Atrusca vasta ( Kinsey, 1936 )

Atrusca vasta ( Kinsey, 1936)

Figs 600–627 View FIGURES 600–605 View FIGURES 606–609 View FIGURES 610–613 View FIGURES 614–619 View FIGURES 620–623 View FIGURES 624–627

Cynips View in CoL ( dugesi ) vasta Kinsey, 1936: 141 , female, gall.

Atrusca vasta (Kinsey) : Weld 1952: 316.

Cynips View in CoL ( dugesi ) vulgata Kinsey, 1936: 143 , female, gall, syn. nov. herein.

Atrusca vulgata (Kinsey) : Weld 1952: 316.

Types examined. HOLOTYPE female Cynips View in CoL ( dugesi ) vasta “Tula 22N Tams. 6100’, Mex. Gall 1.20.32, 72 fms. 2.16.32.”, “ Q. intricata View in CoL + Q. Pringlei, Kinsey View in CoL coll.”, red “ Cynips vasta , Holo- Paratype ”. HOLOTYPE female Cynips View in CoL ( dugesi ) vulgata “S. Luis Potosi 15W S.L.P. 8000’, Mex. Gall 11.30.31, 24 fms. 2.20.32.”, “ Q. potosina, Kinsey View in CoL coll.”, red “ Cynips vulgata , Holo- Paratype ”. Both types are deposited in AMNH, NYC, examined by GM. For Cynips View in CoL ( dugesi ) vasta : three PARATYPE females “Tula 22N, Tams 6100’, Mex., galls 1.20.32., 72 females 2.16.32.”, “Q. intricate+ Q.pringlei Kinsey View in CoL coll.” red label “ Cynips vasta Paratype ”, deposited in the general collection in AMNH, NYC, examined by GM. For Cynips View in CoL ( dugesi ) vulgata : two PARATYPE females “St. Luis Potosi 15W, S.L.P. 8000’, Mex., galls 11.30.31., 24 females 2.20.32.”, “ Q. potosina Kinsey View in CoL coll.” red label “ Cynips vulgata Paratype ”, deposited in the general collection in AMNH, NYC, examined by GM.

Diagnosis. Atrusca vasta belongs to the couplet characterized by a reddish brown body color, lacking dark stripes in the mesoscutum, the OOL more than twice as long as the diameter of the lateral ocelli, exhibiting fore wings with a complete and conspicuous venation, the Rs vein of radial cell being arcuate, the smooth surface between the noatuli in the posterior half of the mesonotum, the entirely rugose mesoscutellum, the mesopleuron and speculum sculptured in varying proportions, exhibiting smooth areas, without any linear sculpture and with or without piliferous points, and the ventral spine of the hypopygium is setose, with setae extending beyond the apex of the spine, as in A. oriens . Atrusca vasta differs from A. oriens by the pronotum exhibiting distinct rugae or carinae; the mesopleuron displaying piliferous points; and the short radial cell, around 1.6× as long as broad, while in A. oriens the lateral sides of the pronotum are delicately alutaceous, without linear elements or with very weak and short rugae between coriaceous sculpture; the mesopleuron lacks piliferous points; and the radial cell is relatively long, around 2.1× as long as broad.

Re-description. Asexual female ( Figs 600–612 View FIGURES 600–605 View FIGURES 606–609 View FIGURES 610–613 , 614–626 View FIGURES 614–619 View FIGURES 620–623 View FIGURES 624–627 ). Head, antenna, legs uniformly reddish brown, mesoscutum with slightly darker stripes along anterior parallel and parapsidal lines; metasoma reddish brown with darker posterior band on second metasomal tergite.

Head quadrangular in frontal view, alutaceous, with sparse white setae, denser on lower face, 1.3× as broad as high and slightly narrower than mesosoma in frontal view, 2.0–2.1× as broad as long in dorsal view. Gena alutaceous, very slightly broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, without striae; malar sulcus absent; eye 2.4× as high as height of malar space. Inner margins of eyes slightly diverging ventrally. POL 1.5× as long as OOL; OOL 2.2× as long as diameter of lateral ocellus and 1.9–2.1× as long as LOL; all ocelli ovate, of same size. Transfacial distance 1.3–1.4× as long as height of eye and 1.6–1.7× as long as height of lower face; diameter of antennal torulus 1.7× as long as distance between them, distance between torulus and eye very slightly longer than diameter of torulus; lower face delicately coriaceous, shining along eyes, rugose in area below toruli, with dense white setae, without striae; slightly elevated median area delicately rugose, shining, without setae. Interocellar area not elevated above head in frontal view. Clypeus impressed, uniformly delicately rugose, rectangular, broader than high, with few long setae; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, epistomal sulcus and clypeo-pleurostomal line broad, well impressed. Frons and interocellar area alutaceous-reticulate, without striae, with few short setae, with small rounded smooth, shining area below central ocellus. Interocellar area elevated above head in frontal view. Vertex, occiput alutaceous, postocciput, postgena smooth, shining, with sparse white setae; posterior tentorial pit large, ovate, area below impressed; occipital foramen slightly higher than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which are not united, run parallel towards occipital foramen, postgenal bridge anteriorly broader as posteriorly, as broad as width of occipital foramen. Antenna as long as head+mesosoma, with 12 flagellomeres, pedicel as long as broad, F1 as long as scape+pedicel and 1.3–1.4× as long as F2; F2 1.2–1.3× as long as F3; F3 equal or slightly longer than F4, subsequent flagellomeres till F7 progressively shorter, F8=F9, F10=F11, F12 as long as or 1.5× as long as F11; placodeal sensilla on F2–F12.

Mesosoma 1.3× as long as high, with sparse short white setae. Pronotum laterally coriaceous-reticulate, with short parallel transverse striae; propleuron smooth, shining. Mesoscutum alutaceous-reticulate, smooth shining only in between notauli in posterior half, with piliferous points and sparse white setae; slightly longer than broad (greatest width measured across mesoscutum at level of base of tegulae). Notaulus complete, deep, broad, with smooth, shining bottom, posteriorly broader and slightly converging; anterior parallel and parapsidal lines indistinct, indicated by smooth darker stripes; median mesoscutal line absent; parascutal carina narrow, smooth, reaching notaulus. Mesoscutellum uniformly rugose, elongated, slightly longer than broad, broadest part in posterior 1/3, posteriorly rounded, overhanging metanotum; mesoscutellar foveae transverse, broader than high, with smooth, shining bottom, separated by a narrow elevated central carina. Circumscutellar carina complete. Mesopleuron in anterior half sculptured, with piliferous points; speculum delicately coriaceous, rest of mesopleuron smooth, shining, with a few setae ventrally; mesopleural triangle smooth, shining, with some irregular striae and some setae; dorsal and lateral axillar areas smooth, shining, with dense setae; subaxillular bar smooth, shining, most posterior part higher than height of metanotal trough; metapleural sulcus reaching mesopleuron in upper 1/3 of its height, upper part of sulcus distinct. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, shining, without setae; central propodeal area smooth, shining, romboid, broadest part slightly below midheight of propodeum; lateral propodeal carinae strong, elevated, strongly bent outwards in posterior half; lateral propodeal area smooth, shining, with long dense white setae. Nucha with irregular rugae laterally, smooth, shining dorsocentrally. Tarsal claws toothed, with basal lobe.

Fore wing slightly longer than body, smaller than normal size, margin with long dense cilia, with slightly darker spots and stripes, veins dark brown, radial cell open, 1.6–1.8× as long as broad; second abscissa of Rs strongly curved distally; R1 and Rs nearly reaching wing margin; areolet triangular, indistinct, Rs+M inconspicuous, hardly traceable along entire length, reaching basalis below its mid height.

Metasoma as long as head+mesosoma, slightly longer than high in lateral view; second metasomal tergum extending 4/5 of metasoma length in dorsal view, with white setae anterolaterally, without band of micropunctures posteriorly; subsequent terga without micropunctures, without setae. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 5.0–5.6× as long as broad in ventral view, with setae ventrally which extend beyond apex of spine.

Body length 1.7–3.5 mm ( Kinsey 1936).

Gall ( Figs 613 View FIGURES 610–613 , 627 View FIGURES 624–627 ). The gall is similar to all galls of Kinsey’s bella and dugesi complexes. Mature galls globular, deep rosy brown tan, unspotted, up to 21 mm, in average 14 mm in diameter.

Biology. The asexual generation is only known to induce galls on leaves of Q. arizonica (= Q. sacame ), Q. chihuahuensis , Q. intricata , Q. jaralensis , Q. potosina , Q. pringlei , Q. rugosa (= Q. reticulata ), Q. undata . Galls mature in late autumn; adults emerge from Februray next year.

Distribution. Mexico: Aguascalientis, San Luis Potosi, Guanajuato, Queretaro, Tamaulipas.