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Eubliastes viridicorpus Woodrow & Montealegre-Z 2023, sp. nov.
No full textEubliastes viridicorpus sp. nov. Material examined. - Holotype: COLOMBIA • Ƌ; Sabaletas, Buenaventura, Valle del Cauca, Colombia; (3.741569 N, 76.967294 W); F Montealegre-Z; IAVH. Allotype: COLOMBIA • ♀; Sabaletas, Buenaventura, Valle del Cauca, Colombia; (3.741569 N, 76.967294 W); F Montealegre-Z; IAVH; captured as subadult juvenile, attempt to rear to adult in captivity successful but fall during final molt resulted in loss of hindlegs and damage to ovipositor (folded in half laterally, but recoverable for identification and suitable illustrated reconstruction) and wings (completely damaged). Head, thorax, and forelegs not damaged by failed molt. Type locality. - Sabaletas, Buenaventura, Valle del Cauca, Colombia. Etymology. - Meaning ‘green body’ named after the bright colours which differentiate the species from other Eubliastes spp. Diagnosis. – E. viridicorpus is placed within the genus Eubliastes due to darkened dorsal surface of head and pronotum; long elytra with yellow venation; gradually compressed pronotum with anterior granulation and thick lateral margins. There are nine other valid species in the genus Eubliastes (Cigliano et al., 2023). In E. viridicorpus, there is a distinct U-shaped marking at the base of the frons, the corners of which point to the base of the eyes, and two dots centrally. The dorsal margin of the frons has further markings which are continuous from left to right eye. Other features of E. viridicorpus which diagnose it from the other nine species include the unique globular shape of the male cerci, which display a single spine on the inner ventral edge rather than the cercal tip, and the sharp angle between the male subgenital plate and the elongate styli (For measurements, see Table 1). Description. – Head: around 1.4x longer than wide, with eyes that do not extend far beyond the gena laterally. Postclypeus (dorsal clypeus) black. Dorsal frons and gena black. Frons with distinct U-shaped marking ventrally and two dots centrally (Fig. 1A and B). Thorax: Mostly vivid green in colour, with beige/amber moving ventrally, and black markings on dorsal margins of all leg coxae (Fig. 1C). The acoustic spiracle in the prothorax is small as expected for the subfamily, and kidney bean shaped (Fig. 1C). Legs: Forelegs and midlegs dorsally unarmed, ventrally with four pairs of spines on tibiae. Foretibae bearing large tympanal organ with wide pinnae, and eight pairs of ventral spines, with first pair distal of the tympanal organ. All legs reddish-brown with vivid green towards coxae. Midfemur and hindfemur with light beige/amber band towards distal end before joint. Beige/amber band contains dark spots, 5–7 in sequence on all femurs. Mid- and hindfemur spines light beige/amber at base, black at tip. Hindfemur armed with ten ventral spines. Hindtibiae armed with 12 pairs of spines ventrally and 17 dorsally. Genicular lobes rounded and without dark pigmentation. Wings: Large, extending distally beyond terminalia but not beyond hindlegs (Fig. 1D). Striking yellow venation pattern. Within-cell tegminal colour black rather than the vivid light green of E. chlorodictyon (Montealegre-Z and Morris, 1999), or the ochraceous tawny brown of other members of the genus (Fig. 1C). Male stridulatory field large and circular, with strongly raised CuPb vein and stridulatory file. Stridulatory file with 262 teeth. Wings shorter than E. pollonerae (Beier, 1960). Abdomen: Follows colour pattern of thorax, with mostly vivid green colour dorsally, with beige/amber moving ventrally. Lacks black markings as seen on thorax. Terminalia: Male: subgenital plate elongate without strong emargination, centrally depressed (Fig. 1E (i)), with two long styli. 10th tergite truncate with central emargination (Fig. 1E (ii). Cerci large, beige/white, and robust, with curved spine on inner edge (Fig. 1E (iii)). Styli at unique obtuse angle with subgenital plate (Fig. 1E (iii)). Female: subgenital plate isosceles triangular with rounded subbasal lobes and pronounced soft V-shaped emargination (Fig. 1F (i)). Cerci cream white, pointed with spine (Fig. 1F (ii)). Ovipositor broad, smooth with distal serrations dorsally, and four lateral notches; reddish-brown and basally amber/ beige (Fig. 1F (iii)). Coloration. – In live animal colours unusually bright for genus (Fig. 1C). Dorsal pronotum and head a cordovan brown colour, with a lateral gradient typical of the genus. Ventral edges of pronotum, head, and most of body a vibrant green. Frons a deeper vibrant green. Wing venation electric yellow. Within-cell tegminal colour black. Large male cerci and distal patch on hind femur matching in light beige. Bases of spines on hind femur also beige. Markings on face and legs black. Comments. – In Beier’ s key to the genus and more recent descriptions, this species has dorsally unarmed middle tibiae, and the anal margins of the tegmina are not darkened, placing it closely with E. chlorodictyon. The next character choice is based on the pronotum, which will either have black, reddish-brown, or light amber lateral lobes. E. viridicorpus does not fit any of these descriptions, with vivid green lateral pronotal lobes (Fig. 1C). E. viridicorpus is most similar in overall morphology to E. chlorodictyon (Montealegre-Z and Morris, 1999), but displays distinct features which we have used to distinguish E. viridicorpus as a new species. Frons of E. viridicorpus displays additional markings absent in E. chlorodictyon. E. viridicorpus larger than E. chlorodictyon, with eyes smaller relative to the head width. Face markings distinct from E. aethiops, which has two marks extending down from the eyes, and three markings on the ventral frons. Male subgenital plate much shorter than E. chlorodictyon, lacking the V-shaped emargination, with longer styli than E. chlorodictyon. Sharp angle between the male subgenital plate and the elongate styli in E. viridicorpus is similar to E. adustus but styli much shorter. Male cerci substantially more robust in E. viridicorpus than any other members of the genus, with spine located on inner edge rather than cercal tip. Male subgenital plate and styli similar to E. festae but cerci more elongate in E. festae than E. viridicorpus, with larger final abdominal tergite in E. festae. Female ovipositor much larger and broader in both E. ferrugineus and E. pollonerae than E. viridicorpus. Ovipositor less elongate in E. viridicorpus than E. conspersus. Female ovipositor is instead most similar to E. apolinari, but with four short oblique ridges rather than five. Female subgenital plate smaller and less ventrally protruding than E. ferrugineus and E. pollonerae.Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on pages 96-97, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception
No full textWoodrow, Charlie, Montealegre-Z, Fernando (2023): Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception. Zoologischer Anzeiger 304: 94-104, DOI: 10.1016/j.jcz.2023.04.002, URL: http://dx.doi.org/10.1016/j.jcz.2023.04.00
Eubliastes Beier 1960
No full textGenus Eubliastes Beier, 1960. Type species. — Eubliastes ( synonym: Cocconotus) adustus (Bolívar, 1881).Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on page 96, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
The spider-like katydid Arachnoscelis (Orthoptera: Tettigoniidae: Listroscelidinae): anatomical study of the genus
No full textMontealegre-Z, Fernando, Cadena-Castañeda, Oscar J., Chivers, Benedict (2013): The spider-like katydid Arachnoscelis (Orthoptera: Tettigoniidae: Listroscelidinae): anatomical study of the genus. Zootaxa 3666 (4): 591-600, DOI: 10.11646/zootaxa.3666.4.1
Eubliastes spp
No full text4.2. Acoustics of Eubliastes spp. The song of E. viridicorpus is classic for members of the Cocconotini, showing discrete pure tone pulses with a similar envelope structure to other pseudophyllines (Baker et al., 2019; Stumpner et al., 2013) peaks at 23.4 kHz and is most similar to that of E. aethiops, which is also comprised of two syllables at a similar peak frequency (23.9 kHz, Fig. A1). However in E. aethiops the frequency spectrum has a wider bandwidth of 11.9 kHz (20 dB below the peak) compared to 2.2 kHz in E. viridicorpus, and does not show the additional frequency component towards 12 kHz as seen in E. viridicorpus. This song peak frequency range seems to be characteristic of the genus with E. chlorodictyon and E. pollonerae singing at and 25.4 and 25.5 kHz respectively (Figs. A2,A 3; Montealegre-Z and Morris, 1999; ter Hofstede et al., 2020).The same could be said of the two syllable temporal pattern of the song, but more recordings of other extant species (acoustic data is currently only available for four species) would be beneficial for future comparisons. The song of E. viridicorpus is also interesting in that the high amplitude component is at the start of each syllable rather than the end. This is similar to the song structure of E. chlorodictyon (Montealegre-Z and Morris, 1999), but differs from E. aethiops (Fig. A1) and E. pollonerae (ter Hofstede et al., 2020). This difference is not due to differences in stridulatory file anatomy, but instead indicates that the pattern of wing motion during stridulation differs, as the loudest component of the signal is produced during wing closure (Montealegre-Z., 2005; Montealegre-Z et al., 2006; Nielsen and Dreisig, 1970). Although tremulation was observed in the field, we were not able to record tremulatory signals in the laboratory. We hypothesise that E. viridicorpus utilises wing velocity to generate the lower peak of the song spectrum, but with a mirror tuned to the higher frequency peak of the spectrum (the first order harmonic) to optimise energy use.Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on page 101, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
Fig. 1 in Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception
No full textFig. 1. Eubliastes viridicorpus sp. nov. A. male face; B. female face; C, male alive; D. illustrated male habitus; E, illustrated male terminalia in ventral (i), dorsal (ii), and lateral (iii) views with lateral view of left cercus (iv); F, female terminalia in ventral (i), dorsal (ii), and lateral (iii) views with lateral close up of ovipositor tip (iv). Note, colours of the face in A and B are an artifact of alcohol preservation, but markings remain accurate. Illustrations by CW.Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on page 97, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
Fig. 3 in Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception
No full textFig. 3. Eubliastes viridicorpus sp. nov. auditory system. A. male auditory system: (left to right) acoustic spiracle, acoustic trachea, auditory pinnae; B. female auditory system (left to right same as A); C. female auditory pinnae resonances; D. male auditory pinnae resonances; E, auditory pinnae resonances across other species of the genus Eubliastes. Abbreviations: Lapc, Left anterior pinna cavity; Rapc, Right anterior pinna cavity; Lppc, Left posterior pinna cavity; Rppc, Right posterior pinna cavity.Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on page 99, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
Fig. 2 in Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception
No full textFig. 2. Eubliastes viridicorpus sp. nov. acoustics. A, dorsal view of male stridulatory apparatus with tegmina closed; B, dorsal view of male stridulatory apparatus with tegmina open; C, male stridulatory file; D, male calling song waveform and spectrogram; E, waveform and spectrogram of single pulse, with high resolution inset of the dual tone waveform; F, male calling song frequency spectrum. Spectrogram parameters: FFT size = 512; Hamming window = 50% overlap; frequency resolution = 500 Hz.Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on page 98, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
Pseudophyllinae Burmeister 1838
No full text4.4. Pinnae in the Pseudophyllinae and Meconematinae It would be sensible to predict, based on these findings, that pseudophyllines which communicate at frequencies beyond the function provided by the acoustic trachea (< 60 kHz; Celiker et al., 2020) may have lost function of the trachea, switching instead to utilising the high amplitude gains of the external auditory pinnae (Pulver et al., 2022) for conspecific sound reception (Mason et al., 1991). Morphological data we are collecting as a wider study of katydid auditory systems supports this hypothesis (Woodrow, unpublished). This is likely to also be the case in the extreme ultrasonic Meconematinae (Supersonus and Arachnoscelis spp.), where calling song frequencies range from ~70 kHz over 150 kHz. Wider comparative studies of auditory trachea and pinnae function, combined with numerical simulation and biophysical experimentation, are in process to develop this hypothesis. Funding CW’ s PhD studentship is funded by the University of Lincoln’ s School of Life and Environmental Sciences. This study was funded by a European Research Council Grant ERCCoG-2017-773067 (to FMZ for the project “The Insect Cochlea”) and an NSF - NERC grant NSF DEB-1937815 - NE/T014806/1 (to FMZ). Author contributions CW conducted micro-CT scans, 3D printing, data collection and analysis, and writing. FMZ conducted song recording, specimen collection, permits, supervised, and oversaw the study.Published as part of Woodrow, Charlie & Montealegre-Z, Fernando, 2023, Auditory system biophysics in a new species of false-leaf katydid (Tettigoniidae: Pseudophyllinae) supports a hypothesis of broadband ultrasound reception, pp. 94-104 in Zoologischer Anzeiger 304 on pages 101-102, DOI: 10.1016/j.jcz.2023.04.002, http://zenodo.org/record/816430
Royal Society Interface curated data.xlsx
No full textDataset containing the data from the paper: The Chemistry of an insect ear: Ionic composition of a liquid-filled ear and haemolymphs of Neotropical katydids
Fabio A. Sarria-S1, Fernando Montealegre-Z1, Jose Gonzalez-Rodriguez2,*</p
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