Temnomastax descampsi Olivier, 2019

Olivier, Renan S., Pujol-Luz, Cristiane V. A. & Graciolli, Gustavo, 2019, Review of Temnomastax Rehn & Rehn, 1942 (Orthoptera, Caelifera, Eumastacidae, Temnomastacinae), Zootaxa 4593 (1), pp. 1-78 : 52-55

publication ID

https://doi.org/ 10.11646/zootaxa.4593.1.1

publication LSID

lsid:zoobank.org:pub:3491BEB3-53F4-413A-A05D-48BB0C7029DF

persistent identifier

https://treatment.plazi.org/id/797887DC-3E6A-5E22-FF1A-9F5DFB0EFEA1

treatment provided by

Plazi

scientific name

Temnomastax descampsi Olivier
status

sp. nov.

Temnomastax descampsi Olivier sp. nov.

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:499769

Figures 4E View FIGURE 4 , 5E View FIGURE 5 , 6E View FIGURE 6 , 7F View FIGURE 7 , 8E View FIGURE 8 , 9D View FIGURE 9 , 11A View FIGURE 11 , 12E View FIGURE 12 , 13E View FIGURE 13 , 14E View FIGURE 14 , 15E View FIGURE 15 , 19A View FIGURE 19 and 30 View FIGURE 30

Temnomastax borellii [in part] Rehn & Rehn 1942: 13 (identification key), 16 ( Figures 4 View FIGURE 4 and 10 View FIGURE 10 ); Descamps 1973a: 219 (Figure 45), 278 (Figures 389–394); 1973b: 964 (record), 966 (Figure 65), 968 (Figure 67 and identification key); Olivier 2014: 458 (identification key), 460 ( Figure 8 View FIGURE 8 ).

Temnomastax sp. nov. 1, Olivier & Aranda 2018: 268 –275 (morphometric analysis).

Type-series. Holotype ♂ — HOLOTYPE (printed on red paper)\ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\ Brasil, Mato Grosso, Chapada dos Guimarães, I.2013 (Patiu & Mello-Patiu col.) [MNRJ]; Allotype ♀ — ALLOTYPE (printed on red paper)\ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\Etat Mato Grosso, Chapada dos Guimaraes, 25.I.1972 \Muséum Paris, Bresil, M. Descamps rec.\ Temnomastax borellii ( Giglio-Tos, 1897) \MNHN-EO-CAELIF 4052 [MNHN]; 49 Paratypes ♀ and 13 Paratypes ♂ — PARATYPE (printed on yellow paper)\ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\Etat Mato Grosso, Chapada dos Guimaraes, 25.I.1972 \Muséum Paris, Bresil, M. Descamps rec.\ Temnomastax borellii ( Giglio-Tos, 1897) \ Females coded as MNHN-EO-CAELIF 4052 and Males coded as MNHN-EO-CAELIF 4051 [MNHN]; 2 Paratypes ♂ — PARATYPE (printed on yellow paper)\ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\ Brasil, Mato Grosso, Chap. dos Guimarães, Vale do Eco—Cerrado, 15°24’S / 55°50’W (van Someren modf.—isca artificial [modified van Someren trap—artificial bait]), 12.I.2012, SISBIOTA CNPq/FAPESP (Mello Patiu & Patiu col.) [MNRJ]; 8 Paratypes ♂ — PARATYPE (printed on yellow paper)\ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\ Brasil, Mato Grosso, Chapada dos Guimarães—Cerrado, 15°24’21.8”S / 55°50’07.5”W, 15–23.I.2012, SISBIOTA CNPq/FAPESP (Mello Patiu & Patiu col.) [MNRJ and ZUFMSORT00698, 699].

Type locality. Chapada dos Guimarães, Mato Grosso, Brazil .

Depository. Holotype and nine Paratypes ♂: Museu Nacional da Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil . Allotype and 62 Paratypes ♂: Muséum national d'Histoire naturelle, Paris, France. Two Paratypes ♂: Coleção Zoológica de Referência da Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil .

Etymology. Specific epithet after Dr. Marius Descamps for his immeasurable contribution to the study of South American Eumastacidae .

Diagnosis. Medium (♂  21.70 mm, ♀ = 25.23 mm). This species differs from the other three of Tigris group by its short elliptical tegmina of male with 2.0x the pronotum length. Male epiproct entirely narrow. Male cerci with an odontiform process in the ventroapical region. LPjEp with membranous ornamentation on the posterior face. Posterior region of epiphallus without upward curvature in lateral view, lowered in relation to the anterior region. Female subgenital plate with many cuticular striations, and its posterior margin rounded and broadly projected backward.

Description. Male ( Figure 19A View FIGURE 19 ). HOLOTYPE \ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\ Brasil, Mato Grosso, Chap. dos Guimarães, Vale do Eco—Cerrado, 15°24’S / 55°50’W (van Someren modf.—isca artificial), 12.I.2012, SISBIOTA CNPq/FAPESP (Mello Patiu & Patiu col.) [MNRJ]. Measurements (mm): bd 22.40, pt 2.69, tg 5.45, hf 15.10, ht 16.22.— Head: Subtriangular in frontal view ( Figure 4E View FIGURE 4 ). Antennae (3.73). Fastigium (0.30 mm). Eyes slightly protruding in frontal view ( Figure 4E View FIGURE 4 ). Frons, clypeus and labrum yellow ( Figure 4E View FIGURE 4 ). Mandibular joints light brown. Mandibles yellow. Thorax: Pronotum: Slightly sellate, posterior region of pronotal disk slightly upward curved in lateral view ( Figure 6E View FIGURE 6 ). Posterior margin of pronotal disk fissured centrally ( Figure 6e View FIGURE 6 ). Thoracic sternites yellow. Wings: Brachypterous (tg / hf 0.36). Tegmina elliptical; reaching the 3 rd abdominal tergite (2.0x the pronotum length); Rp arising from Ra in the medio-distal region; M sinuous, simple, reaching the apex; 1Cu reduced, reaching the median region; 2Cu present, weakly marked, apparently arising from proximal region of 1Cu and fused to 1Cu apically; 1A and 2A well marked, 3A reduced, 4A and 5A vestigial ( Figure 7F View FIGURE 7 ). Membranous wings with four lobes when extended (remigium + three anal lobes); M diverging from R+M in the median region, with angulation of approximately 45 degrees; 1Cu present, sinuous in the ½ distal; VD fused to i distally; 1A–3A well marked, 4A reduced; 1a and 2a well marked ( Figure 7f View FIGURE 7 ). Legs (Right/Left): Ventral face of protibiae with 7/7 outer spines and 7/6 inner spines. PrTm1 with approximately 2.0x the length of PrTm2. Ventral face of mesotibiae with 7/7 outer spines and 6/7 inner spines. MsTm1 with approximately 2.0x the length of MsTm2. Dorsal face of metatibiae with 26/26 inner spines and 25/25 outer spines. MtTm1 with approximately 2.5x the length of MtTm2. Abdomen: Posterior-ventral regions of the 9 th and 10 th abdominal tergites as in the Figure 8E View FIGURE 8 . Epiproct entirely narrow from the base to the apex, lateral margins very folded downward, apex little rounded ( Figure 8e View FIGURE 8 ). Cerci laterally compressed, dorsal edge with wide curvature, but not uniformly rounded, ventro-apical region with an odontiform process, apex not curved inward ( Figure 9D View FIGURE 9 ). Membranous distal area of subgenital plate fusiform horizontally and distinctly rugose; one distinct central carina and two weak incomplete lateral carinae; posterior margin of subgenital plate slightly projected backward in lateral view ( Figure 8E View FIGURE 8 ). Phallic complex: Epiphallus: Posterior region ahead of the LPjEp lowered in relation to the anterior region and not curved upward in lateral view ( Figure 11a View FIGURE 11 ); LPjEp abruptly curved downward and apex with little sclerified expansion; posterior face of LPjEp with membranous ornamentation (MbOnEp) formed by numerous lobes ( Figures 10A, a View FIGURE 10 ). Endophallus: Outer margin in the anterior region of endophallic plate bilobed, medial margins of lobes almost parallel; inner arc seemingly triangular, but with rounded vertices; branches slightly convergent and tips parallel in ventral view ( Figure 12E View FIGURE 12 ); broad ventral curvature in lateral view, some evident ripples ventrally on the outer margin of branch ( Figure 12e View FIGURE 12 ); spermatophore sac as in the Figure 12e View FIGURE 12 ; ejaculatory sac horizontally elongated, anterior end rounded, posterior end less rounded and with slight posterior curvature until reach the endophallic plate ( Figure 12e View FIGURE 12 ).

Female ( Figure 19A View FIGURE 19 ) (based on photos). ALLOTYPE \ Temnomastax descampsi sp. nov. (Renan Olivier det. VI.2017)\Etat Mato Grosso, Chapada dos Guimaraes, 25.I.1972 \Muséum Paris, Bresil, M. Descamps rec.\ Temnomastax borellii ( Giglio-Tos, 1897) \MNHN-EO-CAELIF 4052 [MNHN]. Measurements (mm): bd 25.23, pr 2.83, tg 5.08, hf 15.73, ht 16.46.— Head: Antennae (2.94 mm). Fastigium (0.30). Thorax: Brachypterous (tg / hf 0.32). Posterior margin of pronotal disk rounded. Tegmina reaching the distal portion of the 2 nd abdominal tergite (1.8x the length of pronotum), elliptical. Spines on the pro-, meso-, and metatibiae not quantified; PrTm1 with approximately 2.0x the length of PrTm2; MsTm1 with approximately 2.0x the length of MsTm2; MtTm1 with approximately 2.5x the length of MtTm2. Abdomen: Posterior-ventral regions of the 8 th abdominal tergite with few cuticular striations ( Figure 13E View FIGURE 13 ). Epiproct as in the Figure 14E View FIGURE 14 . Paraprocts with the same length of epiproct. Cerci reaching the distal ⅓ of paraprocts ( Figure 14E View FIGURE 14 ). Subgenital plate: With a gradient of colors from yellow in the anterior region to brownish in the posterior region; lateral regions partially covered by the ventral portions of the 8 th abdominal tergite, mainly in the medium anterior region ( Figure 15E View FIGURE 15 ); cuticular striations present on the entire lateral regions and more marked in the medium posterior region ( Figure 15E View FIGURE 15 ); posterolateral regions not exceeding the length of the 8 th abdominal tergite in lateral view ( Figure 13E View FIGURE 13 ); posterior margin rounded and broadly projected backward, not smooth and with a wavy appearance in ventral and lateral views ( Figures 13E View FIGURE 13 and 15E View FIGURE 15 ). Ovipositor as in the Figure 13E View FIGURE 13 . Other characters as in male.

Sexual dimorphism. hf ♀ / hf ♂ 1.07.

Measurements (mm). ♂ (n=11). bd 20.81–23.27 (21.70), pr 2.56–2.73 (2.62), tg 4.77–5.83 (5.28), hf 14.12– 15.29 (14.62), ht 15.02–16.60 (15.74); ♀ (n=1). bd 25.23, pr 2.83, tg 5.08, hf 15.73, ht 16.46.

Intraspecific variation. The central carina on male subgenital plate may be absent. Sometimes the anterior bilobed region of endophallic plate very similar to T. hamus .

Material examined. Brazil: Mato Grosso state: 24 ♂ and 50 ♀ of the type-series; 2 nymphs ♂ — Brasil, Mato Grosso, Chapada dos Guimarães, IX.1978 (Monné, Roppa e Becker)\ Coleção Campos Seabra \ T. descampsi Olivier, Olivier, R.S. det. 2017 [ MNRJ] .

Distribution. Known only from Chapada dos Guimarães region, in the state of Mato Grosso, Brazil ( Figure 30 View FIGURE 30 ).

Biological notes. Some specimens were attracted by fish baits.

Remarks. Morphology: This topic is discussed above; see remarks section of T. borellii .

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

SubOrder

Caelifera

Family

Gryllidae

SubFamily

Temnomastacinae

Tribe

Temnomastacini

Genus

Temnomastax

Loc

Temnomastax descampsi Olivier

Olivier, Renan S., Pujol-Luz, Cristiane V. A. & Graciolli, Gustavo 2019
2019
Loc

Temnomastax

Olivier, R. S. & Aranda, R. 2018: 268
2018
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