Itapayos mikea 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 : 23-25

Itapayos mikea Barbosa & Azevedo , sp. nov.

( Figs 33 , 35–37 , 62 , 79, 80 )

Material examined. Holotype, 3. MADAGASCAR, Toliara Prov [ince], Lake Ranobe, [elevation] 30 m, 23°02.23’S, 43°36.39’E, 17–21.ii.2003, Frontier Wilderness Proj[ect], [collection code:] MGF 61, CASENT 2071426 ( CASC).

Description. Holotype ( Fig. 33 ). MALE. Body 3.28 mm. LFW 0.11 mm.

Colour. Scape, pedicel, mandible, palpi, trochanters, profemur, mesofemur, metafemur, protibia, mesotibia, metatibia and tarsi light castaneous; head, mesosoma , tegula, procoxa, mesocoxa and metacoxa orange; flagellum dark castaneous with first flagellomere light castaneous; metasoma dark castaneous with tergum 1 orange.

Head ( Fig. 35 ). Head as long as wide, globoid [in lateral view]. Malar space as long as VOL, convergent anteriorly. 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 inclined, 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, longer than others; flagellomeres long, cylindrical shape; first five antennal segments in ratio of about 25:14:19:17:17. Frons strongly foveolate. Eye small, round, hairy, its contour slightly protuberant. Ocellar triangle compact, with frontal angle acute; composed by ocelli very small; with ocellar fovea present, narrow. Temple profile divergent anterad, vertex convex, its corner rounded. Palpi rectangular, cylindrical. Hypostomal carina forming obtuse angle. Dorsal half of occipital carina present, high, with side polished; ventral half of occipital carina present, complete, low. LH 1 × WH. WF 1.3 × HE. WF 0.52 × WH. OOL 0.83 × WOT. VOL 0.5 × HE. Distance of posterior ocellus to vertex crest 3 × DAO.

Mesosoma ( Figs 36, 37 ). Pronotal disc 0.83 × as long as wide; sparsely foveolate; plate groove present, but incomplete; anterior slope inclined in profile; anterior margin convex, with transverse carina, with anterior corner rounded; trapezoidal shaped, with side straight; longitudinal pronotal furrow present, complete, shallow; posterior margin straight. Propleuron without epicoxal sulcus. Pleurosternum with epicoxal sulcus, foveolate. Mesoscutum foveolate, short; longitudinal mesoscutal furrow absent; notaulus complete, convergent posteriorly, deep, wide, polished; parapsidal furrow inconspicuous. Scutellar groove wide, fused with axila, arched, dilated at ends; scutoscutellar sulcus inconspicuous; scutellum short, coriaceous, plane, not touching propodeal disc; axila strigate, shallow. Metanotum overlapping lateral region of scutellum. Propodeal disc shorter than half width, with central fovea fused with propodeal triangle fovea; median carina complete; with 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 coriaceous; posterior carina failed medially; posterior spine of propodeum present, short, thin, divergent. Declivity of propodeum coriaceous, with median carina, without lateral carina. Lateral surface of propodeum coriaceous, without superior carina, without posterior carina. Mesopleuron coriaceous, with subtegular and subalar fovea wide and continuous with episternal furrow; mesopleural sulcus present, complete, foveolate; episternal furrow with inner margin striate.

Wings. Micropterous. Tegula separated of mesoscutum.

Legs. Metacoxa with dorsal spine, without 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 angled, and large.

Metasoma. 1.55 × longer than wide; tergum 1 with ventral region coriaceous, with lap of lateral margin, with sparse lateral pilosity; tergum 2 with dorsal region polished, with sparse 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. 62 ) wider than long; with hypopygial median stalk undivided; lateral margin parallel, and slightly convex; with posterior margin bilobate with median indentation, slightly concave, with lobate branch.

Genitalia ( Figs 79, 80 ). 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 slender, apex sparse hairy, inner margin straight. Cuspis birramous, with arms distinct; ventral arm surpassing dorsal arm apex, slender, and thin, with apex truncate; 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 divergent, with base straight.

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 longitudinal ridge between median and inner discal carina with and posterior spine divergent; the metasoma with tergum 2 with dorsal region polished. However I. mikea 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 with lateral margin coriaceous; the fore wing micropterous, 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 lateral margin followed by short striae; the fore wing macropterous. These are the new record to species of Itapayos, therewith we can confirm the validity of the genus.

Figures

FIGURES 33 – 34. 33. Itapayos mikea sp. nov., 3, holotype, habitus; 34. Pycnomesitius tanala sp. nov., Ƥ, holotype, habitus. Scale bars = 300 µm.

FIGURES 35 – 40. 35 – 37. Itapayos mikea sp. nov., 3, holotype. 35. Head in dorsal view; 36. Mesosoma in dorsal view; 37. Mesosoma in lateral view; 38 – 40. Pycnomesitius tanala sp. nov., Ƥ, holotype. 38. Head in dorsal view; 39. Mesosoma in dorsal view; 40. 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 79 – 88. Genitalia. 79, 80. Itapayos mikea sp. nov. 79. Ventral view; 80. Lateral view; 81, 82. Zimankos makoa sp. nov. 81. Ventral view; 82. Lateral view; 83, 84. Z. sakalava sp. nov. 83. Ventral view; 84. Lateral view; 85, 86. Pilomesitius madagascarensis Móczár. 85. Ventral view; 86. Lateral view; 87, 88. Zimankos madagascarensis (Móczár). 87. Ventral view; 88. Lateral view. Scale bars = 125 µm.