Teasienna gibsoni, Mitroiu, 2017

Mitroiu, Mircea-Dan, 2017, Revision of world Austroterobiinae and Parasaphodinae (Hymenoptera: Chalcidoidea: Pteromalidae), parasitoids of giant scales (Hemiptera: Coccoidea: Monophlebidae), Zootaxa 4301 (1), pp. 1-63 : 41-44

Teasienna gibsoni sp. nov.

( Figs 100–110 )

Diagnosis. Both sexes: legs uniformly pale ( Fig. 100, 102 ); fore wing with distinct infumate cloud under marginal and stigmal veins ( Figs 102 , 110 ); body setation short (longest genal setae less than 1/5 length of tegula) and whitish ( Figs 103–105, 107 ); mesosoma length about equal to width; fore wing speculum absent ( Fig. 110 ).

Female: antenna ( Fig. 105 ) with clava white, rest of flagellum dark brown; scape slightly surpassing level of vertex; antenna only slightly clavate, clava at most 1.4× as wide as F1; proximal funicular segments quadrate, distal funicular segments slightly transverse.

Male: clava slightly lighter than rest of dark brown flagellum, tip whitish ( Fig. 106 ); scape almost reaching level of vertex.

The female’s white clava contrasting with dark funicular segments ( Fig. 105 ) makes T. gibsoni unique among all known Teasienna species. The males closely resemble those of T. eirene , differing mostly in the lighter clava ( Fig. 106 ) and longer scape.

Material examined. Type material. Holotype ♀ (deposited in CNC) [entire; on triangular card]. SOUTH AFRICA: ‘ S. Africa: Trans. 15 km. E. Klaserie, Guernsey Farm , 19-31.XII.1985, M. Sanborne’.

Allotype ♂. SOUTH AFRICA: ‘S. A.E. Trans . Guernsey Farm, 15 km. E. Klaserie, XII-19-31-1985, yellow mal., M. Sanborne’ ( CNC).

Additional paratypes. SOUTH AFRICA: 4♀, same information as holotype ( CNC) ; 12 ♀ and 1♂, same information as allotype; 1 ♀ ‘ South Africa: Transvaal, Graskop , 1500m, 11-19.XII.1985, W.R.M. Mason, MT’ ( CNC) ; 1 ♀ ‘ South Africa: Transvaal, Hongony , 28-31.XII.1985, W.R.M. Mason’ ( CNC) ; 1 ♀ ‘S. Africa: Transvaal, 15 km. E. Klaserie , 18-31.XII.1985, H.& A. Howden’ ( CNC) ; 1 ♀ ‘ South Africa: Transvaal, Kruger Nat. Park , 16-18.XII.1985, PT, M. Sanborne’ ( CNC) ; 3 ♂ ‘S. A.K.N.P. Skukuza , XII-12-15-1985, black mal., M. Sanborne’ ( CNC) ; 2 ♂ ‘ South Africa: Transvaal, Kruger Nat. Park , 12-15.XII.1985, M. Sanborne’ ( CNC) ; 1 ♂ ‘ South Africa: Transvaal, Kruger Nat. Park, Satara 15-18.XII.1985, S.&J. Peck’ ( CNC) .

Description. Female. Body length: 1.7–2.8 mm.

Colour. Head and most of mesosoma blackish, with weak, mainly greenish reflections ( Figs 103–105, 107 ); pronotum from yellowish-brown to dark brown ( Figs 105, 107 ); membranous area between pronotum and fore coxa whitish ( Fig. 108 ); propodeum brownish ( Fig. 109 ). Gaster brown, lighter ventrally ( Figs 100, 101 ). Eyes pale reddish-grey; ocelli whitish ( Figs 103, 104 ). Antenna ( Fig. 105 ) with scape pale yellow; pedicel brown; flagellum except clava mostly dark brown, F5 from light brown to dark brown, as dark (usually) or slightly lighter than preceding funicular segments; clava white. Mandibles yellowish, teeth reddish-brown ( Fig. 103 ). Legs pale yellow except for brown pretarsi ( Fig. 100 ). Fore wing ( Fig. 110 ) with large brownish cloud under parastigma, marginal and stigmal veins, reaching cubital fold; tegula yellowish-brown; venation brown dorsally, paler ventrally ( Fig. 110 ). Body setation whitish, wing setation brownish ( Figs 103, 105, 107, 110 ).

Sculpture. Head and mesosoma smooth to finely coriaceous-alutaceous ( Figs 103–105, 107 ); gaster smooth.

Structure. Head. Longest genal setae less than 1/5 length of tegula. Head in profile with face strongly convex at toruli level ( Fig. 105 ). Lower margins of toruli about level with lower eye margins ( Fig. 103 ). Scape slightly surpassing level of vertex ( Fig. 105 ). Antenna only slightly clavate, clava about 1.3× as wide as F1 (7.0:5.5) ( Fig. 105 ). Eyes broad oval, inner margins slightly diverging ventrally ( Fig. 103 ); eye in lateral view slightly inclined relative to vertical axis of head ( Fig. 105 ). Head width about 2.4× length in dorsal view (58:24) and about 1.3× height in frontal view (58:45). POL 1.2–1.5× as long as OOL (13:9). Eye height 1.25× length (25:20) and about 1.8× malar space (25:14). Scape length 1.2× eye height (30:25). Head width slightly longer than length of pedicel plus flagellum (58:55). F1 width 1.3–1.5× length (5.5:5.0); F5 width 1.4× length (7:5); clava length about 2.4× width (17:7).

Mesosoma. Scutellar spine small, hardly visible among dense setae ( Fig. 107 ). Propodeum smooth, median carina fairly strong ( Fig. 109 ). Fore wing ( Fig. 110 ) completely setose, without speculum; parastigma with hyaline break. Mesosoma length subequal to width (50:48), width about 1.3× height (48:36). Mesoscutum width 2.4× length (48:20). Mesoscutellum length about 0.9× width (20:23). Propodeum length 0.25× mesoscutellum length (5:20). Fore wing length about twice width (98:48). MV length 2.4× width (12:5); SV 1.4–1.7× MV (18:12); PV about 2.4× MV (29:12).

Gaster. Short ovate, from slightly longer to distinctly shorter than head plus mesosoma ( Figs 100, 101 ); length 1.2–1.5× width (79:55).

Male. Differs from the female mainly as follows. Body length: 1.7–2.1 mm. Clava light brown, lighter than funicular segments, extreme tip dirty white ( Fig. 106 ); pronotum dorsally darker. Scape slightly shorter, reaching level of vertex; flagellum covered with denser and longer setae, sensilla less conspicuous; clava symmetric, without visible microsetation area ( Fig. 106 ). Head width about 2.3× length in dorsal view and about 1.2× height in frontal view. POL 1.4–1.6× as long as OOL. Eye height 1.5× malar space. Head width 0.95× length of pedicel plus flagellum. F1 quadrate; F5 width 1.2–1.7× length; clava length about 2.3× width. Mesosoma length about 1.1× width, width about 1.2× height. Mesoscutellum length equal to width. Fore wing length about 2.1× width. MV length about 2.7× width; SV 1.6–1.9× MV; PV about 2.6× MV. Gaster shorter than head plus mesosoma ( Fig. 102 ), length 1.1–1.4× width.

Distribution. South Africa.

Biology. Unknown.

Etymology. Named in honour of Dr. Gary Gibson (CNC), for his contribution to the systematics of Chalcidoidea .

Figures

FIGURES 100 – 102. Teasienna gibsoni: 100, holotype ♀, habitus, lateral view; 101, holotype ♀, habitus, dorsal view; 102, allotype ♂, habitus, lateral view.

FIGURES 103 – 110. Teasienna gibsoni: 103, holotype ♀, head, frontal view; 104, holotype ♀, head, dorsal view; 105, holotype ♀, head, lateral view; 106, allotype ♂, antennae; 107, holotype ♀, mesosoma, dorsal view; 108, holotype ♀, mesosoma, lateral view; 109, holotype ♀, propodeum, dorsal view; 110, holotype ♀, fore wing.