Oligochlora (Soliapis), ENGEL, 2000, ENGEL, 2000

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 : 55-58

KEY TO GENERA AND SUBGENERA OF AUGOCHLORINI

The groups Electraugochlora , Glyptochlora , Oligochlora , Soliapis , and Xenochlora are excluded from the male portion of this identification key as males are unknown for these taxa. The key presented in Engel (1998) mistakenly treated the marginal cell apex of Oligochlora as acute while in all species the apex is, in truth, feebly truncate.

FEMALES

1. Prementum greatly narrowed and elongate, length seven or more times greater than width (fig. 13).................... 2

— Prementum not greatly narrowed or elongate, length less than seven times width (fig. 14) ................................ 9

2. Maxillary palpus not elongate, extending posteriorly to base of prementum at most.. 3

— Maxillary palpi greatly elongate, extending posteriorly to posterior border of mesosoma or beyond.......... Ariphanarthra

3. Pronotal dorsal surface not inflated; epistomal sulcus variable, but never forming a deep projection extending into clypeus; basal area of propodeum variable.......... 4

— Pronotal dorsal surface inflated; epistomal sulcus forming a narrow, deep projection extending into clypeus, nearly reaching clypeal apex; basal area of propodeum elongate, as long as scutellum and metanotum combined (fig. 39)................................. Chlerogelloides

4. Ocelli greatly enlarged (fig. 6); inner hind tibial spur serrate (fig. 48)............. 5

— Ocelli not enlarged (figs. 1–5); inner hind tibial spur variable................... 6

5. Compound eyes greatly enlarged, projecting above vertex in frontal aspect; clypeal apex relatively straight; marginal cell apex feebly truncate and appendiculate.............................. Megaloptidia

— Compound eyes not greatly enlarged, vertex projecting above upper tangent of compound eyes; clypeal apex concave (figs. 5 12); marginal cell apex acute................. Megommation ( Megommation

6. Basitibial plate with anterior border obsolete or all borders faint; inner hind tibial spur variable ( Megommation s.l. in part)... 7

— Basitibial plate with all borders well developed; inner hind tibial spur serrate (fig. 48..................... Micrommation

7. Scopa present (fig. 41); mandible normal short with weak subapical tooth; inner hind tibial spur pectinate (figs. 46, 47)..... 8

— Scopa absent (fig. 40); mandible long and slender; inner hind tibial spur serrate (fig 48).... Megommation ( Cleptommation

8. Basitibial plate short and rounded, borders not defined................................... Megommation ( Megaloptina

— Basitibial plate of normal length, narrowly rounded, posterior border well developed.......... Megommation ( Stilbochlora

9. T5 with medioapical cleft (fig. 59); body sculpturing variable; mandible variably constructed; scopa frequently present; apical margins of T1 and T2 not strongly depressed or rimmed................ 10

— T5 lacking medioapical cleft; body coarsely punctured (figs. 7–9, 30, 56); mandible short, pointed, without subapical tooth scopa absent (fig. 40); apical margins of T and T2 strongly depressed and rimmed (figs. 56–57)............. Temnosoma

10. Malar space elongate, as long as or longer than basal mandibular width (fig. 4).. 11

— Malar space not elongate, length less than basal mandibular width (figs. 1–3, 5, 8).. ................................ 13

11. Flagellum with the normal complement of 10 flagellomeres; pronotal dorsal surface frequently inflated; basal area of propodeum as long as or longer than scutellum and metanotum combined (fig. 39), nonstriate... ................................ 12

— Flagellum with only nine flagellomeres; pronotal dorsal surface not inflated; basal area of propodeum subequal to scutellum, short- er than scutellum and metanotum combined (fig. 38), frequently striate.... Chlerogas

12. Inner hind tibial spur densely pectinate, with more than 10 long teeth; epistomal sulcus forming orthogonal angle; pronotal dorsal surface not inflated ( Ischnomelissa in part)...................... Ischnomelissa

— Inner hind tibial spur pectinate, fewer than 10 long teeth; epistomal sulcus forming acute angle; pronotal dorsal surface frequently inflated................. Chlerogella

13. Inner hind tibial spur pectinate (figs. 46, 47) ............................... 14

— Inner hind tibial spur serrate (fig. 48).. 36

14. Inner posterior angle of tegula notched (fig. 34); pronotal dorsal ridge lamellate (fig. 33); labral distal process quadrate, expand- ed at apex and base (fig. 20) ( Augochloropsis s. l.)...................... 15

— Inner posterior angle of tegula rounded, not notched (fig. 35); pronotal dorsal ridge variable; labral distal process variable, but nev- er expanded at apex (figs. 17–19).... 17

15. Mesoscutal anterior border rounded (fig. 32); mesoscutal lip rounded; vertex normal, longer than a single ocellar diameter; body variously sculptured............... 16

— Mesoscutal anterior border narrow (fig. 33); mesoscutal lip lamellate; vertex short, barely a single ocellar diameter in length; body coarsely punctured........................... Augochloropsis (Glyptochlora)

16. Basal area of propodeum striate or pitted......... Augochloropsis (Augochloropsis)

— Basal area of propodeum smooth, granular, or rugulose............................... Augochloropsis (Paraugochloropsis)

17. Labral keel of distal process with basal expansion (fig. 19); if scopa present, then mandible with supplementary teeth on inner margin (fig. 16); vertex with interocellar furrow (deep furrow between lateral ocelli, fig. 11)................... 18

— Labral keel of distal process without basal expansion (figs. 17, 18); mandible without supplementary teeth; vertex without interocellar furrow................... 20

18. Ocelli enlarged, nearly touching compound eye (fig. 6); distal hamuli of hind wing closely packed and numerous (fig. 36); hairs of mesotibia, metatibia, and metabasitarsus variably colored, frequently amber, never stiff and black ( Megalopta s.l.)...... 19

— Ocelli normal, not enlarged, more than one ocellar diameter from compound eye (figs. 1–5); distal hamuli of hind wing normal, with distinct spacing pattern (fig. 37); hairs of mesotibia, metatibia, and metabasitarsus stiff and black............ Xenochlora

19. Scopa absent (fig. 40); mandible long and slender, without supplementary teeth; basitibial plate absent (fig. 45)........................ Megalopta (Noctoraptor)

— Scopa present (fig. 41); mandible normal, short with supplementary teeth on inner margin (fig. 16); basitibial plate present, anterior border obsolescent (fig. 44).................... Megalopta (Megalopta)

20. Pronotal dorsal ridge lamellate (fig. 33).... ................................ 21

— Pronotal dorsal ridge variable, but never lamellate......................... 22

21. Anterior surface of T1 modified into an acarinarium (basal glabrous area surrounded by dense hairs) (figs. 53–55); mesotrochanter with dorsal hook (fig. 42); vertex short; marginal cell apex truncate; basitibial plate obsolescent on anterior border (fig. 44); basal area of propodeum covered with tomentum............... Thectochlora

— Anterior surface of T1 unmodified (fig. 52); mesotrochanter lacking a dorsal hook; vertex lengthened posteriorly; marginal cell apex acute; basitibial plate with strong borders (fig. 43); basal area of propodeum variable, but never covered with tomentum........................ Rhinocorynura

22. Preoccipital ridge carinate (fig. 27); pronotal dorsal ridge carinate.............. 23

— Preoccipital ridge rounded or angled, but distinctly not carinate (fig. 26); pronotal dorsal ridge variable.................... 27

23. Basitibial plate with obsolete anterior border (fig. 44); epistomal sulcus forming orthogonal angle; mesoscutal anterior border broadly rounded (fig. 32).......... 24

— Basitibial plate with well-developed borders (fig. 43); epistomal sulcus forming orthogonal or obtuse angle; mesoscutal anterior border frequently narrowed (fig. 33).. 25

24. Inner hind tibial spur pectinate, teeth well spaced, with fewer than 10 long teeth (figs. 46, 47); pronotal dorsal ridge not produced anteriorly; basal area of propodeum granular with fine basal striations............................ Andinaugochlora

— Inner hind tibial spur densely pectinate, with more than 10 long teeth; pronotal dorsal ridge produced anteriorly; basal area of propodeum with strong striae reaching to apex..... Caenaugochlora (Ctenaugochlora)

25. Angle of epistomal sulcus forming obtuse angle; mesoscutal anterior border sometimes narrowed (fig. 33); hairs of compound eyes minute, shorter than, or scarcely longer than diameter of a single ommatidium (fig. 29)................... Neocorynura

— Angle of epistomal sulcus forming orthogonal angle; mesoscutal anterior border broadly rounded (fig. 32); hairs of compound eyes frequently longer than three or more ommaditial diameters (fig. 28)................ Caenaugochlora (Caenaugochlora)

26. Preoccipital ridge strongly carinate; mesoscutul anterior border frequently narrowed (fig. 33); basal labral elevation transverse...................... Neocorynura

— Preoccipital ridge weakly carinate; mesoscutal anterior border broadly rounded; basal labral elevation orbicular.............................. Neocorynurella part

27. Inner hind tibial spur pectinate, teeth spaced apart, with fewer than 10 long teeth (figs. 46, 47); basal area of propodeum variable, but shorter than scutellum and metanotum combined (fig. 38)................ 28

— Inner hind tibial spur densely pectinate, with more than 10 long teeth, closely packed; basal area of propodeum as long as or frequently longer than scutellum and metanotum combined (fig. 39)................................ Ischnomelissa part

28. Marginal cell apex feebly truncate and appendiculate......................... 29

— Marginal cell apex acute............. 32

29. Vertex without ridge posterior to ocelli; epistomal sulcus obtuse; galeal apex rounded (fig. 24)........................ 30

— Vertex with transverse ridge posterior to ocelli (fig. 10); epistomal sulcus orthogonal; galeal apex pointed (fig. 23)............................. Pseudaugochlora

30. Pronotal dorsal ridge carinate; labral teeth strong; basitibial plate variable; basal area of propodeum granular or smooth, frequently without striae or with weak basal striae (fossil genus from Dominican amber: Oligochlora s.l.).................. 31

— Pronotal dorsal ridge rounded; labral teeth absent; basitibial plate with well-defined bor- ders; basal area of propodeum striate......................... Neocorynurella

31. Basitibial plate with all borders strongly defined (fig. 43); anterior surface of T1 unmodified (fig. 52)................................... Oligochlora ( Soliapis

— Basitibial plate with anterior border obsolete (fig. 44); anterior surface of T1 with weakly developed acarinarium (cf. fig. 53)................ Oligochlora ( Oligochlora

32. Basitibial plate with well-developed borders (fig. 43)........................ 33

— Basitibial plate with obsolete anterior border (fig. 44)........................ 35

33. Pronotal dorsal ridge not produced; anterior basitarsal brush present............ 34

— Pronotal dorsal ridge produced, frequently with median interruption setting anterior and posterior halves on separate planes frequently with a small flange; anterior basitarsal brush absent........ Rhectomia

34. Basal area of propodeum with striae along basal margin; labral distal process narrowly triangular (fig. 17); galeal comb absent (figs 22, 23); propodeal pit not enclosed within V- shaped notch......... Augochlorodes

— Basal area of propodeum lacking any striae entirely granular or smooth; labral distal process broadly triangular (fig. 18); galeal comb present (figs. 24, 25); propodeal pit enclosed within a V- shaped notch.................. Corynura (Corynura) part

35. Basal area of propodeum granular; hairs of compound eye short (fig. 29); labral distal process narrowly triangular (fig. 17); dull and dark metallic blue-green or black............................ Halictillus

— Basal area of propodeum striate; hairs of compound eye long (fig. 28); labral distal process broadly triangular (fig. 18); brilliant metallic green............................. Corynura ( Callistochlora

36. Epistomal sulcus forming obtuse angle... 37

— Epistomal sulcus forming orthogonal to acute angle.......................... 39

37. Marginal cell apex acute; mesoscutal anterior border broadly rounded (fig. 32); preoccipital ridge variable................. 38

— Marginal cell apex truncate; mesoscutal anterior border narrowed (fig. 33); preoccipital ridge carinate (fig. 27)............................... Paroxystoglossa

38. Preoccipital ridge rounded (fig. 26); basitibial plate with well-developed borders (fig. 43) basal area of propodeum granular or smooth, but never striate; galeal comb present (figs. 24, 25)............................... Corynura (Corynura) part

— Preoccipital ridge carinate (fig. 27); basitibial plate with obsolete anterior border (fig. 44); basal area of propodeum striate; galeal comb absent (figs. 22, 23).. Ceratalictus

39. Preocciptial ridge rounded (fig. 26).... 40

— Preoccipital ridge carinate (fig. 27).... 41

40. Epistomal sulcus forming acute angle, very slightly protruding into clypeus (figs. 80, 81); mesoscutal anterior border rounded; apex of marginal cell feebly truncate and appendiculate (Dominican amber fossil: Augochlora s.l. in part, figs. 79–81).............. Augochlora (Electraugochlora)

— Epistomal suclus forming orthogonal angle; mesoscutal anterior border slightly narrowed; marginal cell apex acute.............................. Megaloptilla

41. Epistomal sulcus forming acute angle, forming lobe which protrudes into basal margin of clypeus; marginal cell apex truncate and appendiculate ( Augochlora s.l. in part).. 42

— Epistomal sulcus forming orthogonal angle; marginal cell apex acute............ 43

42. Mandible with large, strongly developed subapical tooth; basal labral elevation orbicular; S1 frequently with a median ridge or tubercle (fig. 58)..................................... Augochlora (Augochlora)

— Mandible normal, subapical tooth weak; basal labral elevation transverse; S1 rarely with median ridge or tubercle....................... Augochlora (Oxystoglossella)

43. Inner hind tibial spur with an enlarged, broad, basal tooth (fig. 49)......... Pereirapis

— Inner hind tibial spur normally serrated, without expanded basal tooth (fig. 48)............................ Augochlorella