Xenogryllus lamottei Robillard

Jaiswara, Ranjana, Dong, Jiajia, Ma, Libin, Yin, Haisheng & Robillard, Tony, 2019, Taxonomic revision of the genus Xenogryllus Bolívar, 1890 (Orthoptera, Gryllidae, Eneopterinae, Xenogryllini), Zootaxa 4545 (3), pp. 301-338: 312-315

publication ID

https://doi.org/10.11646/zootaxa.4545.3.1

publication LSID

lsid:zoobank.org:pub:A6A7B9CE-9905-4DA7-8011-747D4B9325F7

persistent identifier

http://treatment.plazi.org/id/6A6AC46E-CE0E-FFFB-E9AB-FF43FD82F907

treatment provided by

Plazi

scientific name

Xenogryllus lamottei Robillard
status

n. sp.

Xenogryllus lamottei Robillard  n. sp.

( Figs 1View FIGURE 1 H–I, 3C–D, 4B, 5B, 7D–E, 8C)

Type material. Holotype, ♂, Guinea: Simandou [Mount], Guinée [Guinea], Cpt.[camp] Fon Yenfédou , Ifan [Institut Français d’Afrique Noire], ix.1951, [M.] Lamotte (MNHN-EO-ENSIF10685). 

Type locality. Mount Simandou , Guinea  .

Distribution. Species only known from the type locality in Guinea.

Etymology. The species is dedicated to the great French entomologist Marcel Lamotte who collected the type specimen. Diagnosis. Species of average size, characterized by male FWs not widened as in other species of the genus; general morphology differing from the other African species ( X. eneopteroides  , X. mozambicus  n. sp. and X. maniema  n. sp.) and more similar to the Asian species ( X. marmoratus  , X. transversus  , X. ululiu  and X. maichauensis  ) by the following characters: pronotum not carinated laterally ( Fig. 3DView FIGURE 3); wrinkles on surface of male FWs weak; eyes small, restricted to dorsal quarter of head (reaching ½ of head in other African species); face almost flat in lateral view; male genitalia with short pseudepiphallic lophi ( Fig. 8CView FIGURE 8), close to that of X. ululiu  ( Fig. 8HView FIGURE 8), their apex short and bifid, with a pre-apical dorsal hook-like expansion (absent in other African species); ectophallic fold and latero-ventral expansions shorter than in other species.

Description. In addition to the characters of the genus, species of average size ( Fig. 1View FIGURE 1 H–I), coloration gray brown little contrasted. Fastigium longer than wide, thinner than in other species ( Fig.4BView FIGURE 4), slightly widened apically. Face almost flat in lateral view ( Fig. 3DView FIGURE 3), with typical pale mask with black spots underlined by a thick black line below eyes ( Fig. 3CView FIGURE 3); mandibles dark brown; clypeus and labrum mottled with yellow and dark brown; maxillary palpi dark brown. Scapes and first article of antennae dark brown, flagellum light brown. Eyes rounded and restricted to posterior quarter of head in lateral view. Pronotum dorsal disc not carinated laterally ( Fig. 3DView FIGURE 3), brown, with lateral margins underlined by a yellow line, with a median dark brown band, ticker posteriorly; posterior margin almost straight. FIII narrow, ended by a long linear region. Abdomen slightly shorter than FWs. Cerci dark brown.

Male. FWs as wide as abdomen ( Fig. 5BView FIGURE 5), not widened as in other species of the genus; light brown, translucent, with weak wrinkles on surface. Dark coloration anterior to 1A not including angle of file. CuP visible posteriorly until angle of 1A. Angle of 1A straight. Harp wide, with two straight parallel oblique veins and a partial one, straight and reaching harp mid-length. Cell c1 not narrowed posteriorly. Mirror almost rounded, its inner limit forming a curve; underlined posteriorly by cells e1 and d2 fused together. Apical field forming a narrow triangle made of four cell alignments (E–H). CuA thin and brown; M thick, whitish; R and Sc almost fused, brown; M-R area dark mostly brown, its dorsal margin whitish; lateral field translucent brown crossed by 22 banches of Sc.

Male genitalia ( Fig. 7View FIGURE 7 D–E): Pseudepiphallic lophi forming a short rectangle posterior to wide base of pseudepiphallic sclerite; lophi ( Fig. 8CView FIGURE 8) with a narrow membranous inner margin, setose basally; apex with a black hook-like inner dorsal expansion; sclerotized ventral blades of lophi with longitudinal wrinkles as in X. transversus  and X. ululiu  , but without strong ventral carina as in X. eneopteroides  and X. mozambicus  . Pseudepiphallic lateral membranous lobes small. Pseudephiphallic basal margin reinforcement weak. Rami thin and straight, their apex narrowed but not hooked innerly. Pseudepiphallic parameres ventral plate r-shaped. Ectophallic arc not sclerotized. Ectophallic apodemes thin and divergent. Ectophallic fold and latero-dorsal expansions short. Endophallic sclerite and apodeme little differentiated.

Female: Unknown.

Life history traits. Unknown.

Calling song. Unknown.

Measurements. See Table 3.