A revision of the New World genus Aptilotella Duda (Sphaeroceridae: Limosininae)
Author
Luk, Stephen P. L.
luk@uoguelph.ca
Author
Marshall, Stephen A.
luk@uoguelph.ca
text
Zootaxa
2014
2014-02-05
3761
1
1
156
journal article
5940
10.11646/zootaxa.3761.1.1
5444e27e-3e2a-429b-931b-823a2086e3c5
1175-5326
4909057
82E0F1DC-BC98-4E8A-A3D5-21ECB392CC0B
Aptilotella erinacea
Luk & Marshall
,
sp. n.
Figures 126–137
Description.
Body length
0.8–0.9 mm
. Head ground color orange. Frons finely rugose; pale areas silvery, not attaining front margin of frons; brown medial stripes each about one-third the width of frons, tapering anteriorly; brown orbital stripes narrow, not entering ocular emargination. Ocellar tubercle slightly raised; ocelli minute; ocellar bristle two-thirds the length of frons. Orbital bristle present; orbital setulae minute, in three pairs. Interfrontal setae minute, in two pairs. Face shining; facial excavation with a silvery band continuing onto anterior half of gena; gena weakly shining, finely rugose. Antenna brown. Scutum and scutellum dark reddish-brown, shining, finely rugose, finely microtrichose. Scutum uniformly setose; shallowly creased along posterolateral margin. Scutellum flat, twice wider than long, 0.6 times the width of scutum. Apical scutellar bristles twice as long as basal. Pleuron dull. Legs orange; coxae black; basal half of hind femur brown; fore femur, tibia and first tarsomere dark brown; fore tarsus off-white; mid tibia with two anterodorsal bristles. Wing pad (
Fig. 133
) brown in male; reduced in female to a small, brown stub. Abdomen black, shining, finely rugose; tergites uniformly setose and microtrichose; sternites finely microtrichose. Epandrium and synsternite 6+7 dark reddish-brown.
Male terminalia.
Sternite 5 (
Fig. 129
) rectangular; posteromedial margin emarginate, with several setae, flanked by three long setae; sternal plate broadly rectangular, densely spinulose, with two dense patches of very stout setae, posteriorly with two pairs of premarginal setae. Synsternite 6+7 (
Fig. 128
) with medial bridge flanked by a strong lobe on both sides. Epandrium (
Fig. 126
) with ventral margins pointed and curled outward. Cercus (
Figs. 126, 127
) swollen, triangular; outer margin with three evenly separated premarginal setae, medially with a long seta; apex with several sensory setae; base and outer half setulose. Surstylus (
Figs. 126, 127
) saddle-shaped, apically rounded; ventral face flat, with setae on outer margin; outer face strongly concave. Postgonite (
Fig. 131
) twice as long as wide; posterior margin rounded; descending portion one-third the length of postgonite, with three sensory setulae; articulatory process for pregonite rounded; articulatory process for basiphallus short-stalked, knobbed. Hypandrium (
Fig. 132
) with slender medial rod slightly skewed to the right; posteromedial fork thick, rounded and divergent; hypandrial arms paddle-shaped, with a large tooth on posteromedial margin; pregonite inconspicuous. Aedeagus as in
Figure 130
. Basiphallus compressed, squared, with truncate epiphallus; anterior margin weakly arched; articulatory process for postgonite short and divergent. Ejaculatory apodeme discoid, inconspicuous. Ventrobasal sclerite divided. Lateral flanking sclerite narrowly fused ventrobasally; dorsal margin divergent and tapering. Ventral flanking sclerites clustered; the slender basal article originating ventrodistally to lateral flanking sclerite and rising inward, tapering to a point; the convex medial article originating along the basal article and meeting the distal margin of lateral flanking sclerite, margins sclerotized and broadening distally, converging outward to a thickened point; the paddle-shaped distal article originating ventrodistally to medial article, converging inward. Medial paired sclerites originating from apices of lateral flanking sclerites; apices dilated, converging and nearly touching.
Female terminalia.
Epiproct (
Fig. 134
) light brown, rectangular, medially setulose. Each half of tergite 8 (
Figs. 134–136
) weakly convex, triangular; setulose. Cercus 2.5 times as long as wide; with one long apical seta and several preapical setae. Sternite 8 (
Figs. 135, 136
) brown, rectangular. Spermathecae (
Fig. 137
) simple; length of sclerotized ducts approximately twice the diameter of a spermatheca.
Variation
.
The gena is dark yellow in some specimens. Less frequently, the legs have a dark orange ground colour.
Etymology.
The species epithet is from the Latin
erinaceus
, “hedgehog,” referring to the densely spinulose sternal plate.
Type material.
Holotype
♂
,
DEBU
.
HONDURAS
:
Cortés
,
Parque Nacional Cusuco
,
18.7 km
N Cofradía
,
5.4 km
W Buenos Aires
,
Cerro Jilinco
,
1960 m
,
26.viii.1994
, pine/cloud forest berlese,
R.S. Anderson.
Paratypes
.
HONDURAS
: same label as
holotype
(
3♂
,
♀
,
DEBU
;
3♂
,
EAPZ
)
;
same label as
holotype
but at
2000 m
, cloud forest berlese (
2♂
,
DEBU
)
;
same label as
holotype
but at
2080 m
, elfin cloud forest litter berlese (
♂
,
DEBU
)
.
Comments
.
In
Aptilotella erinacea
, dense spinules are present on the sternal plate of the male and the hypoproct of the female.