Cheilonycha bucephalauripennis, 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 : 522-530

Cheilonycha bucephalauripennis sp. nov.

Cheilonycha a. auripennis sensu auctorum (non Cheilonycha auripennis ( Lucas, 1857) ! Type locality. Brazil: Jataí, state of Goiás (Jatahy and Goyaz on the labels).

Type material. Holotype ♂ in MNHN, labelled: “ Brésil, Jatahy / Prov. de Goyaz ” [obscure-greenish with black border, handwritten] // “Muséum Paris / Ex Coll. M. Maindron / Coll. G. Babault ”[greenish with black border, printed] // “ Holotype / Cheilonycha / bucephalauripennis sp. nov. / det. Jiří Moravec 2019 ” [red, printed] . Allotype. 1 ♀ in MNHN: “ Brésil / Ét. [ État ] de Goyaz / Jatahy / Pujol [leg.] 12.97 [1897]–1.98 [1898]” [ochre, printed] // “Muséum Paris / Coll. E. Gounelle 1915” [greenish, printed]. “ Allotype / Cheilonycha / bucephalauripennis sp. nov. / det. Jiří Moravec 2019 ” [red, printed] . Paratypes. 2 ♀♀ in MNHN [with same locality label as in holotype] . 1 ♂ in MNHN : “ Brésil / État de Goyaz / Pujol 12-97; 1-98”. 1 ♀ in MNHN , 1 ♂ in BMNH : “Brasilia / Prov. Goyaz” [hand- written] // “ Jatahy / Prov. Goyaz , Brésil / Déc. 97 – Janv. 98” [obscure-greenish, printed] // “Fry Coll. / 1905-100” [printed] . 1 ♂ in IRSNB : “ Goyaz ” [handwritten] // “ Coll. J. Muller / Cheilonycha / auripennis Luc. / B.M.N.H.B. 16.346” [printed] . 1 ♀ in IRSNB : “ Goyas / Amerique ” [handwritten]. 1 ♂, 2 ♀♀ in BMNH “ Jatahy / Prov. Goyaz , Brésil / Déc. 97 –Janv. 98” [obscure-greenish, printed] // “ Cheilonycha / auripennis / Co type / Lucas”[sic! subse- quently handwritten on the label] // “ F. Bates Coll. / 1911–248” [printed] . 11 ♂♂, 14 ♀♀ in MNHN : “ Jatahy / État de Goyaz / Ch. Pujol 1895–96 // “Muséum Paris / 1952 / Coll. R. Oberthür ” . 2 ♂♂, 7 ♀♀ in SDEI , 1 ♀ in NHMW , 1 ♀ in NMPC : “ Brésil / État de Goyaz / Jatahy / de Pujol [dated mostly within 1895–98 some of them with labels of their original collections]. All paratypes labelled: “ Paratype / Cheilonycha / bucephalauripennis sp. nov. / det. Jiří Moravec 2019 ” [red, printed] .

Other material examined. 1 ♀ in IRSNB [no locality label]: “ Ch. auripennis Luc. ” // “Collection / E. Rous- seau” .

Differential diagnosis. The new species is distinguished from the type specimens and the original description of Ch. auripennis ( Lucas, 1857) , as well as from the above-described Ch. a. chiquitosiana ssp. nov. by its notably larger body, 13–14 mm long, and shape of the head particularly in males; the head is notably robust in vertex-occipital and temporal areas (as clearly obvious in dorsal view, Figs 97–99 ), in contrast to much smaller, notably less bulged eyes; due to the smaller eyes the head (measured across the eyes) is notably narrower than body; the elytra of Ch. bucephalauripennis sp. nov. are notably more elongate and in contrast to those in Ch.a. auripennis , in males of this new species they are often widest at humeri ( Figs 90, 92 ) and moderately narrowed towards apices—in females ( Fig. 91 ), rarely in males, the elytra may be subparallel, but never markedly dilated posteriad; male labrum ( Figs 100–102 ) possesses tridentate median lobe with teeth in the same level as in Ch. a. chiquitosiana, but the median lobe in the new species is only moderately prolonged anteriad; moreover, the colour of the head ( Figs 93–95, 97–99 ) is generally more vividly iridescent-green, the iridescent green coloration is mostly present also on the pronotal surface, thus less contrasting with the elytral coloration ( Figs 85–86 ); the extremely fine surface sculpture of the head is prevailingly asperate, even finer than the fine vermicular sculpture in the two preceding taxa.

Nine specimens of Ch. auripennis deposited in DZRJ (seen from photographs sent by André Silva Roza, DZRJ, pers. com), coming from the same state of Goiás, but from northern area of the state, also possess green head and pronotum. However, they are immediately distinguished from Ch. bucephalauripennis sp. nov. by their small body (9.60–10.8 mm long), head with markedly bulged eyes and posteriad-dilated elytra, the characters shared with Ch. a. auripennis .

Description. Largest species of the genus. Body ( Figs 85–86 ) large and robust (but elytra generally more elongate and less convex than in Ch. a. auripennis (thus even slightly more elongate than in Ch. a. chiquitosiana), 13.0–14.2 (HT 14.0, AT 13.5) mm long, 4.50–4.90 (HT 4.70, AT 4.60) mm wide.

Head ( Figs 93–95, 97–99 ) predominantly metallic green, notably wide and robust at occipital and temporal areas, as clearly obvious in dorsal view ( Figs 97–99 ), in contrast to comparatively small eyes which are notably less bulged that in the other taxa of the genus, width 3.40– 3–60 mm.

Frons obtusely convex in middle when sloped towards clypeus, surface iridescent green with blue lustre, covered with extremely fine longitudinal wrinkles, fluently passing to vertex; supraantennal plates mostly metallicblue.

Vertex wide, iridescent green to green-blue, widest between posterior arcuate part of narrow juxtaorbital edges which are moderate-sinuously narrowed anteriad towards supraantennal plates; median area between eyes almost flat or moderately convex, lacking any impressions, extremely finely irregularly rugulose, anteromedian portion finely asperate (the extremely fine sculpture passing from frons), juxtaorbital areas finely parallel-striate, but striae usually irregular and fragmented (in females the fine surface sculpture is generally somewhat coarser and more clearly differentiated than in males); posterior and occipital area notably wide and moderately but widely convex, prevailingly extremely finely vermicular-asperate except for several somewhat coarser irregular rugae on temples, passing on genae.

Genae iridescent green, usually with changeable purple-violet posterior area, with dense and very fine parallel striae, or almost smooth in middle.

Labrum 4-setose, sexually dimorphic, smooth, iridescent green or green-blue, usually with also changeable faint violet iridescence, moderately convex in middle; male labrum ( Figs 100–102 ) comparatively long, 0.90–1.00 mm long, 1.65–1.75 mm wide, with mostly acute basal teeth, roundly indicated lateral teeth, and moderately anteriad-prolonged tridentate anteromedian lobe with teeth almost in the same level; female labrum ( Fig. 103 ) longer, 1.10–1.20 mm long, 1.55–1.65 mm wide, with acute basal teeth, rounded but mostly developed lateral teeth, and prolonged tridentate median lobe with protruding median tooth between right-angled anterolateral teeth.

Clypeus mostly iridescent green or green-blue, simply aliform, surface irregularly wrinkled.

Palpi (partly obvious in Figs 93–94 ) generally coloured and shaped as in Ch. a. auripennis .

Antennae ( Figs 86 , 93–95, 97–99 ) shaped and coloured as in Ch. a. auripennis , but notably shorter, in female barely passing elytral quarter; scape with two apical setae arising from closely placed setigerous punctures (setae easily abraded).

Mandibles ( Figs 93–96 ), shaped as in preceding species, but notably more robust.

Thorax. Pronotum ( Figs 87–88 ) glabrous, generally shaped as in preceding species, but with lateral margins more distinctly convex, more distinctly wider than long, length 2.50–2.80 mm, width 2.90–3.30 mm, mostly iridescent green on anterior lobe and disc while deep violaceous on posterior lobe, rarely also with violaceous lateral areas of the disc, or (very rarely) the whole surface dark olivaceous with faint violet areas; all ventral and lateral thoracic sterna as in preceding species, but more often with strong green lustre.

Elytra ( Figs 90–92 ) immaculate, usually slightly more elongate than in preceding taxon, 8.50–8.70 mm long, usually widest at humeri and moderately narrowed towards apices; in females ( Fig. 91 ), rarely also in males the elytra may be subparallel, but never markedly dilated posteriad; anteapical angle widely arcuate mostly continuously forming rounded apex which is only indistinctly indented from small sutural spine; elytral disc distinctly convex, but less distinctly than in preceding two taxa, and usually somewhat less distinctly sloped towards apex; humeral impression rather distinct, discal impression shallow or indistinct but rarely entirely absent; anteapical impression deep, usually running along the whole outer anteapical margin, sometimes more distant from the margin; whole surface covered with mostly isolated and rather spaced punctures which are much coarser on anterior elytral third, usually irregular when running within humeral impression and sometimes also in a short longitudinal area of dense and irregular punctures on elytral base and irregularly with deep, 3–5 fovea-like punctures running in a row along the elytral disc posteriad; elytral punctation become smaller posteriad, punctures very fine and widely spaced on posterior elytral half or third, but again coarser and irregular on apex; elytral surface glabrous, coloration mostly prevailingly shiny green except for shiny red-cupreous or golden bronze-cupreous discal area; juxtaepipleural area shiny green or green-blue with indistinct, short whitish setae scattered at epipleuron.

Legs generally as in Ch. a. auripennis and preceding taxa.

Abdomen generally as in the two subspecies of Ch. auripennis , but prevailingly with shiny green lustre.

Aedeagus ( Figs 104–105 ) shaped as in the two subspecies of Ch. auripennis (within the same variability), 2.9–3.20 mm long, 0.50–0.60 mm wide; internal sac Figs (106–107) basically as in Ch. a. auripennis .

Etymology. Derived from ancient Greek bouχέφαλος “having bull head” (originating from the head of the warhorse owned by Alexander the Great (see Pražák et al. 1955), referring to the shape of the male head in this new species.

Distribution and biology. The examined type specimens of Ch. bucephalauripennis sp. nov. come from the type locality Jataí (= Jatahy) a large municipality in the southwest area of the Brazilian state of Goiás (= Goyaz).

Remarks. The specimens (BMNH) of this new species with additionally handwritten “Cotype Lucas” on their locality labels cannot be syntypes of Ch. auripennis , because they did not come from Lucas and differ from the lectotype; according to their locality labels they were collected much later, in December 1897 – January 1898.

See also the discussion under Ch. a. auripennis above.

Figures

FIGURES 93–103. Cheilonycha bucephalauripennis sp. nov., all from Brazil, Jataí (Jatahy on labels). 93–95––head: 93––♂, HT (MNHN); 94––♂, PT (MNHN); 95––♂, PT (SDEI); 96––ditto, mandibles; 97–99––head in dorsal view: 97––♂, PT (SDEI); 98––♂, HT (MNHN); 99––♂, PT (MNHN); 100–103––labrum: 100––♂, HT; 101––♂, PT (MNHN); 102––♂, PT (SDEI); 103––♀, AT (MNHN). Bars = 1 mm.

FIGURES 85–92. Cheilonycha bucephalauripennis sp. nov., all from Brazil, Jataí (Jatahy on labels). 85–86––habitus: 85––♂, 14 mm, HT (MNHN); 86––♂, 13 mm, PT (MNHN); 87–88––pronotum: 87––♂, HT; 88––♀, AT (MNHN); 89––labels of HT; 90–92––elytron: 90––♂, HT; 91––♀, AT; 92––♂, PT (MNHN). Bars = 1 mm.

FIGURES 104–107. Cheilonycha bucephalauripennis sp. nov., all from Brazil, Jataí (Jatahy on labels), male aedeagus or its apex. 104––HT (MNHN); 105–– PT (SDEI); 106–107––ditto, internal sac in left and right lateral view. Bars = 1 mm.