Polybia scrobalis scrobalis Richards, 1970

Polybia scrobalis scrobalis Richards, 1970: 303; Holotype ♀, Brazil: MT (MNRJ; lost), not examined. Richards 1978: 40, 87; Rasmussen & Ansejo 2009: 48.

Diagnosis. FEMALE. Fore wing ca. 6.5–7.0 mm; occipital-genal margin weak and obliterated behind ocelli, but distinct laterally; pronotal carina absent; pronotal prominence in front of the fovea moderately elevated; first metasomal segment rather short and wide at apex, with the sides distally rather rounded as seen from above, convex side view, typically with a wide distal yellow band. Proportional ratios: LSI / HMP—0.85; LSI / WT1_AP—1.94; WT1_AP / WT1_BA—2.83 (Fig. 23). MALE (Fig. 40). fore wing with ca. 7.0 mm; occipital-genal margin obliterate and very weak laterally; FHH/INTOW—0.96; malar space very short; eyes practically bare; clypeus slightly wider than high (HCLP/WCLP—1.06) and with apex broadly rounded; clypeus with very short, erect, pale, closely spaced and numerous bristles at apex; pronotal carina absent; prominence in front of fovea moderately elevated; body without bristles; LMS/WMS—0.92; scrobal furrow distinct for almost its entire length above and obliterated below almost at the end; first metasomal segment moderately elongated, with widened apex, and with rounded sides at the apex, in lateral view with a distinctly convex dorsal profile; yellow band not as wide as in females. Proportional ratios: LSI / HMP—1.0; LSI/WT1_AP—1.76; WT1_AP / WT1_BA—3.45. MALE. Unknown.

Examined material. BRAZIL: Acre, Bujari, FES, Antimary, 9°20'01”S, 68°19'17”W, 1♀ 21.x–04.xi.2016, Malaise (E. F. Morato, J.A. Rafael); Amapá, Laranjal do Jari, 00°47'06”S, 52°27'46”W, 2♀ 09.v.2001, (J. Luís, J. Madson) (IEPA) ; Amazonas, Alvarães, Terra Firme, 5Km SW, 24 ♀ 20.ix. 1993 (I. S. Gorayeb, O.T. Silveira), 10♀ 30.ix.1993 (I. S. Gorayeb, O.T. Silveira), 1♀ 26– 31.1.1994, Armadilha suspensa (I.S. Gorayeb, O.T. Silveira) 1♀ 01– 05.ii.1994, Malaise (I. S. Gorayeb, O.T. Silveira), 2♀ 05– 09.ii.1994, Armadilha suspensa (I. S. Gorayeb, O.T. Silveira), 1♀ 26– 31.1.1994, Armadilha suspensa (I.S. Gorayeb, O.T. Silveira) (MPEG); Careiro, Castanho, BR–319, Km–181, 4°12'48”S, 60°49' 04”W, 1♀ 5–17.x.2016, Malaise (J. A. Rafael, F. F. Xavier), Est. BR–174, Km 115 , 1♀ 16.xi.1977 (Altamiro), Novo Airão, Rod. AM 352, Km –68 , 2°48'58"S, 60°55'18"W, 2♀ 21–31.vii.2016 (J. A. Rafael, F. F. Xavier), 1♀ 14– 28.ix.2016 (J. A. Rafael, F. F. Xavier), 1♀ 14–28.x.2016 (J. A. Rafael, F. F. Xavier), 2♀ 11– 30.x.2016 (J. A. Rafael, F. F. Xavier), Parque Nacional do Jaú, 1°97'S, 61°45'W, 1♀ 10– 30.x.1993, Malaise (Andreazze, R., Motta, C., Vidal, J.), Res. da Campina, BR–174, Km 44, 2°35'S, 60°02'W, 2♀ 23.vi.2005 (Oliveira, Sorti, Storti– Filho), S.G. da Cachoeira, Rio Uape, P.E.F Queran, 01°04'51.3”S, 69°50'32.1”W, 1♀ 15–30.vi.2017, Malaise (D. Bandeira), Tefé, Terra Firme, 3°25'19”S, 64°37'05”W, 1♀ 01–21.viii.2017, Malaise (D.M.M. Mendes, J.A. Oliveira, J.A. Rafael), ZF2, 2°35'21 ”S, 60°06'55”W, 1♀ 16–30.x.2016, Malaise (F.F. Xavier, J.A. Rafael), (INPA); Maranhão, Alto Turiaçu, Aldeia Gurupiuna, 1♀ 16–19.ii.1990, Armadilha suspensa (Helder Queiroz and team), Buriticupu, Faz. Cacique, 7♀ 30.ix.1978 (M.F. Torres) (MPEG); Pará, Acará, 17♀ 25.i.1978 (S. A. Santos) , 1♀ 25.i.1978 (P. Tadeu) , 28♀ 12.viii.1977 (P. Waldir), Anajás, 1♀ 07.ix.1982 (W. Overal) , 8♀ 10.xii1982 (W. Overal) , 1♀ 18.xii.1982 (W. Overal), Arapiranga, 8♀, 04.vii.1977 (P. Waldir, L. Braack), Aveiro, Cataueré, Rio Mamuru, 03 °24'30.4”S, 56°24'16.5”W, 1♀ 25.ix.2009, Rede entomológica (J. Pena, O.T. Silveira, S.S. Silva), Belém, Mocambo, 1♀ 21.ii.1978, Malaise, 1♀ 23.v.1978, Malaise, 1♀ 20.vi.1978, Mosqueiro, 5♀ 16.viii.1978 (F.F. Ramos) , 1♀ 17.xii.1983 (L.B. Albuquerque), Paricamiri, 8♀ 09.iv.1979, Paricatuba, 2♀ 12.iv.1979 (R.B. Neto), Utinga, 1♀ 28.iii.1978, Armadilha Malaise, 7♀ 11.viii.1978 (W. França), Benevides, 1♀ 15–18.iii.1993, Armadilha suspensa (J. A. Pena), 1♀ 19–25.iii.1993 (T. Pimentel) , 1♀ 23–24.iii.1993 (T. Pimentel), Faz. Morelândia, 1♀ 08–11.xii.1983 (W. dos Santos) , 1♀ 11.xii.1983 (W. dos Santos), PA 408 Km 06 , 1♀ 24.vi.1981, 4♀ 25.vi.1981, 1♀ 26.vi.1981, 1♀ 07.v.1982, 1♀ 08.v.1982, Faro, 1♂, 02.ix.1907 (Ducke), São Miguel, 10♀ 11.iv.1979 (R.B. Neto), São Félix do Xingu, R. Xingu, Serra do Pardo, 5°52’45”S, 52°47’43.5”W, 1♀ 24–27.iv.2012, Malaise (S.S. Silva), Bujaru, 26♀ 07.iv.1977 (P. Waldir) . 5♀ 28.vi.1977 (P. Waldir) , 23♀ 30.vi.1977 (L. Braack, P. Waldir), 45♀ 14.viii.1977 (P. Waldir) , 10♀ 15.viii.1977 (P. Waldir) , 4♀ 05.x.1977 (P. Waldir) , 5♀ 06.x.1977 (P. Waldir) , 31♀ 07.x.1977 (P. Waldir) , 10♀ 11.x.1977 (P. Waldir) , 1♀ 05.xi.1977 (P. Waldir) , 2♀ 12.i.1978 (W. França) , 10♀ 04.viii.1978 (S.A. Santos), Juruti, Jaratuba, Rio Mamuru, 03°11’32.6”S, 56°34’ 51.4”W, 1♀ 28.ix.2009, Malaise (J. Pena, O.T. Silveira, S.S. Silva), Pacoval, 1♀ 07.xii.2008, Malaise (J. Dias, S.S. Silva), R. Capiranga, 2°29’31”S, 56°10’28”W, 58♀ 26.v.2008, (Quaresma, Santos), Vista Bela, 03°07’00.0”S, 56°35’06.7”W, 29♀ 01.x.2009, Rede entomológica (J. Pena, O.T. Silveira, S.S. Silva), Melgaço, Caxiuanã ECFPn , 20♀ 20.iii1998 (O. Silveira, J. Pena), 4♀ 25.vi.1998 (J. Pena, O. Silveira); 9♀ 03.v.1999 (J. Pena, O. Silveira), Caxiuanã PPBio , 1♀ Trilha C, 22.iii.2006 (S. S. Silva, J. Dias), 6♀ Trilha 11, 23.vii.2006 (J. Dias, S.S. Silva), Ourém, Patalateua, 1♀ 15–17.viii.1992, Malaise (B. Mascarenhas), Paragominas, Faz. Cachoeira Rio Vermelho, 1♀ 15–18.i.1991, Malaise (J. Dias), São Francisco, 1♀ 02.vi.1979 (W.L. Overal), Serra Norte, Campo Rupestre, 12–15.ix.1983, Armadilha suspensa (F.F. Ramos, R.B. Neto), Est. Manganês, 1♀ 15.vi.1983, Armadilha suspensa , 2♀ 02–05.ix.1983 (R. B. Neto) , 1♀ 02–05.ix.1983 (F. F. Ramos) , 1♀ 05–09.ix.1983 (F. F. Ramos) , 1♀ 07.ix.1983 (M. F. Torres) , 1♀ 11.ix.1983, Armadilha suspensa (R. Neto), 1♀ 21–23.ix.1985, Armadilha suspensa (F. F. Ramos), Fofoca, 1♀ 17.v.1984, armadilha suspensa, 1♀ 28.vi.1984 (M. F. Torres) , 1♀ 16.ix.1985 (Márcio Zanuto), N–1 Floresta, 1♀ 28–31.x.1985, Malaise (W. França), N1– Estr. Serraria, 5♀ 06.ix.1983, Luz U.V., 2♀ 16.v.1984 (M. F. Torres) , 1♀ 25.x.1984, Coleta noturna (M. F. Torres), 1♂ 25.x,1984, Coleta noturna (M.F. Torres), Pojuca, 1♀ 24–27.x.1984, Armadilha suspensa, Rio Salobo, 2♀ 16–19.v.1984, Busca ativa, Senador José Porfirio, Margem Dir. Rio Xingu, 1♀ 1–3.iii.2001, Mata primária, Armadilha suspensa (R. Santos, J. Dias), Vigia, Campina, Ilha da Mata, 3♀ 09.xii.1988, Armadilha Suspensa (I.S. Gorayeb), Viseu, Fazenda Ema, 52°21’29”S, 01°25’13.5”W, 1♀ 13–24.vi.2000, Malaise (I. S. Gorayeb, T. Pimentel, J. O. Dias, R. N. Bittencourt), Vitória do Xingu—Travessão 50 , 92♀ 09.ii.2008 (J. Dias, S.S. Silva) (MPEG) .

Distribution. Peru; Bolívia; Brazil: Acre, Amapá *, Amazonas, Maranhão *, Mato Grosso, Pará, Rondônia.

Remarks. Richards (1978: 87) mentioned the presence of projections or ‘ flanges ’ on the nest envelope as a specific character. Eight nests were analyzed at MPEG, two of them have an envelope with small projections, as well as other characteristics of the nest following the pattern of other specimens: uniform light brown color, or mixed in dark and light brown; two or three combs; brood cell diameter ca. 4mm; total size 2.0 to 4.5 cm.