Corresponding author: Alexander Dostal (
Academic editor: Terry Erwin
The subgenus
Die Untergattung
Currently, the genus
Preserved specimens from different collections are used which are mounted on commercially available paper cards. I strongly recommend cutting away the right upper corner of the mounting card, for more convenient investigation of the lower surface of the pronotum, and to remove the abdomen and to mount this, ventral side up, beside the specimen, because the abdomen carries important distinguishing characters. Male and female genital organs were dissected and also glued to the cards beneath the specimens from which they were removed.
The species descriptions were based on the most distinguishing external characters as defined by Baehr (2008: 9). Label data for examined material are given in full, with exact labeling, except for the date format, which is transcribed to the format “dd.mm.jjjj”.
Abbreviations of collections mentioned in text:
Collection Petr Bulirsch, Praha
Collection Martin Baehr, München
Collection Alexander Dostal Wien, including the collection Karel Kult
Institut Royal des Sciences Naturelles, Bruxelles
Museum National d’Histoire Naturelle, Paris
Museum für Naturkunde der Humboldt Universität Berlin
Naturhistorisches Museum Wien
Measurements were taken with a calibrated Leica ocular scale at absolute magnifications 19,4× (for all measurements except pronotum) and 39,1× (for pronotal length and width). L = total length in mm, from Apex of Mandible to apex of elytra. W = maximum width in mm, situated in the apical third of elytra. PL = pronotum length, maximum length of pronotum measured along median line from the base of the anterior bristle fringe to the base of the posterior one. PW = maximum width of pronotum, measured normal to the midline, situated in most cases near the posterior angles P-LW = length-width -index of pronotum (length:width), if the value is smaller than 1, it means that the pronotum is wider than long, for values above 1: the pronotum is longer than wide. F-LW = length-width - index of both elytra, same as previous. Dl, Dr = number of dorsal setiferous punctures (D) in the third interval of the left side (Dl) and of the right side (Dr) respectively. The preapical puncture in the third interval is counted together with the other discal punctures.
Following parameter are calculated: M = arithmetical mean, Max = maximum value, Min = minimum value, N = number of individuals measured, SD = standard deviation.
The genus
Photograph of prothorax and base of metathorax of
Photograph of right leg, posterior view, of base of trochanter, femur, and base of tibia of
This organ is not unique within the Tribe
combination from the genus-name “
the species of this subgenus are characterized by the denticle of the posterior margin of the eye, the corresponding incision in the anterior margin of the pronotum at anterior angle and the sculptured band (stridulation organ) on the proepisterna, the latter is the most obvious character of the genus
The species are restricted to South America, ranging from French Guyana, southward through the Amazon Basin to southern Brazil, Paraguay, North and Central Argentina and most likely also Uruguay (no evidence from this country so far).
1 | Posterior part of eye rounded, without denticle; pronotum without incision of the anterior margin | Subgenus |
– | Posterior part of eye extended to a sharp denticle; pronotum ( |
2 |
2 | Elytral base unbordered and without tubercles, except one beside the scutellar puncture | 3 |
– | Elytral base bordered or with tubercles at the basal end of intervals 2, 3, 4 and 5 | 4 |
3 | Abdominal sterna, especially sternum VII (anal ventrite) with gross isodiametric microsculpture, all without punctures; median lobe of aedeagus slender, rounded at apex, not markedly flattened laterally ( |
|
– | Abdominal sterna with fine isodiametric microsculpture, without punctures ( |
|
4 | Base of elytra not continuously bordered, but with flat tubercles at the basal end of intervals 3, 4, and 5, and a tubercle beside the scutellar puncture; anal ventrite with fine, slightly transverse mashes, without punctures ( |
|
– | Base of elytra bordered at least at the basal end of interval 4 and 5 and with a more or less confluent tubercle at the end of interval 3, and a tubercle beside the scutellar puncture; anal ventrite at least with fine punctures; body flattened, inner elytral intervals flat; species longer than 6 mm | 5 |
5 | Larger species, length 7.6 mm; pronotum as wide as long (1.05×); anal ventrite with slightly transverse mashes and an area with about 40–50 more gross punctures at each side ( |
|
– | Smaller species, length 6.17–6.43 mm; anal ventrite with extremely fine, slightly transverse mashes and an area with about 10 to 15 fine and shallow punctures at each side( |
Latinized noun, genitive case, an eponym based on the surname of my friend and partner, Helmut Berger jun., who organizes and joins me in my entomological excursions all over the world.
A typical
Descriptive statistics for
|
|
|
|
|
|
|
|
|
|
0.88 | 1.93 | 4.49 | 1.22 | 1.07 | 1.11 | 5.00 | 5.00 |
|
1.04 | 2.11 | 6.32 | 1.68 | 1.53 | 1.59 | 5.00 | 5.00 |
|
0.97 | 2.01 | 5.41 | 1.44 | 1.28 | 1.33 | 5.00 | 5.00 |
|
0.03 | 0.04 | 0.35 | 0.09 | 0.09 | 0.09 | 0.00 | 0.00 |
|
0.95 | 2.04 | 5.25 | 1.38 | 1.22 | 1.29 | 5 | 5 |
Photograph of head and anterior portion of pronotum, dorsal view, of
Photograph of abdominal sterna IV-VII, ventral view, of
Photograph of habitus of holotype of
Line drawings of genitalia of
see
Snizek, (CDW). 4247
Latinized noun, genitive case, an eponym based on the surname of the collector of this species, my colleague and friend Herbert Schmid.
a typical
Measurements of
|
|
|
|
|
|
|
|
|
|
0.97 | 1.94 | 6.17 | 1.58 | 1.48 | 1.53 | 5.00 | 5.00 |
|
0.97 | 1.98 | 6.43 | 1.68 | 1.56 | 1.61 | 5.00 | 5.00 |
Line drawings of aedeagus of
Photograph of habitus of the holotype of
Line drawings of genitalia of
see
known only from French Guyana
Brazil, Mato Grosso, Corumba
original series from the same locality, about 30 specimens, holotype in the author’s collection (collection Kult in CDW), paratypes in the collections of ETHZ, IRSNB, MNHN, ZMHB:
known from type locality only: Brazil, Matto Grosso, Corumba
1 ♂, Holotype with red label “TYPE” and a handwritten determination label “
in the collection of Karel Kult this species is represented by the Holotype (see above for details) and 2 males, 1 female, Corumba, Matt. Grosso, with the labels in red “COTYPE”, without determination labels; 3 males, Corumba, Matt. Grosso, one with the handwritten determination label “
Amazonia
3 Ex., “Amazone”:
Amazonia
1 Ex Brazil: Para, (CDW).
Brazil: Bahia
1 Ex. Coll de Castelnau (MNHN):
Brazil: Bahia
1 ♀, Brazil: Tapajos, (CDW).
Van Emden 1947: 862–863 examined type material of
I am very grateful to Dr. Martin Baehr (München), Dr. Kathleen E. Ball (Edmonton) and Dipl. Ing. Martin Donabauer (Wien) for reviewing the manuscript and to Harald Bruckner (Wien) for taking the photographs.