Centris (Melacentris) atriventris Mocsáry, 1896 nom. rev.

(Figures 1, 2, 5, 6, 9, 11, 13, 15, 25)

Centris atriventris Mocsáry, 1896: 7 .

Diagnosis. Female: Mesoscutum, mesoscutellum and anterior surface of tegula with orange hairs with dark orange tips. Mandible with four teeth (1st>3rd>4th>2nd): first and second with acute apex, third rounded and fourth truncate. Basitibial plates elliptical, posterior margin of secondary plate projected backwards (Fig. 9). Male: Clypeus with two brown spots on upper half (Fig. 2). Dorsal surface of mesosoma and tegula with orange hairs with dark orange tips (Fig. 6). Metepisternum and propodeum with light brown pubescence. Base of hind claw with tuft of branched hairs on each side (Fig. 15). Mandible with three teeth (3rd>1st>2nd) of acute apex, except third concave. This species is most similar to C. furcata . Females of both species differ by the width of their mandibular teeth (1st>3rd>4th>2nd in C. atriventris, 1st>2nd>4th>3rd in C. furcata, Fig. 3), by the coloration of their clypeus (orange brown in C. atriventris, dark brown in C. furcata) and by the shape of their secondary basitibial plate (projected backwards in C. atriventris, Fig. 9; not projected backwards in C. furcata, Fig. 10). Males differ mainly by the size of their second and third mandibular teeth (3rd>2nd in C. atriventris, Fig. 13; 2nd>3rd in C. furcata Fig. 14) and by the tuft of branched hairs at the base of the hind pretarsal claws (present in C. atriventris, Fig. 15; absent in C. furcata, Fig. 16).

Female (Figs. 1, 5, 9, 11). Description: Measurements: Approximate body length: 26.0; head width: 7.7; thorax width: 9.7; forewing length: 19.0; UID: 3.3; LID: 3.8; mandible length: 3.6; mandible basal width: 1.8; F1 length: 1.9; F2 length: 0.4; F3 length: 0.5. Coloration: Orange brown, except frons reddish brown (Fig. 1). Upper paraocular area and mesoscutum dark brown (Fig. 1). Vertex dark brown to black (Fig. 1). Lower paraocular area and tegula yellowish brown (Figs. 1, 5). Metasoma dark brown (Fig. 5). Wing membrane and veins dark brown (Fig. 5) with violaceous iridescence. Sculpture: Clypeus finely areolate, less evident on disc, with thick and dense punctures on laterosuperior margin, finer towards lower edge (di<ds). Labrum with coarse, not very dense and uniform punctures (di<ds), with well-defined areolate and impunctate surface on upper margin. T1 with fine and dense punctures (di<ds). T2 and T3 with similar punctures of T1 but denser (di≈ds). T4–T6 with slightly coarser and scattered punctures (di>ds). Pubescence: Head with dark brown to black hairs (Fig. 1). Labrum with mostly simple, downwardly directed hairs (Fig. 1). Surface below wings and legs mostly with dark brown pilosity, except middle femur with light brown hairs (Fig. 5). Pronotum and propodeum with brown yellowish pilosity. Mesepisternum with orange brown hairs laterally, brown ventrally. T1 with dark brown plumose hairs (Fig. 5). T2 and T3 with very dense pubescence (Fig. 5). T4 and T5 with similar pilosity to preceding terga, with some simple hairs intermixed. Prepygidial and pygidial fimbriae with dark brown hairs (Fig. 11). Structures: Flabellum elliptical with slightly narrow anterior margin. Mandible strongly curved apically (Fig. 1). Acetabular carina reaching the base of third tooth. Trimal angle well-developed, acute. Maxillary palpus with four palpomeres (2nd>3rd>1st≈4th). Clypeus uniformly convex (lateral view). Labrum relatively triangular. Vertex above upper interocular tangent (Fig. 1). Inner orbits of compound eyes slightly converging upwards (Fig. 1). Fore elaiospathe with anterior secondary comb formed by five giant apically curved hairs. Mesoscutellum with two not well-developed protuberances. Axilla raised and glabrous. Primary pygidial plate with truncate apex (Fig. 11); secondary plate well-developed, with acute apex (Fig. 11). Pretarsal claws with preapical tooth, except on hind leg.

Male (Figs. 2, 6, 13, 15). Description: Measurements: Approximate body length: 27.0; head width: 7.3; thorax width: 9.3; forewing length: 18.8; UID: 2.5; LID: 3.0; mandible length: 3.2; mandible basal width: 1.5; F1 length: 0.9; F2 length: 0.4; F3 length: 0.5. Coloration: Frons, vertex, mandible, mesosoma, legs, and metasoma dark brown to black (Figs. 2, 6, 13). Lower paraocular area, clypeus, labrum and anterior surface of scape yellow (Figs. 2, 13). Tegula yellowish brown (Fig. 6). Wing membrane and veins dark brown (Fig. 6) with green/violet iridescence. Sculpture: Clypeus conspicuously areolate with relatively fine and dense punctation, slightly coarser laterally (di<ds). Labrum with relatively thin, dense and uniform punctation (di>ds), with well-defined smooth basal surface margin. T1 with fine and relatively dense punctures (di≈ds). T2 and T3 with finer and denser punctation than on T1 (di>ds). T4–T6 with slightly coarse and dense punctures (di>ds). Pubescence: Head, legs and metasoma with dark brown to black hairs (Fig. 6). Coxae and trochanters with yellowish brown pubescence. Mesepisternum mainly with yellow pilosity, slightly darker under wings (Fig. 6). Pronotal lobe with yellowish hairs with orange tips (Fig. 6). T1‒T3 with dense pilosity. T4–T6 with branched hairs. Ventral surface of mid tarsi of hind leg with yellow, long, curved hairs. Ventral surface of hind distitarsus with brown hairs not forming a comb. Structures: Flabellum elliptical with slightly narrow anterior margin. Mandible strongly curved apically (Figs. 2, 13). Acetabular carina reaching base of third tooth (Figs. 2, 13). Trimal angle not well-developed, acute (Fig. 13). Maxillary palpus with three palpomeres (2nd≈3rd>1st). Clypeus with upper half slightly convex, lower half slightly concave (lateral view). Labrum relatively triangular (Figs. 2, 13). Vertex above upper interocular tangent (Fig. 2).

Inner orbits of compound eyes converging upwards (Fig. 2). Mesoscutellum with two not well-developed protuberances. Axilla raised and glabrous. Primary pygidial plate with bilobed apex.

Variation. Female clypeus uniformly convex to slightly concave on lower half; mesoscutum and mesoscutellum with hairs slightly yellowish to orange with dark orange tips; sterna with integument dark to light brown. Male with supraclypeal area dark brown to yellow (Fig. 2); mesosoma with light orange or slightly yellowish pubescence.

Type data. Syntypes: three females and one male (HNHM). A syntype female with the following information: “631 159\ Teffé Brasilia” and with an additional yellow square label on it is here designated as lectotype (Fig. 21). According to the accession book at HNHM this specimen was purchased through the insect dealer Otto Staudinger in 1882.

Original type localities. Brazil: Tefé, São Paulo, “Massanary”. Lectotype locality: Brazil: Amazonas: Tefé.

Distribution (Fig. 25). BRAZIL: * AMAPÁ: Rio Piririm, Serra do Navio. AMAZONAS: *Coari, *Estirão do Equador, *Floresta Canutama, *Ipixuna (Rio Gregório), *Itacoatiara (Fazenda Agropecuária Aruanã), *Manaus, *Palmaris, * Paraná do Castanho, *Parque Nacional Jaú (Serigalzinho), *Ramal do Mucuim (Canutama), *Reserva Florestal Adolpho Ducke, *Rio Demení (Jalauaca Barcelos), *Rio Itacocu, *Rio Jaoari, *Rio Javari, *Rio Negro, *Rio Purus, *Santa Isabel do Rio Negro (Tapuruquara), *Tabatinga. Tefé (Mocsáry 1896), *Uaupes. * ESPÍRITO SANTO: Santa Teresa. * MATO GROSSO: Juína, Serra do Roncador. * PARÁ: Belém, Belterra, Cachimbo, Cachoeira do Tronco (Rio Cuminá), Guamá, Mangabeira Mocajusa, Óbidos, Rio Mapuera (Trombetas), Rio Moja, Santarém, Serra dos Carajás, Tucuruí, Vilhena. * RONDÔNIA: Ilha de Maracá (Rio Uraricoera), Pimenta Bueno, Porto Velho. * RORAIMA: Rio Parima. * TOCANTINS: Porto Nacional. * COLOMBIA: AMAZONAS: Leticia, Parque Nacional Natural Amacayacu (Colubé). CAQUETÁ: Parque Nacional Natural Chiribiquete (Solano), Río Orteguaza. META: Soratoma. PUTUMAYO: Puerto Asís (Santa Helena). VAUPÉS: Mitú. * ECUADOR: NAPO. * PERU: AMAZONAS: Río Santiago. LORETO: Allpahuayo Mishana. * SURINAME: SIPALIWINI: Papadron. * VENEZUELA: AMAZONAS.

Material examined. BRAZIL: AMAPÁ: 2 females: Coleção Campos Seabra \ Serra do Navio Terr . Amapá Brasil IX-1957 K. Lenko leg (DZUP). 2 females: Coleção Campos Seabra \ Serra do Navio Terr . Amapá Brasil Out- 1957 K. Lenko leg (DZUP). 1 female: HYMNRJ 000068\ Coleção Campos Seabra\ Serra do Navio Terr . Amapá Brasil IX-1957 K. Lenko leg (MNRJ) . 1 female: S. Navio AP Brasil X-1957 K. Lenko, leg (DZUP) . 1 female: Coleção Campos Seabra \ Rio Pimirim Macapá Ter. Amapá Setembro 1961 R. Damasceno Brasil (DZUP) . AMAZONAS: 1 female: Coleção Campos Seabra \ Estirão do Equador R . Javari Amazonas Brasil 15/ 31.X.1958 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Tapuruquara Amazonas Brasil Outubro 1962 Pe. P. M. Gerusa (DZUP) . 1 female: Coleção Campos Seabra\ Tapuruquara Amazonas-Brasil Novembro 1962 Pe. Pedro Geroza (DZUP). 1 female: Coleção Campos Seabra\ Tapuruquara Amazonas-Brasil Dezembro 1962 Pe. Pedro Geroza (DZUP). 1 female: HYMNRJ 000063\ Coleção Campos Seabra \ Tapuruquara Uaupes Amazonas Brasil X- 1954 A. Aguirre (MNRJ) . 1 female: HYMNRJ 000066\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil XII 1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000074\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil setembro 1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000076\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil setembro 1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000081\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil setembro 1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000082\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil XII.1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000084\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil setembro 1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000086\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil setembro 1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000082\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil XII.1963 P. Guindani (MNRJ) . 1 male: HYMNRJ 000082\ Coleção Campos Seabra \ Tapuruquara Amazonas Brasil XII.1963 P. Guindani (MNRJ) . 1 female: Coleção Campos Seabra \ Tabatinga Amazonas Brasil Dezembro 1958 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Tabatinga Amazonas Brasil Maio 1959 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Tabatinga Amazonas Brasil Outubro 1956 E. Sousa Lima (DZUP) . 3 females: Tapuruquara Uaupes Amazonas Brasil X-1954 A. Aguirre (DZUP) . 1 female: Brazil Estado do Amazonas \\ Rio Purus IV 1904 Fr. J. Huber (DZUP) . 3 females: Coleção Campos Seabra \ Coari Amazonas Brasil 18 Julho 1956 M. Alverenga (DZUP) . 1 female: Brasil Benj. Constant rio Javary alto Amazonas Dirings (DZUP) . 1 female: HYMNRJ 000056\ Rio Javari Amazonas 1959 de 83/60 J. Hidazi col (MNRJ) . 1 female: HYMNRJ 000058\ Rio Javari Amazonas 1959 dz 83/60 J. Hidazi col (MNRJ) . 1 female: HYMNRJ 000059\ Amazonas, Brasil R. Itacocu V.50 JCM Carvalho col (MNRJ) . 1 female: HYMNRJ 000070\ Rio Jaoari Amazonas 1959 J. Hidazi 02/83-60 col (MNRJ) . 1 female: HYMNRJ 000071\ Rio Jaoari Amazonas 1959 J. Hidazi 02/83-60 col (MNRJ) . 1 female: HYMNRJ 000072\ Rio Jaoari Amazonas 1959 J. Hidazi 02/83-60 col (MNRJ) . 1 male: HYMNRJ 000075\ ♂ \ Manáos Rio Negro Amaz. 9.VIII.27 J. F. Zikán \ Centris atriventris Mocs (MNRJ) . 1 female: Manaus-AM Brasil IX 59 C. Elias leg (DZUP) . 1 male: HYMNRJ 000085\ Manaus Am. X.57 L. Portela (MNRJ). 1 male: HYMNRJ 000073\ Amazonas Manaus 18-X-57 Elias e Roppa col (MNRJ) . 1 male: HYMNRJ 000077\ Amazonas Manaus 18-X-57 Elias e Roppa col (MNRJ) . 1 female: HYMNRJ 000055\ Amazonas Manaus 20-IX-56 Elias e Roppa col (MNRJ) . 1 male: HYMNRJ 000080\ Amazonas A. Pacífico 1933 (MNRJ) . 1 female: Brazil: Amazonas near Palmari 21 24-V-2000 S. A. Cameron \ furcata ? det Claus Rasmussen 2005 (CRBC) . 4 males: 10\ Brasil, Amazonas, Manaus, Centro, 09.vi.1994 F. J. Peralta (INPA) . 1 female: 10\ Brasil, Amazonas, Manaus, Centro, 09.vi.1994 F. J. Peralta \ Centris (Melacentris) sp. D. Parizotto det. 2008 (INPA) . 1 male: Brasil-Amazonas Manaus-Centro 05/V/1988 Amorim, M. col\ 107a\ Anthophoridae (INPA) . 1 male: Brasil: Amazonas Manaus W. W. F escritório mortos no chão 16/5/85 \ Centris af. (Ptilotopus) denudans (Lep. 1841) Det. Camargo 1985 \ C. (Melacentris) cfr. dimidiata ♂ (Olivier, 1789) Det. F. A. Silveira, 2013 (INPA) . 1 male: Brasil: Amazonas Manaus W. W. F. escritório morto no chão\ Centris af. (Ptilotopus) denudans \ C. (Melacentris) cfr. dimidiata (Olivier, 1789) ♂ Det. F. A. Silveira, 2013 (INPA) . 1 female: 2836\ 86\ Brasil-AM- Manaus Loge-Pomar 1-V-1968 Col. E.V. da Silva\ C. (Melacentris) cfr. dimidiata (Olivier, 1789) ♀ Det. F.A. Silveira, 2013 (INPA) . 1 female: Manaus-AM 27.VII.1982 Reviver 350\ Centris (Melanocentris) sp. B ♀ det. Snelling’83 (INPA). 1 female: UnB Eva, Merico Manaus, AM Col. V. Py-David V/81 \ C. (Melacentris) cfr. dimidiata (Olivier, 1789) ♀ Det. F.A. Silveira, 2013 (INPA) . 1 female: BR.AM-Manaus Reserva Ducke 13-VIII- 1982 Costa, R.S. col (INPA) . 1 male and 6 females: Brasil. Amazonas Ramal do mucuim Canutama c. ativa\ 08º39’36.5”S 64º21’57.6”W 22-iv / 07-v-2007 L. Pierrot leg. (INPA) . 2 females: Brasil . Amazonas Ramal do mucuim Canutama c. ativa\ 08º39’36.5”S 64º21’57.6”W 22-iv / 07-v-2007 L. Pierrot leg.\ C. (Melacentris) cfr. dimidiata ♂ (Olivier, 1789) Det. F. A. Silveira, 2013 (INPA) . 1 male: Bra. Amazonas, Itacoatiara Faz. Agropecuária Aruanã 58º45’W e 3ºS 20.xii.2006 \ rede entomológica Bertholletia excelsa (Lecythidaceae) (flor) C. F. Santos, Leg. (INPA) . 1 female: Brasil, amazonas, Pq Nac. Jau 12-27.vii.1993 Eq. INPA, Col. manual\ Centris (Melacentris) sp D. Parizotto det. 2008 (INPA) . 1 male: Brasil, AM Pq. Nac. do Jaú Serigalzinho \ 01º50’27”S 61º35’35”W 29 viii- 0 3 ix 2004 M.L. Oliveira leg (INPA) . 1 female: Brasil, AM, Ipixuna, Rio Gregório, Com. Lago grande 07º03’11.7”S - 71º41’40.6”W 15.v.2011. Coleta manual, R. Andreazze, R. F. Silva (INPA). 1 female: Brasil: Amazonas Parana do Castanho 25-VIII-1979 G. Mont Gomery (INPA) . 1 female: Brasil, Amazonas Barcelos, Rio Demení Jalauaca, viii.2008 0º16’15”S, 62º44’49”W \ Coleta manual Terra firme, floresta A. Silva & R. Machado \ C. (Melacentris) cfr. dimidiata (Olivier, 1789) ♀ Det. F.A. Silveira, 2013 (INPA) . 4 females: Brasil, Amazonas Floresta Canutama Terra Firme 0 7 v 2013 -64.5515, -6.5069 Oliveira & Somavilla (INPA) . 1 male: 2285\ Brasil-AM-Manaus Palmaris-R, 50p. 18-IX-1 961 Col. Eduardo (INPA). 1 male: Brasil, AM, Manaus Univ. Amazonas Trilha do Viveiro 28-iii-2002 08:20h\ 03\ Caesalpiniodeae Caesalpinia ferrea Mart Pena, M.R. \ Centris sp. (INPA) . GOIÁS: 1 female: HYMNRJ 000067\ Coleção Campos Seabra \ Porto Nacional Goiás Brasil 1955 R. A. Silva (MNRJ) . MATO GROSSO: 1 female: Deptº Zool UF-Paraná\ Serra do Roncador MT-R.S. Base-Camp Brasil 20/7/1968 Laroca & Azevedo (DZUP) . 1 female: S. Roncador 29/XI/1987 Pe. Moure (DZUP). 1 female: HYMNRJ 000048\ Coleção Campos Seabra \ Brasil Mato Grosso Juína V.1985 O. Roppa e B. Silva (MNRJ) . 1 female: HYMNRJ 000054\ Brasil Mato Grosso Juína IV.1985 O. Roppa e B. Silva (MNRJ) . 1 female: HYMNRJ 000065\ Coleção Campos Seabra \ Brasil Mato Grosso Juína IV. 1985 vO. Roppa e B. Silva (MNRJ) . PA R Á: 1 male: Brasil Pará 30.5.1902 Ducke \ Centris atriventris Mocs. det. Ducke 1913 ♂ \\ D.Z.S.P (DZUP) . 1 female: HYMNRJ 000051\ Obidos II 1955 (MNRJ). 7 females: Coleção Campos Seabra \ Belém Pará Brasil XI-1955 R. Damasceno (DZUP) . 5 females: Coleção Campos Seabra \ Obidos Pará Brasil VI-1959 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Obidos Pará Brasil Junho 1959 F. M. Oliveira (DZUP) . 3 females: Coleção Campos Seabra \ Obidos Pará Brasil Julho 1959 F. M. Oliveira (DZUP) . 15 females: Coleção Campos Seabra \ Obidos Pará Brasil IX-1959 F. M. Oliveira (DZUP) . 2 females: Coleção Campos Seabra \ Obidos Pará Brasil IX-1955 J. Brazilino Junho (DZUP) . 3 females: Coleção Campos Seabra \ Obidos Pará Brasil X-1955 J. Brazilino Julho (DZUP) . 1 female: Coleção Campos Seabra \ Obidos Pará Brasil I-1958 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Obidos Pará Brasil Dezembro 1955 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Obidos Pará Brasil Julho 1955 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Obidos Pará Brasil Jan. / Maio 1959 F. M. Oliveira (DZUP) . 1 female: HYMNRJ 000049\ Coleção Campos Seabra \ Obidos Pará Brasil I.1958 F. M. Oliveira (MNRJ) . 1 female: HYMNRJ 000053\ Coleção Campos Seabra \ Obidos Pará Brasil julho 1959 F. M. Oliveira (MNRJ) . 1 female: HYMNRJ 000057\ Coleção Campos Seabra \ Obidos Pará Brasil VI-1959 F. M. Oliveira (MNRJ) . 1 female: HYMNRJ 000050\ S. dos Carajás PA V. 1986 O. Roppa (MNRJ). 1 female: HYMNRJ 000061\ S. dos Carajás PA V.1986 O. Roppa (MNRJ). 1 female: Coleção Campos Seabra \ Santarém Pará Brasil Julho 1955 M. Silva (DZUP) . 1 female: HYMNRJ 000052\ Coleção Campos Seabra \ Santarem Pará Brasil julho 1955 M. Silva Mapirí (MNRJ) . 1 female: HYMNRJ 000060\ Coleção Campos Seabra \ Santarem Pará Brasil julho 1955 M. Silva Urumarí (MNRJ) . 1 male: HYMNRJ 000088\ Coleção Campos Seabra \ Santarem Pará Brasil julho 1955 M. Silva Urumarí (MNRJ) . 1 male: HYMNRJ 000079\ Coleção Campos Seabra \ Santarem Pará Brasil 20 julho 1955 M. Silva (MNRJ) . 1 female: HYMNRJ 000062\ Vilhena PA X.1988 Becker, leg (MNRJ). 1 female: HYMNRJ 000069\ Cach. Tronco R. Cumina Para Almeida 4-9-36 (MNRJ) . 1 male: HYMNRJ 000087\ Pará Guamá 9.IX.55 Elias e Roppa col (MNRJ) . 1 female: HYMNRJ 000064\ Tucuriu PA II.84 B. Silva (MNRJ). 1 male: HYMNRJ 000078\ Tucuriu PA II.84 B. Silva (MNRJ). 1 female: Coleção Campos Seabra \ Mangabeira Mocajusa Pará Brasil VIII-1953 Orlando Rêgo (DZUP) . 1 female: Coleção Campos Seabra \ Rio Moja Pará Brasil X-1954 R. Damasceno (DZUP) . 5 males: Belterra PA Brasil VI 60 F. M. Oliveira (DZUP) . 1 female: Coleção Campos Seabra \ Cachimbo Pará Brasil VI-1962 Oliveira & Alvarenga leg (DZUP) . 1 male: R. Mapuera (Trombetas) 4,12,1907 Ducke \ Brazil Estado do Pará \ Centris atriventris Mocsary, 1896 ♂ PE. J. S. Moure det. 1990 (DZUP) . RONDÔNIA: 2 females: Deptº Zool UF-Paraná\ Pimenta Bueno - RO Brasil / III/70 M. Hümmelgen leg (DZUP) . 1 female: HYMNRJ 000089\ Ter. Guaporé M. Porto Velho Cach. Samuel Rio Jamary V-VI 1944 R. Parko (MNRJ) . 1 male: Brasil: Rondonia Porto Velho 5-IV-1979 S. Campbell (INPA) . 1 male: Brasil: Rondonia Porto Velho 5-IV-1979 S. Campbell \ C. (Melacentris) cfr. dimidiata ♂ (Olivier, 1789) Det. F. A. Silveira, 2013 (INPA) . 1 male: Brasil: Rondonia Porto Velho 6-IV-1979 S. Campbell (INPA) . 1 male: Brasil: Rondonia Porto Velho 18-IV-1979 S. Campbell (INPA) . 1 male: Brasil: Rondonia Porto Velho 14-IV-1979 8- Yodaco (INPA) . 2 females: Brasil Rondônia Rio Uraricoera Ilha de Maraca \ Estrada do porto\ Em flores 12-XI-1987 L.S. Aquino (INPA) . 1 female: Brasil Rondônia Rio Uraricoera Ilha de Maraca \ Estrada do porto 15-XI-1987 \ Em flores L.S. Aquino (INPA) . 1 female: Brasil Rondônia Rio Uraricoera Ilha de Maraca \ porto em flores\ 19-XI-1987 L.S. Aquino \ C. (Melacentris) cfr. dimidiata (Olivier, 1789) ♀ Det. F.A. Silveira, 2013 (INPA) . RORAIMA: 4 females: BR-RR Rio Parima-Porto FUNAI 20 /11/94 solo Col. Ulysus Barbosa (INPA) . COLOMBIA: AMAZONAS: 1 female: Colombia Amazonas P.N.N. Amacayacu R. Colubé, Caño Lorena F. Fernandez Col. Agosto 1990 \ ICN 012359 (ICN) . 1 female: Colombia Amazonas P.N.N. Amacayacu R. Colubé, Caño Lorena F. Fernandez Col. Agosto 1990 \ ICN 012361 (ICN) . 1 female: Colombia Amazonas Leticia. 65 Km W Amacayacu Nat Park 17-30 Sept 1986 D. Roubik coll.\ Centris denudans det. DWRoubik 87\ 3721\ LABUN 006975 (LABUN) . 1 female: Colombia, Amazonas Leticia, km 14, via Tarapaca 04º07,105’S 69º57,208’W Red, 200 masl, 4.IX.2001 Sharkey & D. Campos leg (CRBC) . CAQUETÁ: 1 female: Rio Orteguaza 4-IX-47 \ 0 341 (ICN) . 1 female: Colombia Caquetá Solano PNN Chiribiquete R. Mesay Captura manual 300m 00°14’N 02°56’W 01.II.2000 F. Quebedo leg.\ ICN 012360 (ICN) . META: 1 female: Soratoma Meta I-52 \ Centris melanocentris cf. atra \ 0 318 (ICN) .

PUTUMAYO: 1 female: Putumayo Pto Asis Sta Helena Capt: sabana, Jama Col: Nacho. 24-IX-87 \ Centris (Melanocentris) sp. Det: Moure, Mayo /90\ 0 429 (ICN) . VAUPÉS: 1 female: Vaupes Mitu Col: Marta Bueno 15 III 77 \ 4215\ LABUN 006985 (LABUN). ECUADOR: NAPO: 1 female: Napo, Ecuador D. Velastegui 1/6/1969 (FSCA) . PERU: AMAZONAS: 1 female: H. Bassler Collection Acc. 33591\ Rio Santiago Peru XI.12.23 F6198 (DZUP) . LORETO: 1 female: Peru LO Maynas Allpahuayo Mishana INIA trail 2-VI-01 Rasmussen \ CR-010\ CR col (CRBC) . SURINAME: SIPALIWINI: 1 female: Coleção Campos Seabra \ 912\ Papadron 31.3.1952 (DZUP) . VENEZUELA: AMAZONAS: 1 male: Amazonas Venezuela 5.I.1998 L. Rodriguez leg\ Centris dimidiata Moure det (DZUP) . WITHOUT INFORMATION: 1 female: Macapá Pará - Brasil Maio 1959 M. Alvarenga (DZUP) . 1 female: A 18 (INPA).

Comment. A female collected in the Brazilian state of Espírito Santo was found in DZUP with the following information: “Sta. Teresa-ES Brasil 23-III-54 C. Elias leg”. This record needs to be confirmed because it is far away from the distribution range of this species (see Fig. 25).