Xenogryllus ululiu Gorochov, 1990

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: 334-335

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-CE24-FFD7-E9AB-FE52FD81F86A

treatment provided by

Plazi

scientific name

Xenogryllus ululiu Gorochov, 1990
status

 

Xenogryllus ululiu Gorochov, 1990 

( Figs 2View FIGURE 2 I–L, 3M–N, 4G, 5H, 7Q–R, 8H, 9E, 11K–L, 12E, 18)

Xenogryllus ululiu Gorochov, 1990: 14  — Gorochov 1992: 10; Kim & Pham 2014: 60; Robillard et al. 2007: 1267 (song frequency); Cigliano et al. 2018 ( Orthoptera  Species File Online) Jing et al. 2018: 274.

Type material. Holotype, ♂, Vietnam: Gia Lai, Kannack, A.V. Gorochov ( ZIN) [not examined]  . Paratype (16), Vietnam: Gia Lai, Kannack, A.V. Gorochov: 8–16. ii.1988, 1 ♂ (MNHN-EO-ENSIF2809) [examined]  .

Additional material examined. Vietnam: Gia Lai  , 2.ii.1993, 1♀, identified Xenogryllus ululiu  by A.V. Gorochov, molecular sample XulV (MNHN-EO-ENSIF2810); 7. XI.1993, 1 ♂, molecular sample XulV2, A.V. Gorochov. Thailand: Petchabun, Nam Nao, 16°47'N, 101°27'O, 1000 m, S. Ingrisch; 13.ix.1989 – 14.ix.1989, S. Ingrisch, 1♂, Stridulation recorded by S. Ingrisch 0291XENO.WAV, mixed Oak-Pine forest , grassy undergrowth, Bamboo thicket [day collecting and night collecting following stridulation], identified Xenogryllus ululiu  by S. Ingrish, molecular sample XulTh ( ZFMK)GoogleMaps  . Loei, NamNao NP at night, 13(14.ix.1989, S. Ingrisch , 1♂, identified Xenogryllus ululiu  by S. Ingrish, molecular sample XulTh ( ZFMK)  . Cambodia: Kampong Spoe, northern part of Elefan mts [Dâmrei Mountains], Kiri-Rom National Park, 130 km NNE Sihanoukville, 300–500m, 27.ix–1.x.2003, A. Gorochov, M. Berezin, 1♂, molecular sample X21 - XulCam 2, 1♀ ( ZIN)  . Kaoh Kong, central part of Elefan mountains [Dâmrei Mountains], vill. Styeng-Chkhral (100 km NE of Sihanoukville), 300–500m, 27.viii–6.ix.2003, A. Gorochov, L. Anisyutkin, 1♂, molecular sample X20 - XulCam 1 (MNHN-EO-ENSIF4385), 1♂ ( ZIN)  . Campot , environs of  Sihanoukville (= Kampong Som ), 14–21.ii.1998, A.V. Gorochov, 1♀ ( ZIN)  . Sihanoukville, citi near Siam bay, environs, 22–26.VIII.2003, A. Gorochov, L. Anisyutkin , 1♂, molecular sample X19 - XulSi ( ZIN)  . China: Guangdong, Shenzhen District, Wutongshan Mt. , 21.ix.2014, coll. Zhang Tao, 5♂, 3♀, ( SNNU)  .

Type locality. Vietnam, Gia Lai, Kannack   .

Distribution. Vietnam, Thailand, Cambodia, Southern China.

Emended diagnosis. Species of average to large size, close to X. transversus  and X. maichauensis  in terms of shape and coloration, from which it differs by smaller size, mirror slightly wider than long (less rounded than in in X. transversus  and X. maichauensis  ), and male genitalia looking like a stockier version of that of X. transversus  , with pseudepiphallic lophi basally fused together ( Fig. 8HView FIGURE 8), with a sharp posterior apex and a strong dorsal hooklike expansion. In females, head larger than in other species, wider in dorsal view than rest of body.

Redescription. In addition to the characters of the genus, X. ululiu  has an average size and a light brown or golden brown coloration ( Fig. 2View FIGURE 2 I–L). Head ( Fig. 3View FIGURE 3 M–N): Fastigium slightly widened apically, as in X. transversus  and X. maichauensis  ( Fig. 4GView FIGURE 4); eyes rather small, restricted to the dorsal third of head in lateral view ( Fig. 3NView FIGURE 3). Pronotum dorsal disc with a wide median black longitudinal band, its lateral angles not carinated, with a thin yellow band underlined by a black line ventrally. Hind wings tail gray brown, near twice as long a pronotum.

Male. FW venation ( Fig. 5HView FIGURE 5): 1A forming a straight angle. Dark coloration anterior to 1A not including angle of file. Harp wide, with one short incomplete oblique vein and two complete ones slightly bisinuate. Mirror large, slightly wider than long, less rounded than in X. maichauensis  and X. transversus  , its inner margin curved as in these species. Apical field forming a triangle longer than wide, with 6–7 (n = 5) cell alignments.

Male genitalia ( Fig. 7View FIGURE 7 Q–R): Pseudepiphallic lophi stocky, basally fused together, with a sharp apex and a strong dorsal preapical expansion ( Fig. 8HView FIGURE 8). Rami strong, convergent apically. Ectophallic apodemes strong, lamellate apically. Ectophallic fold and endophallic sclerite almost fused, forming a long ventral gutter, trifurcate posteriorly and extended anteriorly between rami. Endophallic apodemes made of anterior lateral lamellas.

Female. Head larger than in male ( Fig. 2View FIGURE 2 K–L), wider than rest of body in dorsal view. Dorsal disc of pronotum almost rectangular, its posterior margin slightly bisinuate. FWs light brown, anterior dark spot small. Dorsal field with nine strong longitudinal veins. Subgenital plate with a wide, apical U-shaped indentation with sharp edges ( Fig. 9EView FIGURE 9). Ovipositor as long as FIII.

Female genitalia: Copulatory papilla small, conical, its apex rounded and sclerotized ( Fig. 11View FIGURE 11 K–L).

Life history traits. According to S. Ingrish who recorded the species’ call in Thailand, males of X. ululiu  sing at night in grassy undergrowth of mixed Oak-Pine forest or bamboo thicket ( Cigliano et al. 2018).

Calling song ( Figs 12EView FIGURE 12, 18View FIGURE 18). One male from Thailand was recorded by S. Ingrish at 21°C. The song consists of echemes during 566 ± 57 ms, with a period of 2041 ± 358 ms. Echemes are made of 4 or 5 syllables (m=5), with syllable duration = 108 ± 3.8 ms and syllable period = 120.3 ± 3 ms. Within echemes, the three starting syllables have a lower amplitude than the final 1–2 syllables. Dominant frequency is 4.8 ± 0.4 kHz and corresponds to the fundamental frequency of the spectrum.

Measurements. See Table 9.

ZIN

Russian Academy of Sciences, Zoological Institute, Zoological Museum

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Gryllidae

Genus

Xenogryllus

Loc

Xenogryllus ululiu Gorochov, 1990

Jaiswara, Ranjana, Dong, Jiajia, Ma, Libin, Yin, Haisheng & Robillard, Tony 2019
2019
Loc

Xenogryllus ululiu

Jing, X. & Zhang, T. & Ma, L. 2018: 274
Robillard, T. & Grandcolas, P. & Desuter-Grandcolas, L. 2007: 1267
Gorochov, A. V. 1992: 10
Gorochov, A. V. 1990: 14
1992