Anurogryllus (Urogryllus) parvispeculum, Горохов, 2019

Горохов, А. В., 2019, Преąваритеλьная Гипотеза Об Истории Поąсемейства Gryllinae (Orthoptera: Gryllidae) В Америке И Новые Таксоны Поąтрибы Anurogryllina И Роąа, Amurian Zoological Journal XI (4), pp. 279-308 : 290-292

Anurogryllus (Urogryllus) parvispeculum sp. nov.

( Figs 28–30 , 59, 60 , 68–70 , 103 )

http://zoobank.org/NomenclaturalActs/ A3977C4B-787F-41F3-9FC7-6020FD996ED1

Material. Holotype — male, Mexico, Oaxaca State, 35 km NNE of Santa Cruz Huatulco Town (10 km N of Xadani Vill.), 900–1000 m, secondary forest, 7– 11.05.2006, A. Gorochov & M. Berezin ( ZIN) . Paratypes: 1 male, 2 females, same data as for holotype ( ZIN) .

Description. Male (holotype). Colouration and structure of body very similar to those of A. (U.) oaxaca , but: head with brown (almost reddish brown) epicranium, legs almost not darkened in distal part of hind femur and in proximal part of hind tibia, tegmina with slightly darker (brown) most part of lateral field, and cerci almost uniformly brown; rostrum between antennal cavities slightly wider (~1.8 times as wide as scape); hind tibiae with seven inner and 6–7 outer dorsal spines which somewhat more stout than in A. oaxaca ; hind basitarsus with seven outer and 4–5 inner dorsal denticles; tegmina shorter, reaching middle part of third abdominal tergite, with two oblique veins, somewhat more straight diagonal vein and chords, very small mirror lacking dividing veins, barely shorter (than in A. oaxaca ) apical area lacking distinct longitudinal branches and having roundly truncate posterior edge, and seven longitudinal veins in lateral field only ( Figs 59 , 103 ); genitalia ( Figs 68–70 ) with posterolateral lobes of epiphallus distinctly wider in profile, with anteromedian epiphallic lobe as in Fig. 28 , with ectoparameres having two angular projections in apical part (medial projection longer than lateral one; Fig. 29 ), with apical sclerotized part of rachis rounded in ventral view ( Fig. 30 ), and with rami separated from each other by short semisclerotized interspace.

Variations. Second male with slightly light- er (light brown) most part of dorsal and lateral fields in tegmina (but basal area of dorsal field brown), as well as with seven outer dorsal spines on each hind tibia and six inner dorsal denticles on each hind basitarsus.

Female. General appearance ( Fig. 60 ) as in males, but one female with epicranium barely darker, tegmina in all females brown with slightly lighter veins as well as with light brown proximal part of dorsal field and longitudinal band along its lateral edge, tegminal distal part rounded and reaching posterior or middle parts of first abdominal tergite, dorsal tegminal field with 6–7 not very regular longitudinal veins and rather numerous irregular crossveins, lateral tegminal field with 7–8 almost regular and slightly arcuate longitudinal veins as well as with very sparse crossveins; other parts of body as in female of A. oaxaca but with genital plate having slightly deeper concavity of posterior edge.

Length in mm. Body: male 17–19, female 18–19.5; pronotum: male 3.5–3.8, female 3.8–4; tegmina: male 4.8–5.2, female 3.5–3.7; hind femora: male 10–11, female 11.6–11.9; ovipositor 11–11.5.

Comparison. The new species differs from all other similar congeners in the male tegminal mirror very small, male genitalia with rami almost not fused with each other, and additionally from A. oaxaca and A. nyctinomos Otte et Perez-Gelabert in posterolateral epiphallic lobes clearly wider in profile.

Etymology. This species name consists of the Latin prefix “parvi-” (small) and word “speculum” (mirror) in connection with small size of mirror in the male tegmina.

Figures

Figs 13–52. Structures of male genitalia in Anurogryllina and Brachytrupina, schematically: 13, 14 — Mexigryllus huatulco sp. nov.; 15, 16 — M. tuxtla sp. nov.; 17–20 — Anurogryllus (Urogryllus) oaxaca sp. nov.; 21–24 — A. (U.) mataracu sp. nov.; 25–27 — A. (U.) tamaulipas sp. nov.; 28–30 — A. (U.) parvispeculum sp. nov.; 31–33 — A. (U.) minimus sp. nov.; 34–39 — A. (U.) pantanal sp. nov.; 40–42 — A. (Pilosogryllus) fulvaster (Chop.); 43 — Phonarellus minor (Chop.); 44 — Cephalogryllus lifouensis Gor.; 45 — Sciobia lusitanica (Ramb.); 46 — Modicogryllus frontalis(Fieb.);47 — Tarbinskiellus portentosus (Drury); 48 — Geogryllus mezai Gor. et Izerskyy; 49 — Miogryllus sp. from Peru; 50 — M. sp. from Ecuador; 51 — Megalogryllus (Gigantogryllus) neotropicus (Gor.); 52 — M. (Megalogryllus) excellens sp. nov. Anteromedian lobe of epiphallus from above (13, 15, 17, 21, 24, 25, 28, 31, 34, 37, 40); ectoparamere from below (14, 16, completely; 18, 22, 27, 29, 32, 35, 38, 41, apical portion) as well as from below and slightly medially (43–52); apical part of rachis from below (19, 20, 23, 26, 30, 33, 36, 39, 42) Abbreviations: aml — apex of mesal lobe; as — apical sclerite; bml — base of mesal lobe, but without most part of this lobe (52) or only without its small part (49, 50); m — membrane between mesal lobe and posterodorsal sclerite; ma — membranous area between apical and proximal sclerites; ml — mesal lobe; pds — posterodorsal sclerite; ps — proximal sclerite; spl — spine-like process at apex of mesal lobe (47), at apex of proximal sclerite (52), and in place of their fusion (46, 48, 49, 50, 51)

Figs 53–64. Mexigryllus and Anurogryllus, body without distal part from above: 53, 54 — M. huatulco sp. nov.; 55, 56 — M. tuxtla sp. nov.; 57, 58 — A. (Urogryllus) oaxaca sp. nov.; 59, 60 — A. (U.) parvispeculum sp. nov.; 61, 62 — A. (U.) tamaulipas sp. nov.; 63, 64 — A. (U.) minimus sp. nov. Male (53, 55, 57, 59, 61, 63) and female (54, 56, 58, 60, 62, 64)

Figs 65–76. Anurogryllus, male: 65–67 — A. (Urogryllus) oaxaca sp. nov.; 68–70 — A. (U.) parvispeculum sp. nov.; 71–73 — A. (U.) tamaulipas sp. nov.; 74–76 — A. (U.) minimus sp. nov. Genitalia from above (65, 68, 71, 74), from below (66, 69, 72, 75) and from side (67, 70, 73, 76)

Figs 100–119. Mexigryllus, Anurogryllus and Megalogryllus: 100 — Mexigryllus huatulco sp. nov.; 101 — M. tuxtla sp. nov.; 102 — A. (Urogryllus) oaxaca sp. nov.; 103 — A. (U.) parvispeculum sp. nov.; 104 — A. (U.) pantanal sp. nov.; 105 — A. (U.) mataracu sp. nov.; 106 — A. (U.) minimus sp. nov.; 107 — A. (U.) tamaulipas sp. nov.; 108 — A. (U.) toltecus (Sauss.); 109 — A. (?) antillarum (Sauss.); 110 — A. (?) sp. (female of A. antillarum [?] according to Saussure); 111–114 — A. (Anurogryllus) carinatus sp. nov.; 115 — A. (A.) caraibeus abbreviatus subsp. nov.; 116 — Megalogryllus (Megalogryllus) clamosus Mesa et Garcia-Novo; 117 — M. (M.) molinai Chop.; 118 — M. (M.) angustulus sp. nov.; 119 — M. (M.) excellens sp. nov. Dorsal field of right male tegmen (100–104, 106–109, 116–119); posterior part of pronotum with visible parts of tegmina and mesonotum as well as with anterior part of metanotum, male (105); abdominal apex from side, female (111) and possibly male (110); distal part of epiphallus from side (112, 115); apex of both left ectoparamere (113) and rachis (114) from below. [109, 110 — after Saussure (1874) and 116 — after Mesa & Garcia-Novo (2004), modified; 117 — after photograph of holotype in Cigliano et al. (2019)]