
39. Basal sternum only slightly swollen medially and only slightly declivous to the narrow base (A-1); apical margin usually broadly but slightly depressed medially (B-l) .
44. Sternum 6 only slightly longer than broad toward base (A-2); apex constricted, forming a median apical lip (B-l); lateral margins usually slightly outcurved, but convergent apically (C-l), with a marginal fringe of short hairs partially developed toward base (D-2).
HEAD: 56. Subocellar area usually densely sculptured (B-l).
57. Antennal sockets nearer eyes than to clypeus (A-2), nearer eyes than to each other (B-2) and to median ocellus (C-2); equidistant from each other and median ocel¬lus (F-l).
59. Vertex usually broadly, transversely convex (A-1).
60. Lateral ocelli nearer each other than to eyes (C-2), otherwise variable.
61. Genae usually strongly constricted be¬low by a diagonal ridge delimiting the more ventral hypostomal area (B-l), the latter flattened or shallowly concave (C-l); occip¬ital carina not protuberant below (E-2).
64. Segment 1 of labial palpi much shorter than segment 2 (A-2).
MESOSOMA: 65. Scutum evenly convex (A-1).
66. Carina of pronotal tubercle usually elevated and conspicuous (A-2).
67. Vertical carina of mesepisterna usual¬ly distinct, sharply dividing the anterior and lateral surfaces (A-2).
68. Dorso-median ridge of scutellum lack¬ing (B-2); posterior margin usually broadly rounded in dorsal view (C-2); edge of margin rounded, the dorsal and posterior surfaces merging, thus lacking a definite line of division (D-l).
69. Axillae coarsely and closely sculp¬tured (A-1).
72. Median length of posterior propodeal triangle usually longer than median groove below (A-1); lateral margins of posterior surface rounded and indefinite (B-l); dorsal striations usually indistinct or lacking medially, becoming more definite laterally, forming quadrangular pits (C-l); anterior* margin of spiracle only slightly elevated, not carinate (D-l), the dorso-lateral tri¬angles weakly developed (E-1).
75. Anterior face of front coxae only slightly convex (A-2); spines robust and erect (B-l) .
METASOMA: 83. Midline of basal tergum con¬vex above (A-1); margin of concavity neither carinate (B-2) nor fasciate (C-2), and ventro-lateral areas not carinate laterally (D-2).
84. Gradular groove of tergum 2 complete (A-1), only vaguely fasciate, if at all (C-2); postgradular area not foveate (G-2); apical margin deeply depressed (H-l), rim with a distinct and entire pale fascia (J-l); postgradular area usually convex med¬ially (E-2), its surface usually well punc¬tured throughout (F-l).
85. Gradular groove of tergum 3 complete (A-1), its anterior margin distinct (B-l), but not fasciate (C-2); postgradular area usually convex medially (E-2) and usually well punctured throughout (F-l); not fove¬ate (G-2); apical margin deeply depressed (H-l), the rim broad and distinct (J-l), with a distinct and entire pale fascia (K-l)
86. Gradular groove of tergum 4 nearly or quite complete (A-1), its anterior margin usually carinate or distinct (B-l); apical margin deeply depressed laterally (E-1), its rim broad and distinct laterally (F-l);post-gradular area usually well punctured
87. Gradular line of tergum 5 complete (A-1), its anteripr margin distinct (B-l) and usually fasciate (C-l); apical margin deeply depressed (D-l), rim usually narrow (E-2); latero-apical angles usually protu¬berant (F-l).
88. Median length of postgradular area of tergum 6 usually about half the maximum width (A-1); dorsal excavation usually deep and apical, separating the dorsal processes (B-l), the latter usually short, divergent, flattened, apices rounded or truncate (C-2); ventral surface usually very limited, bases of the ventral processes being contiguous or nearly with apical margin of the tergum (D-l),the processes very short, either truncate, triangular or rounded (E-2); lat¬eral processes usually triangular, acute or narrowly rounded (F-3).
90. Basal sternum slightly swollen medial¬ly* gently declivous to the narrow base (A-1) .
93. Gradulus of sternum 4 distinct, pos¬sibly carinate (A-1); apical margin entire and simple (B-l), but rim usually strongly depressed,possibly emarginate medially(C-3).
94. Sternum 5 normally retracted, only lightly sclerotized (A-2); gradulus usually rather strongly incurved toward base (B-2); basal margin strongly incurved toward gradu¬lus, thus constricting the pregradular area medially (C-2).
95. Sternum 6 retracted and variable, but postgradular area broad medially and at base, completely and widely separating the lateral elements of the pregradular area (C-l).
97. Lateral margins of sternum 8 converg¬ent apically (A-1).
Figure 29. Dorsal surface of mesosoma of C.edita Cresson.
98. Gonocoxites of genitalia compressed, possibly slightly expanded apically (B-2).