Anacroneuria minuta Klapálek, 1922, Klapalek, 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. (Plecoptera, Perlidae), Zootaxa 2004, pp. 1-15: 2-5

publication ID

http://doi.org/ 10.5281/zenodo.185621

DOI

http://doi.org/10.5281/zenodo.3507826

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

Anacroneuria minuta Klapálek, 1922: 89   ; Kimmins, 1970: 345; Ribeiro – Ferreira & Froehlich, 2001: 188, Figs. 1–4 View FIGURES 1 – 5 (redescription); Froehlich, 2002: 82, Figs. 18–21 View 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. 1 View 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. 3 View FIGURES 1 – 5 ) light yellow, length 0.7–0.9 mm long, width 1.3–1.4 mm. Frons ( Fig. 3 View 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. 3 View 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 & 5 View FIGURES 1 – 5 . Abdomen light yellow, distally brown. Cerci light yellow with brown bristles. Sternum nine ( Fig. 16 View FIGURES 16 – 25 ) slightly wider than long with longer lateral bristles and posterior margin produced into a slightly rounded hammer ( Figs. 17, 18 View FIGURES 16 – 25 ) that is subcylindrical, approximately 0.1 mm long, usually with sclerotized apex. Paraproct ( Fig. 19 View 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. 20–22 View FIGURES 16 – 25 ) with hooks directed inward.

Female. Body coloration similar to male ( Fig. 2 View 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. 23 View FIGURES 16 – 25 ) wider than long with long lateral bristles and four subequal lobes. Sternum nine ( Fig. 24 View FIGURES 16 – 25 ) with longer, denser submedian bristles; distal margin slightly sinuous. Sternum ten produced distally. Vaginal sclerite membranous ( Fig. 25 View 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. 1–3 View FIGURES 1 – 5 ) and similar to A. amazonica   . This separates them from A. manauensis   which is dark brown ( Fig. 6–8 View FIGURES 6 – 10 ) and from A. marlieri   ( Fig. 11–13 View 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. 3 View 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. 8 View FIGURES 6 – 10 ). In A. marlieri   there is a light yellow median stripe outlined by a narrow brown stripe laterally ( Fig. 14 View 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. 8 View FIGURES 6 – 10 ).

The hammer of A. minuta   is subcylindrical ( Fig. 16–18 View FIGURES 16 – 25 ), while in A. manauensis   it is rounded ( Fig. 26–28 View FIGURES 26 – 35 ) and in A. marlieri   it is rounded or conical ( Fig. 36-38 View 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. 43 View 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. 16 View FIGURES 16 – 25 ). Sternum nine of A. minuta   has two diffuse patches of bristles, with few hairs distributed between them ( Fig. 24 View FIGURES 16 – 25 ). This area in A. manauensis   and A. marlieri   is clothed with a T-shaped band of spinules ( Fig. 34 View FIGURES 26 – 35 , 44 View 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. 16 View FIGURES 16 – 25 ).

Distribution. Brazil (Pará, Amazonas)

Type material examined. Lectotype male ( 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 INPA); same location, Ig. Anta, 11–30.ix. 1987, (2 female INPA); same location, 03–08.vi. 1988 (4 female INPA); same location, Ig. Barro Branco, 01.vii. 1988 (1 female INPA); same location, arm[adilha] Malaise, 06– 17.viii. 1992, João Vidal, D.Menezes & Jailson Vidal (3 female INPA); same location, Ig. Acará, arm. Malaise, 05.viii. 1993, João Vidal (4 female INPA); same location, Ig. Anta, criação, 11.viii. 1994, A.C.Ferreira, (1 female INPA); same location, Ig. Bons Amigos, 24.viii. 1994 (1 male, 3 female, INPA); same location, arm. Malaise, 22.vii. 1995 (1 male, 1 female INPA); same location, arm. suspensa baixa, 12–16.v. 1997, João Vidal (1 female INPA); same location, arm. Suspensa na lâmina d’água, 07– 10.iv. 1997, João Vidal (1 female INPA); same location, Ig. Acará, criação, 10–16.vii. 1997, A.C.Ferreira (1 female INPA); same location, Ig. Barro Branco, arm. Malaise, 21–31.vii. 1997, R.L.M.Ferreira, A.L.Henriques & João Vidal (2 female MZSP); same location, Ig. Anta, criação, 12–25.ii. 1998, A.C.Ferreira, (1 female INPA); same location, Ig. Barro Branco, 14–16.i. 2002, João Vidal (2 female MPEG); same location, Ig. Ipiranga, 14–16.ix. 2002, J.M.F.Ribeiro & João Vidal (2 female MZSP); same location, Ig. Acará, emergência no igarapé, 24.vii. 2002, J.M.F.Ribeiro & João Vidal, (1 female INPA); same location, Ig. Barro Branco, arm. luminosa, 29.vii. 2002, João Vidal, (2 female MPEG); same location, Ig. Acará, criação, 02.viii. 2002, J.M.F.Ribeiro & João Vidal, (1 female INPA); same location, arm. luminosa, 29.viii. 2002, João Vidal & J.M.F.Ribeiro (1 female INPA); same location, Ig. Ipiranga, arm. Malaise, 13–14.ix. 2002, João Vidal & J. M. F. Ribeiro (2 female MPEG); same location, Ig. Tinga, 08– 11.xi. 2002 (4 female INPA); same location, Ig. Uberê, 05.xii. 2002, J.M.F. Ribeiro (2 female MZSP); same location, Ig. Uberê, 17–27.xii. 2002, J.M.F.Ribeiro & João Vidal (1 male, 1 female MPEG); same location, Ig. Ipiranga, 13.i. 2003, J.M.F.Ribeiro (2 female MZSP); same location, 20.i. 2003 (4 female INPA); same location, 27.i. 2003, J.M.F.Ribeiro & Jailson Vidal (4 female INPA); same location, Ig. Bolívia, 18–24.ii. 2003, J.M.F.Ribeiro (2 female INPA); same location, Ig. Tinga, 10–17.iii. 2003 (1 female MZSP); same location, Ig. Ipiranga, 01–06.iii. 2003, João Vidal & Jailson Vidal (1 female INPA); same location, Ig. Ipiranga, criação, 19.iv. 2003 (2 female INPA); same location, 01–07.iv. 2003, J.M.F.Ribeiro (f 2 MPEG); same location, arm. Malaise, 28.iv. 2003 (1 female INPA); 13–20.v. 2003 (f 2 MPEG); same location, 19–26.v. 2003 (f 1 MZSP); same location, 26.v.02 –vi. 2003 (f 2 MZSP); same location, 30.vi. 2003, J.M.F.Ribeiro (f 1 INPA); same location, criação (f 1 INPA); same location, Ig. Acará, arm. Malaise, 04– 11.viii. 2003, J.M.F.Ribeiro & A.S.Filho (1 female INPA); Amazonas, Manaus, Ig. Puraquequara, 10.xi. 1998, João Vidal (4 female INPA); same location, 14–16.i. 2002 (f 1 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: 345
Klapalek 1922: 89
1922