Neodiasta ecuadorensis (Fischer, 2006) Zhang & Achterberg & Tian & Tan, 2020

Zhang, Ruo-Nan, Achterberg, Cornelis van, Tian, Xiao-Xia & Tan, Jiang-Li, 2020, Review of the Bobekia - group (Braconidae, Alysiinae, Alysiini), with description of a new genus and a new subgenus, ZooKeys 926, pp. 25-51 : 25

Neodiasta ecuadorensis (Fischer, 2006) comb. nov. Figs 79-91

Phasmidiasta ecuadorensis Fischer, 2006: 628-629.

Type material.

Holotype: ♂ (BZL), "Ecuador: Tungurahua prov., Banos, 14.ii.2002, 1500 m, M. Halada", "♂ Holotype: Phasmidiasta ecuadorensis sp. nov., M. Fischer, det. 2005".

Diagnosis.

See genus diagnosis.

Description.

Holotype, ♂, length of body 4.3 mm, of fore wing 4.3 mm.

Head: Head moderately transverse and shiny, concave posteriorly (Fig. 88 ), width of head 1.8 × its lateral length; antenna incomplete, 27 segments remaining and segments with long bristly setae, third segment 0.8 × as long as fourth segment and 1.2 × wider than fourth segment in lateral view, length of third and fourth segments 2.7 and 4.2 × their width, respectively (Fig. 91 ); length of maxillary palp 1.8 × height of head; eye in dorsal view 1.6 × as long as temple (Fig. 88 ); frons largely flat in front of anterior ocellus and only behind antennal sockets with narrow depression (Fig. 88 ); vertex convex and very sparsely setose; OOL: diameter of ocellus: POL= 9:2:2; face 2.4 × wider than high, largely striate laterally, largely smooth medio-dorsally, moderately convex and with longitudinal convex median area (Fig. 87 ); clypeus 1.3 × wider than high, protruding, semicircular and nearly truncate medio-ventrally (Fig. 87 ); malar space virtually absent; mandible strongly widened dorsally and ventrally straight, but near third lobe-shaped tooth with minute lobe, dorsal tooth large and lobe-shaped, larger than similar ventral tooth, middle (= second) tooth curved, small compared to first tooth and robust; medial length of mandible 1.6 × its maximum width (Figs 85 , 90 ).

Mesosoma: Length of mesosoma 1.6 × its height; mesoscutum with lateral carina in front of tegulae distinct and crenulate; pronotal sides shiny and smooth but oblique groove crenulate anteriorly and sparsely crenulate posteriorly; epicnemial area depressed anteriorly and partly crenulate (Fig. 81 ); precoxal sulcus very wide, oblique, coarsely crenulate, but posterior 0.3 absent (except short depression above middle coxa; Fig. 81 ); remainder of mesopleuron smooth and largely glabrous except ventrally; pleural sulcus finely crenulate; episternal scrobe medium-sized and oblique; metapleuron largely smooth but with some rugae medially, with some long setae and deep pit anteriorly; mesosternal sulcus finely crenulate; pronope medium-sized (compared to length of pronotum in dorsal view), deep and nearly round (Fig. 88 ); notauli distinctly crenulate and wide, but posteriorly narrow and nearly smooth; medio-posterior depression of mesoscutum long and deep, smooth and up to level of notauli (Fig. 82 ); mesoscutum strongly shiny and smooth, largely glabrous; scutellar sulcus deep and wide, with one carina, narrowed medially and 2.4 × wider than its maximum length; scutellar disc weakly convex (but posteriorly rather bulging), largely glabrous and smooth (Fig. 81 ); metanotum hardly protruding and only anterior half with median carina; medio-longitudinal carina of propodeum coarse and only on anterior face of propodeum, connected to complete parallel-sided areola, posterior face smooth between carinae and dorsally crenulate-rugose except smooth anterior area (Figs 81-83 ).

Wings (Figs 79 , 80 ). Pterostigma very narrow elliptical (nearly parallel-sided), apically hardly differentiated from 1-R1 and vein r issued slightly behind middle of pterostigma; vein r 0.8 × width of pterostigma; r:3-SR:SR1 = 5:31:31; SR1 and 2-SR straight; cu-a just postfurcal; 3-CU1 much longer than CU1b; 2-SR:3-SR:r-m = 25:31:14; m-cu far postfurcal, converging to 1-M posteriorly; first subdiscal cell 4.3 × as long as wide; M+CU1 largely sclerotized. Hind wing: M+CU:1-M:1r-m = 34:45:16; m-cu distinct, curved and unsclerotized.

Legs: Hind coxa rugose dorsally and remainder largely smooth; tarsal claws rather slender, evenly curved and longer than arolium (Fig. 86 ); length of femur, tibia and basitarsus of hind leg 5.7, 12.0, and 9.6 × their width, respectively; hind leg densely setose; hind tarsus slender (Fig. 86 ) and slightly longer than tibia.

Metasoma: Length of first tergite 1.1 × its apical width, its surface coarsely longitudinally costate-striate, its dorsal carinae converging and meeting submedially (Fig. 83 ); dorsope deep and medium-sized (Fig. 83 ); basal 0.7 of second tergite entirely coarsely longitudinally striate; remainder of metasoma smooth; third tergite in lateral view flat.

Colour: Black or blackish brown; mandible, palpi, clypeus and second tergite laterally pale yellowish; legs (but hind tibia and all tarsi infuscate or dark brown), tegulae and basal half of metasoma ventrally brownish yellow; apical half of metasoma dark brown ventrally; face yellowish brown; propleuron posteriorly, orbita and temple reddish brown; pterostigma, second and third tergites dark brown and most veins brown; wing membrane subhyaline.

Figures

Figures 79 - 91. Neodiasta ecuadorensis (Fischer), ♂, holotype 79 fore wing 80 hind wing 81 mesosoma, lateral aspect 82 mesosoma, dorsal aspect 83 propodeum, first-third metasomal tergites, dorsal aspect 84 hind leg 85 mandible, full view of first tooth 86 outer hind claw 87 head, anterior aspect 88 head, dorsal aspect 89 head, lateral aspect 90 mandible, full view of third tooth 91 basal antennal segments.