Sigmoleia peterjohnsi Jaschhof & Kallweit sp. n.

(Figs 17, 27, 69–70)

Diagnosis. This species differs from S. separata in several details of the male terminalia; the basal portion of the gonocoxites is larger and the ventrolateral processes are shorter (Fig. 69), the stalk of the gonostylus is not distinguished from the main portion (Fig. 70), and the tegmen apex is rounded (Fig. 69).

Description. Male. Head. Fig. 27. Nodes of antennal flagellomeres 1.1–1.2 times as long as wide. Maxillary palpus short; apical segment shorter than preceding segment.

Wing. Fig. 17. Length 1.3–2.2 mm. C ending clearly before wing apex. M-stem longer than M2. M-fork V-shaped. Ventral setae present on R1 and R5.

Terminalia. Sclerotized portions of tergite 9 interconnected by narrow membranous portion (Fig. 70). Basal portion of gonocoxites large, with few setae; ventrolateral processes as long as basal portion, strongly curved mesally and with apices approaching each other (Fig. 69). Stalk not distinguished from main portion of gonostylus, with 3–4 subbasal setae (Fig. 70). Tegmen apex rounded (Fig. 69).

Female. Head. Nodes of antennal flagellomeres 1.4 times as long as wide.

Wing. Length 1.8–2.0 mm.

Distribution and phenology. Endemic to NZ: SO (MC). Uncommon, confined to central South Island. Adults collected in beech forest in November/December and May.

Etymology. We name this species to honour Peter M. Johns, entomologist and research associate of the Canterbury Museum, Christchurch, who contributed to our study by providing a large number of specimens and adviced on many rewarding collection sites.

Types. Holotype. Male*, New Zealand, South Island, Mid Canterbury, Cass, Middle Bush, in forest of black beech Nothofagus solandri, 10 Dec. 1998, by Malaise trap, P.M. Johns (in NZAC). Paratypes. 7* males, 1* female, same loc. but 17 Nov. 1998 (in NZAC); 2* males, same loc. but 30 May 1998 (in SMTD); 2* males, 1* female, MC, Craigieburn F. P., Broken R. skifield road, in secondary beech forest, 4 Dec. 2001, by sweepnet, M. Jaschhof (in SMTD).

Other material. SO. MC: 3 males, same data as the holotype.