2582
Author
Chamorro, Maria Lourdes
Author
Holzenthal, Ralph W.
text
Zootaxa
2010
2010-08-31
2582
1
252
journal article
11755334
Polyplectropus guyanae
,
new species
Figs. 16C
,
62
,
138
Polyplectropus guyanae
can be readily distinguished from
P. peruvianus
,
new species
by the presence of an apically bifurcating mesoventral process of the preanal appendage (completely fused apically and bearing rows of peg-like setae in
P. peruvianus
). Additionally,
P. guyanae
has a rounded apex of the intermediate appendage (concave with mesal papillate lobes bearing apical setae in
P. peruvianus
), an oblong apex of the dorsal phallic sclerite (ventrally produced and sclerotized in
P. peruvianus
), and an oblong ventral branch of the inferior appendage (narrowing apically in
P. peruvianus
).
Adult.
Length of forewing
3.5–3.8 mm
, n = 6. Color of head, thorax, and legs brown; setae on body grey and golden brown; tegulae with long, golden brown and grey setae; setae on wings darker brown along costal margin, rest of wing lighter shade of brown with scattered patches of grey setae.
Male genitalia.
Sternum IX in lateral view deltoid, anterior margin entire, posterior margin submedially concave; in ventral view narrowly rectangular, anterior margin highly concave, posterior margin with median flange. Tergum X membranous, oblong, bearing dorsal microsetae. Intermediate appendage as long as inferior appendage, digitate, with a pair of long apical setae; in dorsal view digitate, apex narrowing mesad; in caudal view rounded, curved, directed laterodorsad. Preanal appendage bipartite; possible small remnant of dorsolateral process of preanal appendage; mesolateral process setose; in dorsal view orbicular, in lateral view deltoid; mesoventral process setose; in lateral view hook-like, dorsally produced into elongate, digitate lobe, anteroventral margin angled, posterior margin truncate; in caudal view fused basomesally, processes slightly separated apically, ventral margin of process acute. Inferior appendage bipartite with anterior basal plate not extending anterad beyond sternum IX when observed in lateral view; dorsal branch setose, in lateral view clavate; in ventral view narrow, lateral margin apically produced, sinuate and undulate, posterior margin acute, mesal margin slightly undulate, angled, expanding posterad into ventral branch; ventral branch setose, elongate, in lateral view digitate, rounded posterad; in ventral view oblong, posteromesal margin convex, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view cylindrical, apex narrowly oblong; apex of dorsal phallic sclerite in dorsal view rounded; endothecal membrane with many short, sclerotized, peg-like spines, when everted spines arranged in a circle, dorsally not as densely packed, also visible is a horseshoe-shaped sclerite (not readily visible when endotheca is not everted).
Holotype
male.
GUYANA
:
Dubulay Ranch
,
Aramatani Cr
[eek],
6°33'00"N
,
57°48'00"W
,
15–18.iv.1995
,
O S Flint
—(
UMSP000107501
) (
NMNH
)
Paratype
.
GUYANA
:
Dubulay Ranch
,
Aramatani Cr
[eek],
6°33'00"N
,
57°48'00"W
,
15–18.iv.1995
,
O S Flint
—
2 males
,
2 females
(
NMNH
)
;
VENEZUELA
:
Territorio Federal
Amazonas
[Estado
Amazonas
]:
Cerro de la Neblina
, small stream east side of basecamp, [
00°51'00"N
,
66°10'00"W
],
140 m
,
20–24.iii.1984
,
Flint
&
Louton
—
1 male
(
NMNH
)
.
Distribution.
Guyana
and
Venezuela
.
FIGURE 62.
Male genitalia of
Polyplectropus guyanae
,
new species
(holotype): A—left lateral view and inset of mesoventral process of preanal appendage; B—dorsal view; C—caudal view; D—ventral view; E–H—phallus: E—left lateral view; F—dorsal view; G—apex dorsal view; (paratype): H—apex, caudal view.
Etymology. This species is named for the country of
Guyana
where the
holotype
and several
paratypes
were collected.