Phanerotoma longivena, 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 longivena sp. nov. Figs 209 , 210-220

Type material.

Holotype, ♀ (RMNH), " Yemen (no. 3285), Ta’izz, light trap, 22-24.viii.1998, A. van Harten & Ahmad Ahwad, RMNH’99”. Paratype: 1♀, "Yemen (7501), Al Kadan, light trap, i.2003, A. v. Harten & T. Abdul-Haq, RMNH’03”.

Diagnosis.

Among the species with the third metasomal tergite of ♀ 1.8-2.0 × as long as second tergite and tergite straight laterally easily to separate because of the long vein r (ca. 1.2 × as long vein 3-SR (Figs 209 , 210 ); in other species 0.2-0.7 ×), the apical half of the pterostigma largely dark brown (entirely yellow or partly slightly darkened in other species), the inner tooth of mandible 0.8 × as long as apical tooth (Fig. 215 ; 0.1-0.3 ×), the eye in dorsal view ca. 3.4 × as long as temple (Fig. 217 ; 1 .7-2.5 ×) and in lateral view ca. 2.3 × as long as temple (Fig. 219 ; 1 .6-1.9 ×).

Description.

Female, holotype, length of body (excluding ovipositor) 4.7 mm; antenna 3.5 mm (but apical segment missing); fore wing 3.4 mm; visible part of ovipositor sheath 0.25 mm (setose part 0.15 mm).

Head. Width 1.5 × median length in anterior view and part of head above eye in lateral view 0.15 × height of eye (Fig. 219 ); antenna with 22 segments (but apical segment missing) and slightly longer than fore wing, segments gradually shortened, narrowed apically and apical segments moniliform (Fig. 220 ), third, fourth and penultimate segments 3.6, 3.0 and 1.4 × longer than wide in lateral view, respectively; area of stemmaticum coriaceous; OOL: diameter of posterior ocellus: POL = 10: 4: 5; length of eye 3.4 × temple in dorsal view (Fig. 217 ); frons rugulose-coriaceous medially, rugose laterally and without median carina; vertex and temple finely and densely rugose, and rather dull; face densely and finely rugose and without distinct median ridge or median carina; clypeus mostly smooth, rather shiny and three minute teeth medio-ventrally (Fig. 218 ); eye large in lateral view and 2.3 × (measured medially) temple (Fig. 219 ), in anterior view slightly longer than minimum width of face (Fig. 218 ); upper condyle of mandible above lower level of eyes (Fig. 218 ); malar space coriaceous and 0.4 × as basal width of mandible; lower tooth of mandible 0.8 × as long as apical tooth (Fig. 215 ).

Mesosoma (Figs 209 , 211 ). Length 1.5 × its width in lateral view; side of pronotum medially transversely rugose, dorsally superficially rugulose; mesoscutum finely rugulose with granulate background, densely setose; notauli slightly indicated; scutellar sulcus rather narrow and with eight short crenulae (Fig. 211 ); scutellum triangular, finely granulate, matt; metanotum without median carina anteriorly and obtusely protruding posteriorly; propodeum coarsely reticulate, without median and transverse carinae, latero-posteriorly slightly tuberculate. Wings. Fore wing 2.7 × longer than its maximum width; length of 1-R1 1.5 × as long as pterostigma; r issued far beyond middle of pterostigma and 1.2 × 3-SR; 2-SR straight and distally converging with posterior margin of pterostigma (Fig. 210 ); SR1 straight; 2-SR+M absent because of interstitial m-cu; parastigma large; 1-CU1 0.4 × as long as vein 2-CU1; r:3-SR:SR1 = 12:10:59; 2-SR:3-SR:r-m = 26:10:8; r-m vertical; 2-M slightly curved (Fig. 210 ). Hind wing: M+CU:1-M:1r-m = 27:24:10. Legs. Hind femur 4.8 × as long as wide and widened subbasally; middle tibia with ivory blister; inner spur of middle tibia 0.4 × its basitarsus; hind coxa mostly smooth and shiny; hind tibia moderately widened medially (Fig. 214 ).

Metasoma (Figs 212 , 213 ). Elongate elliptical in dorsal view, 2.2 × as long as wide and 1.7 × as long as mesosoma; first and second tergites coarsely longitudinally rugose and rugae with interconnections; third tergite 1.8 × longer than second tergite, in lateral view rather flat, densely reticulate-rugulose and medio-posteriorly truncate (Fig. 212 ), lateral lamella not protruding latero-apically, medium-sized and medio-apically indistinct; setose part of ovipositor sheath moderately wide (Fig. 213 ), 0.04 × as long as fore wing and visible part of ovipositor sheath 0.07 × as long as fore wing and 0.13 × metasomal carapace; hypopygium apically with acute triangle (Fig. 213 ), without apical spine and with rather short setae.

Colour. Brownish yellow; palpi, mandible (except dark brown teeth), tegula (paler than brownish humeral plate), legs (but hind tibia distinctly darkened apically and hind femur largely brownish) and metasoma ventrally pale yellow or ivory; apical half of flagellum brown; stemmaticum and scutellum medio-posteriorly dark brown; pterostigma dark brown with large pale yellowish basal spot and white near apex (Fig. 210 ); wing membrane slightly infuscate; parastigma (but yellowish anteriorly) and vein 1-M dark brown.

Male.

Unknown.

Variations.

Paratype: Very similar to holotype, length of fore wing of ♀ 3.1 mm; antenna of ♀ with 23 segments; metanotum with median carina anteriorly; propodeum weak irregular transverse carina; third tergite 1.8 × longer than second tergite and medio-apically with medium-sized lamella.

Biology.

Unknown.

Distribution.

Yemen.

Etymology.

Named after the comparatively long vein r of the fore wing.

Figures

Figure 1. Phanerotoma angusticrus van Achterberg sp. nov., ♀, holotype, habitus lateral.

Figure 209. Phanerotoma longivena van Achterberg, sp. nov., ♀, holotype, habitus lateral.

Figures 210 - 220. Phanerotoma longivena van Achterberg, sp. nov., ♀, holotype 210 wings 211 mesosoma dorsal 212 first-third metasomal tergites dorsal 213 metasoma lateral 214 hind leg, lateral 215 mandible ventral 216 antenna lateral 217 head dorsal 218 head anterior 219 head lateral 220 apical half of antenna (apical segment missing) lateral.