Eidmanacris tridentata Desutter-Grandcolas, 1995

Nihei, Silvio S., 2017, Taxonomic review of Eidmanacris Chopard, 1956 (Orthoptera: Grylloidea: Phalangopsidae), Zootaxa 4321 (1), pp. 1-93 : 32-36

Eidmanacris tridentata Desutter-Grandcolas, 1995

( Figs. 21–23 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:28457

Eidmanacris tridentata Desutter-Grandcolas, 1995: 462 (male description). Type locality: Brazil, state of Espírito Santo, municipality of Santa Teresa.

Eidmanacris tridentata, Souza-Dias, Campos & Nihei, 2015: 554 (note).

Type material examined. Holotype male, 1 paratype male. Holotype male labeled: “Vitoria, Fundao, Sta. Teresa, Réserve biologique de Sta. Lucia, 22-XI-1992, Nuit ”; “ Muséum Paris , BRESIL / Etat de Espirito Santo, L. Desutter-Grandcolas, rec.”; “ Eidmanacris tridentata , L. DESUTTER DET.”; “ HOLOTYPE ” . Paratype male labeled: “ Vitoria, Fundao, Sta. Teresa, Réserve biologique de Sta. Lucia, 22-XI-1992, Nuit ”; “ Muséum Paris, BRESIL / Etat de Espirito Santo, L. Desutter-Grandcolas, rec.”; “ Eidmanacris tridentata , L. DESUTTER DET.”; “ PARATYPE ” ( MNHN). Dry specimens.

Other material examined. Total: 25 males and 42 females. 5 males and 1 female labeled: “ Brasil, ES, Sta. Teresa, Reserva Sta. Lucia, i-96, F. A. G. De Mello—S. S. Nihei leg ” . 20 males and 29 females labeled: “Reserva.

Biol. De Duas Bocas , Brasil, Cariacica-ES, 15–21/vii/2012, F. A. G. De Mello col.” ( UBTU). The examined types are dry, and all other specimens are preserved in ethanol 80%.

Distribution. Brazil, state of Espírito Santo.

Diagnosis. This species can be distinguished from other Eidmanacris by the following characters: FWs very short, not reaching posterior border of metanotum; metanotal gland absent; apex of pseudepiphallic arms trifid, forming three projection-like spines: superior, inferior and supero-internal; PsP2 elongate, thin, fused with sclerite A; ventral sclerotization of median posterior projection of endophallic slcerite only on anterior 2/3; copulatory papilla sclerotized in the middle; copulatory papilla membranous on anterior portion and larger, posterior portion unpigmented, laterally thinner in dorsal and ventral views.

Redescription. Head. Light to medium brown, with bands dark brown and sparse bristles. Occiput medium brown, with central maculae medium brown; vertex medium brown, with three central stripes light brown, longitudinal ( Fig. 21C ). Fastigium anteriorly blackish, posteriorly light brown, with two row of bristles, longer than wide, slightly narrowed toward apex, narrow than scape; separated from vertex by transverse line forming “v” ( Fig. 21C ). Frons light brown, with central stripe dark brown, two below eyes. Three n present, well developed, lateral ones elliptical, central flattened at bottom ( Figs. 21A, B, C ). Eye with unpigmented area on supero-internal angle ( Figs. 21A–C ). Maxillary palpi medium brown, long, thin, joints 4 and 5 almost same-sized; apex of joint 5 slightly upcurved, distal portion whitish ( Fig. 21G ). In frontal view, gena light brown; in lateral view, posterior margin medium brown ( Figs. 21A, B ). Frontoclypeal suture yellowish, centrally dark. Clypeus light brown, central part of upper margin medium to dark brown, lateral border medium brown; lower portion whitish. Labrum whitish, apex light brown ( Fig. 21A ). Mandible dark brown, with central maculae light brown. Antennal scape medium brown on inner surface, light brown on outer surface ( Fig. 21A ). Antenomeres medium brown with whitish bands of two or three antenomeres

Thorax. Pronotum DD medium to dark brown, as long as wide, inflated, slightly pubescent, divided by thin light brown sagittal line; DD cephalic margin almost straight, caudal margin slightly concave ( Fig. 21C ). Ventrocephalic angle broadly rounded, ventral margin gradually ascendant ( Fig. 21B ).

Legs. FI and II yellowish brown, annulated with dark brown. TI and II medium brown annulated with yellowish brown; TI with two same-sized apical spurs; TII with two inner, same-sized apical spurs, and one outer, smaller. FIII light brown, two bands of several thin stripes dark brown on outer surface, apical third dark brown ( Fig. 21F ); TIII yellowish brown; subapical spurs 4/4, serrulation between and above subapical spurs; apical spurs 3/3, inner surface more developed; inner apical spurs: median one longer (iam), dorsal smaller (iad), ventral smaller (iav) (iam>iad>iam); outer apical spurs: median one longer (oam), dorsal smaller (oad), ventral smaller (oav) (oam>oad>oam). Basitarsi I, II and III yellowish.

Abdomen. Pubescent, yellowish, marbled with dark brown, with dark spots and maculae, divided by thick, light brown sagittal line ( Fig. 21D ).

Male. Small-sized body (13–14 mm), general coloration of different shades of brown, marbled, with dark spots and maculae. FWs medium brown, very short, not reaching posterior border of metanotum, posterior margin light brown; single vertical vein almost no discernible that divides external part as lateral field; FWs inner margins touching each other ( Fig. 21C ). Metanotal gland absent. Supra-anal plate light to medium brown, lateral-posterior projections short; anterior margin concave, posterior margin almost straight ( Fig. 21J ). Subgenital plate light brown, posterior border medium brown, as long as wide, slightly pubescent; anterior margin almost straight, posterior margin with small, central invagination ( Fig. 21K ).

Phallic complex ( Figs. 22A–C ; 23A–C). Pseudepiphallus: base of pseudepiphallic sclerite centrally narrow, in dorsal view; pseudepiphallic arms sclerotized, straight, hard; apex of pseudepiphallic arms smooth, trifid, forming three projections pointed: superior, inferior and supero-internal; anterior projection of pseudepiphallic sclerite somewhat elongate, surpassing the base of pseudepiphallic sclerite, apex point in lateral view; PsP2 sclerotized, elongate, thin, no visible articulation with sclerite A, apex point downwards, membranous sphere on inner surface; PsP1 sclerotized, short, robust, longer than wide, apex almost reaching apex of pseudepiphallic arms in ventral view. Ectophallic invagination: Ectophallic apodeme long, dorso-ventrally flattened; ectophallic arc short, located posteriorly to base of pseudepiphallic sclerite; dorsal projection long, curved; ventro-posterior projection elongate. Endophallus: median-posterior projection elongated, posterior third not sclerotized; lateral-posterior lobes of endophallic sclerite elongate; endophallic apodeme elongate, curved upwards, apex not surpassing ectophallic apodeme apex.

Female. Larger than male, general coloration light to medium brown, marbled with dark brown ( Fig. 21E ). Head light brown, bands and stripes dark brown; maxillary palpi medium brown. Thorax dark brown, marbled; abdomen light brown, marbled with dark brown, with thin sagittal, light brown line well discernible. Supra-anal plate light brown, posterior third dark brown, anterior margin sub-straight, posterior margin rounded with not so long bristles ( Fig. 21L ). Subgenital plate light to medium brown, anterior margin lighter, posterior margin with central concavity ( Fig. 21M ). Ovipositor as in figs. 21N and 21O.

Copulatory papilla ( Figs. 23D–F ). Cylindrical, longer than wide, sclerotized in the middle; anterior portion membranous, larger; posterior portion whitish, laterally thinner in dorsal and ventral views.

Measurements (mm). Male (n=10): Hw, 2.7 ± 0.1 (2.54–2.79); iod, 1.44 ± 0.10 (1.24–1.55); Lpron, 3.03 ± 0.17 (2.72–3.38); awpron, 1.98 ± 0.07 (1.86–2.1); pwpron, 3.13 ± 0.13 (2.85–3.34); wpron, 3.79 ± 0.17 (3.79– 4.03); LFW, 0.76 ± 0.11 (0.62–0.99); wFW, 1.33 ± 0.13 (0.99–1.48); LFIII, 15.15 ± 0.74 (13.95–16.2); wFIII, 2.8 ± 0.14 (2.55–3); LTIII, 17.26 ± 1.13 (15.45–19.35); Ltars 1-III, 4.86 ± 0.34 (4.35–5.4).

Female (n=10): Hw, 3.26 ± 0.29 (2.85–3.72); iod, 1.61 ± 0.12 (1.42–1.79); Lpron, 3.63 ± 0.22 (3.28–3.96); awpron, 2.44 ± 0.25 (2.1–2.85); pwpron, 3.81 ± 0.23 (3.53–4.21); wpron, 4.57 ± 0.32 (4.21–5.08); LFIII, 18.19 ± 1.19 (16.65–19.65); wFIII, 3.37 ± 0.22 (3–3.75); LTIII, 20.62 ± 1.67 (18.3–23.4); Ltars 1-III, 5.14 ± 0.45 (4.5– 5.7); OL, 15.45 ± 1.10 (13.8–16.95).

Figures

FIGURE 21. Eidmanacris tridentata Desutter-Grandcolas. Male and female topotypes. A — male head, frontal; B — male head, pronotum and FW, lateral; C — male head, pronotum and FWs, dorsal; D — male abdomen, dorsal; E — female habitus; F — posterior femur; G — maxillary palpus; H — male metanotum, dorsal; I — male metanotum, lateral; J — male supra anal plate; K — male subgenital plate; L — female supra anal plate; M — female subgenital plate; N ovipositor dorsal; O — ovipositor ventral. Scale bar: A – F: 2 mm; G – O: 1 mm.

FIGURE 22. Eidmanacris tridentata Desutter-Grandcolas. Paratype. Male phallic complex: A — dorsal; B — ventral; C — lateral. Scale bar: 0.5 mm.

FIGURE 23. Eidmanacris tridentata Desutter-Grandcolas. Male and female topotypes. Male phallic complex: A — dorsal; B — ventral; C — lateral. Female copulatory papilla: D — dorsal; E — ventral; F — lateral. Scale bar: 0.5 mm.