Neotriadomerus powerae Huber, 2017

Huber, John T., 2017, Eustochomorpha Girault, Neotriadomerus gen. n., and Proarescon gen. n. (Hymenoptera, Mymaridae), early extant lineages in evolution of the family, Journal of Hymenoptera Research 57, pp. 1-87 : 25-29

Neotriadomerus powerae Huber sp. n.

Figs 128 , 129 , 130-132 , 133-135 , 136-139 , 140-143

Type material.

Holotype female (ANIC) on slide (Fig. 130 ) labelled: 1. "Australia: Qld. Brisbane Forest Park, 27°25'04"S 152°49'48"E 29.xi-5.xii.1997, dry sclerophyll, N. Power, Mt". 2. " Neotriadomerus powerae Huber ♀ dorsal holotype".

Paratypes. 1 female, 3 males. AUSTRALIA. Queensland: Same data as holotype but 14-20.iii.1998 (1♀ and 1♂, CNC), 28.xi.1998 (1♂, ANIC), 26.ix-2.x.1999 (1♂, ANIC). The collector stated that the specimens were collected in a Malaise trap set across a creek bed running through the base of an occasionally flooded gully between two sections of dry sclerophyll.

Diagnosis.

Neotriadomerus powerae differs from other small (body length less than 2600) species of Neotriadomerus as follows: fore wing with cubital line extending to just proximal to base of parastigma (Fig. 132 ); fl2-fl7 each just over twice as long as wide, with at least 8 mps and clava with 6 mps on each segment (Fig. 131 ).

Description.

Female. Body length ≈ 1560 (holotype). Colour. Body (Fig. 128 ) almost uniformly dark brown; legs brown, with trochantelli, base and apex of femora and entire protibia, and base and apex of meso- and metatibiae, and tarsi except tarsomere 5 paler, almost white; tarsomere 5 brown. Head. Head width 363 (holotype). Antenna. Fl1 almost as long as fl2, with 8 mps; fl2 about equal to fl3 or following funicle segments except fl7 or fl8, with 8 mps; fl3-fl6 with 8 mps, fl7 and fl8 apparently with 9 or 10 mps. Clava with 18 mps, 6 on first, 6 on second and 6 on third segment (Fig. 131 ). Antennal measurements (n=1), length/width (ratio of flagellar segments): scape ≈ 138/44 (≈ 3.15), pedicel 54/43 (1.27), fl1 84/48 (1.77), fl2 88/43 (2.07), fl3 90/44 (2.06), fl4 88/42 (2.10), fl5 88/40 (2.19), fl6 89/40 (2.23), fl7 86/42 (2.05), fl8 82/43 (1.91); entire clava 151/47 (3.23), with segments 1-3 length [measured along dorsal margin] 50, 37, and 64. Mesosoma. Width 284, length 578, with 3 propodeal setae (Fig. 133 ). Wings. Fore wing length 1173, width 417, length/width 2.81, longest marginal setae 52. Hind wing length 940, width 130, longest marginal setae 62. Legs. Protibia with 5 short, thick pegs along its length and a transverse row of 4 abutting pegs apically (as in Fig. 53 ). Metasoma. Metasoma height in lateral view 270. Gaster length 865, about 1.5 × as long as mesosoma; gt1-gt7 lengths about 169: 106: 99: 113: 162: 170 (Figs 134 , 135 ) [measurement of a tergum excludes the telescoped portion inside another (more anterior) tergum]; hypopygium (difficult to see) extending posteriorly to level of apex of tergum 5. Ovipositor sheath length 1113, ≈ 2.73 × metatibia length (≈ 51), extending anteriorly to about level of apex of procoxa and extending posteriorly slightly beyond apex of gaster (Figs 134 , 135 ).

Male. Colour. As for female (Fig. 129 ). Head. Head (Figs 136 , 137 ) width 346 (n=1). Antenna. Measurements, length/width: scape 124/45, pedicel 49/43, flagellar segments: fl1 97/62, fl2 108/54, fl3 104/56, fl4 102/50, fl5 108/50, fl6 102/50, fl7 98/53, fl8 99/51, fl9 94/50, fl10 86/47, fl11 90/45; total flagellar length 1089; fl6 length/width 2.04, with 12 mps (Fig. 138 ). Mesosoma. Mesosoma length 610, about 1.24 × as long as metasoma length (494); propodeum with 3 propodeal setae (Fig. 140 ). Wings. Fore wing length (n=1) 1043, width 386, length/width 2.70, longest marginal setae 76; cubital line extending to just proximal to base of parastigma (Fig. 129 ). Hind wing length 834, width 132, longest marginal setae 62. Metasoma. Petiole length 13, width 29. Gaster length 468; gt1-gt5 with 1 long dorsal setae and 4 long lateral setae on each side and gt6 with about 5 long dorsal setae, 3 long lateral setae, and about 20 short lateral setae on each side (Fig. 142 ). Genitalia as in Fig. 143 .

Etymology.

The species is named after Narelle Power, who ran a Malaise trap for many months in Brisbane Forest Park.

Figures

Figure 128. Neotriadomerus powerae, paratype female habitus, dorsal (Brisbane Forest Park). Scale bar = 1000 μm.

Figure 129. Neotriadomerus powerae, paratype male habitus, lateral (Brisbane Forest Park). Scale bar = 1000 μm.

Figures 130 - 132. Neotriadomerus powerae, holotype. 130 type slide 131 head + antenna, anterior 132 wings. Scale bar = 500 μm.

Figures 133 - 135. Neotriadomerus powerae, holotype. 133 mesosoma, dorsal 134 mesosoma, lateral 135 mesosoma, median plane. Scale bar for 133 = 200 μm; 134, 135 = 500 μm.

Figures 136 - 139. Neotriadomerus powerae, male paratype (Brisbane Forest Park). 136 head, anterior 137 head, posterior 138 antenna 139 wings. Scale bar for 136, 137 = 200 μm; 138, 139 = 500 μm.

Figures 140 - 143. Neotriadomerus powerae, male paratype (Brisbane Forest Park). 140 mesosoma, dorsal 141 mesosoma, ventral 142 metasoma, dorsal 143 genitalia, dorsal seen through gaster. Scale bar = 200 μm.

Figures 50 - 55. Neotriadomerus spp. 50 N. darlingi male parastigma, dorsal 51 N. longissimus female parastigma, ventral 52 N. darlingi male stigmal vein, dorsal 53 N. longissimus female calcar, lateral 54 N. sp. female calcar, dorsolateral 55 N. sp. female pretarsus, dorsolateral. Scale bar for 50, 53, 54 = 50 μm; 51 = 100 μm; 52, 55 = 20 μm.