Dendropaemon (Coprophanaeoides) pilosissimus 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) : 20-21

9. Dendropaemon (Coprophanaeoides) pilosissimus Génier & Arnaud , new species

( Fig. 9 , 156 )

Type locality. Parque Nacional Cerro Corá, Departamento Amambay, Paraguay.

Diagnosis. The three-segmented meso- and metatarsi combined with the acutely notched external side of each clypeal tooth will place this species in Coprophanaeoides . Within Coprophanaeoides , the completely and rather uniformly setose interstriae 8 will separate it from all other species.

Description. Female holotype ( Fig. 9 ). Body. Body moderately large, length 15.5 mm, maximum width 8.0 mm; body subrectangular in dorsal view; dorsum narrowly flat. Color. Dorsal surface black, glossy, with green metallic sheen; head with green metallic sheen on lower surface of posterior half of head; pronotum with green metallic sheen on lower surface of anterior and lateral declivities and median sulcus; elytra with uniform green metallic sheen; ventrum with faint greenish and coppery metallic sheen; pygidium with green metallic sheen; legs with coppery and greenish metallic sheen on femora and tibiae. Head. Clypeus broadly arcuate, anterior portion slightly upturned; clypeal teeth ogival; clypeal median emargination v-shaped, 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 anteriorly and small rough irregular tubercles posteriorly; clypeogenal suture well-defined, bluntly carinate internally; genal surface with small and blunt irregular tubercles, lacking distinct transverse carina, simply convex; clypeofrontal carina low, more than 6 times wider than high, slightly arcuate in dorsal view, simply carinate, clypeofrontal carina apical edge slightly sinuous medially in frontal view; eyes moderately large in dorsal view, interocular ratio 5.2. Pronotum. Pronotum transverse in dorsal view, pronotal width/length ratio 1.5; disc of pronotum minutely punctate basally with large confluent setiferous puncture medially changing into dense squamose and setiferous rugulae anteriorly, with an illdefined shallow longitudinal depression on posterior half; pronotal anterior margin unmodified lateral to eye; anterior portion with a simple anteriorly arcuate carina; anterior angles surface with fine setiferous granules, similar to lateral margin along posterior edge of anterior margin; lateral fossae oval, bordered laterally by a sharp carina and anteriorly by a blunt tubercle; lateral portions strongly explanate; pronotal basal fossae ill-defined, slightly concave; posterior margin well-defined and crenulate, with several long 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, narrower and ill-defined on posterior half, evenly impressed throughout, elytral striae 5 similar to 4 on disc, strial punctures fine, well-defined and setiferous, adjacent strial edge encroaching on interval, stria 1 weakly impressed apically, going straight to elytral apical margin; interstriae slightly convex, minutely punctate and with numerous larger setiferous punctures along striae, 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 some ill-defined rugose punctures externally to median carina, surface glossy between punctures, with a single interrupted setal row along lateral teeth. Mesofemur obtusely angular on anterointernal edge apically. Mesotibia rather short, gradually widening toward apex in anterior view; anteroapical edge slightly sinuate 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, 3-segmented, first segment moderately elongate, approximately two times as long as wide at apex. Metafemur elongate, internal and lateral edges slightly but distinctly arcuate in ventral view, more than twice as long as wide, lacking distinct depressed area anterointernally before apex, apicoposterior edge unmodified, anterior surface with a well-defined sulcus on median half. 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, with ill-defined microsculpture. Metatarsus 3-segmented, first segment moderately elongate, approximately two times as long as wide at apex, with anterointernal carina well defined and reaching apical edge. Abdominal sternites. Sternites 3–6 longitudinally flat; sternites 4–6 with more than three unaligned row of setae laterally, narrowly glabrous on segment 4 and with a single row of setae medially on segments 5–6; sternite 7 approximately longitudinally flat medially, subequal in length to segment 6 along midline; pygidium finely punctate on disc.

Measurements (1 female). Length: 15.5 mm.

Primary type data. Holotype female (FSCA): [ PARAGUAY: Dpto./ Amambay:/ P.N. Cero Corá/ 12– 16.x.1981 / Colr. J.Kochalka]; [WORLD/ SCARAB./ DATABASE/ WSD00016763]; [HOLOTYPE ♀/ Dendropaemon / pilosissimus / Génier & Arnaud, 2014] red card.

Material examined. Primary type only.

Etymology. Pilosissimus , an adjective derived from pilosus (hairy) combined with the magnifier “-issimus” relating to the extreme pilosity of this species.

Natural history. Unknown.

Remarks. Male and variation unknown.

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 7 – 12. Dorsal habitus. 7. D. inflatus, female holotype; 8. D. pauliani, female holotype; 9. D. pilosissimus, female holotype; 10. D. renatii, female holotype; 11. D. aenigmaticus, male holotype; 12. D. amazonicus, male holotype.