Gonatopus alpinus ( Gourlay, 1954 )

Olmi, Massimo, Marletta, Alessandro & Guglielmino, Adalgisa, 2014, Revision of the Australian species of Gonatopus group 5 (Hymenoptera: Dryinidae), with description of a new species from the Society Islands, French Polynesia, Zootaxa 3895 (4), pp. 525-546 : 528-529

1. Gonatopus alpinus ( Gourlay, 1954)

( Figs 1–5 )

Neogonatopus alpinus Gourlay, 1954: 4 .

Dicondylus alpinus (Gourlay) : Olmi 1984: 1404; 1990: 790; 1991: 327; Valentine & Walker 1991: 35. Gonatopus alpinus (Gourlay) : Guglielmino & Olmi 1997: 251, 252; Olmi 2007a: 9; Olmi & Villemant 2009: 701; Guglielmino et al. 2013: 22, 27, 39.

Material examined. Types. Holotype, ♀: NEW ZEALAND: Nelson (NN), Beeby’s Knob, 4000’, ii.1929, E.S. Gourlay leg. ( AMNZ). Paratypes: same locality label as holotype, 3♀ ( AMNZ). Other material. NEW ZEALAND: AK (Auckland): Wattle Bay ( AMNH, AMNZ); Wattle Bay, Lynfield ( AMNZ); Maketu Stream ( AMNZ); Titirangi ( AMNZ); Auckland Domain, 40 m, 12–13.iii.2005, 25.v.1999, J.W. Early leg., 3♀ ( AMNZ); same locality label, 22.i.2005, 3.ii.2005, 21.ii.2005, 23.ii.2005, 6.iii.2005, 8.iii.2005, 26.iii.2005, 31.iii.2005, 23.iv.2005, 26.iv.2003, 29.iv.2003, 10.v.2003, 8.v.2005, S.E. Thorpe leg., 15♀, 1♂ ( AMNZ); Great Barrier Island, Little Windy Hill, 100 m, 18.xi–19.xii.2002, 20.i–25.ii.2003, 25.ii–19.iii.2003, 26.iii–30.iv.2003, 30.iv–8.vii.2003, 27.xi–18.xii.2003, K. Parsons leg., 6♀, 4♂ ( AMNZ); same locality label, 20.i–25.ii.2003, 1♀ ( MOLC); same locality label, 220 m, 21.ii–26.iii.2002, 21.xi–13.xii.2002, 10.xii.2001 – 18.i.2002, P. Sutton leg., 3♂ ( AMNZ); Great Barrier Island, Rosalie Bay, Benthorn Farm, 150 m, 2.xi–11.xii.2001, 11.xii.2001 – 18.i.2002, P. Sutton leg., 1♀, 1♂ ( AMNZ); Great Barrier Island, Mt. Hobson, Malaise trap, 21.i–22.ii.2003, 22.ii–29.iii.2003, K. Parsons leg., 5♂ ( AMNZ); same locality label, 21.i–22.ii.2003, 1♂ ( MOLC); Auckland City, Western Springs Park, 20.ii.2004, S.E. Thorpe leg., 1♀ ( AMNZ); Mt. Eden, Withiel-Thomas Park, 1.v.2005, S.E. Thorpe leg., 1♀ ( AMNZ); Waitakere Ra, Arataki, 27.iv.2000, 1♂ ( AMNZ); Waitakere Ra, Cascade Park, 23.iii.2000, 1♂ ( AMNZ); Wenderholm, 1.i.1984, litter, P.M. Hammond leg., 1♀ ( BMNH). MC (Mid Canterbury): Ribbonwood ( AMNZ); Nervous Knob, Craigieburn Forest ( AMNZ). MB (Marlborough): Marlborough Sounds, Stephens Island ( AMNZ). NN (Nelson): Appleby ( AMNZ). ND (Northland): Pandora ( AMNZ); Unuwhao ( AMNZ); Ahipara Plateau, 16.xii.1985, R.F. Gilbert leg., 2♂ ( AMNZ). Otago: Central Otago, Lindis Pass ( AMNZ). WO (Waikato): Cuvier Island, Old Radar Station, 180 m, 29.iii–5.iv.2000, J.W. Early & R.F. Gilbert leg., 1♂ ( AMNZ); Cuvier Island, Ridge Track, 120 m, 29.iii–5.iv.2000, J.W. Early & R.F. Gilbert leg., 2♂ ( AMNZ); same locality label, 100 m, 10–18.xi.1999, J.W. Early & S.E. Thorpe leg., 1♂ ( AMNZ); Cuvier Island, Wilson Peak, 100 m, 17–18.xi.1999, J.W. Early & S.E. Thorpe leg., 1♂ ( AMNZ); Cuvier Island, West Ridge, 160 m, 29.iii–6.iv.2000, J.W. Early & R.F. Gilbert leg., 1♂ ( AMNZ); Cuvier Island, Pumphouse Track, 120 m, 29.iii–6.iv.2000, J.W. Early & R.F. Gilbert leg., 1♂ ( AMNZ); Aldermen Islands, Middle Island, 0–10 m, 3.xii.2003, J.W. Early & R.F. Gilbert leg., 1♂ ( AMNZ).

Redescription. FEMALE. Apterous ( Fig. 2 ); length 2.2–4.1 mm. Head testaceous-reddish, occasionally darkened; antenna totally testaceous, occasionally brown, except segments 1–2 or 1–3 and 10 testaceous; mesosoma testaceous-reddish, occasionally darkened; metasoma testaceous-reddish or brown; legs testaceous, occasionally except coxae and clubs of femora darkened. Antenna clavate; antennal segments in following proportions: 11:7:18:11:9:7:7:7:6:10. Head ( Fig. 1 ) excavated, shiny, unsculptured; frontal line complete; occipital carina very shortly present behind posterior ocelli; POL = 1.5; OL = 2; OOL = 9; greatest breadth of posterior ocellus shorter than OL (1:2). Palpal formula 2/2. Pronotum ( Fig. 3 ) not crossed by transverse furrow or very slightly transversely impressed, shiny, hairless, unsculptured. Scutum shiny, sculptured by slight longitudinal striae, without lateral pointed apophyses. Metanotum shiny, transversely striate or unsculptured, not hollow behind scutellum, with sides protruding; lateral protrusions rounded ( Fig. 2 ). Meso- and metapleuron transversely striate, occasionally not striate. Meso-metapleural suture obsolete. Metathorax + propodeum shiny, with posterior surface transversely striate (occasionally not striate); anterior surface shiny, unsculptured. Protarsal segments in following proportions: 13:2:3:8:15. Enlarged claw ( Fig. 4 ) with one large subapical tooth and one row of 4–5 lamellae. Segment 5 of protarsus ( Fig. 4 ) with two rows of about 8–9 lamellae; distal apex with about 5–9 lamellae. Tibial spurs 1/0/1.

MALE. Fully winged; length 2.0–3.4 mm. Head black or brown, occasionally reddish; antenna brown, occasionally testaceous; mesosoma black, occasionally reddish; metasoma black, or brown, or reddish; legs testaceous, except metacoxa darkened. Antenna filiform, with segment 3 more than three times as long as broad (about 4.8); antennal segments in following proportions: 8:6:12:12:12:12:11:11:10:12. Head hairy, shiny, strongly punctate, occasionally unsculptured; occipital carina absent; POL = 7; OL = 4; OOL = 4; greatest breadth of posterior ocellus shorter than OL (3:4); temple distinct. Palpal formula 2/2. Scutum shiny, granulated. Notauli complete, posteriorly joint. Scutellum and metanotum shiny, finely punctate, unsculptured among punctures. Propodeum reticulate rugose. Forewing hyaline, without dark transverse bands. Dorsal process of paramere ( Fig. 5 ) long and with numerous papillae on distal half. Tibial spurs 1/1/2.

Hosts. Delphacidae ( Guglielmino et al. 2013) : in New Zealand: Nilaparvata myersi Muir and Sulix tasmani (Muir) (this record was attributed by mistake to Gonatopus zealandicus Olmi by Valentine & Walker (1991)).

Distribution. New Zealand.

Figures

FIGURES 1 – 5. Gonatopus alpinus. 1 – 3, holotype, ♀ (1, head, frontal view; 2, body, dorsal view; 3, mesosoma, lateral view); 4, chela, New Zealand, Beeby’s Knob; 5, genitalia of ♂, New Zealand, Nervous Knob. Scale bar 0.8 mm for 1, 0.9 mm for 2 and 3, 0.3 mm for 4, 0.16 mm for 5.