Dendropaemon (Sulcopaemon) nitidicollis Olsoufieff, 1924

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) : 75-76

38. Dendropaemon (Sulcopaemon) nitidicollis Olsoufieff, 1924

( Figs. 38 , 102–103, 131, 152, 160)

Dendropaemon nitidicollis Olsoufieff 1924 , Insecta 13: 130 (original description)

Dendropaemon nitidicollis: Blut 1939 , Arch. Naturg. (N.F.) 8: 273 (monograph)

Dendropaemon subcylindricus Blut 1939 , Arch. Naturg. (N.F.) 8: 283 (original description) new synonymy Dendropemon nitidicolle: Blackwelder 1944 , U.S. Nat . Mus. Bull. 185: 211 (checklist)

Dendropemon subcylindricum: Blackwelder 1944 , U.S. Nat . Mus. Bull. 185: 211 (checklist) Dendropaemon (D.) nitidicollis: Edmonds 1972 , Univ. Kansas Sc. Bull. 49: 850 (comment taxonomy) Dendropaemon subcylindricum: Edmonds 1972 , Univ. Kansas Sc. Bull. 49: 851 (comment taxonomy) Dendropaemon nitidicollis: Arnaud 1982 , Rev. Fr. Ent. (N.S.) 4: 117 (lectotype designation) Dendropaemon nitidicolle : Vaz-de-Mello 2000, Hac. Proy. CYTED: 192 (faunistic)

Dendropaemon subcylindricum : Vaz-de-Mello 2000, Hac. Proy. CYTED: 192 (faunistic) Dendropaemon (D.) nitidicollis: Arnaud 2002 , Col. Monde 28: 15 (mention)

Dendropaemon (D.) subcylindricus: Arnaud 2002 , Col. Monde 28: 15 (mention)

Dendropaemon (D.) nitidicollis : Vaz-de-Mello & Génier 2009, Col. Bull. 63: 365 (biology)

Type locality. Jatahy, Etat de Goyaz.

Diagnosis. The small size combined with the three-segmented meso- and metatarsi with the second segment being subequal in length to the first segment will place the species in the quadratus species complex. The small average size (less than 8.5 mm) combined with the subangular anterior pronotal angles in dorsal view and the only minutely to finely punctate pronotal surface anterior to lateral fossae will separate it from other species in the quadratus complex.

Description. Male lectotype ( Fig. 38 ). Body. Body small, length 8.0 mm, maximum width 4.0 mm; body subrectangular in dorsal view; dorsum slightly convex. Color. Dorsal surface dark brown to black, glossy, with green metallic sheen; head black along anterior edge of clypeus, metallic green on remaining surface; pronotum with green metallic sheen except on small area adjacent to lateral fossae; elytra with uniform green metallic sheen; ventrum reddish brown to dark brown; pygidium with green metallic sheen; legs reddish brown to dark brown. Head. Clypeus broadly arcuate, anterior portion slightly upturned; clypeal teeth ogival; clypeal median emargination broadly u-shaped, clypeal edge emarginate 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 fine blunt transverse rugulae laterally, minutely punctate internally, transversely tumescent; clypeofrontal carina low, more than 6 times wider than high, slightly arcuate in dorsal view, simply carinate, clypeofrontal carina apical edge straight in frontal view; eyes very small in dorsal view, interocular ratio 6.0. Pronotum. Pronotum transverse in dorsal view, pronotal width/length ratio 1.3; disc of pronotum minutely punctate throughout, with a fine longitudinal sulcus on posterior two-third; pronotal anterior margin wider and flat lateral to eyes; anterior portion with a broad and fine tectiform carina tuberculate medially; anterior angles surface with fine blunt longitudinal rugulae, slightly but distinctly sulcate along posterior edge of anterior margin; lateral fossae rounded and bordered anteriorly by a sharp carina; lateral portions unmodified; pronotal basal fossae very small and more or less rounded; posterior margin ill-defined on a short distance on each side of pronotal basal fossae, lacking setae. Elytra. Elytra approximately as long as wide in dorsal view, elytral combined width/length ratio 1.0; elytral base lacking distinct margin, simply convex; elytral striae 1–4 very wide basally and tapering toward apex, very deeply impressed basally, elytral striae 5 similar to 4 on disc, strial punctures minute basally becoming larger and deeper toward apex, stria 1 weakly impressed apically, going straight to elytral apical margin; interstriae slightly convex, minutely punctate throughout, surface glossy. Thoracic sterna. Proepisternal carina reduced, present along coxal insertion only; metasternal median lobe bluntly angularly produced anteromedially, ventral ridge ill-defined, keel shaped. Legs. Profemur posterior surface slightly but distinctly convex and glabrous internally, posterointernal margin rather thick, evenly developed, 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 bluntly lobate; anterior surface lacking aligned row of setae internally, surface glossy or feebly microsculptured; posterior surface lacking punctures externally to median carina, surface finely and irregularly microsculptured, 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 finely crenulate, 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 internal edge nearly straight and lateral edge arcuate, lacking distinct depressed area anterointernally before apex, apicoposterior edge unmodified, anterior surface with a well-defined sulcus on apical half. Metatibia moderately slender, slightly widening toward apex in anterior view, anterior surface with distinct row of setae, surface with ill-defined irregular microsculpture, metatibial posterior surface flat between longitudinal row of setae and lateral edge, with transverse microsculpture. Metatarsus 3-segmented ( Fig. 131 ), 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 slightly convex; sternites 4–6 with 1–3 unaligned rows of setae laterally, glabrous medially; sternite 7 deeply longitudinally concave medially, subequal in length to segment 6 along midline; pygidium minutely punctate on disc. Male genitalia (Figs. 102–103). Parameres produced onto a lobe laterally; surface smooth, glossy apically.

Measurements (6 males, 2 females). Length: male 6.0–8.0 (6.9±0.7), female 7.5–8.5 (8.0±0.7) mm.

Primary type data.

Dendropaemon nitidicollis Olsoufieff ( Fig. 152 ). Lectotype male (MNHN); [Jatahy/ Etat de Goyaz/ Ch.Pujol 1895–96]; Museum Paris/ ex Coll./ R.Oberthur] green card; [Dendr. Nitidicollis sp. n./ det. G. Olsoufieff] partly handwritten; [WORLD/ SCARAB./ DATABASE/ WSD00016822]; [ Dendropaemon / nitidicollis Ols. / LECTOTYPE / P.ARNAUD DET 1982] partly handwritten, red border; [ Dendropaemon ♂/ nitidicollis / Olsoufieff, 1924 / vid. Génier & Arnaud, 2009].

Dendropaemon subcylindricus Blut. Lectotype male (MTD) present designation: [GOYAS/ Rio verde]; [♂]; [Coll. C. Felsche/ Kauf 20, 1918] green card; [Typus] red card; [ Dendropaemon ♂/ subcylindricus / Blut/ Rio Verde, Goyaz] handwritten, black border; [WORLD/ SCARAB./ DATABASE/ WSD00016826]; [LECTOTYPE / Dendropaemon / subcylindricus / Blut, 1939 / dés.: Génier & Arnaud, 2014] red card; [ Dendropaemon ♂/ nitidicollis / Olsoufieff, 1924 / dét. Génier & Arnaud,2009].

Material examined. BRAZIL: GOIÁS, Rio Verde, (17°47'50''S, 50°54'0''W), [no date], coll. [anonymous]— 1 female, 1 male (lectotype, paralectotype) ( MTD); Bom Jardim de Goiás, (16°12'10''S, 52°10'32''W), ii.1998, coll. Vaz-de-Mello— 1 male ( CEMT); Jataí, (17°53'S, 51°43'W), [no date], coll. [anonymous]— 1 female, 2 males (incl. 2 paralectotypes) ( MNHN); same locality, 1895–96, coll. Ch. Pujol— 1 female, 2 males (incl. lectotype) ( MNHN); same locality, 1898, coll. Ch. Pujol— 1 male ( MNHN); Mineiros, (17°34'43''S, 52°32'32''W), [no date], coll. [anonymous]— 1 male (paralectotype) ( MNHN); Rio Verde, (17°47'50''S, 50°54'0''W), [no date], coll. [anonymous]— 1 male ( CPFA).

Natural history. Unknown.

Remarks. Females differ in having sternite 7 only slightly concave in lateral view.

Variation, as usual, occurs in the extent of the metallic marking on head and pronotum. The greenish tinge is rather uniform in the sample studied, so is the degree of coarseness and density of punctures.

Nomenclature and taxonomy. D. subcylindricus Blut, 1939 = D. nitidicollis Olsoufieff, 1924 , new synonymy. The lectotype of D. subcylindricus Blut was compared to the lectotype of D. nitidicollis Olsoufieff and no external or genitalic differences that could support their placement in two different species was observed.

Figures

FIGURES 37 – 41. Dorsal habitus. 37. D. latistriatus, male holotype; 38. D. nitidicollis, male lectotype; 39. D. quadratus, male neotype; 40. D. similis, male holotype; 41. D. denticollis, female holotype.

FIGURES 126 – 133. Metatarsus, ventral view. 126. D. ganglbaueri, holotype; 127. D. vazdemelloi, holotype; 128. D. refulgens, holotype; 129. D. fractipes; 130. D. fasces; 131. D. nitidicollis; 132. D. quadratus; 133. D. denticollis.

FIGURES 134 – 154. Primary type labels. 134. D. hirticollis; 135. D. pauliani; 136. D. renatii; 137. D. ater; 138. D. piceus; 139: D. telephus; 140. D. viridis; 141. D. viridipennis. 142. D. convexus; 143. D. fredericki; 144. D. angustipennis; 145. D. bahianus; 146. D. amyntas (= D. attalus); 147. D. ganglbaueri; 148. D. refulgens; 149. D. fractipes; 150. D. fasces; 151. D. haroldi; 152. D. nitidicollis; 153. D. quadratus; 154. D. similis; 155. D. denticollis.