Cheilonycha auripennis chiquitosiana, Moravec, 2019

Moravec, Jiří, 2019, Taxonomic and nomenclatorial revision within the Neotropical genera of the subtribe Odontocheilina W. Horn in a new sense- 22. Genus Cheilonycha Lacordaire, 1842 (Coleoptera: Cicindelidae), Zootaxa 4700 (4), pp. 501-534 : 519-522

Cheilonycha auripennis chiquitosiana ssp. nov.

Type locality. Bolivia: 6.4 km south, 9 km southwest of San José de Chiquitos , department of Santa Cruz .

Type material. Holotype ♂ in DBCN, later in UASC, labelled: “ Bolivia—Santa Cruz / 6.4 km S— 9 km SW / San José Chiquitos, 730 m / D. Brzoska 2-XII-1995 ” // “ Holotype / Cheilonycha auripennis / chiquitosiana ssp. nov. / det. Jiří Moravec 2019 ” [red, printed] . Allotype ♀ in DBCN with same labels as holotype and: “ Allotype / Cheil- onycha auripennis / chiquitosiana ssp. nov. / det. Jiří Moravec 2019 ” [red, printed] . Paratypes. 1 ♂, 5 ♀♀ in DBCN , 2 ♂♂, 2 ♀♀ in CCJM , with same labels as in holotype. 5 ♂♂, in DBCN , 1 ♂ in CJVB , 3 ♀♀ in CCJM , 1 ♂, 1 ♀ in MNHN , 1 ♀ in SDEI : “ Bolivia—Santa Cruz / 13.8 km S—/ San José Chiquitos, 365 m / D. Brzoska 2-XII-1995 ” . 1 ♂ in DBCN : “ Bolivia—Santa Cruz / 18 km SW / San José de / Chiquitos / D. L. Pearson 18-XII-1993 ” . 4 ♂♂, 9 ♀♀ in COSJ , 1 ♂, 1 ♀ in CCJM , 1 ♀ in CJVB : “ Bolivia: Santa Cruz depart. / 10 km S San José de Chiquitos / S17°55´35´´; W60°47´32´´, 604 m / 10.XII.2013, O. Šafránek lgt.” . 1 ♂ in RLHC : “ Bolivia, Santa Cruz / Parq. Nac. M. Kempf / 1 Jan. 1992 (400m) / F.Guerra, S. Otazu ” . 1 ♀ in RLHC with same labels except for “ 4 Jan. 1992 ” .

Differential diagnosis. The new subspecies shares similar shape of the head and mostly also posteriad-dilated elytra with Ch. a. auripennis but differs by a very different shape of the male labrum possessing notably prolonged tridentate median lobe with anterior teeth in almost same level ( Figs 73–75 ). Although the shape of the labrum in Cheilonycha is rather variable, the diagnostic shape of the male labrum constantly occurs in all examined males from San José de Chiquitos in the Bolivian department of Santa Cruz. In contrast, the male labrum of the nomino- typical subspecies (including the synonymous ssp. angustedilatata ) is with much shorter and indistinctly profiled median lobe, thus its imaginary outline is sometimes almost semicircular due to effaced or rounded anterolateral teeth, with only small median tooth between blunt or almost effaced outer anterior teeth ( Figs 34–38 ).

Description. Body ( Figs 62–63 ) rather variably sized independent of sex, 10.0–12.0 (HT 11.5) mm long, 3.60– 4.20 (HT 4.00) mm wide, virtually shaped and coloured as in Ch. a. auripennis , but as a whole very slightly more elongate.

Head ( Figs 22 , 71–72 ) normally shaped with large, bulged eyes (but generally slightly less bulged than in the nominotypical subspecies), 3.00– 3.35 mm wide, metallic black-blue, sometimes with violet iridescence and faint green lustre on lateral areas.

Frons and vertex shaped and sculptures as in Ch. a. auripennis .

Genae as in Ch. a. auripennis .

Labrum 4-setose, sexually dimorphic, smooth, metallic blue with changeable violet or green iridescence, moderately convex in middle; male labrum ( Figs 73–75 ) comparatively long, length 0.70–0.85 mm, width 1.20–1.35 mm, with mostly acute basal teeth, entirely effaced lateral teeth, and notably anteriad-prolonged tridentate anteromedian lobe with teeth almost in the same level; female labrum ( Figs 76–78 ) much longer, 1.00– 1.15 mm long, 1.35–1.50 mm wide, distinguished by distinctly prolonged median tooth; in one female the labrum is anomalously shaped ( Fig. 40 ).

Clypeus concolorous with labrum, simply aliform, surface irregularly wrinkled.

Mandibles ( Figs 64 , 71–72 ) generally as in Ch. a. auripennis , metallic black with very faint violet or green iridescence, normally shaped with arcuate lateral margins, rather long, in males with moderately but notably prolonged basal portion; subsymmetrical, each mandible in both sexes with four teeth (and basal molar), inner teeth gradually smaller towards basal molar, fourth tooth in right mandible notably smaller.

Palpi ( Figs 64 , 71–72 ) coloured and shaped as in Ch. a. auripennis .

Antennae ( Figs 62–64 , 71–72 ) shaped and coloured as in Ch. a. auripennis .

Thorax. Pronotum ( Figs 79–80 ) glabrous, slightly but notably wider than long, length 1.90–2.20 mm, width 2.05–2.30 mm, shaped and coloured as in Ch. a. auripennis ; all ventral and lateral thoracic sterna glabrous, shaped, coloured and with surface as in Ch. a. auripennis .

Elytra ( Figs 81–84 ) usually slightly more elongate than in Ch. a. auripennis , 6.30–7.50 mm long, generally shaped as in the nominotypical subspecies with outer margins slightly but usually notably dilated towards anteapical angles, but sometimes not so notably; anteapical angles arcuate, then obliquely running towards apex which is rounded towards indistinct sutural spine; elytral disc distinctly convex, but sometimes less distinctly than in Ch. a. auripennis , and usually slightly less distinctly sloped towards apex; humeral impression rather distinct, discal impression indistinct or absent; anteapical impression deep, usually running along the whole outer anteapical margin; whole surface covered with mostly isolated and rather spaced punctures which are much coarser on anterior elytral third, very irregular when running within humeral impression and usually also in a short row on elytral base and few, mostly indistinct and irregularly spaced fovea-like punctures running posteriad along the elytral disc; punctures become smaller posteriad, usually, but not always very fine and widely spaced on posterior elytral half or third ( Figs 81–82, 84 ), while limited apical area usually with coarser and irregular punctures; rarely elytral surface rather coarsely punctate throughout ( Fig. 83 ); elytral surface glabrous, immaculate; coloration either prevailingly shiny red-cupreous with golden-bronze areas which may be prevailing; juxtaepipleural area shiny green or green-blue with indistinct, short whitish setae scattered at epipleuron.

Legs generally shaped and with setae as in Ch. a. auripennis , metallic black but usually with more intense purple-violaceous lustre and blue or greenish iridescence on femora and tibiae.

Abdomen generally as in Ch. a. auripennis .

Aedeagus ( Figs 65–68 ) elongate, widest in middle, conically attenuated towards rounded, slightly ventrally directed apex; internal sac ( Figs 69–70 ) well-armed, upper sclerites mostly membranous, while basal pieces distinctly sclerotized, consisting of thin and rather short dorsal stick-like piece, basal-central spur with wide, almost triangular base and barely visible its elongate-ovaliform upper portion, associated with the central tooth of which only its part is obvious in left lateral view ( Fig. 69 ), imitating a thin filiform piece, but in fact it is the wall of one of two partly sclerotized central teeth which are clearly recognizable in right lateral view ( Fig. 70 ); other diagnostic sclerite is basal-ventral spur with narrowly triangular base.

Etymology. Named after the town of San José de Chiquitos in the area of the type locality of this new subspe- cies.

Distribution and biology. Bolivia. The type specimens come from area near the town of San José de Chiqui- tos in the Bolivian department of Santa Cruz, two paratypes come from the National Park Noel Kempff Mercado. Specimens of populations from other localities in the same large department of Santa Cruz, such as other specimens from the Noel Kempff Mercado, from Ñuflo de Chavez, San Ramon, and Santa Rosa del Sara in the province of Sara, listed by Pearson, Guerra & Brzoska (1999) were not available for my examination; they are not included into the type series.

Figures

FIGURES 71–84. Cheilonycha a. chiquitosiana ssp. nov., all from Bolivia, San Chose de Chiquitos. 71–72––head: 71–– ♂, HT (UASC); 72––♀, PT (CCJM); 73–78––labrum: 73––♂, HT; 74––♂, PT (DBCN); 75––♂, PT (CCJM ex COSJ); 76––♀, AT; 77–78––♀, PT (CCJM and DBCN); 79–80—pronotum: 79––♂, HT; 80––♀, AT (DBCN); 81–84––elytron: 81––♂, HT; 82––♀, PT (CCJM); 83––♀, PT (DBCN); 84––♂, PT (DBCN). Bars = 1 mm.

FIGURES 25–42. Cheilonycha a. auripennis (Lucas). 25–29––head: 25––♀, “Brésil intérieur”, LT (MNHN); 26––♀, Para- guay, Mbaracayu (CCJM); 27––♂, Paraguay, LT of syn. C. a. angustedilatata W. Horn (SDEI); 28–29––♂, Mbaracayu (CCJM); 30–33––left mandible, ibid. (CCJM): 30–32––♂; 33––♀; 34–42––labrum: 34––♂, LT of syn. C. a. angustedilatata W. Horn (SDEI); 35–37––♂, Mbaracayu (CCJM); 38––♂, Brazil, Cuyaba (SDEI); 39––♀, LT (MNHN); 40–– anomalous labrum, ♀, PLT of syn. C. a. angustedilatata W. Horn (SDEI); 41––♀, Mbaracayu (CCJM) 42––♀, Argentina, Catamarca, PLT of syn. C. a. angustedilatata (SDEI). Bars = 1 mm.

FIGURES 62–70. Cheilonycha a. chiquitosiana ssp. nov., all from Bolivia, San Chose de Chiquitos. 62–63––habitus: 62–– ♂, 11.4 mm, HT (UASC); 63––♂, 11.5 mm, PT (CCJM ex COSJ); 64––head in dorsal view, ♂, PT (DBCN); 65–70––aedeagus or its apex: 65––HT; 66––PT (DBCN); 67––PT (CCJM) 68—ditto, dry; 69–70–– ditto, internal sac in left and right lateral views. Bars = 1 mm.

FIGURES 19–24. Cheilonycha a. auripennis (Lucas). 19–21––habitus: 19––♀, 10.3 mm, “Brésil intérieur”, LT (MNHN); 20––♂, 11 mm, Paraguay, LT of syn. C. a. angustedilatata W. Horn (SDEI); 21––♂, 11.2 mm, Paraguay, Mbaracayu (CCJM); 22––head in dorsal view, ibid. (CCJM); 23–24––labels: 23––LT (MNHN); 24––LT of syn. C. a. angustedilatata W. Horn (SDEI).