Corresponding author: Hélcio R. Gil-Santana (
Academic editor: Laurence Livermore
Gil-Santana HR, Oliveira J, Bérenger J-M (2020) A new genus and a new species of Ectrichodiinae from French Guiana and an updated key to the genera of the New World (Hemiptera, Reduviidae). ZooKeys 968: 85–109.
The subfamily
It is the 23rd genus of this subfamily. Most specimens of this new genus and species from French Guiana, males and females, were collected by the Société Entomologique Antilles-Guyane (
Photographs of the holotype, paratypes and allotype of
The window trap used for catching insects in the forest by
Scanning electron microscopy images (Figs
The specimens of
Measurements (mm) of male type specimens (N = 11) of
Measurements | Holotype | Mean | SD | range | Minimum | Maximum |
---|---|---|---|---|---|---|
Length to tip of abdomen | 7.75 | 7.62 | 0.36 | 1.1 | 6.9 | 8.0 |
Head length including neck | 1.56 | 1.53 | 0.09 | 0.25 | 1.37 | 1.62 |
Head width across eyes | 1.0 | 0.97 | 0.05 | 0.13 | 0.87 | 1.0 |
Anteocular portion length | 0.62 | 0.6 | 0.5 | 0.18 | 0.5 | 0.68 |
Postocular portion length1 | 0.31 | 0.35 | 0.03 | 0.06 | 0.31 | 0.37 |
Synthlipsis | 0.5 | 0.48 | 0.03 | 0.07 | 0.43 | 0.5 |
Eye width | 0.31 | 0.28 | 0.03 | 0.06 | 0.25 | 0.31 |
Fore lobe of pronotum length | 0.75 | 0.67 | 0.06 | 0.13 | 0.62 | 0.75 |
Fore lobe of pronotum max. width | 1.5 | 1.5 | 0.07 | 0.19 | 1.37 | 1.56 |
Hind lobe of pronotum length | 0.87 | 0.91 | 0.05 | 0.19 | 0.81 | 1.0 |
Hind lobe of pronotum max. width | 2.37 | 2.41 | 0.08 | 0.3 | 2.2 | 2.5 |
Abdomen maximum width2 | 2.87 | 2.92 | 0.21 | 0.75 | 2.62 | 3.37 |
1Excluding neck; 2at level of tergite V.
Measurements (mm) of female type specimens (N = 4) of
Measurements | Allotype | Mean | SD | range | Minimum | Maximum |
---|---|---|---|---|---|---|
Length to tip of abdomen | 8.4 | 8.48 | 0.3 | 0.7 | 8.1 | 8.8 |
Head length including neck | 1.62 | 1.7 | 0.1 | 0.19 | 1.62 | 1.81 |
Head width across eyes | 1.0 | 1.02 | 0.03 | 0.06 | 1.0 | 1.06 |
Anteocular portion length | 0.56 | 0.7 | 0.09 | 0.19 | 0.56 | 0.75 |
Postocular portion length1 | 0.37 | 0.37 | 0.05 | 0.13 | 0.31 | 0.44 |
Synthlipsis | 0.5 | 0.48 | 0.03 | 0.07 | 0.43 | 0.5 |
Eye width | 0.25 | 0.25 | 0 | 0 | 0.25 | 0.25 |
Fore lobe of pronotum length | 0.69 | 0.67 | 0.06 | 0.13 | 0.62 | 0.75 |
Fore lobe of pronotum max. width | 1.62 | 1.69 | 0.05 | 0.13 | 1.62 | 1.75 |
Hind lobe of pronotum length | 1.0 | 1.0 | 0 | 0 | 1.0 | 1.0 |
Hind lobe of pronotum max. width | 2.5 | 2.48 | 0.08 | 0.19 | 2.37 | 2.56 |
Abdomen maximum width2 | 3.56 | 3.48 | 0.08 | 0.19 | 3.56 | 3.37 |
1Excluding neck; 2at level of tergite V.
Most of the figures of the male genitalia (Figs
Observations were made using a stereoscope microscope (Zeiss Stemi) and a compound microscope (Leica CME). Measurements were made using a micrometer eyepiece. General morphological terminology mainly follows
The specimens examined will be deposited as follows: male holotype, 6 male paratypes, female allotype, and 1 female paratype in the
French Guiana.
The name of the new genus was composed by the word Amazo-, from Amazon, as a tribute for this region in which this remarkable species lives and also because it holds an outstanding biodiversity that must be preserved for future generations. The second word composing the name,
French Guiana, Holotype, male, Patawa, Montagne de Kaw, 20.xi.2001, piège malaise, J. Cerda leg. (
French Guiana.
The new species is named in honor to Dr Eric Guilbert (
In
Male genitalic characters apparently have little utility in the taxonomy of Neotropical
The male genitalia of four species of
Among the aforementioned recorded male genitalia, it is noteworthy the similarity between the grooves (gr) on the midlateral portions of the phallothecal sclerite of
1 | Antennal insertion shielded laterally by a small sclerite. Scutellum with two midlateral projections and an apical blunt tip. Tarsi two-segmented. Fore and middle tibia without tibial pad |
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– | Antennal insertion with at most a small process on the antennifer. Scutellum with two distal prongs. Tarsi three-segmented. Fore and middle tibia with tibial pad |
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2 | Antennal insertion shielded laterally by a small process on the antennifer; vertex elevated, ocellar tubercle conical |
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– | Antennal insertion not shielded by an antennifer process; vertex not elevated, ocellar tubercle conical or rounded |
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3 | Four antennal segments |
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– | Six or more [apparent] antennal segments |
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4 | Ocelli not raised on an ocellar tubercle; abdominal sternites with heavy punctation |
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– | Ocelli raised on an ocellar tubercle; abdominal sternites without heavy punctation |
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5 | Fore femur with a ventral cleft |
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– | Fore femur without ventral cleft, although it may be armed on ventral surface |
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6 | Coloration uniformly black |
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– | Coloration with a combination of dark and light brown |
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7 | Abdominal sternites heavily punctated |
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– | Abdominal sternites lacking heavy punctation |
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8 | Head elongate in lateral view, i.e., head length greater than head height |
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– | Head subtriangular in lateral view, i.e., head length and height subequal |
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9 | Fore femora with a row of large dentiform processes ventrally |
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– | Fore femora unarmed or at most with a series of minute denticles or stiffened setae ventrally |
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10 | Postocular region with a pair of blunt elevations; seven antennal segments; fore and middle femora incrassate, with a ventral carina and a row of setigerous and dentiform tubercles; length 9–9.5 mm |
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– | Postocular region without a pair of elevations; seven or eight antennal segments; fore and middle femora incrassated or not incrassated, without a ventral carina and a row of setigerous and dentiform tubercles |
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11 | Seven antennal segments; anterior pronotal lobe with a pair of paramedial carinated lobes, ocellar tubercle conical; prongs of scutellum close basally, divergent distally, spiniform |
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– | Seven or eight antennal segments; anterior pronotal lobe without a pair of paramedial carinated lobes; ocellar tubercle not conical: prongs of scutellum separated basally, subparallel. |
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12 | Robust species of 15 to almost 40 mm in length; fore femora thickened, sometimes strongly so; middle femora less frequently thickened, both with blunt tubercles or sharp and dentiform processes set on areas with short stiff setae; fore and middle trochanters with similar armature; fore and middle tibiae slightly or strongly thickening toward apex, with tibial pad well developed |
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– | Smaller and/or less robust species; femora slender or slightly thickened; different set of characters |
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13 | Head longer than wide |
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– | Head length as long as or shorter than the width |
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14 | First (visible) labial segment elongate, longer than second and third (visible) together; pronotum smooth and shiny |
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– | First (visible) labial segment shorter than or at most subequal to second and third (visible) together; pronotum opaque, typically rugose, seldom smooth and shiny |
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15 | Abdominal sternites with numerous and large punctations; small species |
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– | Abdominal sternites lacking numerous and large punctations; small to large species |
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16 | Second (visible) labial segment longer than first; anterior pronotal lobe with distinct sculpture, posterior pronotal lobe rugose; metasternum with two transverse carinae |
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– | Second (visible) labial segment subequal in length to first segment; different set of characters |
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17 | First (visible) labial segment shorter than second and third together; second segment subequal to first, at most slightly longer or shorter; body red-orange and black, rarely brownish species |
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– | First (visible) labial almost as long as or slightly longer than second and third together; second distinctly shorter than first; body dark brown, brownish, blackish, at most with yellowish markings |
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18 | Longitudinal sulcus of the anterior pronotal lobe well developed anteriorly, but not reaching transverse sulcus; pronotum often rugose on anterior lobe, opaque or moderately shiny; length 10–26 mm |
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– | Longitudinal sulcus of the anterior pronotal lobe deep medially, but not reaching anterior or posterior margins of lobe; pronotum shiny, smooth; length 12–15 mm |
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19 | First antennal segment approximately half as long as head; median longitudinal sulcus on anterior pronotal lobe obsolete; length 9–14.5 mm |
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– | First antennal segment about as long as head; median longitudinal sulcus well developed on anterior pronotal lobe and extending onto posterior lobe continuously; length 8–17 mm |
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20 | Body not flattened dorsoventrally |
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– | Body flattened dorsoventrally |
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21 | With ventrolateral elevations posterior to eyes; ocellar tubercles and ocelli large to very large; legs slender, ventrally without spines or carinae; tibial pad very small, less than 1/5 length of fore and 1/10 length of middle tibiae; length 14–25 mm |
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– | Without ventrolateral elevations posterior to eyes; ocellar callus conical or flattened; fore and middle legs strongly carinated below, femora with setigerous tubercles and dentiform spines; tibial pad on fore and middle tibiae moderately developed, extending to between 1/5 to 1/3 length of segment; body length 6–13 mm |
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22 | Longitudinal sulcus of anterior pronotal lobe reduced to a fovea; anteocular region longer than postocular; head elongate; fore and middle femora slightly enlarged, fusiform, ventrally carinated with setigerous tubercles |
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– | Longitudinal sulcus of pronotum extending across both lobes; anteocular region much shorter than postocular; head hemispherical, vertical; fore femora enlarged basally, narrowing at apex, curved, thinly carinated ventrally, on basal 2/3, with setigerous and teeth-like tubercles; middle and hind femora similar, slender, straight, without carinae |
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