Dendropaemon (Coprophanaeoides) compressipennis 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) : 11-12

3. Dendropaemon (Coprophanaeoides) compressipennis Génier & Arnaud , new species

( Figs. 3 , 44–45, 156)

Type locality. Três Lagoas, Mato Grosso do Sul, Brasil.

Diagnosis. The acutely notched external side of each clypeal tooth will place this species in Coprophanaeoides . Within Coprophanaeoides , the lack of basal elytral margin will separate it from all other species except its sister species D. hirticollis from which it differs in having a much more dorsoventrally compressed body and in possessing a well-defined metasternal v-shaped ridge.

Description. Male holotype ( Fig. 3 ). Body. Body moderately large, length 11.5 mm, maximum width 6.5 mm; body subrectangular in dorsal view; dorsum largely flat. Color. Dorsal surface black, glossy, with green metallic sheen; head black along anterior edge of clypeus, metallic green on remaining surface; pronotum with green metallic sheen; elytra with uniform green metallic sheen; ventrum with faint greenish metallic sheen; pygidium with green metallic sheen; legs with green metallic sheen. Head. Clypeus broadly arcuate laterally, straight on a short distance laterally to clypeal teeth, anterior portion upturned; clypeal teeth acutely triangular; 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; clypeogenal suture well-defined, bluntly carinate internally; genal surface with small 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 straight in frontal view; eyes moderately large in dorsal view, interocular ratio 3.5. Pronotum. Pronotum transverse in dorsal view, pronotal width/length ratio 1.7; disc of pronotum minutely punctate basally with some scattered large setiferous puncture medially, with dense squamose punctation anteriorly, with an ill-defined shallow longitudinal depression on posterior half; pronotal anterior margin unmodified lateral to eye; anterior portion with a fine straight carina; anterior angles surface finely granulate, similar to lateral margin along posterior edge of anterior margin; lateral fossae oval, simple; lateral portions strongly explanate; pronotal basal fossae ill-defined, slightly concave; posterior margin well-defined laterally, crenulate, with few long setae. Elytra. Elytra approximately as long as wide in dorsal view, elytral combined width/length ratio 1.1; 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 minute, adjacent strial edge encroaching on interval, stria 1 weakly impressed apically, going straight to elytral apical margin; interstriae flat, minutely punctate and with few larger setiferous punctures along striae, surface glossy. Thoracic sterna. Proepisternal carina absent; metasternal median lobe bluntly angularly produced anteromedially, ventral ridge well-defined, v-shaped. Legs. Profemur posterior surface flat 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 bluntly lobate; anterior surface with long aligned row of setae internally, surface glossy or feebly microsculptured between punctures; posterior surface with some ill-defined 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, 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, lacking distinct depressed area anterointernally before apex, apicoposterior edge unmodified, anterior surface with a well-defined sulcus on more than half the length. 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 illdefined microsculpture. Metatarsus 3-segmented, 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, with 1–3 unaligned rows of setae medially; sternite 7 approximately longitudinally flat medially, subequal in length to segment 6 along midline; pygidium minutely punctate on disc. Male genitalia (Figs. 44–45). Parameres simply rounded apically in dorsal view; surface smooth, glossy apically.

Measurements (2 males, 2 females). Length: male 11.5–13.0 (12.3±1.1), female 13.5–14.0 (13.8±0.4) mm.

Primary type data. Holotype male (MEFEIS): [12/XI/1993 / BR-MS-Três Laogas (sic)/ International Paper/ Horto Rio Verde/ black light flight intercept trap/ cerrado stand/ Flechtmann, C.A.H. col]; [C 1177/ 12/10 /93/ vlc] handwritten; [WORLD/ SCARAB./ DATABASE/ WSD0017505]; [HOLOTYPE / Dendropaemon / compressipennis n.sp. / Génier & Arnaud, 2014] red card.

Material examined. BRAZIL: GOIÁS, Parque Nacional das Emas [1], Mineiros, elev. 852 m (17°54'45''S, 52°59'20''W), 15.iii.2011, coll. M.F. Souza— 1 male (paratype) ( CEMT); Parque Nacional das Emas [2], Mineiros, elev. 852 m (18°4'11.5''S, 52°55'17''W), 15.iii.2011, coll. M.F. Souza— 1 female (paratype) ( CEMT); Rio Verde, elev. 400 m (17°47'34''S, 50°55'11''W), xii.1970, coll. Humelgen— 1 female (paratype) ( CPFA); MATO GROSSO DO SUL, Horto Barra do Moeda, International Paper, Três Lagoas, (21°0'S, 51°47'W), 14.xii.1993, coll. C.A.H. Flechtmann— 1 female allotype (MEFEIS); Horto Barra do Moeda, Três Lagoas Agroflorestal, Três Lagoas, (21°0'S, 51°47'W), 26.x.1993, coll. C.A.H. Flechtmann— 1 female (paratype) ( CEMT); Horto Rio Verde, International Paper, Três Lagoas, (20°55'21''S, 52°8'21''W), 12.xi.1993, coll. C.A.H. Flechtmann— 1 male (holotype) (MEFEIS).

Etymology. An adjective referring to the extremely flat dorsum of this species.

Natural history. Two specimens were collected using a black light trap set either in a cerrado- Eucalyptus ecotone or in cerrado stand.

Remarks. Females differs in having a slightly wider anterior pronotal carina and by their medially glabrous sternites 1–4. Variation, little aside the extent of green metallic sheen and number of fine setiferous punctures on pronotum. The female specimen from Goiás (P.N. Emas) present a larger flat pronotal surface and the anterior pronotal carina is wider, set closer to the anterior edge and atrophied medially. However, a male from the same locality collected the same day matches the male holotype suggesting that this variation is best considered intraspecific.

Figures

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.