Anurogryllus (Urogryllus) minimus, Горохов, 2019
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publication ID |
https://doi.org/ 10.33910/2686-9519-2019-11-4-279-308 |
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persistent identifier |
https://treatment.plazi.org/id/EC70EF23-FFF6-FFDD-FF18-BDA0DEA08A3B |
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treatment provided by |
Felipe |
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scientific name |
Anurogryllus (Urogryllus) minimus |
| status |
sp. nov. |
Anurogryllus (Urogryllus) minimus View in CoL sp. nov.
( Figs 31–33 View Figs 13–52 , 63, 64 View Figs 53–64 , 74–76 View Figs 65–76 , 106 View Figs 100–119 )
http://zoobank.org/NomenclaturalActs/ AABE1516-6A9A-4F78-B423- 254D22417DA5
Material. Holotype — male, Mexico, Chiapas State, ~ 130 km NW of Tapachula City, environs of Ejido Las Golondrinus Vill. near El Triunfo Reserve , 800–1000 m, secondary forest, 13– 17.05.2006, A. Gorochov & M. Berezin ( ZIN) . Paratypes: 1 male, 1 female, same data as for holotype ( ZIN) .
Description. Male (holotype). General appearance as in both previous species described here ( Fig. 63 View Figs 53–64 ), but body distinctly smaller. Colouration brown with following marks: head in upper half almost black, but ocelli yellowish, palpi and small spots under lateral ocelli light brown, and vertical area un- der median ocellus as well as antennae brown; pronotum dark brown to blackish with a pair of reddish brown spots on disc; legs with light brown coxae, reddish brown rest parts, and blackish dorsal denticles on hind basitarsus; tegmina with dorsal field having dark brown basal area and light brown (semitransparent) rest part except for brown apical area and region of chords, and with lateral field having whitish stripe along proximal two thirds of costal edge, light brown apical part of thid field and reddish brown three dorsal longitudinal veins; sternites brown to dark brown with yellowish stripe along each posterior edge of five posterior sternites; abdominal tergites dark brown with similar yellowish stripes; small lateral parts of tenth abdominal tergite and proximal part of genital plate almost dark brown. Head with rostrum between antennal cavities ~1.4 times as wide as scape; fore tibia with outer tympanum only (this tympanum approximately as in previous congeners in shape); hind tibia with 5–6 pairs of articulated dorsal spines; hind basitarsus with 6–7 outer and 6–7 inner dorsal denticles; tegmina reaching middle of fifth abdominal tergite, with two weakly curved oblique veins, moderately large and transversally triangular mirror having one arcuate dividing vein, normal diagonal vein that in contact with mirror in its medial half, short apical area having three distinct branches and widely rounded posterior edge ( Fig. 63 View Figs 53–64 , 106 View Figs 100–119 ), and lateral field almost lacking crossveins but having 7–8 almost parallel longitudinal veins and one short branchlet near apex of Sc stock; genitalia as in A. (U.) parvispeculum , but ectoparameres and rachis having their posterior parts somewhat narrower (for comparison see Figs 29, 30 and 32, 33 View Figs 13–52 ), and rami normal for this genus (i.e. fused with each other anteriorly; see Figs 68–70 and 74–76 View Figs 65–76 ).
Variations. Second male with six pairs of dorsal spines on each hind tibia and six inner dorsal denticles on each hind basitarsus, and with posterolateral epiphallic lobes slightly longer and narrower in profile (the latter individual difference even more significant than that between holotypes of both A. parvispeculum and this species; see Figs 70 and 76 View Figs 65–76 ).
Female. Colouration and external structure of body as in male paratype, but: tegmina reaching middle of first abdominal tergite, not in contact with each other, rounded in distal part, with six longitudinal veins in lateral field (these veins more or less as in male but slightly more arcuate and without branchlets) and 6–7 such veins in dorsal field (however, these veins somewhat less regular, and this field uniformly dark brown as well as with irregular crossveins); legs with hind basitarsus having 6–8 outer and 5–6 inner dorsal denticles. Genital plate and distal part of ovipositor practically indistinguishable from those of females of previous congeners, but ovipositor clearly shorter than hind femur.
Length in mm. Body: male 14–15.5, female 16; pronotum: male 2.6–2.8, female 3.3; tegmina: male 5.7–6, female 3; hind femora: male 8.5–9, female 10.3; ovipositor 8.5.
Comparison. The new species is most similar to A. (U.) toltecus , A. (U.) oaxaca and A. (U.) parvispeculum but distinguished from them by the following characters: mirror of male tegmina is less transverse than in A. toltecus (~1.2 times as wide as long; vs. ~1.8 times as wide as long), posterolateral epiphallic lobes are clearly wider in profile than in A. oaxaca , and male tegminal mirror is much larger than in A. parvispeculum .
Etymology. This species’ name is the Latin word “minimus ” (minimal), because this cricket is small for the genus Anurogryllus .
| ZIN |
Russian Academy of Sciences, Zoological Institute, Zoological Museum |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.