Anacroneuria minuta Klapálek, 1922

Ribeiro, José Moacir Ferreira & Rafael, José Albertino, 2009, Redescription of the species of Anacroneuria Klapálek known from the Reserva Florestal Adolpho Ducke, Amazonas, Brazil with a neotype designation, and a key to adults males, Amazonas, Brazil. , Zootaxa 2004, pp. 1-15: 2-5

publication ID

10.5281/zenodo.185621

persistent identifier

http://treatment.plazi.org/id/03AD87E8-993B-170C-FF04-A252FE9EFCBC

treatment provided by

Plazi

scientific name

Anacroneuria minuta Klapálek, 1922
status

 

Anacroneuria minuta Klapálek, 1922 

( Figures 1 –5View FIGURES 1 – 5, 16– 25View FIGURES 16 – 25)

Anacroneuria minuta Klapálek, 1922: 89  ; Kimmins, 1970: 345; Ribeiro– Ferreira & Froehlich, 2001: 188, Figs. 1–4View FIGURES 1 – 5 (redescription); Froehlich, 2002: 82, Figs. 18–21View FIGURES 16 – 25 (recharacterization).

Diagnosis. Pronotum with lateral stripes faintly darker than the integument. The aedeagus has a distinct keel and two membranous vesicles situated distal to keel. The female eighth sternum is composed of four subequal lobes.

Redescription of male ( Fig. 1View FIGURES 1 – 5). The lectotype is in poor condition and inappropriate for use. Redescription is based on fresh material from RFAD. Body light yellow in life (whitish when preserved in alcohol). Body length 5.0– 7.6 mm, excluding antennae and cerci. Head ( Fig. 3View FIGURES 1 – 5) light yellow, length 0.7–0.9 mm long, width 1.3–1.4 mm. Frons ( Fig. 3View FIGURES 1 – 5) with inconspicuous ‘M’–shaped spot of similar color, just behind the base of the antennae. Ocelli brown to black surrounded by brown to black, medially separated by a distance 1 X their width. Antennal scape and pedicel light yellow, flagellum dark yellow with brown bristles. Maxillary palpi brownish on the apex; labial palpi light yellow. Pronotum ( Fig. 3View FIGURES 1 – 5) with lateral stripe faintly darker than integument. Meso– and metanotum with marginal protruberances outlined in black. Legs light yellow, with coxae and trochanter outlined in black; apex of femur ringed with black dorsally; tibiae with small black spot distally. Fore and hindwings as in Figs. 4 & 5View FIGURES 1 – 5. Abdomen light yellow, distally brown. Cerci light yellow with brown bristles. Sternum nine ( Fig. 16View FIGURES 16 – 25) slightly wider than long with longer lateral bristles and posterior margin produced into a slightly rounded hammer ( Figs. 17, 18View FIGURES 16 – 25) that is subcylindrical, approximately 0.1 mm long, usually with sclerotized apex. Paraproct ( Fig. 19View FIGURES 16 – 25) widest at base, with small apical bristles and short subapical denticle. Aedeagus with median keel and two membranous vesicles situated distally to the keel. Penial armature ( Figs. 20–22View FIGURES 16 – 25) with hooks directed inward.

Female. Body coloration similar to male ( Fig. 2View FIGURES 1 – 5), differs from male in the following: body length 8.8–12.2 mm, forewing length 10.5–12.5 mm, hindwing length 8.6–11.6 mm. Antennal flagellum brown. Sternum eight ( Fig. 23View FIGURES 16 – 25) wider than long with long lateral bristles and four subequal lobes. Sternum nine ( Fig. 24View FIGURES 16 – 25) with longer, denser submedian bristles; distal margin slightly sinuous. Sternum ten produced distally. Vaginal sclerite membranous ( Fig. 25View FIGURES 16 – 25).

Nymphs. Unknown.

Eggs. Unknown.

Variation. Males with antennae and tarsomeres light yellow to light brown. Female antennae with scape and pedicel light yellow to brown, flagellum dark yellow to brown, maxillary palpi light to dark yellow; pronotum with sublateral longitudinal stripe sometimes straighter; sternum eight with median notch and apex of cerci segments light to dark brown.

Remarks. Ribeiro-Ferreira & Froehlich (2001) redescribed A. minuta  from 2 males and 1 female reared in the laboratory on 30 September 1987. They were preserved in a teneral state. Additional material allows the authors to provide a discussion of color patterns that may be useful for separating the four species of Anacroneuria  found in Reserva Floresta Adolpho Ducke. Mature A. minuta  are light yellow in life ( Fig. 1–3View FIGURES 1 – 5) and similar to A. amazonica  . This separates them from A. manauensis  which is dark brown ( Fig. 6–8View FIGURES 6 – 10) and from A. marlieri  ( Fig. 11–13View FIGURES 11 – 15) which has a deeper yellow color. The head, antennae and mouth parts in A. minuta  are also light yellow and similar in color to both A. marlieri  and A. amazonica  . Conversely, these areas in A. manauensis  are of a deeper shade of yellow. The pronotum of A. minuta  has a lateral stripe ( Fig. 3View FIGURES 1 – 5) that is only faintly darker than the background, while in A. manauensis  there is a light yellow, V-shaped, median stripe outlined in dark brown laterally ( Fig. 8View FIGURES 6 – 10). In A. marlieri  there is a light yellow median stripe outlined by a narrow brown stripe laterally ( Fig. 14View FIGURES 11 – 15). Anacroneuria amazonica  lacks bands on the pronotum and the entire disk is light yellow.

The relative separation of the ocelli is also useful. The interocellar space of A. minuta  , A. marlieri  , and A. amazonica  generally equals the width of one ocellus, while in A. manauens  it is the width of two ocelli ( Fig. 8View FIGURES 6 – 10).

The hammer of A. minuta  is subcylindrical ( Fig. 16–18View FIGURES 16 – 25), while in A. manauensis  it is rounded ( Fig. 26–28View FIGURES 26 – 35) and in A. marlieri  it is rounded or conical ( Fig. 36-38View FIGURES 36 – 45). Penial armature is also useful in distinguishing species. In A. minuta  the vesicle is conical and mostly membranous, having a small dorsal keel at its base. In the other species the vesicle is well sclerotized and lacks the dorsal keel.

The subgenital plate of the female of this species differs from other regional species in that the paramedial and lateral lobes are subequal in height and the notches between them being of the same depth. In A. manauensis  the paramedial lobes are longer than the laterals and the median notch is deeper than the sublateral notches. In A. malieri  the lateral lobes are slighly longer and larger than the paramedials, which are fused, forming a truncate tab ( Fig. 43View FIGURES 36 – 45). The subgenital plate of A. amazonica  is distinctive, with the paramedials being much larger than the lateral lobes ( Froehlich 2003, Ribeiro-Ferreira & Froehlich 2003, as A. marlieri  , Fig. 16View FIGURES 16 – 25). Sternum nine of A. minuta  has two diffuse patches of bristles, with few hairs distributed between them ( Fig. 24View FIGURES 16 – 25). This area in A. manauensis  and A. marlieri  is clothed with a T-shaped band of spinules ( Fig. 34View FIGURES 26 – 35, 44View FIGURES 36 – 45), or in the case of and A. amazonica  is comprised of a wide, medial band of spinules, separated from more diffuse patches laterally ( Froehlich 2003, Ribeiro-Ferreira & Froehlich 2003, as A. marlieri  , Fig. 16View FIGURES 16 – 25).

Distribution. Brazil (Pará, Amazonas)

Type material examined. Lectotype male ( MNHAbout MNH) designated by C. G. Froehlich in Kimmins (1970). BRASIL, [Pará], Santarém.

Other material examined: BRASIL, Amazonas, Manaus, Reserva Ducke, Ig[arapé]. Bons Amigos, criação, 10.vi. 1987, A.C.Ferreira, Anacroneuria minuta Klapálek  , det. J.M.F.Ribeiro, 2003 (1 female INPAAbout INPA); same location, Ig. Anta, 11–30.ix. 1987, (2 female INPAAbout INPA); same location, 03–08.vi. 1988 (4 female INPAAbout INPA); same location, Ig. Barro Branco, 01.vii. 1988 (1 female INPAAbout INPA); same location, arm[adilha] Malaise, 06– 17.viii. 1992, João Vidal, D.Menezes & Jailson Vidal (3 female INPAAbout INPA); same location, Ig. Acará, arm. Malaise, 05.viii. 1993, João Vidal (4 female INPAAbout INPA); same location, Ig. Anta, criação, 11.viii. 1994, A.C.Ferreira, (1 female INPAAbout INPA); same location, Ig. Bons Amigos, 24.viii. 1994 (1 male, 3 female, INPAAbout INPA); same location, arm. Malaise, 22.vii. 1995 (1 male, 1 female INPAAbout INPA); same location, arm. suspensa baixa, 12–16.v. 1997, João Vidal (1 female INPAAbout INPA); same location, arm. Suspensa na lâmina d’água, 07– 10.iv. 1997, João Vidal (1 female INPAAbout INPA); same location, Ig. Acará, criação, 10–16.vii. 1997, A.C.Ferreira (1 female INPAAbout INPA); same location, Ig. Barro Branco, arm. Malaise, 21–31.vii. 1997, R.L.M.Ferreira, A.L.Henriques & João Vidal (2 female MZSPAbout MZSP); same location, Ig. Anta, criação, 12–25.ii. 1998, A.C.Ferreira, (1 female INPAAbout INPA); same location, Ig. Barro Branco, 14–16.i. 2002, João Vidal (2 female MPEGAbout MPEG); same location, Ig. Ipiranga, 14–16.ix. 2002, J.M.F.Ribeiro & João Vidal (2 female MZSPAbout MZSP); same location, Ig. Acará, emergência no igarapé, 24.vii. 2002, J.M.F.Ribeiro & João Vidal, (1 female INPAAbout INPA); same location, Ig. Barro Branco, arm. luminosa, 29.vii. 2002, João Vidal, (2 female MPEGAbout MPEG); same location, Ig. Acará, criação, 02.viii. 2002, J.M.F.Ribeiro & João Vidal, (1 female INPAAbout INPA); same location, arm. luminosa, 29.viii. 2002, João Vidal & J.M.F.Ribeiro (1 female INPAAbout INPA); same location, Ig. Ipiranga, arm. Malaise, 13–14.ix. 2002, João Vidal & J. M. F. Ribeiro (2 female MPEGAbout MPEG); same location, Ig. Tinga, 08– 11.xi. 2002 (4 female INPAAbout INPA); same location, Ig. Uberê, 05.xii. 2002, J.M.F. Ribeiro (2 female MZSPAbout MZSP); same location, Ig. Uberê, 17–27.xii. 2002, J.M.F.Ribeiro & João Vidal (1 male, 1 female MPEGAbout MPEG); same location, Ig. Ipiranga, 13.i. 2003, J.M.F.Ribeiro (2 female MZSPAbout MZSP); same location, 20.i. 2003 (4 female INPAAbout INPA); same location, 27.i. 2003, J.M.F.Ribeiro & Jailson Vidal (4 female INPAAbout INPA); same location, Ig. Bolívia, 18–24.ii. 2003, J.M.F.Ribeiro (2 female INPAAbout INPA); same location, Ig. Tinga, 10–17.iii. 2003 (1 female MZSPAbout MZSP); same location, Ig. Ipiranga, 01–06.iii. 2003, João Vidal & Jailson Vidal (1 female INPAAbout INPA); same location, Ig. Ipiranga, criação, 19.iv. 2003 (2 female INPAAbout INPA); same location, 01–07.iv. 2003, J.M.F.Ribeiro (f 2 MPEGAbout MPEG); same location, arm. Malaise, 28.iv. 2003 (1 female INPAAbout INPA); 13–20.v. 2003 (f 2 MPEGAbout MPEG); same location, 19–26.v. 2003 (f 1 MZSPAbout MZSP); same location, 26.v.02 –vi. 2003 (f 2 MZSPAbout MZSP); same location, 30.vi. 2003, J.M.F.Ribeiro (f 1 INPAAbout INPA); same location, criação (f 1 INPAAbout INPA); same location, Ig. Acará, arm. Malaise, 04– 11.viii. 2003, J.M.F.Ribeiro & A.S.Filho (1 female INPAAbout INPA); Amazonas, Manaus, Ig. Puraquequara, 10.xi. 1998, João Vidal (4 female INPAAbout INPA); same location, 14–16.i. 2002 (f 1 INPAAbout INPA).

Condition of Lectotype Pinned and in poor condition. Antennae missing; left wing mounted between two plastics slides, joined by micro–pins; terminalia in microvial in glycerin; plastic slide and microvial to the specimen pin.

MNH

Musei Nacionalis Hungarici

INPA

Instituto Nacional de Pesquisas da Amazonia

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Perlidae

Genus

Anacroneuria

Loc

Anacroneuria minuta Klapálek, 1922

Ribeiro, José Moacir Ferreira & Rafael, José Albertino 2009

2009
Loc

Anacroneuria minuta Klapálek, 1922 : 89

Froehlich 2002: 82
Ferreira 2001: 188
Kimmins 1970: 345Klapalek 1922: 89

1970