Amblyrhethus bahiensis, Campos & de Mello, 2022

Campos, Lucas Denadai de & de Mello, Francisco de Assis Ganeo, 2022, Three new species of Amblyrhethus (Orthoptera, Grylloidea, Gryllidae, Paroecanthini) from Brazil, Journal of Orthoptera Research 31 (2), pp. 121-141 : 121

publication ID

https://dx.doi.org/10.3897/jor.31.84135

publication LSID

lsid:zoobank.org:pub:280146F3-CB02-4B86-A05E-D9DEA53D5FC6

persistent identifier

https://treatment.plazi.org/id/82ED62CF-5218-48DB-BB88-ECBC55168978

taxon LSID

lsid:zoobank.org:act:82ED62CF-5218-48DB-BB88-ECBC55168978

treatment provided by

Journal of Orthoptera Research by Pensoft

scientific name

Amblyrhethus bahiensis
status

sp. nov.

Amblyrhethus bahiensis sp. nov.

(Figs 3 View Figure 3 , 4 View Figure 4 , 7 View Figure 7

Material examined. -

Holotype: BRAZIL • ♂; BA[hia], Lençóis / P[ar]q[ue] Nac [ional] da Chapada Diamantina; 12°35'16"S, 41°24'35"W, 600-950 m; 13-19 February 2013; de Mello leg.; CNPq- SISBIOTA | 4453663 | LDC_SIS_001; BOTU. GoogleMaps

Type locality. -

Brazil, Bahia, Lençóis municipality.

Etymology. -

Toponymic, referring to the state of Bahia, Brazil.

Diagnosis. -

This species is distinguished from the other species of Amblyrhethus by the following characters: male metanotum without projections, first abdominal tergite with two lamellar humps close to anterior margin; supra-anal plate lateral margins finger-shaped. Male genitalia: PsP posterior margin truncated; rami slightly curved inwards; EctAp anterior margin slightly curved outwards in dorsal and ventral views.

Description. -

Head. Fastigium wider than long, smooth (Fig. 3C View Figure 3 ). Three ocelli present, aligned in frontal view (Fig. 3C View Figure 3 ); lateral ocelli rounded, median ocellus elliptical, smaller than lateral ones; frons smooth (Fig. 3C View Figure 3 ). Antennal scape longer than wide, thinner than fastigium in frontal view. Maxillary palpi articles 3, 4, and 5 almost same-sized; article 5 sub-straight (Fig. 3B View Figure 3 ). Thorax. Dorsal disk wider than long, covered by bristles (Fig. 3A View Figure 3 ). Dorsal disk cephalic margin slightly concave, caudal margin convex (Fig. 3A View Figure 3 ). Lateral lobes ventro-cephalic and ventro-caudal angles rounded (Fig. 3B View Figure 3 ). Forewings covering abdomen, hindwings slightly longer than forewings (Fig. 3A, B View Figure 3 ). Legs. TI with tympana present on inner and outer faces; three apical spurs, two ventral, one dorso-internal. TII with three apical spurs, two ventral, one dorso-internal. TIII subapical spurs 5/4, with one spine between each spur, except proximal spurs with two spines; seven spines above subapical spurs on inner and outer sides. FIII longer than TIII (Fig. 3B View Figure 3 ). TIII inner apical spurs: iad>iam>iav; outer apical spurs: oam>oav>oad. Basitarsus dorsal spines 3/1; inner apical spur slightly longer than outer apical spur.

Male. Forewings slightly shorter than hindwings; anal area slightly bulged dorsally (Fig. 3B View Figure 3 ), A1 connected to A2. Stridulatory vein (PCu vein) present, portion close to CuPa strongly sinuous. Harp crossed by four veins connected to CuPa; first and second harp veins shorter than third and fourth; third and fourth harp veins connected in the proximal region. Mirror as wide as long, divided in the middle by a curved vein on its right half. Apical field as long as mirror; lateral field with 12 diagonal veins (Fig. 3D View Figure 3 ). Metanotum without projections, first abdominal tergite with two lamellar projections close to anterior margin (Fig. 3E View Figure 3 ). Supra-anal plate posterior margin rounded (Fig. 3F View Figure 3 ), lateral margins finger-shaped on the middle; subgenital plate as long as wide, posterior margin convex (Fig. 3G View Figure 3 ).

Male genitalia: (Fig. 4 View Figure 4 ) Pseudepiphallus: pseudepiphallic sclerite trapezoidal in dorsal and ventral views; slightly curved upwards in lateral view; anterior margin somewhat rounded on median region (Fig. 4A View Figure 4 ). LLophi curved upwards, posterior margin rounded in dorsal and ventral views; ventral face translucent (Fig. 4A, B View Figure 4 ). PsP longer than LLophi, inner margin not divided, posterior margin truncated, not surpassing posterior margin of pseudepiphallic sclerite in dorsal and ventral views (Fig. 4A, B View Figure 4 ); posterior half wider than anterior half in ventral view (Fig. 4B View Figure 4 ). Rami slightly curved inwards in dorsal and ventral views, two or more times longer than pseudepiphallic sclerite (Fig. 4A-C View Figure 4 ). Ectophallic invagination: EctF strongly sclerotized, triangular, on the edge of posterior margin of pseudepiphallic sclerite (Fig. 4A-D View Figure 4 ). EctAp longer than pseudepiphallic sclerite, anterior margin slightly curved outwards in dorsal and ventral views (Fig. 4A, B View Figure 4 ); arc not complete, curved posteriorly; ventral projections of ectophallic invagination shorter than arc. Endophallus: End short, u-shaped in the middle of pseudepiphallic sclerite (Fig. 4B View Figure 4 ).

Female. Unknown.

Coloration. -

Occiput, vertex, and pronotum general coloration reddish brown to medium brown (Fig. 3A, B View Figure 3 ). Face reddish-brown (Fig. 3C View Figure 3 ); antennal scape reddish-brown to dark brown; antennomeres yellowish with some isolated antennomeres medium brown (Fig. 3B View Figure 3 ). Forewings slightly translucent, medium brown. Metanotum whitish brown (Fig. 3E View Figure 3 ), abdominal tergites medium brown, darker on last segments. Supra-anal plate medium to dark brown, lateral margins darker (Fig. 3F View Figure 3 ). Abdominal sternites yellowish brown; subgenital plate medium brown (Fig. 3G View Figure 3 ). FI, FII, TI, and TII medium brown to yellowish brown. FIII yellowish-brown, slightly striped, distal margin darker; TIII yellowish-brown; spurs yellow with apex medium to dark brown; tarsomeres yellowish-brown (Fig. 3B View Figure 3 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Gryllidae

Genus

Amblyrhethus