Aclogryllus crybelos ( Nischk & Otte, 2000 )

Silva, Lúciene Gimaque Da, Martins, Luciano De Pinho, Pereira, Marcelo Ribeiro & Henriques, Augusto Loureiro, 2018, A new status for Aclogryllus Gorochov, 2009 (Phalangopsidae; Phalangopsinae; Paragryllini) with a new species from Brazilian Amazon, Zootaxa 4433 (1), pp. 101-110: 103-105

publication ID

https://doi.org/10.11646/zootaxa.4433.1.5

publication LSID

lsid:zoobank.org:pub:BC17773E-C202-4F2E-AD37-940AB0D19C3D

persistent identifier

http://treatment.plazi.org/id/B71C87C5-B64D-8B32-FF32-B6F6FBEDFCBB

treatment provided by

Plazi

scientific name

Aclogryllus crybelos ( Nischk & Otte, 2000 )
status

n. comb.

Aclogryllus crybelos ( Nischk & Otte, 2000)  n. comb.

( Figs. 1 View Figure , 2 View Figure )

http://lsid.speciesfile.org/urn:lsid: Orthoptera  .speciesfile.org:TaxonName:501200

Paragryllus crybelos Nischk & Otte, 2000: 242  ; figs. 10, 34–37; table 7.

Paragryllus (Aclogryllus) crybelos  ; Gorochov, 2009: 575; figs. 4(4–6), 5(4); Cigliano et al. (2017) (online database).

Additional information to the original description. Male genitalia ( Fig. 2 View Figure ): median epiphallic bridge (ep.b) short, four times wider than longer and with median portion of posterior margin showing a central notch ( Fig. 2A, D View Figure ). Hind lateral lobe of median epiphallic bridge (ep.l) with one thin projection, in dorsal and ventral views ( Fig. 2A, B, D, E View Figure : *ph), and sub-rounded in lateral view ( Fig. 2C View Figure : *ph). Guiding rod (g) with rounded apex, in dorsal and ventral views ( Fig. 2A, B, D, E View Figure ). Lateral epiphallic arm (ep.a) with external margin inward curved in its posterior third, in ventral and dorsal views ( Fig. 2A, B, D, E View Figure ); presence of one finger-shaped projection posteriorly directed in apex of lateral epiphallic arm ( Fig. 2A–F View Figure : *ap = apical projection of the lateral epiphallic arm); subapical projection (*sp) triangular-shaped with acuminate apex at the inner margin of the lateral epiphallic arm (ep.a), in ventral view ( Fig. 2B, E View Figure : *sp). Endoparameral apodeme (en.a) dorsally curved, in lateral view ( Fig. 2C, F View Figure ).

Geographic records. Ecuador: San Pablo de Kantesiya, Province Sucumbíos (0°15’S, 76°27’W) ( Nischk & Otte, 2000) and Eastern Plain, near the Lake “Lago Grande” on the river “Rio Cuyabeno” ( Gorochov, 2009).

Comments. Species of Paragryllus  and Aclogryllus  present very similar habitat and habitus. In both genera, the specimens are inhabitants of tree trunks and are rarely found in the ground ( Desutter-Grandcolas, 1992; Nischk & Otte, 2000; Gorochov, 2007). These characteristics were observed in all Paragryllina  genera: Aclogryllus  n. stat.; Benoistella Uvarov, 1939  ; Bolivacla Gorochov, 2014  ; Paragryllus Desutter, 1988  ; Rumea Desutter, 1988  and Silvastella Desutter-Grandcolas, 1992  ( Desutter-Grandcolas, 1992; Nischk & Otte, 2000; Gorochov, 2014). With the exception of Benoistella  and Bolivacla  , all other genera of Paragryllina  are found in Manaus municipality, A. manauensis  n. sp. type locality.

Paragryllina  comprise 24 species, of which only Aclogryllus crybelos ( Nischk & Otte, 2000)  n. comb. and Silvastella epiplatys ( Nischk & Otte, 2000)  have had their calling songs described. Two factors make it difficult to record the calling songs of Paragryllina  species. The first is related to the tree stratum occupied during stridulation, which is usually> 3m above the ground and sometimes in treetops ( Nischk & Otte, 2000; personal observation of second author). The second refers to the difficulty of obtaining stridulations from these individuals in the laboratory, which may be associated to conditions intrinsic to their stridulatory habitat that are difficult to simulate in captivity (personal observation of second author).

In this work we proposed to raise Aclogryllus  to genus status based on characteristics of external morphology and male genitalia. Aclogryllus  n. stat. has a simple supra-anal plate, without evident specializations ( Fig. 4H View Figure ), while Paragryllus  presents one pair of fine structures surpassing the tip of abdomen (see Desutter-Grandcolas, 1992: fig. 68). This structure is characterized as “appendices abdominaux” by Guérin-Méneville (1844), “lamelles dorsales” in Desutter-Grandcolas (1992) and “thin and long processes” by Gorochov (2007; 2009). Another useful external characteristic for distinguishing these genera is the condition of first internal apical spur of tibia III. In Aclogryllus  n. stat., this spur is rather narrow ( Fig. 1F View Figure and 4G View Figure , black arrow), being strongly swollen in Paragryllus  (see Desutter-Grandcolas, 1992: fig. 69; Gorochov, 2009).

Other conspicuous differences are found in the male genitalia. Aclogryllus  n. stat. has a very long guiding rod and lateral epiphallic arms, as well as short endoparameral apodemes. Additionally, the endoparameral apodemes are shorter than the lateral epiphallic arms and in Paragryllus  the reverse occurs.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Phalangopsidae

Genus

Aclogryllus

Loc

Aclogryllus crybelos ( Nischk & Otte, 2000 )

Silva, Lúciene Gimaque Da, Martins, Luciano De Pinho, Pereira, Marcelo Ribeiro & Henriques, Augusto Loureiro 2018

2018
Loc

Paragryllus crybelos

: 242

Loc

Paragryllus (Aclogryllus) crybelos

: 575