Hygronemobius iperoigae Pereira, Miyoshi & Martins

Pereira, Marcelo Ribeiro, Miyoshi, Akio Ronaldo, Martins, Luciano De Pinho, Fernandes, Maria Luiza, Sperber, Carlos Frankl & Mesa, Alejo, 2013, New Neotropical species of Hygronemobius Hebard, 1913 (Orthoptera: Grylloidea: Nemobiinae), including a brief discussion of male genitalia morphology and preliminary biogeographic considerations of the genus, Zootaxa 3641 (1), pp. 1-20 : 8-12

Hygronemobius iperoigae Pereira, Miyoshi & Martins sp. n.

urn:lsid:zoobank.org:act:5B852419-B6A3-436B-B05F-ADA64557 DE 4B ( Figs. 3 , 4 , 5 B, 8A and C)

Etymology. The specific epithet refers to Iperoig village inhabited by South American indigenous of the Tupinambás ethnicity. The ancient village gave rise to the municipality of Ubatuba, SP, Brazil.

Type. Holotype, male, Brazil, SP, Ubatuba Municipality, Capricórnio farm, 15.x.2004, 23°23’S, 45° 04’W (A. R. Miyoshi, C. B. Portugal leg.).

Diagnosis. This species may be distinguished from the other species of Hygronemobius by the following combination of characteristics: (i) male genitalia with triangular shape, when in ventral and dorsal view ( Fig. 4 A,B); (ii) pseudepiphallic sclerite as long as wide, when in dorsal view ( Fig. 4 B); (iii) ectophallic apodeme crossing or surpassing the rami, when in ventral and dorsal view ( Fig. 4 A,B); (iv) endophallic lateral sclerites with wavy superior margins, visible in ventral view ( Fig. 4 A); (v) latero-inferior lobes of pronotum dark brownish with five light yellowish spots aligned in a semi-parabola shape on anterior portion, and a larger yellowish spot on posterior portion ( Fig. 3 B,F).

Description. Holotype, male, measurements (mm): BL 6.25; ID 0.81; LP 1.19; WP 1.61; LF 4.04; LT 2.96; TL 2.94; TW 2.53. Head covered with semi erect long black bristles from vertex middle line to central portion of frons, fine and short light brown bristles covering all its extension; general coloration dark yellowish, showing three light brownish stripes from vertex to superior margin of central ocellus and latero-internal margin of lateral ocelli; black eyes; three ocelli present, central ocellus surrounded by dark brown spots, lateral ocelli surrounded on latero-internal margin by one light brownish stripe; antennal scape light yellowish with an irregular light brownish spot; antennomeres light brownish; gena light yellowish; clypeus light yellowish with lateral margins light brownish and distal margin whitish; labrum light brownish with two centrals light yellowish stripes on the superior portion; mandibles coloration varying from light yellowish on proximal portion to light brownish on distal portion; maxillary and labial palpi whitish with truncate apex; last palpomere of each maxillary palpi with one light brownish ring on distal margin that covers the entire ventral surface. Thorax with pronotum light yellowish adorned by diffuse light brownish spots, presence of fine and short black bristles covering all its extension; longitudinal midline of pronotum with a light brownish spot close to its anterior margin, a light brownish dropshape spot at each side of the midline, and other two light brownish spots with light yellowish center close to the posterior margin of pronotum; latero-inferior lobes dark brownish with five light yellowish spots aligned in a semiparabola shape on anterior portion and a largest yellowish spot on posterior portion; some diffuse black bristles covering lateral lobe; row of long black bristles present on anterior and posterior pronotum border. Tegmina ( Fig. 3 D) light brownish with a longitudinal light yellowish stripe covering veins Cu1, M and a half of the harp; a light yellowish stripe covering veins 1A and 2A reaching the junction of Cu2, 1A, 2A and 3A; a light yellowish spot covering the proximal junction of veins 1A and 2A and another covering apical area and distal margin of cordal area. Hindwings absent. Prosternum light yellowish on anterior margin to light brownish on posterior margin, mesosternum dark brownish on anterior margin to light yellowish on posterior margin and metasternum light brownish with a fine light yellowish stripe on posterior margin. Fore and middle legs with similar pattern: coxa and trochanter light yellowish with indistinct light brownish spots; femur light yellowish, with some light brownish spots; tibia with two distinct light brownish rings being separated from each other by a light yellowish area; strong black bristles covering femur and tibia surface; tympanum present on fore tibia; first and third tarsomeres with two light brownish rings separated from each other by a light yellowish area, second tarsomeres light brownish. Hind leg femurs light yellowish with light brownish strips on dorsal and outer surface, presence of some black bristles on dorsal and ventral portion; tibia light yellowish with some light brownish spots and three inner and three outer dorsal spurs, two inner and three outer apical spurs; first and second tarsomeres light yellowish with one light brownish ring on distal margin, third tarsomeres light yellowish on proximal portion to light brownish on distal margin. Abdomen with tergites I–X dark brownish, tergite IV and V with one light brownish central spot on basal margin, tergites VI–VIII with two semicircular light brownish spot on each side of the midline, tergites VIII and IX with a little central spot light brownish, tergite X dark brownish. Supra-anal plate dark brownish on anterior margin to light brownish on posterior margin. Sternite I dark brownish on anterior margin to light yellowish on posterior margin, sternites II–VIII dark brownish with one light yellowish spot on each lateral thirds. Subgenital plate dark brownish with all angles rounded. Cerci light brownish on proximal margin to dark yellowish on distal margin. Male genitalia in paratypes: genitalia with triangular shape, visible in ventral and dorsal view ( Fig. 4 A,B); pseudepiphallic apical lobes setaceous, little sclerotized and showing a short invagination, visible in ventral and dorsal view ( Fig. 4 A,B); ends of pseudepiphallic apical lobes directed towards ventral side, visible in lateral view ( Fig. 4 C); pseudepiphallic sclerite little sclerotized, as long as wide and with no cleft, visible in dorsal view ( Fig. 4 B), presence of some setae in distal margins, visible in dorsal and lateral view ( Fig. 4 B,C). Ectophallic fold curved in a half disc format, visible in lateral view ( Fig. 4 C). Ectophallic apodeme crossing or surpassing the rami, both in ventral and dorsal view ( Fig. 4 A,B). Endophallus divided in three sclerites, being one central and two lateral ( Fig. 4 A); endophallic central sclerite longer than wide with bulged proximal ends, visible in ventral view ( Fig. 4 A); endophallic lateral sclerites with wavy superior margins, visible in ventral view ( Fig. 4 A). Female: body shape very similar to male, showing only the following differences: tegmina reduced to lateral scales. Tergite I dark brownish with only central portions light yellowish, tergites II–X light yellowish with some diffuse light brownish spots on all its extension and a fine light brownish stripe on basal margin, tergites II and III with lateral portions dark brownish, IV–X with latero-dorsal portions dark brownish. Supra-anal plate rounded and light yellowish. Sternites II–IV light brownish with a light yellowish narrow stripe on posterior margin connecting the two laterals spots; sternite VII light brownish with two light yellowish spot at lateral thirds. Subgenital plate light brownish with two light yellowish spots on posterior margin. Ovipositor with superior valves dark brownish on proximal portion to light brownish on distal portion and inferior valves light yellowish on proximal and median portion to light brownish on distal portion ( Fig. 3 F).

Male calling song in paratypes. ( Fig. 5 B): trains of chirps composed of 5, 6 or 7 pulses; chirps with 5 pulses lasted 116.91 ± 1.98 ms (114–119, n=57), 6 pulses 143.07 ± 1.88 ms (139–147, n=28) and 7 pulses 170.75 ± 0.75 ms (170–172, n=12); the chirps were separated from other chirps for 164.70 ± 18.61 ms (124–206, n=95) in undisturbed bursts of song; each pulse had a duration of 10.79 ± 0.87 ms (9–12, n=52) and inter-pulse interval of 15.46 ± 1.61 ms (13–18, n=43); pulse rate of 35–42 pulses/s and chirp rate of 180–216 chirps/min. The frequency amplitude ranged from 4.3 to 7.1 kHz with a dominant frequency between 5.2 and 5.7 kHz.

Remarks. Stridulatory file in paratypes with 69 and 89 teeth (n=2). One specimen emitted a chirp with 4 pulses, this chirp lasted 89 ms.

Measurements (mm). Males (n= 6, including holotype). BL 6.25–6.88 (6.58 ± 0.28); ID 0.73–0.84 (0.78 ± 0.04); LP 1.04–1.25 (1.13 ± 0.09); WP 1.56–1.69 (1.63 ± 0.04); LF 3.56–4.04 (3.75 ± 0.19); LT 2.76–2.96 (2.85 ± 0.07); TL 2.58–3.06 (2.76 ± 0.20); TW 2.15–2.53 (2.27 ± 0.15). Females (n= 7). BL 6.56–8.16 (7.30 ± 0.64); ID 0.73–1.42 (0.92 ± 0.23); LP 1.34–1.72 (1.53 ± 0.15); WP 0.74–2.00 (1. 67 ± 0.42); LF 4.00–4.44 (4.20 ± 0.16); LT 3.00–3.48 (3.09 ± 0.17); OL 3.00–3.48 (3.15± 0.18).

Occurrence. Ubatuba Municipality, SP, Brazil.

Material examined. Paratypes: 1 male and 4 females, same data as holotype; 2 males and 1 female, Brazil, SP, Ubatuba Municipality, Capricórnio farm, 15.x.2004 (A. R. Miyoshi leg.); 2 males and 2 females, Brazil, SP, Ubatuba Municipality, Capricórnio Farm, 28.iii.2003 (A. R. Miyoshi, C. B. Portugal leg.).

Figures

FIGURE 3. Hygronemobius iperoigae sp. n. A – C: male holotype (dorsal, lateral and ventral view; B: latero-inferior lobe of pronotum detailed in the upper right); D: male paratype, dorsal view of right tegmen; E – G: female paratype (dorsal, lateral and ventral view).

FIGURE 4. Male genitalia of Hygronemobius iperoigae sp. n. A— ventral view, B— dorsal view and C— lateral view. Abbreviations: Ps. A. L—pseudepiphallic apical lobe; Ps. M. L—pseudepiphallic median lobe; Ps. P—pseudepiphallic parameres; Ps. Sc—pseudepiphallic sclerite; End. Cv—endophallic cavity; Ect. F—ectophallic fold; Ect. Ap—ectophallic apodeme; End. Sc—endophallic sclerite; End. Ap—endophallic apodeme.

FIGURE 5. Calling song spectrograms. A— Hygronemobius indaia sp. n., B— Hygronemobius iperoigae sp. n.