Titanogryllus oxente Souza-Dias & de Mello, 2018

Jaiswara, Ranjana, Souza-Dias, Pedro G. B., Campos, Lucas Denadai De, Redü, Darlan R., De Mello, Francisco De A. G. & Desutter-Grandcolas, Laure, 2018, Titanogryllus n. gen., the largest Gryllinae cricket from the Neotropical Region with three new species from the Brazilian Atlantic Forest (Orthoptera, Grylloidea, Gryllidae), Zootaxa 4402 (3), pp. 487-507 : 501-503

publication ID	https://doi.org/ 10.11646/zootaxa.4402.3.4
publication LSID	lsid:zoobank.org:pub:AFBEB273-0057-4F25-B702-CA2CB4568361
DOI	https://doi.org/10.5281/zenodo.5987503
persistent identifier	https://treatment.plazi.org/id/039987AF-8035-FFCF-FF4B-6EB3FE813390
treatment provided by	Plazi
scientific name	Titanogryllus oxente Souza-Dias & de Mello
status	sp. nov.

Treatment

Titanogryllus oxente Souza-Dias & de Mello View in CoL n. sp.

Figures 1C View FIGURE 1 , 11–12 View FIGURE 11 View FIGURE12 , 13B View FIGURE 13

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:501949

Type locality. Brazil, Bahia State, municipality of Porto Seguro.

Etymology. Oxente is a common expression used in the daily speech of the inhabitants of Northeastern Brazil. Oxente is an interjection of astonishment, doubt, frustration, impatience, surprise. The word is a noun in apposition.

Distribution. Atlantic Forest, in Bahia State, municipalities of Porto Seguro and Itamaraju.

Type material. Holotype, 4 male paratypes. Holotype: male, with genitalia removed and kept with the specimen, labeled “ Campo 0 0 0 3 Mison [Misonete Costa, leg.]. Sul da Bahia ( Porto Seguro ). 23/10/2003 . (BOTU). Paratypes: 4 males. 1 male, subgenital plate and genitalia removed, labeled “ Brasil ( Ba ) [Bahia], Trancoso. Sperber, leg. 22.ix.2006 ” ( MZSP) . 1 male labeled “BR, BA [Bahia], Itamaraju. Parque Nacional do Monte Pascoal. 08-11.iii.2012. Dias, P.G.B.S. et al., col.” ( MZSP) ; 1 male, same data as the previous paratype ( BOTU) ; 1 male labeled “ Brasil ( Ba ) [Bahia], Trancoso. Sperber, leg. 22.ix.2006 ” ( BOTU).

Diagnosis. Species large (~ 3cm body length), general coloration medium to dark brown. Male genitalia: anterior margin of pseudepiphallic sclerite without medial furrow; lateral lophi bifurcated, inner margins of distal part touching each other; medial lophi wide, rounded, posterior margin concave; pseudepiphallic parameres not surpassing the apex of lateral lophi, apex pointed.

Description. In addition to the characters of the genus:

General coloration medium to dark brown ( Figs. 1C View FIGURE 1 , 11A View FIGURE 11 ). Head. Head large, wider than long, medium brown ( Figs. 1C View FIGURE 1 , 11A–D View FIGURE 11 ). Posterior margin of occiput medium brown ( Figs. 11A, B View FIGURE 11 ). Occiput and vertex glabrous ( Figs. 11A–D View FIGURE 11 ). Eyes small, without unpigmented area ( Figs. 11B, C View FIGURE 11 ). Fastigium medium brown, glabrous, wide as vertex, at least 2x wider than antennal scape ( Figs. 11A, B View FIGURE 11 ). Antennal scape and antennomeres medium brown ( Figs. 11A–D View FIGURE 11 ). In lateral view, gena medium brown ( Fig. 11C View FIGURE 11 ). Three ocelli, almost in line; lateral ocellus smaller than in T. oxossi n. sp., circular; median ocellus small, flat ( Figs. 11B–D View FIGURE 11 ). Maxillary palpi medium brown; apex rounded, whitish ( Fig. 11C View FIGURE 11 ). Frons medium brown, very short, shorter than clypeus and labrum ( Fig. 11D View FIGURE 11 ). Clypeus, labrum and mandibles medium brown ( Fig. 11D View FIGURE 11 ).

Thorax. DD saddle-shaped, glabrous, wider than long, medium brown; cephalic margin concave, caudal margin convex ( Figs. 1C View FIGURE 1 , 11A, B View FIGURE 11 ). LL ventro-cephalic angle rounded, ventral margin straight, ventro-caudal angle ascendant ( Fig. 11C View FIGURE 11 ).

Legs. Legs I, II light brown. Tympanum on both sides of TI. TI with 2 ventral spurs and 1 dorsal (inner). TII with 4 spurs. Legs III not specially elongated, shorter than body length. FIII medium brown, articulation with TIII dark brown. TIII and basitarsus–III medium brown ( Fig. 11A View FIGURE 11 ). Double row of spines on basitarsus–III ( Fig. 11A View FIGURE 11 ). TIII with spines before the subapical spurs; subapical spurs 3/3. Apical spurs: median longest on both sides, dorsal slightly shorter, ventral smaller.

Abdomen. Abdomen medium brown, glabrous ( Fig. 11A View FIGURE 11 ). Sternites medium brown. Cerci light brown.

Male. Male FWs large, reaching tergite 6, medium brown; anal vein area bulged dorsally; harp crossed with 4 almost transverse veins; stridulatory vein with 56–86 teeth (n=3); mirror undivided, distinct from apical venation; apical field very short, almost reduced; lateral field with 4-5 longitudinal veins ( Figs. 11A, F View FIGURE 11 , 13B View FIGURE 13 ). Metanotum without metanotal structures. Male supra anal plate light brown, with medium brown macula; constricted medially, proximal margin slightly concave, distal margin rounded ( Fig. 11F View FIGURE 11 ). Subgenital plate medium brown, triangular, proximal margin almost straight, distal margin rounded ( Fig. 11G View FIGURE 11 ).

Male genitalia. Pseudepiphallus: anterior margin without medial furrow ( Figs. 12A View FIGURE12 ); apex of lateral lophi bifurcated, inner margins of distal part touching each other ( Fig. 12A View FIGURE12 ); medial lophi wide, rounded, posterior margin concave ( Figs. 12A, C View FIGURE12 ). Rami elongated, apically bent towards ventral side; apex of each ramus separated ( Figs. 12A–C View FIGURE12 ). Pseudepiphallic parameres not surpassing the apex of lateral lophi, apex pointed ( Fig. 12B View FIGURE12 ). Ectophallic invagination: ectophallic apodemes shorter than in T. salgado n. sp. ( Figs. 12A, B View FIGURE12 ); ectophallic arc dorsal, thin, almost indistinguishable, below pseudepiphallic medial lophi; ectophallic fold furrowed, longer than in T. salgado n. sp. ( Fig. 12B View FIGURE12 ). Endophallus: endophallic sclerite small, related to ectophallic fold ( Fig. 12B View FIGURE12 ); endophallic cavity reduced.

Female. Unknown.

Measurements (mm). Males (n=6)– mean (range): BL – 29.17 (26.7–31.65); PL – 4.5 (3.9–4.95); PW – 6.65 (6– 7.2); FWL – 12.17 (10.95–13.95); FWW – 7.2 (6.3–8.7); LFIII – 18.45 (16.65–20.1); WFIII – 5.45 (4.5–6.15); LTIII – 10.47 (9.75–11.4).