Corynura Spinola, 1851

ENGEL, MICHAEL S., 2000, Classification Of The Bee Tribe Augochlorini (Hymenoptera: Halictidae), Bulletin of the American Museum of Natural History 2000 (250), pp. 1-89 : 52

Genus Corynura Spinola

DIAGNOSIS: Species of Corynura s.l. can be distinguished from other Corynurina by the combination of a broad hypostomal fossa, a nonproduced pronotal lateral angle, and a triangular recess surrouding the propodeal pit.

DESCRIPTION: Female. Mandible with moderate to strong subapical tooth. Labral distal process broadly triangular; basal elevation transverse; teeth absent. Prementum not greatly elongate. Galeal apex rounded; galeal comb present; galeal base extending about half of distance to stipital base. Hypostomal fossa as long as wide or wider; hypostomal ridge carinate; anterior angle rounded. Malar space length less than mandibular width. Epistomal sulcus obtuse. Ocelli not greatly enlarged; ocellar furrow absent. Vertex not expanded or ridged behind ocelli. Preoccipital ridge rounded. Pronotal lateral angle not produced, obtuse; dorsal ridge carinate; lateral ridge rounded. Mesoscutal anterior border rounded; mesoscutal lip round- ed. Tegula oval. Anterior basitarsal brush present. Apex of marginal cell acute. Distal hamuli with irregular spacing pattern. Propodeal pit set into notch. Male. Mandible simple. Labrum without distal process; basal are not notched. Antennae long, extending back to propodeal triangle; F2 much longer than F1, usually longer than or as long as scape. Inner hind tibial spur serrate. Meta- soma petiolate. Apical margins of S4 and S5 unmodified. Apical margin of S6 emarginate. Apical margin of S7 unmodified. Apical margin of S8 with median projection; spiculum broad. Proctiger unmodified. Gonobasal bridge broad; dorsal lobes weak. Basal process of gonostylus present; parapenial lobe absent; dorsal gonostylus reduced, present as a ridge bearing setae. Ventral surface of penis valve with keel.

Subgenus Callistochlora Michener Figures 28 , 61 , 77

Callochlora Moure, 1964: 269 . Type species: Halictus chloris Spinola, 1851 , original designation. Nomen praeoccupatum (nec Callochlora Packard, 1864 [ Lepidoptera : Bombycidae ]).

Callistochlora Michener, 1997: 12 . Nomen novum pro Callochlora Moure, 1964 . Type species: autobasic with Callochlora Moure, 1964 .

DIAGNOSIS: Refer to Diagnosis for Corynura s.s. (below).

DESCRIPTION: As for the genus with the following additions: Female. Compound eyes with long eye hairs. Basitibial plate rimmed posteriorly, anterior border obsolete. Inner hind tibial spur pectinate. Basal area of propodeum striate. Male. Basal process of gonostylus without setae.

REVISIONS: Moure and Hurd (1987) list four species included in Callistochlora (as Callochlora ); however, two of these have since been moved to other genera (Engel, 1996c). These taxonomic changes have left the subgenus with only the two originally included species, C. chloris (Spinola) and C. prothysteres (Vachal) , both of which can be identified by Moure’s key (1964).

BIOLOGY: The nesting biology and mature larva of C. chloris were studied by Claude- Joseph (1926, as a species of Halictus ).

DISTRIBUTION: Callistochlora occurs in Chile and Argentina, with one record of C. prothysteres from Peru.

Subgenus Corynura Spinola s.s. Figures 14 , 21, 24–26

Corynura Spinola, 1851: 296 . Type species: Corynura gayi Spinola, 1851 [= Halictus rubellus

Figures

Figs. 26–29. Head modifications. 26. Preoccipital area of Corynura (Corynura) chilensis (Spinola). 27. Preoccipital area of Pereirapis semiaurata (Spinola), carina present. 28. Compound eye of C. (Callistochlora) chloris (Spinola), elongate setae. 29. Compound eye of Augochlora (Augochlora) pura (Say), minute setae.

Figs. 60–63. Features of male Augochlorini. 60. Labrum of Caenaugochlora (Caenaugochlora) costaricensis (Friese). 61. From left to right: apex of scape, pedicel, F1, F2, and basal margin of F3 for Corynura (Callistochlora) prothysteres (Vachal). 62. From bottom to top: scape, pedicel, F1, F2, F3, and basal margin of F4 for Pereirapis semiaurata (Spinola). 63. Distal flagellomeres of Pseudaugochlora graminea (Fabricius), F11 hooked at apex.

Figs. 72–77. Male genitalic structures. 72. Genital capsule of Thectochlora alaris (Vachal), ventral aspect. 73. Genital capsule of Megalopta (Megalopta) genalis Meade-Waldo, ventral aspect. 74. Genital capsule of Rhinocorynura briseis (Smith), ventral aspect. 75. Gonocoxite-gonostylus junction in R. briseis depicting basal gonostylar process on ventral surface, process with strong setae at apex. 76. Penis valve of Temnosoma metallicum Smith, profile, with large dorsal processes. 77. Basal gonostylar process of Corynura (Callistochlora) prothysteres (Vachal) lacking setae, partially hidden by setose ventral

Figs. 13–16. Female mouthparts. 13. Labiomaxillary complex and hypostomal fossa of Megommation (Megaloptina) ogilviei (Cockerell), ventral aspect. 14. Labiomaxillary complex and hypostomal fossa of Corynura (Corynura) chilensis (Spinola), ventral aspect. 15. Clypeus and mandibles of M (Cleptommation) minutum (Friese). 16. Mandible of Megalopta (Megalopta) genalis Meade-Waldo.

Figs. 21–25. Labiomaxillary complex structures of Augochlorini. 21. Maxilla in profile Corynura (Corynura) chilensis (Spinola). 22. Maxilla of Pseudaugochlora graminea (Fabricius). 23. Galeal apex of P. graminea. 24. Galeal apex of C. chilensis. 25. Galeal comb of C. chilensis.