The genus Pseudolycoriella Menzel & Mohrig, 1998 (Diptera, Sciaridae) in New Zealand
Author
Köhler, Arne
text
Zootaxa
2019
2019-12-12
4707
1
1
69
journal article
24541
10.11646/zootaxa.4707.1.1
7130e278-109a-4da2-b2e7-adeca14b5c77
1175-5326
3587155
3C00FB35-708D-4FF0-94C2-B15BD2A1F37A
Pseudolycoriella porotaka
sp. n.
(
Fig. 39
)
urn:lsid:zoobank.org:act:NomenclaturalActs/
EC
053068
-0F35-494E-9F41-4A28247CA143
Material studied.
Holotype
male
.
New Zealand
:
North Island
,
Bay of Plenty
,
Katikati
,
Te Mania
catchment,
Malaise trap
, 19.09–
27.10.2016
, leg.
P.A. Maddison
(
NZAC
, SDEI-Dipt-0001225)
.
Paratype
.
1♂
North Island
,
Bay
of Plen- ty,
Katikati
, 449
Lund Road
,
Malaise trap
, 25.07–
08.08.2016
, leg.
P.A. Maddison
(
SDEI
, SDEI-Dipt-0001250)
.
Description.
Male
.
Head.
Head capsule brown. Eye bridge three facets wide. Scape and pedicel much paler than the brown flagellomeres; fourth flagellomere 2.3–2.4 times longer than wide; necks of flagellomeres well differentiated, paler than body of flagellomeres; surface of flagellomeres rough with deep pits, sensilla of two different lengths, small ones and longer, curved sensilla; densely arranged setae on the flagellomere shorter than flagellomere width, slightly curved, arising from small elevations. Maxillary palp very long and three-segmented, first palpomere longest, second one shortest; first palpomere with an inconspicuous patch of sensilla and four long bristles, one of which is longer and more robust, located on the outer side of the first palpomere. Prefrons and clypeus bulging.
Thorax
brown, laterally brighter. Posterior pronotum bare. Anterior pronotum with three to five setae. Episternum 1 with seven to nine setae. Mesonotum with five robust lateral bristles. Scutellum with four robust bristles and several minor setae. Katepisternum slightly longer than high.
Wing.
Length
2.7–2.8 mm
; width/length ratio 0.36–0.37. Membrane transparent and without macrotrichia, anal area present; all posterior veins distinct, except faint stem of M, apical half to three-fifths of R
5
with macrotrichia on both ventral and dorsal sides; bM and r-m bare; R
1
0.8–0.9 times as long as R; c/w ratio 0.77–0.78; r-m as long as bM. Haltere brownish; head of haltere slightly longer than shaft.
Legs
yellowish pale brown, paler than thorax; coxae pale brown. Tibial organ surrounded by a circular border and as wide as half of the width of the tibial apex; tibial organ consists of an irregular row of bristles. Front tibia without robust bristles among the vestiture. Mid tibia without (
holotype
) or with two (
paratype
) robust bristles among the vestiture. Posteriodorsal row of bristles inconspicuous, extending along two-thirds of tibia apex. All tibial spurs equal in length. Claws with robust teeth.
Abdomen
concolourous with long, dark setae.
Hypopygium
(
Fig. 39
). Gonocoxites wider than long, inner side of gonocoxites with small setae, outer side with long setae; ventral, inner side of gonocoxites not fused basally. Gonostylus elongate, slightly tumid in the middle, with a dorsal edge, 2.7–2.9 times longer than wide; apex moderately separated, slightly bent, apical end broad, blunt, on ventral side with a apical cavity without microtrichia, one spine and one whip-lash hair present. Tegmen of the typical ground plan of the
Psl
.
jejuna
complex, of very rounded shape; dorsal folds present; parameral apodemes basally strongly sclerotized, medially fused, distal branches very parallel and close. Area of teeth absent. Ejaculatory apodeme pale brown, slen- der, and long; base very delicate, long, and u-shaped. Posterior portion of gonocoxal apodeme medium sized and brown, joined medially. Anterior portion of gonocoxal apodeme short and dark brown.
Body size
:
2.9–3.1 mm
.
Female
. Unknown.
Genetic distances.
Both available COI sequences show a p-distance of 1.16%. The nearest neighbour is
Psl
.
whena
, diverging by a minimum of 9.30%. Both available 28S sequences are identical and do not show differences to the sequences of
Psl
.
sudhausi
and
Psl
.
whena
.
Etymology.
Porotaka
is a Māori word which means round or circular. The epithet refers to the roundish shape of the tegmen.
Distribution.
New Zealand
.
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.
Discussion.
Pseudolycoriella porotaka
can be distinguished from all other species of the
Psl
.
jejuna
complex by the combination of a very rounded tegmen and a low width/length ratio of the fourth flagellomere. In addition, this species has flagellomeres with shorter and denser setae compared to the other species. Like
Psl
.
nahenahe
,
Psl
.
sudhausi
, and
Psl
.
whena, Psl
.
porotaka
has a narrow ejaculatory apodeme.