Dendropaemon (Onthoecus) attalus Génier & Arnaud

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) : 57-59

28. Dendropaemon (Onthoecus) attalus Génier & Arnaud , nomen novum

( Figs. 28 , 86–87, 123, 159)

Dendropemon Amyntas Harold 1868 , Col. Hefte 4: 83 (original description)

Dendropemon Amyntas : Harold 1869, Cat. Col. IV: 1020 (catalogue)

Dendropemon Amyntas : Gillet 1911, Col. Cat. 38: 88 (catalogue)

Dendropaemon amynthas: Olsoufieff 1924 , Insecta 13: 122 (monograph)

Dendropaemon amynthas amynthas: Blut 1939 , Arch. Naturg. (N.F.) 8: 267 (monograph) Dendropemon amyntas: Blackwelder 1944 , U.S. Nat . Mus. Bull. 185: 210 (checklist) Dendropaemon (D.) amyntas: Edmonds 1972 , Univ. Kansas Sc. Bull. 49: 850 (comment taxonomy) Dendropaemon amyntas: Arnaud 1982 , Rev. Fr. Ent. (N.S.) 4: 115 (lectotype designation) Dendropaemon amyntas amyntas : Vaz-de-Mello 2000, Hac. Proy. CYTED: 192 (faunistic) Dendropaemon (D.) amyntas: Philips et al. 2004 , Insect Syst. Evol. 35: 51 (phylogeny)

Type locality. Cayennae.

Diagnosis. The large size, rather thick body combined with the dorsum dark metallic blue sheen will separate D. attalus from all other species. It can be separated from its sister species, D. amyntas , by the shape of the clypeal teeth.

Description. Undamaged female specimen matching abraded male lectotype ( Fig. 28 ). Body. Body large, length 22.0 mm, maximum width 12.0 mm; body subrectangular; dorsum narrowly flat. Color. Dorsal surface black, glossy, with metallic sheen; head with greenish to coppery metallic sheen adjacent to the eyes; pronotum with faint bluish metallic sheen along the border; elytra with uniform blue metallic sheen; ventrum dark brown to black; pygidium with greenish metallic sheen; legs black. Head. Clypeus broadly arcuate, anterior portion upturned; clypeal teeth triangular; clypeal median emargination broadly v-shaped, clypeal edge lacking emargination on external side of each clypeal tooth, clypeal teeth ventral surface with a fine v-shaped carina, clypeal margin well-defined and sharply carinate posteriorly, clypeal surface with transverse blunt rugulae; clypeogenal suture well-defined, bluntly carinate internally; genal surface with small and coarse rugulae anteriorly and simply punctate posteriorly, transversely tumescent; clypeofrontal carina low, more than 6 times wider than high, slightly arcuate in dorsal view, simply carinate, clypeofrontal carina apical edge obtusely angular medially in frontal view; eyes small in dorsal view, interocular ratio 5.8. Pronotum. Pronotum transverse in dorsal view, pronotal width/length ratio 1.6; disc of pronotum finely punctate basally, punctures changing into fine rough rugulae anteriorly, with an ill-defined shallow longitudinal depression on posterior half; pronotal anterior margin slightly wider and concave lateral to eye; anterior portion with a tri-sinuous carina; anterior angles surface with fine rugulae, similar to lateral margin along posterior edge of anterior margin; lateral fossae simply rounded, concave; lateral portions strongly explanate; pronotal basal fossae well-defined, concave; posterior margin well-defined, lacking crenulation and setae. Elytra. Elytra approximately as long as wide in dorsal view, elytral combined width/ length ratio 1.2; elytral base lacking distinct margin, simply convex; elytral striae 1–4 fine and well-defined, evenly impressed throughout, elytral striae 5 similar to 4 on disc, strial punctures fine, not encroaching on interval, stria 1 well-defined apically, connecting to marginal stria; interstriae slightly convex, minutely punctate throughout, surface glossy. Thoracic sterna. Proepisternal carina complete, extending laterally; metasternal median lobe angularly produced anteromedially, ventral ridge well-defined, v-shaped. Legs. Profemur posterior surface convex, glabrous and punctate internally, posterointernal margin rather thick, evenly developed, internal edge rather wide, with a brush of long setae along anterointernal edge, remaining surface irregularly punctate. Protibia with four teeth on lateral edge; internal basal angle bluntly lobate; anterior surface with long aligned row of setae internally, surface glossy or feebly microsculptured between punctures; posterior surface with coarse irregular punctures externally to median carina, surface between punctures finely and irregularly microsculptured, with a single interrupted setal row along lateral teeth. Mesofemur unmodified on anterointernal edge apically. Mesotibia rather slender, gradually widening toward apex in anterior view; anteroapical edge straight in anterior view, anteroapical row of setae incomplete, irregular; apicoanterior edge obliquely truncated internally; external edge rounded basally, more or less flat apically, surface with irregular punctures and microsculpture. 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 mostly parallel in ventral view, more than twice as long as wide, depressed anterointernally before apex, apicoposterior edge lobate beyond tibial insertion, surface coarsely microsculptured, anterior surface with a row of irregular punctures, punctures not bordered anteriorly by a sharp and well-define sulcus. Metatibia robust, short, slightly widening toward apex in anterior view, anterior surface completely covered with irregular sculpturing and punctures, metatibial posterior surface concave between longitudinal row of setae and lateral edge, surface dull and irregularly punctate. Metatarsus 3-segmented ( Fig. 123 ), 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 more than three unaligned row of setae laterally, glabrous medially; sternite 7 approximately longitudinally flat medially, shorter than segment 6 along midline; pygidium with mixed minute and fine punctures on disc.

Measurements (10 males, 24 females). Length: male 16.0–20.0 (18.7±1.3), female 16.0–22.5 (19.5±1.5) mm.

Primary type data ( Fig. 146 ). Lectotype female (MNHN): [Cayenae/ D./ Amyntas / t. Harold] handwritten, red border; [Ex-Musaeo/ E.Harold]; [ Dendropaemon amyntas Har / det. G. OLSOUFIEFF] partly handwritten; [Museum Paris/ ex Coll./ R.Oberthur] green card; [WORLD/ SCARAB./ DATABASE/ WSD00016598]; [ Dendropaemon / amyntas Har / LECTOTYPE / P.ARNAUD DET 1982] partly handwritten, red border; [ Dendropaemon ♀/ attalus / Génier & Arnaud/ dét. Génier & Arnaud,2012].

Material examined. BRAZIL: [unspecified locality], [no date], coll. [anonymous]— 1 female, 1 male ( BMNH, CPFA); AMAZONAS, Municipio Barcelos, Pico Tamacuari, 2700m NW Missão Marari, elev. 340 m (1°12'26.4''N, 64°47'18.1''W), 29.iv.–10.v.2004, coll. U. Caramaschi— 1 male ( CEMT); Rio Parauary, (4°36'S, 57°47'W), 15.iii.1937, coll. Zellibor-Hauff— 1 female ( CMNC); MATO GROSSO, Fazenda Paraíso, Municipio Tangara da Serra, elev. 500 m (14°40'2''S, 57°23'9''W), 27.xi.–4.xii.2008, coll. L.R. Silva— 1 female ( CEMT); PARÁ, [unspecified locality], [no date], coll. S. Sieber— 1 female ( ZMHB); RONDÔNIA, Barragem de Samuel, Candeias do Jamari, (8°46'S, 63°28'W), iv.89, coll. Dégallier— 1 female ( CPFA); Fazenda estrela de Davi, Guajará-Mirim, elev. 165 m (10°44'35.1''S, 65°17'58.57''W), 18.ii.2010, coll. F. Coletti— 1 female ( CEMT); GUYANA: [unspecified locality], [no date], coll. [anonymous]— 1 female ( MNHN); CUYUNI-MAZARUNI, Kartabo, (6°16'57''N, 58°35'8''W), 23.vi.1925, coll. [anonymous]— 1 female ( CMNC); GUYANE FRANÇAISE: Cacao, (4°35'N, 52°28'W), iii.2007, coll. [anonymous]— 2 females ( CPFA); Cayenne, (4°54'3''N, 52°18'12''W), [no date], coll. [anonymous]— 5 females (incl. holotype) ( CPFA, IRSNB, MNHN); Crique Blanche, R.N. 2, (4°33'39''N, 52°23'50''W), ii.2009, coll. Giuglaris— 2 females ( CPFA); environs de Cacao, (4°35'N, 52°28'W), iii.2007, coll. E. Degrad & P. Bonin— 1 female, 1 male ( CPFA); Paramaca (Kourou), (5°8'54''N, 52°40'51''W), [no date], coll. [anonymous]— 2 females, 2 males ( MTD); PK 125, Route N2 (Cayenne-Saint-Georges-de-L’Oyapock), (4°13'21''N, 52°7'15''W), 6.iii.2008, coll. J.L. Giuglaris— 1 female ( CPFA); same locality, 20.vii.2008, coll. J.L. Giuglaris— 1 female ( CPFA); PK 5, Piste KM 25, Route Régina-Saint-Georges, (4°6'54''N, 52°7'16''W), vii.2008, coll. J.L. Giuglaris— 1 female ( ATHC); same locality, ix.2008, coll. J.L. Giuglaris— 1 male ( ATHC); Réserve naturelle des Nouragues, (4°19'N, 52°22'W), 2.vii.2008, coll. F. Feer— 1 male ( MNHNB); Savane Matiti, (5°5'N, 52°37'W), i.2011, coll. [anonymous]— 1 female, 1 male ( CPFA); same locality, ix.2009, coll. J.L. Giuglaris— 1 female ( PMOC); [NO DATA]: -., coll. [anonymous]— 3 males ( CPFA, IRSNB).

Natural history. Some specimens were collected with flight interception traps.

Remarks. Meso and hyperthelic males have the clypeofrontal carina trapezoidal in front view, the pronotal anterior declivity has a concave impression on each side of mid line and the anterior transverse carina projecting forward and emarginate medially in dorsal view. Parameres (Figs. 86–87) feebly dented in dorsal view, lacking distinct raspy tubercles apically. Variation. Little except for size and a single specimen from the state of Rondônia with green metallic sheen.

Nomenclature and taxonomy. Dendropaemon attalus Génier & Arnaud, 2014 nomen novum for Dendrop[a]emon amyntas Harold, 1868 primary junior homonym.

A replacement name is necessary for D. amyntas Harold, 1868 because of the previous description of D. amyntas Lacordaire, 1856 , which represents a different taxon.

Figures

FIGURES 25 – 30. Dorsal habitus. 25. D. inemarginatus, female holotype; 26. D. nigritulus, male holotype; 27. D. amyntas, male; 28. D. attalus, male holotype; 29. D. lydiae, male holotype; 30. D. morettoi, male holotype.

FIGURES 118 – 125. Metatarsus, ventral view. 118. D. fredericki, holotype; 119. D. angustipennis; 120. D. bahianus; 121. D. nigritulus, paratype; 122. D. amyntas; 123. D. attalus; 124. D. lydiae, paratype; 125. D. morettoi, paratype.

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.