The Psocoptera (Insecta) of Tasmania, Australia
Author
Schmidt, Evan R.
Author
New, Timothy R.
text
Memoirs of Museum Victoria
2008
2008-12-31
65
71
152
https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-65-2008/pages-71-152/
journal article
10.24199/j.mmv.2008.65.7
1447-2554
12211502
DA62FFC8-02A6-429F-9478-93453E083675
Ptycta colei
sp. nov.
Figures 206–13
Ptycta hollowayae
Smithers.
Cole et al., 1989: 34
.
Material examined.
Holotype
:
Tasmania
,
UV
light trap, open forest remnant,
University
of
Tasmania
,
Hobart
,
13 May 1986
.
Paratype
: same data as holotype;
paratype
:
Bedfordia salicina
, montane grassy forest, Tunbridge-Steppes Road,
29 May 1986
. Additional records:
site
45, 1, 1 nymph, 5 June 87;
site
127A, 1, 24 Mar 87; 1, 22 Feb 88;
site
131E, 1, 2 nymphs, 24 Feb 88;
site
159B, 1, 18 Jan 87;
site
214A, 1, 2 Mar 87; 1, 17 Mar 87
.
Description of male. Coloration
(after ca 4.5 years in alcohol). Ground colour of head buff, with the following dark brown: markings along back of vertex, dorsal to eyes and along median epicranial suture; band along epicranial arm from ring surrounding antenna base to narrow band adjacent to lateral ocelli; stirrup mark centrally on frons; parallel striae on postclypeus; antenna; two apical segments of maxillary palp. Posterior third of anteclypeus and labrum brown. Eyes black. Ocelli pale, with black internal borders. Thorax dark brown, with paler sutural areas. Legs buff except coxa, apices of femur and tibia, tarsal segments dark brown. Fore wing (fig. 206). Hind wing (fig. 207) hyaline. Abdomen grey-brown dorsally, pale ventrally, terminal segments dark brown.
Morphology
.
IO
:D = 1.2. Eyes large, offstanding, reaching well beyond vertex when viewed from side of head. Median epicranial suture distinct, ocelli on raised tubercle. Antennae long, finely setose, sensory placoids: 2 at base f
1
, 1 apices f
2
, f
4
and f
10
. Apex of terminal segment bluntly pointed. Fore wing (fig. 206): few fine setae on costa in region of pterostigma; veins sparsely setose, except
cu
2
; short fine setae on basal veins as follows: posterior margin of
r
, scattered on vein and margin of
m+cu
, on both posterior and anterior margins of
an
. Both sections of vein
cu
1a at slight angle, approximately equal in length. Pterostigma lacking spur-vein, veins
rs
and
m
joined by a short cross-vein. Hind wing (fig. 207) glabrous, except for few short fine setae on margin between veins
r
2+3
and
r
4+5
. Epiproct (fig. 208, anterior margin facing posterior direction) margin well sclerotised, anterior margin bilobed, spiculate. Paraproct (fig. 208) with large terminal spine, round field of 38 trichobothria. Hypandrium (fig. 209) with strap-like tongue, bearing row of bluntly pointed teeth along margin, these becoming smaller, with more rounded apex towards distal end of tongue; apex of tongue asymmetrically curled. Phallosome (fig. 210) frame closed, with short central lateral projections and slender elongate apex.
Dimensions.
B 3.8, FW 5.10, HW 3.86, F 0.99,
T
2.15, t
1
0.576, t
2
0.197, rt 2.9:1, ct 27,4, f
1
1.181, f
2
0.941.
Description of female
.
Coloration
(after ca 4.5 years in alcohol). As male, except dark brown band along epicranial arm and ring surrounding base of antenna not as distinct. Fore wing (fig. 211).
Morphology.
IO
:D = 1.8. Eyes offstanding. Antennae finely pubescent, sensory placoids: 4 at base f
1
, 1 at apices f
4
, f
6
and f 10. Fore (fig. 211) and hind wings as male. Epiproct setose in apical half, lateral margins sclerotised. Paraproct with round field of 38 trichobothria. Subgenital plate (fig. 212) with small field of preapical setae on lobe, and longer setae on body of plate. Gonapophyses and spermathecal plate (fig. 213).
Figures 206-213.
Ptycta colei
. Male: 206, fore wing; 207, hind wing; 208, epiproct and paraproct; 209, hypandrium; 210, phallosome. Figures 206, 207 and 208-210 to common scales. Female: 211, fore wing; 212, subgenital plate; 213, gonapophyses and spermathecal plate. Figures 212 and 213 to common scale.
Dimensions
. B 4.0, FW 5.16, HW 3.98, F 1.03,
T
2.33, t
1
0.624, t
2
0.229, rt 2.7:1, ct 28,4, f
1
1.286, f
2
0.941.
Distribution
.
Tasmania
and Bass Strait Is.
Remarks
. This species is most similar to
P. hollowayae
Smithers.
Females differ in details of fore wing pigmentation: a triangular pigmented area bound by veins
r
and
rs
of
P. hollowayae
is absent in
P. colei
; the basal third of cell
An
is lightly pigmented in
P. colei
which appears absent in
P. hollowayae
. The pterostigma of the fore wing of males of
P. hollowayae
is uniformly pigmented. In contrast only about the apical half is pigmented in
P. colei
.
Ptycta colei
also lacks the darker clouds in the basal half of cell
R
1
and apices of cells
R
1
and
R
3 which are present in the males of
P. hollowayae
(
Smithers, 1984
; fig. 70). The sclerotised process basad of the trichobothrial field of the male paraproct (
Smithers, 1984
; fig. 72) of
P. hollowayae
is not distinct in
P. colei
, and the basal margin of the anterior lobe of the epiproct is much more bilobed in
P. colei
than that shown for
P. hollowayae
(
Smithers, 1984
; fig. 71).
Ptycta colei
is a larger species, fore wing lengths vary from 4.6–5.1 mm (), 5.1–5.4 mm (). In both sexes the junction of veins
rs
and
m
in the fore wing varies from a short cross-vein to a short fusion.
Etymology
. Named for Peter Cole, whose studies of the Bass Strait
Psocoptera
form a foundation for knowledge of this genus in the region.