Eidmanacris speluncae ( Mello-Leitão, 1937 ) Nihei, 2017

Nihei, Silvio S., 2017, Taxonomic review of Eidmanacris Chopard, 1956 (Orthoptera: Grylloidea: Phalangopsidae), Zootaxa 4321 (1), pp. 1-93 : 45-49

Eidmanacris speluncae ( Mello-Leitão, 1937) comb. nov.

( Figs. 30–32 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:499163

Arachnopsis speluncae Mello-Leitão, 1937: 11 (female description). Type locality: Brazil, state of Minas Gerais, municipality of Santa Bárbara.

Arachnopsis speluncae , Costa Lima 1940: 44 (note); Costa Lima & Costa Leite, 1953: 169 (note). Phalangopsis speluncae, Chopard, 1968: 284 (catalogue); Pinto-da-Rocha, 1995: 116 (faunal inventory); Mews & Sperber, 2009: 647 –655 (note).

Material examined. Total: 10 males and 4 females. 1 male and 1 female labeled: “Gruta CH-24 Mina Conta História , Mariana-MG, 654822mE/7762702mN SAD’ 69, 23–30.ix. 08, Pellegatti et al. col.” 3 males labeled: “ Mina Alegria , Mariana-MG, 10.x.2010, Basi et al. col. Gruta RF-23 1 male labeled: “Barão dos Cocais-MG, 657243mE/7796388mN SAD’ 69, 10–21.iii. 09, R. Andrade et al. col”1 male and 1 female labeled: “Gruta RF-55 Barão dos Cocais-MG, 654571mE/7794897mN SAD’ 69, 22.iv –03.vii.09, R. Bessi et al. col.” 1 male labeled: “Gruta PBR12—Brumadinho-MG, 607308mE/7770983mN SAD’ 69, 28.ix –03.x.2009, Bessi et al. col.”. 2 males and 1 female labeled: “Gruta AP-57-Santa Bárbara-MG, 0637478mE/7785067mN SAD’ 69, 13–17.iv. 2010, Bessi et al. col.” 1 male labeled: “Gruta AP-49—Caeté-MG, 0636873mE/7784042mN SAD’ 69, 13–17.iv. 2010, Bessi et al. col.” (UBTU). All specimens preserved in ethanol 80%.

Distribution. Brazil, state of Minas Gerais.

Diagnosis. This species can be distinguished from other Eidmanacris by the following characters: first 40 antenomeres dark brown, followed by whitish antenomeres; pseudepiphallic arm with a line of bristles on outer surface; apex of pseudepiphallic arm clavate; superior, inferior and internal projections reduced; PsP2 rounded outside, concave inside, with small spine pointed anteriorly in ventral view; dorsal projections of ectophallic invagination wide posteriorly, posterior margin concave; posterior apex of ectophallic fold surpassing apex of pseudepiphallic arms; copulatory papilla dorso-ventrally flattened, anterior third little wider in dorsal and ventral views, anterior border whitish.

Redescription. Head. Medium to light brown. Occiput light to medium brown, with maculae yellowish brown, band medium brown going from occiput to margin of each eye ( Fig. 30C ); vertex with three almost no discernible lines vertical, light brown. Fastigium medium to dark brown, longer than wide, slightly narrowed at apex, narrower than scape; separated from vertex by straight line forming “v” ( Fig. 30C ). Frons light to medium brown, with two lateral, dark bands below eyes ( Figs. 30A, C ). Three ocelli present, well developed, lateral elliptical, central flattened at bottom ( Figs. 30A, B, C ); eyes with unpigmented area on supero-internal angle ( Fig. 30C ). Maxillary palpi light brown, joints 3 and 4 medium brown, very long, thin, joints 3–5 almost same-sized ( Fig. 30G ), apex of joint 5 whitish, up-curved. Gena light brown ( Figs. 30A, B ). Frontoclypeal suture medium brown, centrally dark. Clypeus whitish with central maculae light brown; labrum whitish, lower portion light brown. Mandible dark yellow, inner and lower margins dark. Antennal scape yellowish brown, inner surface dark brown ( Figs. 30A, B, C ); about first 40 antenomeres dark brown, followed by whitish antenomeres.

Thorax. Pronotum DD medium brown, anterior third dark, wider than long, inflated, with sparse dark spots and maculae, divided by thin, light yellow sagittal line; DD cephalic margin slightly concave, caudal margin almost straight ( Fig. 30C ); ventro cephalic angle rounded, margin light to medium brown, ventro caudal margin darker, gradually ascendant ( Fig. 30B ).

Legs. FI and II yellowish, annulated with dark brown. TI and II light yellow, annulated with dark brown; TI with two same-sized apical spurs, TII with two inner apical spurs, one outer, smaller. FIII yellowish brown, several thin stripes medium brown on outer surface, apical third dark brown ( Fig. 30F ). TIII medium to dark brown, apical third lighter; subapical spurs 4/4, serrulation above and between subapical spurs; apical spurs 3/3, more developed on inner surface; inner apical spurs: median one longer (iam), dorsal shorter (iad), ventral smallest (iav) (iam>iad>iav); outer apical spurs: median one longer (oam), dorsal (oad) little longer than ventral (oav) (oam>oad>oav). Basitarsi I, II and III yellow, elongated.

Abdomen. Sub-cylindrical, medium brown, marbled, divided by thin sagittal line light brown ( Fig. 30D ).

Male. Large-sized body, general coloration medium brown, marbled. FWs medium brown, inner margin light brown, less sclerotized, rounded, apex connected to single vein medium brown that divides external part of FW as lateral field, posterior margin with tiny glandular thickening ( Figs. 30B, C ); inner margins not touching each other; FWs covering metanotal gland area, posterior margin not surpassing posterior metanotum border ( Fig. 30C ). Metanotal gland present, with anteromedian crest triangular, line of bristles vertically divided pointing out; lateral projections cylindrical, short, top rounded, near each other; posteriorly, long bristles pointing anteriorly ( Figs. 30H, I ). Supra-anal plate dark brown, anterior margin slightly concave, posterior margin sub-straight; lateral-distal projection very short, similar E. larvaeformis , posteriorly with long setae ( Fig. 30J ). Subgenital plate light brown, lateral borders dark, longer than wide, anterior margin sub straight, posterior margin somewhat rounded ( Fig. 30K ).

Phallic complex ( Figs. 31A–C ; 32A–C). Pseudepiphallus: base of pseudepiphallic sclerite weakly sclerotized, median part narrow; pseudepiphallic arms more sclerotized than base of pseudepiphallic sclerite, slender like in E. meridionalis , upcurved, slightly curved inwards in dorsal and ventral views, outer surface with line of bristles; apex of pseudepiphallic arm clavate; superior, internal and inferior projections very reduced; anterior projection of pseudepiphallic sclerite long and thin, anteriorly pointed in lateral view, surpassing base of pseudepiphallic sclerite; PsP2 well sclerotized, elongate, not surpassing posterior extremity of pseudepiphallic arms, curved inwards, rounded outwards, concave, with membranous sphere in the concavity; small spine anteriorly pointed in ventral view; articulated with sclerite A laterally; PsP1 short, wider than long in ventral view, pointed posteriorly in ventral view, inner surface well sclerotized. Ectophallic invagination: Ectophallic apodeme elongate, slightly upcurved, laterally flattened; ectophallic arc short, located posteriorly to base of pseudepiphallic sclerite; dorsal projection weakly sclerotized, elongate, curved inwards, reaching apex of PsP 2 in dorsal view; ventro-posterior projection sclerotized, not so elongate, curved outwards in ventral view. Endophallus: median-posterior projection of pseudepiphallic sclerite elongate, surpassing pseudepiphallic arms apex, apex wide in ventral view; lateralposterior lobes of endophallic sclerite somewhat short; endophallic apodeme elongate, upcurved in lateral view, anterior limit almost reaching ectophallic apodeme anterior margin.

Female. Larger than male, general coloration medium brown, marbled ( Fig. 30E ). Supra-anal plate medium to dark brown, posterior lateral margins darker, posterior margin rounded with bristles ( Fig. 30L ). Subgenital plate light brown, posterior margin concave, with small central concavity ( Fig. 30M ). Ovipositor as in figs. 30N and 30O.

Copulatory papilla ( Figs 32D–F ). Dorso-ventrally flattened, longer than wide, anterior third little wider in dorsal and ventral views, posterior margin concave, anterior borders unpigmented.

Remarks. This species was described based on a single female. Females of Eidmanacris do not provide as many informative characters for species delimitation as males do. Thus, with the description of the male we can properly re-define the species, and transfer it to Eidmanacris . This species has all the characters that are used in the diagnosis of Eidmanacris . The specimens described here were compared with the holotype, through photographs available in the Orthoptera Species File ( Cigliano et al., 2017).

Measurements (mm). Male (n=7): Hw, 3.7 ± 0.32 (3.22–4.09); iod, 1.86 ± 0.08 (1.73–1.98); Lpron, 4 ± 0.59 (3.03–4.71); awpron, 3.25 ± 0.14 (2.97–3.41); pwpron, 3.96 ± 0.56 (3.34–4.52); wpron, 5.19 ± 0.59 (3.34–4.52); LFW, 2.06 ± 0.19 (1.86–2.35); wFW, 1.67 ± 0.24 (1. 3–1.92); LFIII, 18.3 ± 2.08 (16.2–21.15); wFIII, 3.42 ± 0.3 (3.15–3.75); LTIII, 20.28 ± 1.81 (18.6–22.8); Ltars 1-III, 5.61 ± 0.73 (4.65–6.6).

Female (n=1): Hw, 4.03; iod, 1.98; Lpron, 4.4; awpron, 3.09; pwpron, 4.89; wpron, 5.83; LFIII, 20.4; wFIII, 3.9; LTIII, 22.65; Ltars 1-III, 6; OL, 17.85.

Figures

FIGURE 30. Eidmanacris speluncae (Mello-Leitão). Topotypes. A — male head, frontal; B — male head, pronotum and FW, lateral; C — male head, pronotum and FWs, dorsal; D — male abdomen; 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 31. Eidmanacris speluncae (Mello-Leitão). Topotypes. Male phallic complex: A — dorsal; B — ventral; C — lateral. Scale bar: 0.5 mm.

FIGURE 32. Eidmanacris speluncae (Mello-Leitão). Topotypes. Male phallic complex: A — dorsal; B — ventral; C — lateral. Female copulatory papilla: D — dorsal; E — ventral; F — lateral. Scale bar: 0.5 mm.