Prototyrtaeus, Spiessberger and Ivie

KEY TO THE SPECIES OF PROTOTYRTAEUS

1. Antenna with 7 antennomeres ( Figs. 15g –i View Fig ), club composed of 3 fused antennomeres; Jamaica............................................ 2

1ʹ. Antenna with 9 antennomeres ( Figs. 15a–f, j–n View Fig ), club composed of 3 distinctly divided antennomeres; Cuba, Hispaniola, and Puerto Rico................................................. 4

2. Elytron with a weak longitudinal elevation along elytral suture ( Fig. 9 View Figs ), only 1 long seta above lateral groove of elytra on basal fourth (if missing, distinct puncture present) ( Fig. 16c View Fig ); lateral pronotal margin above lateral bead, in dorsal view, sinuate on posterior third ( Fig. 9 View Figs ) ........................................ ........... P. beckeri Spiessberger and Ivie , new species

2ʹ. Elytron lacking elevation along elytral suture ( Figs. 7, 8 View Figs ), more than 1 long seta above lateral groove of elytra (if missing, distinct punctures are present) ( Figs. 16a, b View Fig ); lateral pronotal margins above lateral bead in posterior third nearly straight ( Figs. 7, 8 View Figs ) ........................ 3

3. Body size small, length 1.3–2.0 mm ( Fig. 8 View Figs ); strongly convex, rounded, posteriorly more declivous in lateral view ( Fig. 16b View Fig ); frons sparsely punctate, clypeus with few setae, mostly apico-laterally; antenna as in Fig. 15h View Fig ; aedeagus as in Fig. 17g View Fig .......................... ...... P. sandersoni Spiessberger and Ivie , new species

3ʹ. Body size large, length 2.4–3.3 mm ( Fig. 7 View Figs ); convex, more attenuate posteriorly, less declivous in lateral view ( Fig. 16a View Fig ); frons moderately punctate, clypeus with complete row of setae across apex; antenna as in Fig. 15g View Fig ; aedeagus as in Fig. 17f View Fig ................... .......... P. howdeni Spiessberger and Ivie , new species

4. Dorsal surface usually metallic green, blue to purple; elytron usually punctato-striate; pronotum widest at middle, anterior margin without bead ( Figs. 10–14 View Figs ); Cuba.......... 5

4ʹ. Dorsal surface not or occasionally weakly metallic; elytron impunctate or with punctures confusedly distributed; pronotum widest at base, anterior margin beaded or not ( Figs. 1–6 View Figs ); Hispaniola and Puerto Rico.... ....................................................... 9

5. Large species, 3.5–4.0 mm long ( Fig. 10 View Figs ); protibia sometimes ventrally glabrous between raised weak carinae on apical half; mesotarsomere 1 weakly to distinctly larger than 2 ( Fig. 16d View Fig ); antenna as in Fig. 15j View Fig ; aedeagus as in Fig. 17i View Fig .......................... ...... P. darlingtoni Spiessberger and Ivie , new species

5ʹ. Smaller species, 2.3–2.8 mm long; protibia cylindrical, ventrally setose on apical half; mesotarsomere 1 only slightly larger than 2 ( Fig. 16e View Fig ) .......................................... 6

6. Antenna unicolored ( Figs. 12, 14 View Figs ); antennomere 4 wider than long ( Figs. 15l, n View Fig ); head with punctures variable in size .............. 7

6ʹ. Antenna weakly bicolored, antennomeres 1–8 dark, apex of 9 pale ( Figs. 11, 13 View Figs ); antennomere 4 subquadrate or longer than wide ( Figs. 15k, m View Fig ); head with punctures subequal in size to eye facet ................. 8

7. Metanepisternum impunctate; head finely punctate, frons with punctures becoming sparser posteriorly; antenna as in Fig. 15l View Fig ; habitus as in Fig. 12 View Figs .............................. ............... P. felis Spiessberger and Ivie , new species

7ʹ. Metanepisternum with line of strong punctures; head coarsely punctate, frons with punctures evenly distributed; antenna as in Fig. 15n View Fig ; habitus as in Fig. 14 View Figs ................. ... P. auranticornis Spiessberger and Ivie , new species

8. Antennomeres 1–8 black, 9 with yellow apex; antennomere 3 distinctly longer than 2, 4 longer than wide ( Fig. 15k View Fig ); frons glabrous, punctures evenly distributed; pronotum coarsely punctate; aedeagus as in Fig. 17j View Fig ; habitus as in Fig. 11 View Figs .............................. ..... P. maestrensis Spiessberger and Ivie , new species

8ʹ. Antennomeres 1–8 dark yellow or brown, 9 yellowish at apex; antennomere 3 slightly longer than 2, 4 subquadrate ( Fig. 15m View Fig ); frons bearing long setae, punctures becoming sparser posteriorly; pronotum finely to moderately punctate; aedeagus unknown; habitus as in Fig. 13 View Figs ................................ .. P. turquinensis Spiessberger and Ivie , new species

9. Antenna bicolored from antennomere 5; intercoxal process of ventrite 1 broadly rounded between metacoxae ( Fig. 16g View Fig ); pronotum moderately transverse ( Fig. 1 View Figs ); antenna as in Fig. 15a View Fig ; aedeagus as in Fig. 17a View Fig ; habitus as in Fig. 1 View Figs ; Hispaniola ......... ........... P. duartei Spiessberger and Ivie , new species

9ʹ. Antenna unicolored, sometimes paler apically; intercoxal process of ventrite 1 between metacoxae acute ( Figs. 16i, j View Fig ), narrowly ( Fig. 16h View Fig ) or moderately rounded ( Fig. 16k View Fig ); pronotum strongly transverse ( Figs. 2–6 View Figs ); Hispaniola and Puerto Rico....................... 10

10. Anterior pronotal angles weakly projecting, somewhat acute; frons with confluent punctures, forming strigulae (more evident under LED white light); intercoxal process of ventrite 1 moderately rounded ( Fig. 16k View Fig ); antennomere 3 distinctly longer than 2 ( Fig. 15f View Fig ); integument always shiny; aedeagus with basale twice as long as apicale ( Fig. 17e View Fig ); habitus as in Fig. 6 View Figs ; Luquillo Forest, Puerto Rico.................... P. gracilicornis Spiessberger and Ivie , new species

10ʹ. Anterior pronotal angles rounded; frons without confluent punctures; intercoxal process of ventrite 1 acute ( Figs. 16i, j View Fig ) or narrowly rounded ( Fig. 16h View Fig ); antennomere 3 subequal to 2 ( Figs. 15b–e View Fig ); integument shiny or matte; aedeagus with basale subequal to apicale ( Figs. 17b–d View Fig ; unknown in P. unomas); Hispaniola and Puerto Rico.................................. 11

11. Anterior pronotal margin lacking bead or bead incomplete medially; antenna dark brown, sometimes paler towards apex; head width usually subequal to anterior margin of pronotum ( Figs. 2, 3 View Figs ); Hispaniola .............. 12

11ʹ. Anterior pronotal marginal bead complete; antenna red, yellow, or light brown; head narrower than anterior pronotal margin ( Figs. 4, 5 View Figs ); Puerto Rico............................. 13

12. Metanepisternum not distinctly separated from metaventrite; metaventrite weakly punctate to impunctate; antenna dark brown, sometimes lighter towards apex; body less convex in lateral view, more elongate, somewhat acute behind in dorsal view ( Fig. 2 View Figs ); aedeagus with median lobe projecting ventrally from apicale ( Fig. 17b View Fig ); antenna as in Fig. 15b View Fig ; Sierra de Neiba, Hispaniola .... .............. P. neiba Spiessberger and Ivie , new species

12ʹ. Metanepisternum distinctly separated from metaventrite; metaventrite strongly punctate; antenna dark brown; body more convex in lateral view, rounded behind in dorsal view ( Fig. 3 View Figs ); antenna as in Fig. 15c View Fig ; Cordillera Central, Hispaniola ................................ .......... P. unomas Spiessberger and Ivie , new species

13. Lateral area of metaventrite smooth or weakly punctate; aedeagus elongate and narrow, apicale converging at apical third and narrowed at apex ( Fig. 17c View Fig ); integument matte or shiny, microsculpture present on dorsal part (more nitid on matte forms); antenna red or yellow; habitus as in Fig. 4 View Figs ; Puerto Rico, widespread ......................... ........... P. obrieni Spiessberger and Ivie , new species

13ʹ. Lateral area of metaventrite strongly punctate; aedeagus short and wide, apex rounded, converging at apical fourth ( Fig. 17d View Fig ); integument shiny, weakly microsculptured dorsally; antenna yellow; habitus as in Fig. 5 View Figs ; Aguas Buenas, Puerto Rico..................... .............. P. pecki Spiessberger and Ivie , new species