Oxyina bidentata ( Willemse, 1925 )

Baba, Tajamul Hassan & Usmani, Hd. Kamil, 2021, A revision and first record of the genus Oxyina Hollis, 1975 (Acrididae: Oxyinae) from India, with description of a new species, Zootaxa 4985 (2), pp. 151-175 : 153-158

Oxyina bidentata ( Willemse, 1925)

( Figure 1 A–D , Figures 3 & 4 , Plates 1 & 2 )

Oxya bidentata Willemse, C. (1925) Revision der Gattung Oxya Serville ( Orthoptera , Subfamily Acridiodea , tribe Cyrtacanthacrinae ). Tijdschrift voor Entomologie, 68, 24. figures 16, 17

Oxya nitiula Walker ; Willemse, C. (1925) Revision der Gattung Oxya Serville ( Orthoptera , Subfamily Acridiodea , tribe Cyrtacanthacrinae ). Tijdschrift voor Entomologie, 68, 29. figure 26 (Misidentification)

Oxya nitiula Walker ; Chahal, B. S. & Sardah Singh. (1966) Field observations on the aggregation behaviour of Oxya nitidula Walker ( Orthoptera : Acrididae ). Plant Protection Bulletin, New Delhi, 17, 23. (Misidentification)

Oxya nitiula Walker ; Chahal, B. S. & Sardah Singh. (1967) Studies on Oxya nitidula Walker. Journal of Research, Punjab Agricultural University, 4, 88. (Misidentification)

Oxya nitiula Walker ; Cejchan, A. (1970) Beiträge zur Kenntnis der Fauna Afghanistans. Acridoidea, Orthoptera . Časopis Moravského Musea V Brně, 54, 246. (Misidentification)

Oxya bidentata Willemse ; Hollis, D. (1971) A preliminary revision of the genus Oxya Audinet-Serville ( Orthoptera : Acridoidea). Bulletin of the British Museum (Natural History) Entomology, 26, 328–330.

Oxyina bidentata (Willemse) ; Hollis, D. (1975) A review of the subfamily Oxyinae ( Orthoptera : Acridoidea). Bulletin of the British Museum (Natural History) Entomology, 31 (6), 228.

Material examined. INDIA: Kashmir: Anantnag: Hugam , 33.8029°N, 75.1962°E, 1♂, 2♀, 28.viii.2018, Tajamul Hassan, Sweeping net ; Pulwama: Awantipora , 33.9222°N, 75.0155°E, 1♂, 7.ix.2020, Mehdi Tahir, Hand-picked ; Pulwama: Malangpora, 33.8928°N, 74.983°E, 1♂, 08.ix.2019, Tajamul Hassan, Sweeping net ; Shopian: Balapora, 33.9212°N, 74.6538°E, 3♂, 3♀, 02-05.ix.2019, Tajamul Hassan, Sweeping net.

Identification: Light green in colour, hind femur ochraceous green; ♀ are larger and sturdy than ♂; antennae filliform, 22 or 23 segmented, in ♀ antennae relatively smaller than head and pronotum lengths together; tegmen well developed and exceeding well beyond the tip of abdomen.

♂ genitalia: Supra-anal plate nearly deltoid in shape, basilateral folds absent; cerci laterally flattened but conical with bifid apex, upper lobe slightly shorter than lower lobe; subgenital plate long and narrow, apical half somewhat triangular with rounded apex; epiphallus expansive, right angular in lateral view, plate-like bridge, ancorae strongly developed and hook like with acute apex, lateral plates long and often slightly bent inwards from outer margins, anterior projections of lateral plates rounded, posterior projections ridge-like, lophi hook-like and narrowly spaced; basal valves of aedeagus broad and flattened, apical valves short and obtuse; apodemes of cingulum long with a slight posterior invagination.

♀ genitalia: Subgenital plate long and broad with its surface completely flat, posterior margin trigonal bearing a long spine like process; cerci conical with subacute apex; supra-anal plate with wide apex; the dorsal and ventral valves of ovipositor bear sharp spines, posterior ventral basivalvular plate without spines; apical diverticulum of spermatheca long and coiled with two small subdiverticula giving it a trishula shape, apices bulged; preapical diverticulum inverted V shaped.

Geographical distribution: India: Kashmir, Afghanistan, Pakistan and Iran.

Morphometry of Oxyina bidentata :

Figures

FIGURE 1. A. Oxyina bidentata ♂, dorsal view; B. Same, lateral view; C. Oxyina bidentata ♀, dorsal view; D. Same, lateral view; E. Oxyina sinobidentata ♂, dorsal view; F. Same, lateral view; G. Oxyina sinobidentata ♀, dorsal view; H. Same, lateral view; I. Oxyina javana ♂, dorsal view; J. Same, lateral view; K. Oxyina javana ♀, dorsal view; L. Same, lateral view; M. Oxyina kashmira sp. n. ♀, dorsal view; N. Same, lateral view.

PLATE 1. Genitalia of Oxyina bidentata ♂. A. Phallic complex, ventral view; B. Epiphallus; C. Apex of aedeagus; D. Phallic complex, dorsal view; E. Cingulum, ventral view; F. Subgenital plate; G. Dorsal view of supra-anal plate and cerci; H. Phallic complex, lateral view; I. Aedeagus, lateral view. Explanation of abbreviations: Apd = apodemes of cingulum, Bp = basal valves of aedeagus, Ap = apical valves of aedeagus, Cr = cercus, Sp = supra-anal plate, Rm = rami of cingulum, Ac = arc of cingulum, Ppc = posterior process of cingulum, Ejs = ejaculatory sac, Ejd = ejaculatory duct, Fx = flexure, Zyg = zygoma of cingulum, Vpc = valvular plates of cingulum, A = ancorae, Apl = Anterior projections of lateral plates of epiphallus, Lp = Lateral plates of epiphallus, Pp = Posterior projections of lateral plates of epiphallus, B = bridge, L = lophi.

PLATE 2. Genitalia of Oxyina bidentata ♀. A. Ovipositor; B. Spermatheca; C. Dorsal view of supra-anal plate and cerci; D. Subgenital plate. Explanation of abbreviations: 1V = ventral valve of ovipositor, 2V = inner valve of ovipositor, 3V = dorsal valve of ovipositor, Apo = apodeme of ovipositor, Sd = subdiverticula of apical diverticulum, Ad = apical diverticulum, Prd = pre apical diverticulum, Sp = supra-anal plate, Cr = cercus.

FIGURE 3. Genitalia of Oxyina bidentata ♂. A. Phallic complex, dorsal view; B. Phallic complex, ventral view; C. Cingulum, ventral view; D. Phallic complex, lateral view; E. Aedeagus, lateral view; F. Epiphallus; G. Epiphallus, top view; H. Apex of aedeagus. Explanation of abbreviations:Apd = apodemes of cingulum, Bp = basal valves of aedeagus, Ap = apical valves of aedeagus, Zyg = zygoma of cingulum, Vpc = valvular plates of cingulum, A = ancorae, Apl = Anterior projections of lateral plates of epiphallus, Lp = Lateral plates of epiphallus, Pp = Posterior projections of lateral plates of epiphallus, B = bridge, L = lophi.

FIGURE 4. Structures of Oxyina bidentata ♀. A. Dorsal view, end of abdomen showing supra-anal plate, cerci and ovipositor; B. Dissected, dorsal view of supra-anal plate and cerci; C. Ventral view, end of abdomen showing subgenital plate; D. Ovipositor; E. Lateral view, end of abdomen; F. Spermatheca; G. Subgenital plate. Explanation of abbreviations: Sp = supra-anal plate, Cr = cercus, 1V = ventral valve of ovipositor, 2V = inner valve of ovipositor, 3V = dorsal valve of ovipositor, Apo = apodeme of ovipositor, Sd = subdiverticula of apical diverticulum, Ad = apical diverticulum, Prd = pre apical diverticulum.