Dendropaemon (Coprophanaeoides) bluti Génier & Arnaud, 2016

François Génier & Patrick Arnaud, 2016, Dendropaemon Perty, 1830: taxonomy, systematics and phylogeny of the morphologically most derived phanaeine genus (Coleoptera: Scarabaeidae, Scarabaeinae, Phanaeini), Zootaxa 4099 (1) : 8-9

1. Dendropaemon (Coprophanaeoides) bluti Génier & Arnaud , new species

( Figs. 1 , 110 , 156 )

Type locality. Culiseu, Quellgebiet des Xingu, Brasilien.

Diagnosis. The acutely notched external side of each clypeal tooth will place this species in Coprophanaeoides . Within Coprophanaeoides , the completely glabrous pronotum will separate it from D. carinifer , D. compressipennis , D. cribrosus , D. furtadoi , D. hirticollis and D. pilosissimus . The distinct pronotal posterior edge will separate it from. D. inemarginatus . Its smaller size and well defines elytral striae will separate it from D. inflatus and finally the smaller eyes and less produced anterior pronotal angles will separate it from D. renatii .

Description. Female holotype ( Fig. 1 ). Body. Body moderately large, length 12.5 mm, maximum width 7.0 mm; body subrectangular in dorsal view; dorsum narrowly flat. Color. Dorsal surface black, glossy, with green metallic sheen; head with green metallic sheen on genae and frons; pronotum with green metallic sheen except disc and irregular area laterally; elytra with uniform green metallic sheen; ventrum with faint greenish metallic sheen; pygidium with green metallic sheen; legs with coppery and greenish metallic sheen on femora and tibiae. Head. Clypeus broadly arcuate, anterior portion upturned; clypeal teeth ogival; clypeal median emargination narrowly vshaped, clypeal edge acutely notched on external side of each clypeal tooth, clypeal teeth ventral surface lacking carina, clypeal margin ill-defined, lacking sharp carina posteriorly, clypeal surface with transverse blunt rugulae; clypeogenal suture well-defined, bluntly carinate internally; genal surface with ill-defined rugulae and minute tubercles laterally, smooth internally, lacking distinct transverse carina, simply convex; clypeofrontal carina low, more than 6 times wider than high, straight in dorsal view, simply carinate, clypeofrontal carina apical edge straight in frontal view; eyes small in dorsal view, interocular ratio 4.7. Pronotum. Pronotum transverse in dorsal view, pronotal width/length ratio 1.5; disc of pronotum smooth basally, with transverse rugulae anteriorly, with an illdefined shallow longitudinal depression on posterior half; pronotal anterior margin wider and flat lateral to eyes; anterior portion with a transverse anteriorly arcuate carina; anterior angles surface finely granulate, similar to lateral margin along posterior edge of anterior margin; lateral fossae oval, bordered laterally by a blunt carina and anteriorly by a blunt tubercle; lateral portions strongly explanate; pronotal basal fossae ill-defined, slightly concave; posterior margin well-defined, lacking crenulation and setae. Elytra. Elytra approximately as long as wide in dorsal view, elytral combined width/length ratio 1.1; elytral base distinctly marginate; elytral striae 1–4 moderately wide basally and fine apically, evenly impressed throughout, elytral striae 5 similar to 4 on disc, strial punctures fine and well-defined, adjacent strial edge encroaching on interval, stria 1 weakly impressed apically, going straight to elytral apical margin; interstriae slightly convex, minutely punctate throughout, surface glossy. Thoracic sterna. Proepisternal carina absent; metasternal median lobe angularly produced anteromedially, ventral ridge well-defined, y-shaped. Legs. Profemur posterior surface slightly but distinctly convex and glabrous internally, posterointernal margin rather thin, uneven, internal edge rather wide, with a contiguous row of setae along anterointernal edge and few scattered long setae on anterior half, remaining surface smooth. Protibia with four teeth on lateral edge; internal basal angle lobate; anterior surface with long aligned row of setae internally, surface glossy or feebly microsculptured between punctures; posterior surface with rugose irregular punctures externally to median carina, surface glossy between punctures, with a single interrupted setal row along lateral teeth. Mesofemur angularly produced on anterointernal edge apically. Mesotibia rather short, gradually widening toward apex in anterior view; anteroapical edge straight in anterior view, anteroapical row of setae complete; apicoanterior edge circularly indented internally; external edge more or less rounded, with several large elongate setiferous punctures. Mesotarsus similar in shape to metatarsus, three-segmented, first segment short, approximately as long as wide at apex. Metafemur broadly oval in anterior view, lacking distinct depressed area anterointernally before apex, apicoposterior edge unmodified, anterior surface with an irregular fine sulcus medially. Metatibia rather slender, gradually widening toward apex in anterior view, anterior surface with distinct row of setae, surface glossy, metatibial posterior surface flat between longitudinal row of setae and lateral edge, glossy between punctures. Metatarsus three-segmented ( Fig. 110 ), first segment moderately elongate, approximately two times as long as wide at apex, with anterointernal carina well defined and almost reaching apical edge. Abdominal sternites. Sternites 3–6 longitudinally flat; sternites 4–6 with 1–3 unaligned rows of setae laterally, glabrous medially; sternite 7 approximately longitudinally flat medially, subequal in length to segment 6 along midline; pygidium minutely punctate on disc.

Measurements (1 female). Length: 12.5 mm.

Primary type data. Holotype female (ZMHB): [♀]; [Campos] handwritten, green card; [1.- 10.9.1887 / 2. Xingu-Expd.] handwritten; [ Brasilien / Quellgebiet d. Xingu,/ Culiseu/Ehrenreiche S.] green card; [ Dendropaemon / renatii Olsuf. ♀/ Xingu, Blut det. 1938] handwritten; [WORLD/ SCARAB./ DATABASE/ WSD00016732]; HOLOTYPE / Dendropaemon / bluti n.sp. / Génier & Arnaud, 2014] red card.

Material examined. Primary type only.

Etymology. A patronym in honor of Heinrich Blut who published on the genus in 1939.

Natural history. Unknown.

Remarks. Male and variation unknown.

Blut misidentified this species as D. renatii and redescribed D. renatii as D. refulgens olsufieffi .

Figures

FIGURE 156. Known distribution of D. bluti, D. carinifer, D. compressipennis, D. cribrosus, D. furtadoi, D. hirticollis, D. inflatus, D. pauliani, D. pilosissimus, D. renatii.

FIGURES 1 – 6. Dorsal habitus. 1. D. bluti, male holotype; 2. D. carinifer, male holotype; 3. D. compressipennis, male holotype; 4. D. cribrosus, male holotype; 5. D. furtadoi, male holotype; 6. D. hirticollis, female holotype.

FIGURES 110 – 117. Metatarsus, ventral view. 110. D. bluti; 111. D. carinifer; 112. D. aenigmaticus; 113. D. amazonicus; 114. D. angustulus; 115. D. viridis; 116. D. viridipennis; 117. D. convexus.