Stethynium maxwelli (Girault)

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2007, Paranaphoidea Girault 1913, Zootaxa 1596, pp. 1-111 : 57

Stethynium maxwelli (Girault) ( Figs. 280–283 )

Descriptive notes and measurements of the type species are given based on the holotype and a card-mounted specimen.

Body length 845 (critical point dried specimen). Colour brown, with posterior scutellum almost white, contrasting strongly with rest of mesosoma ( Fig. 283 ); antennal flagellum light brown; legs, scape and pedicel yellowish white. Eye grey, with a pink tinge. Fore wing ( Fig. 280 ) with a faint brown suffusion behind venation, along anterior and posterior margins and across wing submedially, thus delimiting an oval clear area in apical half and a clear area just beyond venation. Hind wing ( Fig. 280 ) with apical third and anterior margin having a faint brown suffusion.

Head with very indistinct sculpture, apparently almost smooth. Face laterally with about 15 setae in lower half between subantennal grooves and preoccipital sutures and medially with two setae between toruli; vertex with 2 setae behind hind ocelli and two well in front of them; occiput and gena with numerous, fairly long setae. Antenna with length proportions (in micrometers, from holotype) as follows: scape 82, pedicel 46, funicle segments 1–6 36, 35, 40, 30, 34, 30, entire clava 80. Longitudinal sensilla not clearly visible on any specimen but apparently funicle segments 1–6 with 1, 1, 2, 1, 2, 1 and claval segments 1–3 with 2, 2, 2.

Mesosoma with sculpture very faint engraved, cellulate sculpture at least on mesoscutum and anterior scutellum.

Wings. Fore and hind wing proportions as given in generic description.

Legs. Proportions of segments, from holotype (in micrometers, fore legs missing):

Middle leg: coxa 83, trochanter 51, femur 171, tibia 195, entire tarsus 149, tarsomeres 1–4 26, 41, 43, 37.

Hind leg: coxa 119, trochanter 75, femur 189, tibia 270, entire tarsus 165, tarsomeres 1–4 32, 58, 47, 32.

Metasoma. Gaster with fine, longitudinal reticulation on all segments. Gastral tergum 5 the longest ( Fig. 283 ). Gastral tergum 7 with a line of about 11, fairly conspicuous setae above ovipositor valves and about 7 setae laterally in front of cercus. Ovipositor 522 long, about 1.9 x as long as metatibia.

Type material. Holotype female ( QMB), examined. The holotype is broken into several parts under a piece of cracked, dirty coverslip on the same, broken slide as the type of Stethynium gladius (under its own coverslip piece). Label data are given in Dahms (1984).

Other material examined. QLD: 11.45S 142.35E, Heathlands , 25.iv–7.vi.1992, T . McLeod , Malaise #2, dump, open forest (2 females on slides, ANIC); Daintree Prov., i. 1999, D. Quicke, secondary forest (1 female on card, CNC) .

Three specimens of a second, smaller species of Parastethynium from Indonesia were examined that differs from the type species by the position of the placoid sensilla on the scutellum and its smaller size .

Australian species (1):

P. maxwelli (Girault, 1915 [228]: 162); Dahms, 1984: 801 (types). Comb. nov. from Stethynium . TL: Qld, Gordonvale.

Figures

FIGURES 280–284. Parastethynium maxwelli. Female (Qld, Heathlands, 11.45°S 142.35°E, 25.iv–7.vi.1992, T. McLeod) 280, fore- and hind wings; 281, antenna; 282, fore leg; 283, meso- and metasoma lateral; 284, head anterior.