Phanerotoma ejuncida, Achterberg, 2021

Achterberg, Cornelis van, 2021, The tribe Phanerotomini (Hymenoptera, Braconidae, Cheloninae) of the Arabian Peninsula, with special reference to the United Arab Emirates and Yemen, ZooKeys 1014, pp. 1-118 : 1

Phanerotoma ejuncida sp. nov. Figs 82-84 , 85-95

Type material.

Holotype, ♀ (RMNH), " United Arab Emirates, Wadi Wurajah Farms (10802), light trap, 8-15.iii.2009, 25°5'N, 56°13'E, A. v. Harten, RMNH’09”. Paratypes: 2♀: Idem, 15.i.-22.ii.2009; 1♀: Idem, 22.ii.-2.iii.2009; 2♀, 1♂: "United Arab Emirates, NARC near Sweihan (1245), light trap, 28.iii.-2.iv.2005, 24°24'N, 55°26'E, A. v. Harten, RMNH’06”; 1♂: Idem, 20-30.iv.2005.

Diagnosis.

Third tergite 1.5-1.8 × as long as second tergite, curved laterally, densely sculptured, rather dull and convex, its posterior lamella wide and truncate medio-apically (Fig. 87 ); subapical antennal segments somewhat serrate in lateral view because of small subapical protuberances, sixth segment from apex narrowed basally and subapically widened and subapical segments rather long (Fig. 95 ); fourth antennal segment approx. 4.5 × as long as wide; ventral half of temple matt to slightly shiny, granulate, rugulose or striate; face nearly entirely densely sculptured and shiny; frons rugose; clypeus approx. as wide as face, intertentorial distance 4-5 × minimum distance between clypeus and eye ventrally, and very shiny (Fig. 91 ); vein r of fore wing non-linear with vein 3-SR (Fig. 85 ); OOL aciculate; vertex rather shiny (Fig. 92 ); vein 1-CU1 of fore wing short compared to long and strongly oblique vein cu-a (vein cu-a 1.6-2.2 × as long as vein 1-CU1; Fig. 85 ); hind femur of ♀ elongate (Fig. 89 ); tarsal claws slender; length of fore wing 3.0-4.1 mm.

Description.

Female, holotype, length of body (excluding ovipositor) 5.1 mm; antenna 4.1 mm; fore wing 3.7 mm; visible part of ovipositor sheath 0.3 mm (setose part 0.2 mm).

Head. Width 1.5 × median length in anterior view and part of head above eye in lateral view 0.3 × height of eye (Fig. 93 ); antenna with 23 segments and 1.2 × longer than fore wing, segments slender and gradually shortened, segments of apical half with minute subapical protuberances and widened apically ( “pseudoserrate”; Fig. 95 ), six apical segments moniliform and narrowed basally (Figs 90 , 95 ), third, fourth and penultimate segments 4.4, 4.4 and 1.7 × longer than wide in lateral view, respectively; area of stemmaticum aciculate; OOL: diameter of posterior ocellus: POL = 19: 10: 5; length of eye 2.1 × temple in dorsal view (Fig. 92 ); frons with coarse curved rugae, shiny and without median carina; vertex transversely rugose and shiny; temple longitudinally rugose and shiny, convex; clypeus approx. as wide as face (intertentorial distance ca. 4.0 × minimum distance between clypeus and eye ventrally), convex, mostly smooth and shiny (Fig. 91 ); face shiny and distinctly rugose, with short indistinct median ridge; clypeus with three obsolescent teeth medio-ventrally (Fig. 94 ); eye large, strongly convex and in lateral view 2.2 × (measured medially) temple (Fig. 93 ), in anterior view 0.9 × minimum width of face; upper condyle of mandible near lower level of eyes (Fig. 91 ); malar space aciculate, shiny, and 0.3 × as basal width of mandible; lower tooth of mandible robust and 0.5 × as long as apical tooth (Fig. 94 ).

Mesosoma (Figs 82 , 86 ). Length 1.5 × its width in lateral view; side of pronotum distinctly rugose; mesosternum smooth and very shiny; mesoscutum finely reticulate-rugose and rather shiny; notauli slightly indicated anteriorly; scutellar sulcus wide medially and narrow laterally, with eleven carinae (Fig. 86 ); scutellum widely triangular, densely finely rugose (nearly up to posterior margin), convex and rather shiny; metanotum with short median carina anteriorly and truncate posteriorly; propodeum coarsely reticulate-rugose, without distinct median and transverse carinae, latero-posteriorly not tuberculate. Wings. Fore wing 3.0 × longer than its maximum width; length of 1-R1 1.2 × as long as pterostigma; r issued rather far beyond middle of pterostigma and 0.55 × 3-SR; distance between 1-R1 and wing apex 0.3 × 1-R1; 2-SR bent and distally subparallel with posterior margin of pterostigma (Fig. 85 ); SR1 curved; 2-SR+M absent because of narrowly antefurcal m-cu; parastigma large; 1-CU1 0.2 × as long as vein 2-CU1, cu-a strongly inclivous and approx. twice as long as 1-CU1; r:3-SR:SR1 = 11:20:77; 2-SR:3-SR:r-m = 34:20:11; r-m reclivous; 2-M weakly curved (Fig. 8 ). Hind wing: M+CU:1-M:1r-m = 25:23:10; cu-a narrow. Legs. Hind femur slender, 5.0 × as long as wide and hardly widened (Fig. 89 ); middle tibia with ivory blister; inner spur of middle tibia 0.5 × its basitarsus; hind coxa mostly smooth and shiny; hind tibia and basitarsus slender (Fig. 89 ); tarsal claws slender.

Metasoma (Figs 87 , 88 ). Oval in dorsal view, 1.9 × as long as wide and 1.4 × as long as mesosoma; first and second tergites finely and densely longitudinally rugose; third tergite 1.8 × longer than second tergite and laterally curved, in lateral view rather convex, densely reticulate-rugulose and medio-posteriorly truncate (Fig. 87 ), lateral lamella narrow, not protruding latero-apically and medio-apically truncate and wide; ovipositor sheath moderately widened apically (Fig. 88 ), its visible part 0.07 × as long as fore wing and 0.12 × metasomal carapace and setose part 0.05 × fore wing, setae erect and medium-sized or long; hypopygium apically acute, lacking an up curved triangle or apical spine (Fig. 88 ).

Colour. Brownish yellow (including tegulum); palpi, mandible (except dark brown teeth), clypeus, malar space, prothorax, legs (but apical half of middle tibia, hind femur largely, and hind tibia apically and basally brownish), first and second metasomal tergites and basal half of metasoma ventrally pale yellow or ivory; apical third of antenna, humeral plate, apex of ovipositor sheath and stemmaticum brown; pterostigma dark brown, but antero-basally and narrowly apically pale yellowish (Fig. 85 ); wing membrane subhyaline but below dark part of pterostigma and first subdiscal cell slightly infuscate; parastigma and vein m-cu largely pale yellow; apical half of metasoma, veins 1-M, basal half of 2-CU1, r and 3-SR of fore wing rather dark brown.

Male.

Similar to female (including antenna: Fig. 84 ), but hind femur moderately widened (3.3-3.5 × as long as wide; Fig. 83 ); vein r and pterostigma largely pale yellowish; third tergite brownish and 1.5-1.7 × as long as second tergite.

Variations.

Length of fore wing 3.0-4.1 mm; third tergite 1.5-1.8 × longer than second tergite; vein 1-R1 of fore wing 1.1-1.2 × as long as pterostigma; vein 1-M of fore wing varies from pale yellow to brownish; vein cu-a of fore wing 1.6-2.2 × as long as vein 1-CU1.

Biology.

Unknown.

Distribution.

United Arabian Emirates.

Etymology.

Named after its slender hind femur (ejuncidus is Latin for slender).

Figures

Figures 82 - 84. Phanerotoma ejuncida van Achterberg, sp. nov., ♀ holotype (82) and ♂ paratype (83, 84) 82 habitus lateral 83 hind femur and tibia lateral 84 apical half of antenna lateral.

Figures 85 - 95. Phanerotoma ejuncida van Achterberg, sp. nov., ♀, holotype 85 wings 86 mesosoma dorsal 87 first-third metasomal tergites dorsal 88 metasoma lateral 89 hind leg lateral 90 antennae lateral 91 head anterior 92 head dorsal 93 head lateral 94 mandible ventral 95 apical third of antenna lateral.

Figures 2 - 12. Phanerotoma angusticrus van Achterberg, sp. nov., ♀, holotype 2 wings 3 mesosoma dorsal 4 first-third metasomal tergites dorsal 5 metasoma lateral 6 hind leg lateral 7 mandible ventral 8 head dorsal 9 head anterior 10 head lateral 11 antenna lateral 12 apical third of antenna lateral.