Eustochomorpha haeckeli Girault, 1915

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 : 2-4

Eustochomorpha haeckeli Girault

Figs 1-3 , 4-7 , 8-10 , 11-18 , 19-24 , 25-31

Eustochomorpha haeckeli Girault 1915: 156 (original description); Annecke and Doutt, 1961: 4, 14 (key, diagnosis); Dahms, 1984: 675 (holotype data); Lin et al., 2007: 33 (diagnosis in part, figs 129-131).

Type material.

Holotype female (QMBA) on slide labelled as shown (Fig. 1 ). The holotype (Fig. 2 ) is in uncleared in Canada balsam under 1 coverslip fragment between two other fragments and is poorly mounted more or less dorsoventrally with legs mostly folded up against body; left antenna with clava missing; right antenna (Fig. 3 ) detached beyond pedicel and positioned next to left (very faint) hind wing; other hind wing detached and its membranous portion hidden under head; right fore wing folded over and partly hidden by legs. Except for estimated body length, measurements of the holotype are not given in the species description below (my measurements were inaccurate when I borrowed the specimen).

Diagnosis.

Female. Among extant genera, E. haeckeli is distinguished from the first new genus described below, having a 2-segmented clava (3-segmented in the first new genus), and the ovipositor strongly exserted posteriorly beyond apex of gaster and not extending anteriorly under the mesosoma. It differs from the second new genus described below by the postmarginal vein shorter than the marginal vein (postmarginal vein longer than marginal vein in the second new genus), hypochaeta absent (hypochaeta present in the second new genus), and it differs from Borneomymar by its 2-segmented clava (1-segmented in Borneomymar ).

Description.

Female. Body length ≈1280 (critical point dried specimen, Stirling Range National Park). Colour. Body mainly brown (Fig. 4 ). Ocellar triangle, mesothorax and fine longitudinal line laterally on gaster darker brown. Base of gaster, especially basal sterna, legs except metacoxa and metafemur and apical tarsomere of all legs, flagellum and mouthparts except mandibles, and a faint transverse band at level of anterior ocelli lighter brown to white. Head. Width 202. Face with weak reticulate sculpture medially, stronger laterally (Fig. 5 ), with setae distributed as follows: 3 medial to torulus and 8 ventral to torulus, the 2 submedially above mouth margin the shortest. Vertex smooth anterior to mid ocellus and reticulate posterior to mid ocellus (Fig. 5 ), with 2 setae on anterior orbit lateral to transverse trabecula and 2 setae on dorsal orbit, in angle between eye and posterior section of supraorbital trabecula; ocellar triangle with 2 short setae lateral to mid ocellus and 1 short setae just posteromedial to lateral ocellus. Malar area apparently with 3 setae. Gena and occiput laterally longitudinally reticulate (Fig. 6a ), the reticulations on occiput shallower and transverse medially; occiput with 2 short setae submedially above occipital foramen, about 9 setae sublaterally and laterally; tentorium with two very short dorsal arms (Fig. 6b ). Antenna. Fl1-fl8 respectively with 0, 1, 2, 2, 2, 3, 3, 3 mps; clava 1 with 3 (4?) mps on first segment and 5 (6?) mps on second segment (Figs 3 , 7 ). Length/width measurements (n=1): scape 70/27, pedicel 55/26, fl1 33/18, fl2 32/20, fl3 39/25, fl4 40/25, fl5 44/25, fl6 42/25, fl7 42/24, fl8 42/26, clava 112/31 (first segment 42, second segment 69). Mesosoma. Width 200 and length 415. Pronotum with reticulate sculpture, with 3 short setae along posterior margin and 3 towards anterior margin. Propleuron faintly, longitudinally reticulate, with 2 seta about midway between anterior and posterior apices. Prosternum smooth, with 1 seta submedially almost at anterior margin and 1 setae laterally midway between anterior and posterior margins. Mesoscutum faintly longitudinally reticulate, with 1 setae along inner margin midway between anterior and posterior apices of notaulus, and 1 setae at lateral angle of side lobe. Anterior scutellum smooth, with 1 setae on lateral margins level with campaniform sensillum; frenum faintly reticulate. Axilla reticulate, and with 1 seta at anteromedian angle and 1 dorsally on longitudinally reticulate lateral panel; axillula smooth. Metanotum smooth medially, faintly reticulate laterally, with 2 short setae along anterior margin of relatively wide lateral panel. Propodeum smooth, with 2 propodeal setae close together. Wings. Fore wing length (n=1) 723, width 259, length/width 2.98, longest marginal setae 72. Marginal vein with about 11 microchaetae along its length; cubital line with few setae extending to level of distal apex of retinaculum. Hind wing length 685, width 57, longest marginal setae 68. Legs. Femora and tibiae of all legs with faint longitudinal reticulation. Protibia at mid length with 2 short pegs. Metasoma. Petiole 54 wide, 18 long. Gaster 212 wide, 597 long (to apex of apical tergum), with a few short setae on most terga, the terga difficult to distinguish from one another (anterior and posterior margins not distinct) and apparently with fine longitudinal wrinkles at least laterally; gt1 shorter than remaining terga, apparently with 1 lateral setae, gt2 and gt6 apparently with 1 submedian seta; gt3 - gt5 with about 4 submedian to sublateral setae in an irregular transverse row; gt7 acutely triangular, with a small apical seta. Cercus with the first two cerci subequal in length, the third the longest and the fourth the shortest (Fig. 25 ). Hypopygium weakly sclerotized (almost transparent) dorsally and extending beyond gastral apex by ≈180, with a submedian and lateral row of about 8 setae. Ovipositor length 1074, its exserted part (posterior to hypopygium apex) 360.

Male. Unknown.

Material examined.

Two females, collected in Malaise traps in combination with yellow pan traps underneath. AUSTRALIA. Western Australia: Yanchep National Park, 20-21.xii.1986, J.S. Noyes (1♀ on slide, CNC); Stirling Range National Park , 11-15.i.1987, J.S. Noyes (1♀ on point, BMNH) .

Figures

Figures 1 - 3. Eustochomorpha haeckeli, holotype female. 1 type slide, specimen under middle cover slip 2 body + legs 3 antenna. Scale bar = 100 μm.

Figures 4 - 7. Eustochomorpha haeckeli, female. 4 habitus (Australia, WA, Stirling Range National Park) 5 head, anterior; 6 a head, posterior 6 b tentorium 7 antenna. Scale bar for 4 = 500 μm; 5 - 7 = 100 μm.

Figures 8 - 10. Eustochomorpha haeckeli, female. 8, wings 9 mesosoma, dorsal 10 metasoma, dorsal. Scale bar = 200 μm.

Figures 11 - 18. Eustochomorpha haeckeli, female. 11 head + prothorax, lateral 12 head + prothorax, dorsal 13 base of antenna, lateral (right antenna) and ventral (left antenna) 14 apex of antenna 15 mesosoma, dorsal 16 mesosoma, posterolaterodorsal 17 mesosoma, lateral 18 base of wings + mesosoma, lateral (medial portion). Scale bar for 11, 12, 16 = 50 μm; 13, 14, 18 = 20 μm; 15, 17 = 100 μm.

Figures 19 - 24. Eustochomorpha haeckeli, female. 19 wings 20 a parastigma, ventral 20 b base of marginal vein, ventral 20 c apex of marginal vein, stigma + postmarginal vein, ventral 21 a parastigma, dorsal 21 b stigma, dorsal 22 gaster apex showing cerci, posterolaterodorsal 23 gaster apex showing cerci, dorsal 24 gaster apex, posterolaterodorsal. Scale bar for 19 = 200 μm; 20 a, 20 b, 21 b, 22 - 24 = 20 μm; 20 c, 21 a = 50 μm.

Figures 25 - 31. Eustochomorpha haeckeli, female. 25 gaster apex, lateral 26 ovipositor apex, dorsal 27 ovipositor apex, ventral 28 ovipositor + sheaths, lateral 29 apex of ovipositor + sheaths, lateral 30 ovipositor + sheaths, dorsal 31 apex of sheaths (one sheath folded over on itself). Scale bar for 25 = 50 μm; 26, 27 = 5 μm; 28, 30 = 100 μm; 29, 31 = 20 μm.