Renda minor ( Sharp, 1876 )

Márquez, Juan, 2010, Revision of the genus Renda Blackwelder, 1952 (Coleoptera: Staphylinidae: Xantholinini) 2686, Zootaxa 2686 (1), pp. 1-61: 41-43

publication ID 10.11646/zootaxa.2686.1.1

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Renda minor ( Sharp, 1876 )


Renda minor ( Sharp, 1876)  

Fig. 7

Sterculia minor Sharp, 1876: 191   ; Sharp, 1885: 471 ( Plochionocerus   ); Herman, 2001 ( Renda   ).

Plochionocerus dalmasi Fauvel, 1901: 84   ; Bernhauer and Schubert, 1914: 315 ( Plochionocerus   ); Herman, 2001: 3748 ( Renda   ), syn. nov.

Type material. Lectotype of Sterculia minor   (here designated, sex undetermined): “Type / Amazon Fonteboa / S. America: Brazil / Sharp Coll. 1905-313/ Sterculia minor   Type D. S. / Syntype ” ( BMNH)   . Paralectotype: “Ega / S. America: Brazil / Sterculia minor   var. D. S. Amazons / Sharp coll. 1905-313 / Syntype ” ( BMNH). Type material of Plochionocerus dalmasi Fauvel   not located, not found in Institut Royal des Sciences Naturalles , Brussels, Belgium   (holotype described from “ Colombie ”)   .

Additional material (24 specimens). “ BOLIVIA: Cochabamba, Cochabamba, 67.5 km NE, Est. Biol. Valle del Sajita, Univ. De San Simón , 300 m, 17°6´33”S, 64°47´52”W, 9–13 Feb 1999; F. Genier, BOL1G99 069; Ex: flight intercept trap ” (2♀, SEMC) GoogleMaps   . Same data, except: “ 7–9 Feb 1999, 041” (1♀, SEMC)   . “ BRAZIL, Goias: Jataí , Nov. 1972, F. M. Oliveira ” (2♀, AMNH)   . “ S. Paulo, Ypiranga , Dr. Ihering / minor Shp.   det. Bernh. ” (1?, FMNH)   . “ COLOMBIA: Cali, Fassl / dalmasi Fauv.   det. Bernh. ” (1♂, FMNH)   . “ ECUADOR: Zamora-Chinchipe, Rio Bombuscaro. 4°7´0”S, 78°59´0”W. 26 Jun–4 Jul 1996. ECU1H96 oo1; P. Hibbs. Ex: flight intercept trap ” (2♂, SEMC). “ GoogleMaps   Ecuador: Sucumbios, Sacha Lodge , 0.5°S, 76.5°W, 270 m, 4–14-III-1994, Hibbs, ex: Malaise ” (1♀, SEMC) GoogleMaps   . Same data, except: “ 1–31 XII-1994 ” (1♀, SEMC)   . Same data, except: “ 3–13 VII-1994 ” (1♂, SEMC)   . “ FRENCH GUIANA: Wanaboo (near Nason), Marowijne River , 40 m, 4°33´35”N, 54°26´36”W, 31 May–5 Jun 1999; Z. H. Falin, B. DeDijn SUR1F99 032, ex: flight intercept trap ” (1♀, SEMC). “ GoogleMaps   PARAGUAY: Cazaapá Hermosa, Prop. López family, San Rafael Reserve , bank Rio Rebicuary , 80 m, 26°17´23”S, 55°43´7”W, 1–4 Dec 2000; Z. H. Falin, PAR1F00 107; ex: flight intercept trap ” (1♂, 1♀, SEMC). “ GoogleMaps   PERU: Loreto Prov., Iquitos , 90 m, 5 May 1992, J. Danoff-Berg, ex: flight intercept trap ” (1♀, SEMC). “   Peru: Madre de Dios, Pantiacolla Lodge, 5,5 km W El Mirador Trail , Alto Madre de Dios River , 500 m 12°39´10”S, 71°15´28”W 23–26 Oct 2000; R. Brooks. PERU1B00 100, ex: flight intercept trap ” (1♀, SEMC). “ GoogleMaps   Peru: Madre de Dios, Cocha Casu Bio. Stn. Manu National park , 350 m. 11°53´45”S, 71°24´24”W. 17–19 Oct 2000; R. Brooks, PERU1B00 042; ex: flight intercept trap ” (1♀, SEMC) GoogleMaps   . “ Madre de Dios Dept., Manu Prov., Parque Nac. Manu , Zona Res , Rio Manu , Cocha Juarez , trail nr. Manu / Lodge , 18–24-IX-1992, flight intercept trap, A. Hartman ” (1♂, 1♀, FMNH) GoogleMaps   . “ SURINAME: Brocopondo, Brownsberg Nature Preserve, Witi Creek Trail, 340 m, 4°56´55”N, 55°10´53”W, 23–25 Jun 1999; Z. H. Falin, A. Gangadin, H. Hiwat, SUR1F99 115, ex: flight intercept trap ” (1♂, 3♀, SEMC) GoogleMaps   .

Redescription. Total length 11.3–12.8 mm. Body black, with antennomeres 4–11, labrum, palpi, tarsi, posterior 2/3 of penultimate visible abdominal segment and last visible abdominal segment reddish brown.

Head. Ovally quadrate (similar to Fig. 19); 1.21x as long as wide; dorsally and ventrally slightly convex; dorsal surface with very dense umbilicate punctures, ventral surface with dense umbilicate punctures separated by 1–2x their width ( Fig. 24); temple convex ( Fig. 27); eyes 0.3x as long as head, interocular distance 0.67x cephalic width (at eye level); first antennomere 1.88x as long as antennomeres 2–3 combined, apical antennomere as long as antennomeres 9–10 combined; labrum slightly bilobed ( Fig. 54); with mandibular external channel; apical maxillary palpomere conical ( Fig. 40), as long as preapical palpomere; apical labial palpomere asymmetrically conical ( Fig. 45), longer than preapical palpomere.

Thorax. Pronotum 1.41x as long as wide; 1.07x as wide as head; with dense fine punctures, except for wide longitudinal impunctate area ( Fig. 52); with depressed area poorly developed at each side of posterior third. Elytra as long as pronotum; with dense fine setae as on pronotum. Prosternum transverse, with setae sparser than on meso and metasternum.

Abdomen. Densely covered with long, pale setae.

Aedeagus. Elongate; total length 1.4 mm; parameres 0.34x as long as median lobe; apical area of median lobe 0.29x as long as total length of median lobe; internal sac with weakly sclerotized structures ( Fig. 82).

Variation. Two specimens have antennomeres 4–11, mouthparts, tarsi and two last visible abdominal segments brown, almost black. Some specimens have the apex of the last antennomere yellow. Depressed areas at each side of posterior third of pronotum are slightly visible to inconspicuous.

Comparison. This species can be confused with R. longiceps   , R. nitida   , R. mesoamericana   , R. lescheni   and R. brasiliana   due to the similar shape of the apical maxillary and labial palpomeres and the punctures of the pronotum. It is distinguished from R. longiceps   and R. nitida   by an ovally quadrate head (length/width proportion: 1.17–1.25), while in the latter two species the head is ovally elongate (length/width proportion: 1.26–1.50). It can be separated from R. mesoamericana   by the temple of head convex and by its oval aedeagus with a widened base of the median lobe. It is separated from R. lescheni   and R. brasiliana   by the slightly convex ventral surface of head and denser umbilicate punctures on this area (the latter two species have clearly convex ventral surface of the head and sparser umbilicate punctures).

Remarks. In spite of the fact that it was impossible to locate the holotype of R. dalmasi   , I propose this species as a junior synonym of R. minor   based on the following considerations. Of all previously studied specimens of any species from Colombia, only one was identified by Bernhauer as R. dalmasi   and this specimen corresponds morphologically to R. minor   . In the original description of R. dalmasi   , the characteristics given by Fauvel (1901) are not very useful for the identification at the species level, but some of them, such as head almost flat and quadrate, dense umbilicate punctures on the ventral surface of the head, fine punctuation of the pronotum, similar length of head and pronotum and the total length (11 mm), completely correspond with R. minor   . Additionally, the same author ( Fauvel, 1901) indicates that R. dalmasi   is similar to “ Pl. minor Shp.   , from Amazonas”. Finally, seven species are recorded in this work from Colombia and two of them could be excluded from this taxonomic problem because their head and pronotum have dense umbilicate punctures ( R. flagellicornis   and R. formicaria   ). One of the remaining four species is proposed here as a new species ( R. fimetariamimus   ), that has an oval, posteriorly narrowed head, temple with temporal carinae and a concave area, characteristics that were not included in the original descriptions of R. dalmasi   and R. minor   . Renda fimetaria   can also be excluded as it has a very characteristic head with large eyes, and it is difficult to confuse this species with any other. Renda clavicornis   has a convex head, with superior and inferior temporal carinae and a concave area, characters that were not observed in the study of R. minor   . The remaining species are R. dalmasi   and R. minor   , which are proposed here as synonyms.

Considering the present proposed synonymy and the probable confusion of R. minor   with other similar species, a lectotype for this species was designated from one of the two examined specimens which have the same label data as those indicated in the original description ( Sharp, 1876).

Geographic distribution. Previously recorded from Brazil ( R. minor   ) and Colombia ( R. dalmasi   ) ( Herman, 2001). It is recorded here for the first time from Bolivia, Ecuador, French Guiana, Paraguay, Peru and Surinam.


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Renda minor ( Sharp, 1876 )

Márquez, Juan 2010

Plochionocerus dalmasi

Herman, L. 2001: 3748
Bernhauer, M. & Schubert, K. 1914: 315
Fauvel, A. 1901: 84

Sterculia minor

Sharp, D. 1885: 471
Sharp, D. 1876: 191