Pentacomia, Bates. The, 1872

Moravec, Jiří & Brzoska, David, 2019, Taxonomic and nomenclatorial revision within the Neotropical genera of the subtribe Odontocheilina W. Horn in a new sense- 21. Pentacomia paranigrimarginata sp. nov. and P. nigrimarginata Huber with revised key to Pentacomia species (Coleoptera: Cicindelidae), Zootaxa 4612 (1), pp. 71-84 : 79-80

Key to species of Pentacomia

Protarsi in both sexes uniformly shaped (only somewhat narrower in female), protarsomeres 1–3 in male never distinctly dilated, undistinguished from protarsus 4 (all other genera of the subtribe differ in having sexually dimorphic protarsi with first three protarsomeres in male dilated, distinguished from thinner protarsomere 4). For the keys to other genera (previously subgenera of Pentacomia ) see in Moravec (2018a).

1 Dorsal pronotal surface covered with rather dense decumbent whitish setae on whole discal area, or the setae are sparse but covering at least dorsolateral areas of pronotal disc and usually also anterior and posterior lobe...................... 10

- Dorsal pronotal surface glabrous......................................................................... 2

2 Elytra entirely lacking whitish maculation, fiery reddish-cupreous to purple, usually with bronze-greenish lustre on posterior elytral third...................................................................... P. lanei (W. Horn, 1924)

- Whitish elytral maculation always present, consisting of subhumeral macula or oblique humeral band or lunule, lateromedian macula or short band either isolated from small central (discal) macula, or constantly or variably prolonged posteromesad towards the central macula and continuously merging with it, forming altogether lateromedian-discal band; anteapical macula either rather short, or elongated towards elytral apex......................................................... 3

3 Elytra with subhumeral whitish macula distinctly isolated from outer elytral margin (never placed on humerus, humeral lunule or oblique humeral band absent)......................................................................... 4

- Elytra with continuous obliquely elongate humeral bend or lunule (in dorsal view may appear as interrupted but in lateral view obvious as completely continuous)....................................................................... 6

4 Elytra bronze-cupreous, cupreous, black-coppery rarely deep green (never fiery-red to bright rutilant), lacking chatoyant catoptric patches.......................................................................................... 5

- Elytra conspicuously rutilant to fiery-red, usually with greenish margins or smaller green areas and limited smooth discal catoptric patches, cranked lateromedian-discal band continuous, confluent with discal macula (Fig, 28); pronotal dorsal surface covered with conspicuously continuous, densely arranged rugae obliquely converging towards median line............................................................................................. P. degandei (Tatum, 1850)

5 Lateromedian macula in form of a short and wide band, mostly with short postero-mesad directed protrusion, but isolated from small central (discal) macula ( Fig. 25 ), anteapical macula mostly wide and elongate, yet markedly distant from elytral apex; protarsomeres 1–4 rather wide, with subclavate to clavate apices (only slightly more dilated in male than in female); scape with one apical and one discal seta; pronotal disc generally subglobose......................... P. chrysamma Bates, 1872

- Elytral maculation very similar (very rarely the mesad directed protrusion of the lateromedian longitudinal macula connected with discal macula, forming thus interrupted or continuous, cranked discal band as in Figs 26–27 ); protarsomeres 1–4 markedly thinner; antennal scape with several discal setae ( Fig. 35 ) pronotal disc mostly notably narrower, particularly so in females.......................................................... P. chrysammoides Moravec, Huber & Dheurle, 2015

6 Elytral whitish maculation “complete”, wide anteapical-apical lunule reaching sutural spine and notably dilated upwards along suture ( Fig. 31 ), humeral lunule and cranked median-discal band continuous and wide; coloration variably metallic reddishcupreous or metallic-green to green-blue............................................ P. cupriventris ( Reiche, 1842)

- Elytral whitish maculation “complete”, but usually thinner and anteapical macula either isolated from apex, or if reaching sutural spine, then very narrow (never dilated along the suture upwards ( Figs 29–30, 32–34 ) ........................... 7

7 Elytral surface lacking smooth catoptric-chatoyant patches; they may possess only small, less distinct black patches...... 8

- Elytra with large or limited but conspicuous, irregularly rectangular, smooth catoptric-chatoyant patch placed in middle of elytral disc, and smaller catoptric patch on basodiscal convexity ( Figs 33–34 )..................................... 9

8 Complete elytral maculation comparatively thin and regular ( Fig. 29 ), narrow anteapical-apical macula almost or entirely reaching sutural spine; elytral surface almost even, punctation fine, lacking any chatoyant patches; pronotum elongate, dorsal surface with extremely dense, rugulose-tuberculate sculpture; male labrum prominently long, only somewhat shorter and only slightly differing in its shape from the female labrum................................... P. egregia (Chaudoir, 1835)

- Complete elytral maculation comparatively wider, humeral lunule shortly cranked mesad ( Fig. 32 ); elytral surface conspicu- ously uneven, punctation notably coarse with indistinct, smooth black patches; pronotal disc subglobose, its dorsal surface sculpture consisting of vermicular to obliquely running wavy rugae forming anteromedian and posteromedian radiate ornaments; male labrum markedly shorter than female one...................................... P. sericina (Klug, 1834)

9 Catoptric patch in middle of elytral disc large ( Fig. 33 ), irregularly rectangular, basal catoptric spot distinct; humeral lunule wide, completely obvious from above; body black-coppery; pronotal disc with fine surface sculpture of predominantly parallelarranged stria-like rugae; both penultimate and terminal palpomeres of maxillary palpi blackened; antennal scape with metal- lic-green tinge and only apical seta, male labrum with markedly prolonged median lobe...... P. speculifera (Brullé, 1837)

- Catoptric patch in middle of elytral disc much narrower ( Fig. 34 ), basal catoptric spot almost absent; only subhumeral portion of humeral lunule visible from above; body dorsally bronze-cupreous to bright-cupreous; pronotal disc generally narrower, cov- ered with much coarser, short zigzag arranged vermicular rugae; labrum with much shorter median lobe in both sexes; terminal palpomeres of maxillary palpi much paler; antennal scape ochre-yellow which apical seta and additional 1–4 discal setae ( Fig. 36 ).............................................................. P. davidpearsoni Moravec & Brzoska 2014

10(1) Setae scattered only on lateral areas of pronotal disc, or also on anterior pronotal lobe; antennae rather long and narrow, nor- mally shaped....................................................................................... 11

- Setae covering whole dorsal surface of pronotal disc ( Figs 9–10 ); whitish elytral maculation ( Figs 7–8 ) incomplete, laterome- dian macula prolonged along lateral margin posteriad and isolated from discal macula; anteapical macula short, distant from sutural spine; antennomeres 5–11 ( Figs 11–12 ) short, last two antennomeres notably dilated, terminal antennomere in male foliage-like; antennal scape with apical and at least two discal setae.................... P. paranigrimarginata sp. nov.

11 Setae sparsely covering only dorsolateral areas of pronotal disc ( Fig. 22 ); whitish elytral maculation incomplete, similar to the preceding species, but triangular lateromedian macula simple ( Figs 23–24 ); antennomeres elongate and notably narrower, antennal scape with only apical seta............................................. P. nigrimarginata Huber, 1999

- Setae scattered only on lateral areas and anterior lobe of pronotum; whitish elytral maculation ( Fig. 30 ) complete and rather thin (comparable to that in P. egregia ) consisting of humeral lunule, cranked lateromedian-discal band and narrow anteapical-apical lunule reaching sutural spine......................................................... P. vallicola Huber, 1999 .

Figures

FIGURES 25–36. Illustrative figures for the key to Pentacomia species. 25–28—incomplete whitish elytral maculation with isolated subhumeral macula and lateromedian macula either separated from discal macula, or partly to entirely merging with it: 25—P. chrysamma, ♂, Ecuador, Macas, LT (BMNH); 26–27—P. chrysammoides, Bolivia, Rio Chimoré, PT (ASUT); 28—P. degandei, ♂, Paraguay, Cerro Cora (CCJM). 29–30—complete elytral maculation with humeral lunule, cranked lateromediandiscal band and anteapical-apical lunule almost or entirely reaching sutural spine: 29—P. egregia, ♀, Bolivia, Rio Beni (DBCN); 30—P. vallicola, Bolivia, La Paz, PT (DBCN). 31—with anteapical-apical lunule dilated along suture upwards (P. cupriventris, ♂ ex Chaudoir, MNHN). 32—with humeral lunule shortly cranked mesad (P sericina, ♂, “Brasilia”, SDEI). 33–34—with cat- optric patches: 33—humeral lunule only partly obvious from above, discal catoptric path wide (P. speculifera, ♀, Bolivia, San Javier DBCN); 34—humeral lunule clearly obvious from above, discal catoptric path narrow (P. davidpearsoni, Bolivia, Camiri, HT, UASC). 35–36—antennal scape with apical and discal setae: 35—P. chrysammoides, Bolivia, Sapecho, PT (DBCN); 36—P. davidpearsoni, Bolivia, Rio Grande PT (DBCN). No scale.

FIGURES 1–10. Pentacomia paranigrimarginata sp. nov., Bolivia, Rio Piray. 1—habitus, ♂, HT (DBCN, later in UASC); 2– 3—labrum: 2—♂, HT; 3—♀, AT (DBCN); 4–5—head: 4—♂, HT; 5—♀, AT; 6—♂, apical half of aedeagus, HT; 7–8—elytron: 7—♂, HT; 8—♀, AT; 9–10—pronotum: 9—♂, HT; 10—♀, AT. Bars = 1 mm.

FIGURES 11–24. Two species of Pentacomia. 11–12—P. paranigrimarginata sp. nov., Bolivia, Rio Piray, antennomeres 7th– 11th: 11—♂, HT (DBCN, later in UASC); 12—♀, AT (DBCN). 13–24—P. nigrimarginata Huber, Bolivia, Villa Tunari. 13–14— antennomeres 7th–11th: 13—♂, PT (CCJM); 14—♀, PT (CCJM); 15–16—habitus: 15—♂, PT (DBCN); 16—♂ (CCJM); 17– 18—labrum: 17—♂, PT (DBCN); 18—♀, PT (DBCN); 19—head, ♂, PT (DBCN); 20—aedeagus, ♂, PT (DBCN); 21—ditto, internal sac; 22—pronotum, ♂, PT (DBCN); 23–24—elytron: 23—♂, PT (DBCN); 24—♀, PT (DBCN). Bars = 1 mm.