Itapayos antaimoro Barbosa & Azevedo

Barbosa, Diego N. & Azevedo, Celso O., 2012, Revision of Mesitiinae (Hymenoptera, Bethylidae) from Madagascar, with description of eleven new species, Zootaxa 3417, pp. 1-44 : 20-21

Itapayos antaimoro Barbosa & Azevedo , sp. nov.

( Figs 26 , 30–32 , 61 , 77, 78 )

Material examined. Holotype, 3. MADAGASCAR, Tulear Province, Andohahela Nat’l Park, Ihazofotsy Parcelle III, 24° 49.85’S, 46° 32.17’E, 28 Jan [uary]– 14 Feb [ruary] 2004, California Acad[emy] of Sciences, coll[ector]s: M. Irwin, F. Parker, R. Harin’Hala, elev[ation] 80 m, Malaise trap—in dry spiny forest, [collection code:] MA- 02- 21-46, CASENT 2083393 ( CASC).

Description. Holotype ( Fig. 26 ). MALE. Body 3.4 mm. LFW 2.21 mm.

Colour. Wings clear hyaline; scape, pedicel, mandible, palpi, procoxa, mesocoxa, metacoxa, trochanters, profemur, mesofemur, metafemur, protibia, mesotibia, metatibia and tarsi light castaneous; tegula and wing venation castaneous; head and mesosoma orange; flagellum dark castaneous with first flagellomere light castaneous; metasoma dark castaneous.

Head ( Fig. 30 ). Head as long as wide, globoid [in lateral view]. Malar space as long as VOL, parallel. Mandible with three sharpened apical teeth, equally wide in your extension; lower margin straight; lower tooth longer than immediately upper teeth, lower tooth wider than others. Clypeus with median lobe delimitated, quadrate; lateral lobe absent; median clypeal carina arched, complete, straight shape [in dorsal view], above torulus. Intertorular distance less than torulus diameter. Antenna with conspicuous pubescence, erect, sparse, medium; scape slightly curved, thickening apicad; pedicel longer than wide, caliciform; first flagellomere longer than pedicel, as long as others; flagellomeres long, cylindrical shape; first five antennal segments in ratio of about 31:16:20:17:17. Frons strongly foveolate. Eye small, round, hairy, its contour protuberant. Ocellar triangle compact, with frontal angle acute; composed by ocelli small; with ocellar fovea present, narrow. Temple profile divergent anterad, vertex convex, its corner rounded. Palpi caliciform, cylindrical. Hypostomal carina forming obtuse angle. Dorsal half of occipital carina present, high, with side foveolate; ventral half of occipital carina present, complete, high, with side foveolate. LH 1 × WH. WF 1.43 × HE. WF 0.57 × WH. OOL 0.75 × WOT. VOL 0.6 × HE. Distance of posterior ocellus to verte× crest 2.33 × DAO.

Mesosoma ( Figs 31, 32 ). Pronotal disc 0.7 × as long as wide; sparsely foveolate; plate groove present, but incomplete; anterior slope straight; anterior margin convex, with transverse carina, with anterior corner angled; trapezoidal shaped, with side slightly concave; longitudinal pronotal furrow present, complete, shallow; posterior margin straight. Propleuron with epicoxal sulcus, shallow, polished. Pleurosternum with epicoxal sulcus, foveolate. Mesoscutum coriaceous, long; longitudinal mesoscutal furrow absent; notaulus complete, convergent posteriorly, deep, narrow, polished; parapsidal furrow incomplete, weakly impressed, parallel. Scutellar groove narrow, fused with axila, arched, dilated at ends; scutoscutellar sulcus conspicuous; scutellum short, coriaceous, plane, not touching propodeal disc; axila polished, shallow. Metanotum overlapping lateral region of scutellum. Propodeal disc shorter than half width, with central fovea fused with propodeal triangle fovea; median carina complete; without longitudinal ridge between median and inner discal carinae; sublateral and inner discal carina fused anteriorly; spiracle elliptical; inner discal carina complete; sublateral carina present; lateral carina present; lateral margin sculpture followed by short striae; posterior carina complete; posterior spine of propodeum present, short, thin, divergent. Declivity of propodeum coriaceous, with median carina, with lateral carina. Lateral surface of propodeum strigate, without superior carina, without posterior carina. Mesopleuron foveolate, with subtegular fovea continuous with episternal furrow; mesopleural sulcus present, complete, foveolate; episternal furrow with inner margin striate.

Wings. Macropterous. Tegula separated of mesoscutum. Fore wing with sparse pilosity; with costal cell very narrow and longitudinally folded; median cell shorter than submedian cell; basal vein straight; transverse median vein biangulate. Cubital vein present. Nebulous anal cubital vein absent; stigma subdeveloped, with distal margin truncate; radial vein slightly curved forward, giving raise at distal margin of stigma. Hind wing with costal vein long; with anal vein short; with one proximal hamuli; with three distal hamuli, evenly separated one from another.

Legs. Metacoxa with dorsal spine, with ventral expansion. Protibia short [1.5× first tarsomere length], with protibial spur long [longer than half length of first tarsomere]. Tarsi with tarsomeres 1–4 progressively shorter distad, cylindrical; tarsal claw with two sharpened teeth, curved posterad; arolium simple, apex straight, and large.

Metasoma. 1.32 × longer than wide; tergum 1 with ventral region coriaceous, with lap of lateral margin, without lateral pilosity; tergum 2 with dorsal region polished, without lateral pilosity, with ventral region polished; terga 3–6 with dorsal region polished, with ventral region polished; with posterior margin of tergites straight, with sparse setae at posterior margin of terga 2–6. Hypopygium ( Fig. 61 ) wider than long; with hypopygial median stalk undivided; lateral margin parallel, and slightly convex; with posterior margin bilobate with median indentation, concave, with lobate branch.

Genitalia ( Figs 77, 78 ). Genital ring protruding dorsally, with distal margin rounded and emarginated. Basivolsella fully outlined from basiparamere, without hairs. Paramere fully divided into two arms; dorsal arm of paramere as long as ventral arm, club-shaped, and with basal margin thin; ventral arm of paramere wide at apex, apex sparse hairy, inner margin concave. Cuspis birramous, with arms distinct; ventral arm aligned with dorsal arm apex, slender, and thin, with apex rounded; dorsal arm wide, and with apex rounded. Aedeagus slender; with pair of apical lobes, with apex not reaching paramere apex, lobes touching each other, with apical margin rounded, lateral of margin of basal portion convex; apodeme parallel, with base with outer margin excavated.

FEMALE unknown.

Remarks. This species is similar to Itapayos spinosus (Kieffer, 1906) by having the first flagellomere longer than pedicel; the pronotal disc sparsely foveolate; the propodeal disc with posterior spine divergent; the fore wing macropterous; the metasoma with tergum 2 with dorsal region polished. However I. antaimoro sp. nov. has the body orange; the head with frons strongly foveolate and without frontal sulcus; the pronotal disc with longitudinal furrow shallow; the propodeal disc without longitudinal ridge between median and inner discal carina; the fore wing clear hyaline, whereas I. spinosus has the body dark castaneous nearly black; the head with frons weakly foveolate and with frontal sulcus; the pronotal disc with longitudinal furrow deep; the propodeal disc with longitudinal ridge between median and inner discal carina; the fore wing twice-banded. These are the new record to species of Itapayos, therewith we can confirm the validity of the genus.

Figures

FIGURES 25 – 26. 25. Codorcas antanosy sp. nov., Ƥ, holotype, habitus; 26. Itapayos antaimoro sp. nov., 3, holotype, habitus. Scale bars = 300 µm.

FIGURES 27 – 32. 27 – 29. Codorcas antanosy sp. nov., Ƥ, holotype. 27. Head in dorsal view; 28. Mesosoma in dorsal view; 29. Mesosoma in lateral view; 30 – 32. Itapayos antaimoro sp. nov., 3, holotype. 30. Head in dorsal view; 31. Mesosoma in dorsal view; 32. Mesosoma in lateral view. Scale bars = 300 µm.

FIGURES 57 – 66. Hypopygium. 57. Anaylax mahafaly sp. nov.; 58. Clytrovorus bara sp. nov.; 59. C. merina sp. nov.; 60. C. zafimaniry sp. nov.; 61. Itapayos antaimoro sp. nov.; 62. I. mikea sp. nov.; 63. Zimankos makoa sp. nov.; 64. Z. sakalava sp. nov.; 65. Pilomesitius madagascarensis Móczár; 66. Z. madagascarensis (Móczár). Scale bars = 300 µm.

FIGURES 67 – 78. Genitalia. 67, 68. Anaylax betsileo sp. nov. 67. Ventral view; 68. Lateral view; 69, 70. A. mahafaly sp. nov. 69. Ventral view; 70. Lateral view; 71, 72. Clytrovorus bara sp. nov. 71. Ventral view; 72. Lateral view; 73, 74. C. merina sp. nov. 73. Ventral view; 74. Lateral view; 75, 76. C. zafimaniry sp. nov. 75. Ventral view; 76. Lateral view; 77, 78. Itapayos antaimoro sp. nov. 77. Ventral view; 78. Lateral view. Scale bars = 125 µm.