Research Article |
Corresponding author: Irina Morales ( irina.morales@uptc.edu.co ) Academic editor: Laurence Livermore
© 2021 Silvia P. Mondragón-F., Irina Morales, Felipe F. F. Moreira.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Mondragón-F SP, Morales I, Moreira FFF (2021) Telmatometropsis fredyi gen. nov., sp. nov.: a new water strider from the Colombian Pacific region (Insecta, Hemiptera, Gerridae). ZooKeys 1043: 87-102. https://doi.org/10.3897/zookeys.1043.58548
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A new genus of Gerridae (Insecta, Hemiptera, Heteroptera) in the subfamily Trepobatinae, Telmatometropsis gen. nov., with a single included species, T. fredyi sp. nov., is described from the Colombian Pacific region. Representatives of the new genus were collected in mangrove lagoons of Buenaventura Bay, Valle del Cauca Department. The new genus can be diagnosed by the relative proportions of the antennomeres, the shape of the male fore tarsus, and by the black markings on the head, thorax and abdomen.
Aquatic insects, Gerromorpha, Neotropical Region, taxonomy
Gerridae comprises over 750 described species in more than sixty genera and eight subfamilies, of which almost 150 species have been recorded from the Neotropical Region (
The subfamily Trepobatinae is represented in the Neotropical Region by the genera Halobatopsis Bianchi, 1896; Lathriobatoides Polhemus, 2004; Metrobates Uhler, 1871; Ovatametra Kenaga, 1942; Telmatometra Bergroth, 1908; Telmatometroides Polhemus, 1991; Trepobates Uhler, 1894; and Trepobatoides Hungerford & Matsuda, 1958 (
We recently noticed that some of the specimens deposited in the collection of Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia, and identified as T. rozeboomi did not agree with the features mentioned in the description of this species, especially regarding the relative proportions of the antennomeres and the disposition of black markings on the head and body. A more detailed examination also showed a modification on the male fore tarsus that is not reported for any Neotropical genus of Trepobatinae, thus revealing an undescribed genus and species from the Colombian Pacific region that are herein described.
Type specimens have been deposited in the following collections: Colección de Insectos, Museo de Historia Natural “Luis Gonzalo Andrade”, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia (
Telmatometropsis fredyi Mondragón-F., Morales & Moreira sp. nov., by present designation and monotypy.
The new genus is similar to Telmatometroides (Fig.
Comparison of Telmatometropsis gen. nov. with other genera of Neotropical Trepobatinae. Data on other genera were obtained from
Habitat | Ground color | Interocular marks | Mesonotal marks | BL | ANT III/ANT I | ANT III/ANT II | ANT III/ANT IV | |
---|---|---|---|---|---|---|---|---|
Telmatometropsis | Marine | Yellow | Present | Median+lateral | 2.90–3.90 | 1.25–1.85 | 2.05–2.40 | 0.72–0.90 |
Halobatopsis | Freshwater | Yellow/brown | Present/absent | Median+lateral/absent | 3.40–4.60 | 0.68–0.77 | 1.33–1.42 | 0.79–1.12 |
Lathriobatoides | Freshwater | Yellow/brown | Absent | Absent | 2.60–3.20 | 1.10–1.20 | 1.70 | 1.10–1.20 |
Metrobates | Freshwater | Black | Present | Median/median+lateral | 3.00–5.00 | 0.22–0.30 | 0.73–0.84 | 0.67–1.29 |
Ovatametra | Freshwater | Yellow/brown | Present | Median+lateral | 2.00–3.10 | 0.70 | 1.20 | 0.64–0.71 |
Telmatometra | Freshwater | Yellow/brown | Present/absent | Median+lateral/lateral | 3.30–5.50 | 1.20–1.40 | 2.20–2.40 | 1.00–1.42 |
Telmatometroides | Marine | Yellow | Present | Median+lateral | 3.15–3.70 | 1.10–1.20 | 1.40–1.50 | 0.94 |
Trepobates | Freshwater/marine | Yellow/brown/black | Present | Variable | 3.00–5.50 | 0.70 | 1.10–1.20 | 0.84–0.97 |
Trepobatoides | Freshwater | Yellow/brown | Present | Median+lateral | 3.57–4.45 | 0.40 | 1.20 | 0.68–0.70 |
Measurements. Male body length 2.90–3.21, width (across suture between meso- and metanotum) 1.07–1.21; female body length 3.30–3.91, width 1.44–1.52. Color. Ground color of body pale yellow with extensive black and silvery markings dorsally, legs largely pale yellow (Fig.
The generic name refers to its resemblance to the genus Telmatometroides.
Male. [For measurements see Table
Measurements of male morphological structures of Telmatometropsis fredyi sp. nov.
Structure | Male 1 | Male 2 | Male 3 | Male 4 | Male 5 | Male 6 | Male 7 | Male 8 | Male 9 | Male 10 | Maximum | Minimum | Average |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BL | 3.17 | 3.01 | 3.20 | 3.02 | 3.04 | 2.90 | 3.05 | 3.21 | 3.18 | 2.90 | 3.21 | 2.90 | 3.07 |
BW | 1.13 | 1.09 | 1.11 | 1.07 | 1.21 | 1.13 | 1.13 | 1.19 | 1.12 | 1.12 | 1.21 | 1.07 | 1.13 |
HW | 0.28 | 0.28 | 0.32 | 0.31 | 0.32 | 0.29 | 0.31 | 0.35 | 0.32 | 0.31 | 0.35 | 0.28 | 0.31 |
ANT I | 0.48 | 0.40 | 0.47 | 0.45 | 0.40 | 0.44 | 0.48 | 0.44 | 0.47 | 0.47 | 0.48 | 0.40 | 0.45 |
ANT II | 0.29 | 0.31 | 0.35 | 0.30 | 0.32 | 0.33 | 0.34 | 0.32 | 0.32 | 0.31 | 0.35 | 0.29 | 0.32 |
ANT III | 0.70 | 0.71 | 0.75 | 0.71 | 0.74 | 0.68 | 0.72 | 0.68 | 0.71 | 0.66 | 0.66 | 0.75 | 0.71 |
ANT IV | 0.85 | 0.80 | 0.95 | 0.95 | 0.97 | 0.94 | 0.91 | 0.84 | 0.85 | 0.87 | 0.97 | 0.80 | 0.89 |
PL | 0.30 | 0.27 | 0.32 | 0.28 | 0.31 | 0.30 | 0.32 | 0.30 | 0.31 | 0.31 | 0.32 | 0.27 | 0.30 |
AL | 1.23 | 1.10 | 1.10 | 1.03 | 1.03 | 1.16 | 1.21 | 1.23 | 1.27 | 1.12 | 1.27 | 1.03 | 1.15 |
Fore leg | |||||||||||||
FEM | 1.10 | 1.13 | 1.11 | 1.02 | 1.07 | 1.16 | 1.14 | 1.14 | 1.16 | 1.16 | 1.16 | 1.02 | 1.12 |
TIB | 1.10 | 1.19 | 1.14 | 1.12 | 1.12 | 1.15 | 1.16 | 1.12 | 1.16 | 1.11 | 1.19 | 1.10 | 1.14 |
TAR I | 0.10 | 0.06 | 0.07 | 0.07 | 0.10 | 0.08 | 0.08 | 0.09 | 0.09 | 0.09 | 0.10 | 0.06 | 0.08 |
TAR II | 0.27 | 0.32 | 0.31 | 0.31 | 0.26 | 0.31 | 0.29 | 0.28 | 0.31 | 0.34 | 0.34 | 0.26 | 0.30 |
Mid leg | |||||||||||||
FEM | 1.82 | 1.83 | 1.77 | 1.75 | 1.79 | 1.82 | 1.86 | 1.74 | 1.86 | 1.75 | 1.86 | 1.74 | 1.80 |
TIB | 2.64 | 2.64 | 2.61 | 2.46 | 2.69 | 2.55 | 2.66 | 2.61 | 2.62 | 2.62 | 2.69 | 2.46 | 2.61 |
TAR I | 0.93 | 0.87 | 0.87 | 0.63 | 0.88 | 0.81 | 0.87 | 0.80 | 0.82 | 0.88 | 0.93 | 0.63 | 0.84 |
TAR II | 0.68 | 0.71 | 0.73 | 0.52 | 0.79 | 0.73 | 0.70 | 0.73 | 0.50 | 0.68 | 0.79 | 0.50 | 0.68 |
Hind leg | |||||||||||||
FEM | 2.27 | 2.19 | 2.21 | 2.19 | 2.22 | 2.22 | 2.24 | 2.25 | 2.10 | 2.23 | 2.27 | 2.10 | 2.21 |
TIB | 0.93 | 0.92 | 0.93 | 0.89 | 0.91 | 0.81 | 0.92 | 0.88 | 0.92 | 0.92 | 0.93 | 0.81 | 0.90 |
TAR I | 0.22 | 0.21 | 0.22 | 0.21 | 0.22 | 0.19 | 0.21 | 0.21 | 0.22 | 0.21 | 0.22 | 0.19 | 0.21 |
TAR II | 0.27 | 0.27 | 0.27 | 0.26 | 0.28 | 0.25 | 0.26 | 0.26 | 0.26 | 0.27 | 0.28 | 0.25 | 0.27 |
Telmatometropsis fredyi gen. nov, sp. nov., scanning electron micrographs A–C male A fore pretarsal claw, lateral view B fore tarsomere II, area with cuticular pegs adjacent to pretarsal claw insertion, ventral view C apex of fore tibia with grooming structures, ventral view D female, apex of fore tibia with grooming structures, ventral view. Scale bars: 20 μm (A); 10 μm (B, C, D).
Telmatometropsis fredyi gen. nov, sp. nov., male, scanning electron micrographs A proctiger, dorsal view B paramere, lateral view C detail of paramere setiferation D–E sclerites D lateral view E dorsal view. Abbreviations: sclerite (ls), dorsal sclerite (ds). Scale bars: 40 μm (A); 20 μm (B); 0.25 mm (D–E).
Female. [For measurements see Table
Measurements of female morphological structures of Telmatometropsis fredyi sp. nov.
Structure | Female 1 | Female 2 | Female 3 | Female 4 | Female 5 | Female 6 | Female 7 | Female 8 | Female 9 | Female 10 | Maximum | Minimum | Average |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BL | 3.30 | 3.62 | 3.65 | 3.54 | 3.56 | 3.46 | 3.47 | 3.91 | 3.85 | 3.42 | 3.91 | 3.30 | 3.58 |
BW | 1.50 | 1.50 | 1.51 | 1.52 | 1.51 | 1.47 | 1.44 | 1.50 | 1.50 | 1.46 | 1.52 | 1.44 | 1.49 |
HW | 0.34 | 0.34 | 0.36 | 0.35 | 0.35 | 0.36 | 0.37 | 0.36 | 0.36 | 0.36 | 0.37 | 0.34 | 0.36 |
ANT I | 0.49 | 0.55 | 0.53 | 0.54 | 0.53 | 0.55 | 0.54 | 0.54 | 0.55 | 0.51 | 0.55 | 0.49 | 0.53 |
ANT II | 0.35 | 0.34 | 0.36 | 0.35 | 0.34 | 0.37 | 0.33 | 0.36 | 0.36 | 0.34 | 0.37 | 0.33 | 0.35 |
ANT III | 0.74 | 0.71 | 0.74 | 0.73 | 0.78 | 0.81 | 0.68 | 0.83 | 0.79 | 0.73 | 0.83 | 0.68 | 0.75 |
ANT IV | 0.91 | 0.79 | 0.95 | 1.02 | 0.97 | 0.95 | 0.91 | 1.00 | 0.93 | 0.91 | 1.02 | 0.79 | 0.93 |
PL | 0.29 | 0.32 | 0.33 | 0.30 | 0.31 | 0.33 | 0.34 | 0.34 | 0.32 | 0.30 | 0.34 | 0.29 | 0.32 |
AL | 1.53 | 1.71 | 1.72 | 1.70 | 1.72 | 1.63 | 1.64 | 1.90 | 1.82 | 1.60 | 1.90 | 1.53 | 1.70 |
Fore leg | |||||||||||||
FEM | 1.12 | 1.08 | 1.17 | 1.13 | 1.18 | 1.19 | 1.14 | 1.14 | 1.14 | 1.18 | 1.19 | 1.08 | 1.15 |
TIB | 1.04 | 1.07 | 1.10 | 1.07 | 1.09 | 1.08 | 1.09 | 1.10 | 1.13 | 1.10 | 1.13 | 1.04 | 1.09 |
TAR I | 0.10 | 0.09 | 0.09 | 0.11 | 0.12 | 0.10 | 0.12 | 0.08 | 0.08 | 0.10 | 0.12 | 0.08 | 0.10 |
TAR II | 0.34 | 0.43 | 0.43 | 0.37 | 0.40 | 0.41 | 0.40 | 0.40 | 0.43 | 0.39 | 0.43 | 0.34 | 0.40 |
Mid leg | |||||||||||||
FEM | 2.08 | 2.11 | 2.10 | 2.10 | 2.20 | 2.22 | 2.06 | 2.16 | 2.00 | 2.09 | 2.22 | 2.00 | 2.11 |
TIB | 3.14 | 2.98 | 3.11 | 3.15 | 3.14 | 3.21 | 3.13 | 3.07 | 2.77 | 3.07 | 3.21 | 2.77 | 3.08 |
TAR I | 1.09 | 0.96 | 1.07 | 1.07 | 1.00 | 1.09 | 1.02 | 1.02 | 0.96 | 1.06 | 1.09 | 0.96 | 1.03 |
TAR II | 0.71 | 0.81 | 0.83 | 0.86 | 0.70 | 0.89 | 0.84 | 0.84 | 0.69 | 0.85 | 0.89 | 0.69 | 0.80 |
Hind leg | |||||||||||||
FEM | 2.60 | 2.52 | 2.63 | 2.46 | 2.67 | 2.63 | 2.63 | 2.67 | 2.67 | 2.61 | 2.67 | 2.46 | 2.61 |
TIB | 1.15 | 1.11 | 1.14 | 1.17 | 1.15 | 1.13 | 1.12 | 1.12 | 1.05 | 1.14 | 1.17 | 1.05 | 1.13 |
TAR I | 0.26 | 0.26 | 0.28 | 0.27 | 0.27 | 0.27 | 0.27 | 0.27 | 0.25 | 0.27 | 0.28 | 0.25 | 0.27 |
TAR II | 0.33 | 0.32 | 0.33 | 0.34 | 0.33 | 0.35 | 0.34 | 0.35 | 0.33 | 0.31 | 0.35 | 0.31 | 0.33 |
Holotype. Colombia • apterous male; Valle del Cauca, Buenaventura, La Bocana, lagoon, 8.XI.2003; Molano & Camacho leg. (
The new species is named in honor of Professor Fredy Molano, who made a great contribution to the knowledge of Gerromorpha from Colombia.
The species inhabits mangrove lagoons in Buenaventura Bay, Valle del Cauca Department, Pacific region of Colombia (Figs
Modified from
1 | Antennomere II longer than antennomere III; antennomeres II–III of male distally widened | Metrobates |
– | Antennomere II subequal in length or shorter than antennomere III; antennomeres II–III of male not distally widened | 2 |
2 | Antennomere III 10–85% longer than antennomere I | 3 |
– | Antennomere III 40–80% of length of antennomere I | 6 |
3 | Antennomere III shorter than two times the length of antennomere II | 4 |
– | Antennomere III longer than two times the length of antennomere II | 5 |
4 | Interocular space with a dark longitudinal stripe | Telmatometroides |
– | Interocular space without a dark longitudinal stripe | Lathriobatoides |
5 | Antennomere IV not the longest; male fore tarsus unmodified, cylindrical; freshwater habitats | Telmatometra |
– | Antennomere IV the longest; male fore tarsus modified (Fig. |
Telmatometropsis gen.nov. |
6 | Antennomere I much longer than antennomeres II–III together | Trepobatoides |
– | Antennomere I at most as long as antennomeres II–III together | 7 |
7 | Mid tibia distinctly shorter than length of body | Ovatametra |
– | Middle tibia almost as long as or slightly longer than length of body | 8 |
8 | Eye in lateral view not extending beyond half of propleuron; hind tibia distinctly shorter than two times the length of hind tarsus | Trepobates |
– | Eye in lateral view extending beyond half of propleuron; hind tibia longer than two times the length of hind tarsus | Halobatopsis |
The municipality of Buenaventura has a monomodal precipitation regime, with a tendency to bimodality. The highest precipitation values occur between the months of September and October, while the lowest values are observed between February and March, with an average annual precipitation of 7400 mm and an average temperature of 25.9 °C. These very particular climatological characteristics generate a very humid and warm climate (
The new genus herein described has a unique feature, the strongly modified male fore tarsomere II, which in other Neotropical trepobatines is elongated and cylindrical. The distribution of Telmatometropsis gen. nov. partially overlaps with that of Telmatometroides. However, these two genera apparently do not share the same microhabitats, since they have not been collected together. The new genus probably also occurs in the departments of Chocó and Nariño, both in the Colombian Pacific region and where several mangroves are found.
We thank Dr. Enrique Vera, Dr. Yaneth Pineda and Jazmith Espinosa (INCITEMA–