Pseudolycoriella tewaipounamu, Köhler, 2019

Köhler, Arne, 2019, The genus Pseudolycoriella Menzel & Mohrig, 1998 (Diptera, Sciaridae) in New Zealand, Zootaxa 4707 (1), pp. 1-69 : 39-41

Pseudolycoriella tewaipounamu sp. n.

( Figs 20–24 , 43 )

urn:lsid:zoobank.org:act:NomenclaturalActs/ CC9D30E2-C277-42B6-9BB0-257662D26B46

Material studied. Holotype male. New Zealand: South Island , Southland , Otago Lakes , Fiordland NP, Eglinton Riv- er Valley, Deer Flat, Nothofagus forest, Malaise trap, 01– 20.12.2002, leg. M. & C. Jaschhof & U. Kallweit ( NZAC, SDEI-Dipt-0000956) . Paratypes: 6♂♂, same date and same locality as holotype (2x NZAC, SDEI-Dipt-0000952; 4x SDEI, SDEI-Dipt-0000964) . 4♂♂ same locality as holotype, Malaise trap, 04– 24.01.2002, leg. M. & C. Jas- chhof (2x NZAC; 2x SDEI) . 4♂♂ South Island , Buller, 5 km W Maruia Springs, mixed Nothofagus forest, Malaise trap, 26.11– 25.12.2001, leg. M. & C. Jaschhof (2x NZAC, SDEI-Dipt-0000988; 2x SDEI, SDEI-Dipt-0000942 & SDEI-Dipt-0000973) . 35♂♂, South Island , Buller , Ahaura, Granville State Forest, altitude 170–250 m, Nothofagus truncata forest, Malaise trap, 01.12.1994, leg. D. Hutcheson (17x NZAC, 18x SDEI) . 7♂♂ South Island , Buller , Maruia Forest, Shenandoah Saddle, altitude 500 m, Nothofagus forest, Malaise trap, 09.10– 03.11.2001, leg. M. & C. Jaschhof (3x NZAC, SDEI-Dipt-0000788, SDEI-Dipt-0000960 & SDEI-Dipt-0001179; 4x SDEI, SDEI-Dipt- 0000752, SDEI-Dipt-0000787, SDEI-Dipt-0001180 & SDEI-Dipt-0001181) . 3♂♂ same locality as previous, Ma- laise trap, 03– 25.11.2001, leg. M. & C. Jaschhof (1x NZAC, SDEI-Dipt-0001045; 2x SDEI, SDEI-Dipt-0001038 & SDEI-Dipt-0001044) . 1♂ same locality as previous, sweep net, 25.12.2001, leg. M.Jaschhof ( SDEI) . 2♂♂ South Island , Buller , Paparoa NP, 5 km E Punakaiki, Inland Pack Track, mixed podocarp/ Nothofagus forest, Malaise trap, 30.09– 05.11.2001, leg. M. & C. Jaschhof ( NZAC; SDEI) . 4♂♂ South Island , Buller, Rahu Scenic Reserve, 12 km NW Springs Junction, altitude 550 m, mixed Nothofagus /podocarp forest, Malaise trap, 27.11– 25.12.2001, leg. M. & C. Jaschhof (2x NZAC, SDEI-Dipt-0001481 & SDEI-Dipt-0001490; 2x SDEI, SDEI-Dipt-0001492 & SDEI- Dipt-0001493) . 1♂ South Island , Westland , Waiatoto, Kahikatea swamp forest, Malaise trap, 16.10– 20.11.2001, M. & C. Jaschhof ( SDEI) . 1♂ South Island , Westland , Westland NP, SE Gillespies Beach, mixed podocarp forest, Malaise trap, 14.10– 21.11.2001, leg. M. & C. Jaschhof ( SDEI, SDEI-Dipt-0001028) . 3♂♂ South Island , Queens- town Lakes , Otago Lakes , Mt Aspiring NP, Makarora River Valley near Cameron Creek Track, mixed Nothofagus / broadleaf forest, sweep net, 18– 19.12.2002, leg. M. Jaschhof (1x NZAC, SDEI-Dipt-0000513; 2x SDEI, SDEI- Dipt-0001506) . 2♂♂ South Island , Southland , Fiordland , Fiordland NP, Lake Gunn, Nothofagus forest, sweep net, 08.01.2002, leg. M. Jaschhof ( NZAC; SDEI) . 1♂ same locality as previous, Malaise trap, 01– 21.12.2002, leg. M. & C. Jaschhof & U. Kallweit ( SDEI) . 2♂♂ South Island , Southland , Fiordland, Fiordland NP, 3 km E Milford Sound, mixed podocarp/broadleaf forest, Malaise trap, 01– 21.12.2002, leg. M. & C. Jaschhof & U. Kallweit ( NZAC; SDEI) . 1♂ same locality as previous, sweep net, 21.12.2002, leg. M. Jaschhof ( SDEI) . 8♂♂ South Island , South- land, Fiordland , Fiordland NP, Hollyford River Valley, Moraine Creek Track, mixed podocarp/ Nothofagus forest, Malaise trap, 05– 24.01.2002, leg. M. & C. Jaschhof (4x NZAC, SDEI-Dipt-0000910, SDEI-Dipt-0000927, SDEI- Dipt-0000928 & SDEI-Dipt-0000934; 4x SDEI, SDEI-Dipt-0000879, SDEI-Dipt-0000881, SDEI-Dipt-0000907 & SDEI-Dipt-0000924) . 7♂♂ South Island , Southland , Otago Lakes , Fiordland NP, Hollyford River Valley S Divide Creek, mixed Nothofagus /broadleaf forest, Malaise trap, 06– 24.01.2002, leg. M. & C. Jaschhof (3x NZAC; 4x SDEI, SDEI-Dipt-0000994) . 1♂ South Island , Southland , Otago Lakes , Fiordland NP, Eglinton River Valley, op- posite Earl Mountain Tracks, Nothofagus forest, Malaise trap, 05– 24.01.2002, leg. M. & C. Jaschhof ( SDEI, SDEI- Dipt-0000871) . 3♂♂ same locality as previous, Malaise trap, 01– 21.12.2002, M. & C. Jaschhof & U. Kallweit (1x NZAC; 2x SDEI) . 7♂♂ South Island , Southland , Otago Lakes , Fiordland NP, Eglinton River Valley, 2 km N entrance Earl Mountain Tracks, Nothofagus forest, Malaise trap, 01– 21.12.2002, leg. M. & C. Jaschhof & U. Kallweit (3x NZAC, SDEI-Dipt-0001169 & SDEI-Dipt-0001173; 4x SDEI, SDEI-Dipt-0001165, SDEI-Dipt-0001172 & SDEI-Dipt-0001174) . 2♂♂ South Island , Southland , Otago Lakes , Fiordland NP, Eglinton River Valley, 2 km N entrance Gladehouse Track, Nothofagus forest, Malaise trap 01– 20.12.2002, leg. M. & C. Jaschhof & U. Kallweit ( NZAC, SDEI-Dipt-0001206; SDEI, SDEI-Dipt-0001143) . 7♂♂ South Island , Southland , Otago Lakes , Fiordland NP, Eglinton River Valley, opposite Gladehouse Track, Nothofagus forest, Malaise trap, 01– 21.12.2002, leg. M. & C. Jaschhof & U. Kallweit (4x NZAC, SDEI-Dipt-0001006, SDEI-Dipt-0001014 & SDEI-Dipt-0001016; 3x SDEI, SDEI-Dipt-0001012, SDEI-Dipt-0001017 & SDEI-Dipt-0001025) . 5♂♂ same locality as previous, sweep net, 03– 04.12.2002, leg. M. Jaschhof (2x NZAC; 3x SDEI) . 1♂ South Island , Clutha , Catlins, Purakaunui Scenic Reserve, mixed podocarp/broadleaf/ Nothofagus forest, sweep net, 03.01.2002, leg. M. Jaschhof ( SDEI, SDEI-Dipt- 0001484) . 3♂♂ same locality as previous, Malaise trap, 27.01– 05.03.2002, leg. M. & C. Jaschhof (1x NZAC, SDEI- Dipt-0001139; 2x SDEI, SDEI-Dipt-0001132 & SDEI-Dipt-0001156) . 4♂♂ South Island , Clutha , Catlins Coastal Rain Forest Park, Catlins River Valley, silver beech forest, Malaise trap, 27.01– 05.03.2002, leg. M. & C. Jaschhof (2x NZAC, SDEI-Dipt-0000614 & SDEI-Dipt-0000801; 2x SDEI, SDEI-Dipt-0000804 & SDEI-Dipt-0000814) . Additional material: 1♂, SEM-object, same date and same locality as holotype ( SDEI, SDEI-Dipt-0000968) .

Description. Male. Head. Head capsule brown. Eye bridge two to three facets wide. Scape and pedicel mostly slightly paler brown than the flagellum, or as brown as flagellum; fourth flagellomere 2.5–3.3 times longer than wide; necks of flagellomeres well differentiated; surface of flagellomeres rough with deep pits, sensilla of two different lengths, longer sensilla robust and curved; setae on the flagellomere slightly shorter than flagellomere width, slightly curved. Maxillary palp long and pale containing three palpomeres, first one longest, third shortest, first palpomere with four to five long bristles; sensilla on first palpomere long. Prefrons and clypeus bulging. Thorax. lateral side yellowish brown, mesonotum and metanotum brownish. Posterior pronotum bare. Anterior pronotum with two to four setae. Episternum 1 with four to seven setae. Mesonotum with five to seven robust lateral bristles. Scutellum with three to four robust bristles and several smaller setae. Katepisternum as long as high, distal part slightly darker than proximal part. Wing. Length 2.3–2.7 mm; width/length ratio 0.35–0.41. Membrane transparent and without macrotrichia, anal area present; all posterior veins distinct, stem of M weak; apical half to apical third of R 5 with macrotrichia on both sides; exceptionally in one specimen (SDEI-Dipt-0001156) three macrotrichia on M 1 on left wing and one macrotricha on the right M 1; r-m and bM without macrotrichia (exceptionally one macrotrichium on r-m on one wing of one specimen [SDEI-Dipt-0001490]); R 1 approximately 0.9–1.3 times as long as R; c/w ratio 0.6–0.8; r-m 1.1–1.3 as long as bM. Haltere brownish; head of haltere as long as shaft. Legs pale brown, much brighter than thorax. Tibial organ surrounded by a circular border and as wide as half of the width of the tibial apex; tibial organ consists of approximately ten bristles arranged in an irregular row. Front tibia without or with one robust bristle among the vestiture. Mid tibia with one or two slightly robust bristles. Hind tibia with a posteriodorsal row of robust bristles, comprising 50–66% of apical part of tibia, several longer additional bristles on the ventral side. All tibial spurs equal in length. Claws with five robust teeth. Abdomen pale brown, slightly paler than thorax; with long, dark setae. Hypopygium ( Figs 20–24 & 43 ). Gonocoxites wider than long, inner side of gonocoxites with short setae, outer side with long setae; ventral, inner side of gonocoxites widely separated basally. Gonostylus 2.2–2.7 times longer than wide; basal part broad, dorsal margin slightly stretched; apical part large, curved inwards with an apical cavity without microtrichia ( Fig. 20 ); subapically one spine and one long whip-lash hair. Tegmen ( Fig. 23 ) with typical structure of the Psl. jejuna complex, parameral apodemes strongly sclerotized up to the apex of the tegmen. Area of teeth absent. Ejaculatory apodeme short and dark, with a distinct base; base pale bown and slender. Posterior portion of gonocoxal apodeme medium sized, brown, and medially connected. Anterior portion of gonocoxal apodeme short and dark brown.

Body size: 2.7–3.5 mm.

Female. Unknown.

Genetic distances. The maximum p-distance between all 48 available COI sequences is 2.28%. The nearest neighbour is Psl. whakahara , diverging by a minimum of 3.51%. All six available 28S sequences are identical and do not show differences to Psl. whakahara .

Etymology. Te Waipounamu is the Māori name for the South Island of New Zealand. The epithet of the new species refers to the restricted distribution of this species.

Distribution. New Zealand.

Discussion. Pseudolycoriella tewaipounamu is one of the larger species of the Psl. jejuna complex. Some specimens reach a body size similar to that of Psl. whakahara , but never have a similarly large wing length. Furthermore, Psl. tewaipounamu shows a well-developed apical cavity on the gonostylus, without any microtrichia. The tegmen of this species has strongly sclerotized parameral apodemes, which are darkly coloured up to the apex of the tegmen. In nearly all other species only the proximal branches of these parameral apodemes are strongly sclerotized. Only Psl. whakahara has dark coloured distal branches like Psl. tewaipounamu , but they are always darker in Psl. tewaipounamu .

Figures

FIGURES 20–24. Pseudolycoriella jejuna complex, Pseudolycoriella tewaipounamu sp. n., details of hypopygium. 20. Hypopygium, ventral. 21. Hypopygium, dorsal, tergite IX removed. 22. Hypopygium, ventral. 23. Tegmen, ventral. 24. Tegmen, dorsal. Abbreviations: ac = apical cavity; at = apex of tegmen; be = base of ejaculatory apodeme; be* = base of ejaculatory apodeme covered by the membranous area; dc = dorsal carina; df = dorsal fold; ea = ejaculatory apodeme; gc = gonocoxite; gs = gonostylus; ll = lateral lobe; ma = membranous area; mf = median fold; pa = parameral apodeme; pa* = parameral apodeme covered by integument; sp = gonostylar spine; wh = whip-lash hair.

FIGURES 43–47. Pseudolycoriella jejuna complex, hypopygia. 43. Pseudolycoriella tewaipounamu sp. n. 44. Pseudolycoriella hauta sp. n. 45. Pseudolycoriella whakahara sp. n. 46. Pseudolycoriella jejunella sp. n. 47. Pseudolycoriella maddisoni sp. n.