New species of the genus Caloxiphus Saussure & Pictet, 1898 (Orthoptera: Tettigoniidae) from the Huasteca Region, Hidalgo, Mexico Author Barrientos-Lozano, Ludivina Author Fernández-Azuara, Geovany J. Author Rocha-Sánchez, Aurora Y. Author Zaldívar-Riverón, Alejandro Author Sánchez-Reyes, Uriel Jeshua Author Almaguer-Sierra, Pedro text Zootaxa 2020 2020-03-17 4751 2 333 344 journal article 10.11646/zootaxa.4751.2.8 12109b72-c85b-446a-9831-5908f93ca4db 1175-5326 3713154 B12915CB-882D-4B7D-A52C-A2CE853B9ABB Caloxiphus cuicani n. sp. Barrientos-Lozano & Fernández-Azuara ( Figs. 11 –30) urn:lsid:zoobank.org:act: 77B65162-423D-461C-BDEC-FCB0139542CC Examined material. Holotype ♂ . Mexico , Hidalgo , Huazalingo , Tlamamala , 1300masl , 09.X.2015 . 20°58’14.0’’N 98°32’52.3’’W , leg. Fernández-Azuara G. J. Paratypes . 1 ♂ , 2 ♀ , same data as holotype . Diagnosis. C. cuicani n. sp. , may be compared also with C . championi (see Cigliano et al., 2020 ; http://orthoptera.speciesfile.org/Common/basic/ShowAllImages.aspx). It differs from the latter species as follows: larger size (males 28.5 ± SD 0.2 mm : females 34.0 ± SD 1.7 mm vs. 25 mm C. championi females) ( Figs. 11 , 21 : 22, 30). Tegmina are shorter (males 13.1 ± 0.05: females 14.6 ± 1.5 mm vs. 18.5 mm in C. championi females) in lateral view they are lanceolate and the distal apex is more acute ( Figs. 11 , 21 , 22 , 30). Pronotum ( Figs. 14a, 14b , 25 ) is broader, more densely granulated and granules are more conspicuous; both, the anterior and posterior margins are moderately produced and possess each a small size tubercle about mid-portion. Females’ cerci, subgenital plate, and carinae on ovipositor are also different ( Figs. 27–29 ) from C. championi (see Cigliano et al., 2020 ; http://orthoptera. speciesfile.org/ Common/basic/ ShowAllImages.aspx). Male description ( Figs. 11–21 ). General body color ( Figs. 11 , 21 ) brownish with dark green marks on face, pronotum, abdomen, and legs. Fastigium of vertex ( Fig. 12 ) sub-triangular, proximally broader, distally rounded, distal portion reaches about same length than the antennal sockets, broad and deeply sulcate along midline; fastigium frontalis ( Fig. 13 ) yellowish sub-conical, proximal portion quite broad, distally produced. Antennae brownishcrème with dark brown-black segments intercalated. Head ( Figs. 12, 14a , 21 ) dorsally light to dark brown with two postocular lateral crème bands, one each side. Pronotum ( Figs. 14a, 14b , 21 ) rounded, dorsally dark brown-green color coarsely granulated, anterior and posterior margin weakly produced, moderately emarginated bearing each a tubercle about mid portion; posterior margin’s tubercle more prominent. The dorsal main sulcus cuts deeply the lateral carinae and the lateral lobes. Lateral lobes of pronotum ( Figs. 11, 14b , 21 ) light-brown-crème color with dark green areas, strongly emarginated, head-angle almost rect, posterior rounded obtuse-angulated. Tegmina ( Figs. 11 , 21 ) lanceolate, mostly brown color with crème veins and veinlets, short about mid-length of abdomen; stridulatory area ( Fig. 15 ) dark-brown yellowish color with broad crème-brown veins; stridulatory file ( Fig. 16 ) basal portion broad tapering gradually towards the anal end, length 3.6 mm , 98–102 teeth. Legs brownish-creme with dark-greenblack ornamentation. Femora spines: anterior inner face 3 spines, external face without spines; mid internal face without spines, external face 2 spines; posterior internal face without spines, external face 7 large spines on lower margin. Tibiae spines: anterior inner face 8 small spines, external face 8 spines on lower margin; mid internal face 5 spines on upper margin and 8 on lower margin, external face 8 spines on lower margin; posterior internal face 19 spines on upper margin and 13 on lower margin, external face 15 spines on upper margin and 13 on lower margin.. Cerci ( Figs. 17–18 ) basally broader tapering gradually, curved inwards, black rounded apex. Supraanal plate ( Fig. 17 ) sub-hexagonal, posterior margin sinuous, left and right angles broad, produced, and possess a small tubercle each. Subgenital plate and internal genitalia as shown in Figs. 18–20 . FIGURES 11–20. Caloxiphus cuicani n. sp. , male. Fig. 11. habitus. Fig. 12. fastigium of vertex, dorsal view. Fig. 13. fastigium frontalis. Fig. 14a. pronotum, dorsal view. Fig. 14b. pronotum, lateral view. Fig. 15. stridulatory area, dorsal view. Fig. 16. stridulatory file on underside of left tegmen. Fig. 17. terminalia, cerci, supraanal plate, and subgenital plate, dorsal view. Fig. 18. subgenital plate and cerci, ventral view. Fig. 19. internal genitalia, dorsal view. Fig. 20. internal genitalia, ventral view FIGURE 21. Caloxiphus cuicani n. sp. , male alive. Female description ( Figs. 22 –30). General appearance similar to the male. Body color ( Figs. 22 , 30) brownpinkish, dark green marks on face, pronotum, legs, and abdomen. Fastigium of vertex ( Fig. 23 ) light brown-crème sub-triangular, distally rounded, surpassing slightly the antennal sockets, broad and deeply sulcate along midline; fastigium frontalis ( Fig. 24 ) yellowish sub-conical, broad and rounded proximally. Antennae brownish-crème with dark brown-black segments intercalated. Head dorsally brown with two delicate postocular lateral crème bands, one each side. Pronotum ( Figs. 25–26 ) rounded, dorsally light brown-pinkish color, dense and coarsely granulated, anterior and posterior margin weakly produced, moderately emarginated bearing each a tubercle about mid portion; anterior margin’s tubercle smaller. The dorsal main sulcus cuts deeply the lateral carinae and the lateral lobes. Lateral lobes of pronotum ( Fig. 26 ) pinkish to light-brown color with dark green areas, lower margin strongly emarginated, head angle almost rect posterior rounded obtuse-angulated. Tegmina ( Figs. 22 , 30) lanceolate (lateral view) brownish-pink color, short about mid-length of abdomen. Legs pinkish-crème color with dark-green ornamentation. Femora spines: anterior inner face 3 spines, external face without spines; mid internal face without spines, external face 2 spines; posterior internal face without spines, external face 7 spines on lower margin (6 large: 1 small). Tibiae spines: anterior inner face 8 small spines, external face 8 spines on lower margin; mid internal face 4 spines on upper margin and 8 on lower margin, external face 8 spines on lower margin; posterior internal face 22 spines on upper margin and 13 on lower margin, external face 12 spines on upper margin and 15 on lower margin. Cerci ( Figs. 27, 29 ) basally broad, tapering gradually, the distal third curved inwards, spine like acute apex. Supraanal plate ( Fig. 27 ) sub-quadrate. Subgenital plate and ovipositor as shown in Figs. 28–29 . Measurements (mm). Males. Body length, from vertex anterior margin mid portion to end of abdomen, 28.5 ± 0.15. Pronotum length, from anterior to posterior margin along midline, 5.0. Tegmina length, 13.1 ± 0.01. Femora anterior, mid, and posterior length, respectively: 9.9 ± 0.09, 9.3 ± 0.01, 18.1 ± 0.02. Females. Body length, from vertex anterior margin mid-portion to end of abdomen, 34.0 ± 1.7. Pronotum length, from anterior to posterior margin along midline, 5.5 ± 0.2. Femora length, anterior, mid, and posterior, respectively: 10.6 ± 0.2, 10.3 ± 0.2, 21.1 ± 2.8. Length of tegmina, 14.6 ± 1.5. Length of ovipositor, 16.2 ± 0.03. Distribution (Fig. 31). C. cuicani n. sp . , is known only from its type Locality “Tlamamala, Huazalingo” at the Huasteca Region in the State of Hidalgo , Mexico . Habitat. C. cuicani n. sp. , inhabits the Biogeographical Province of the Eastern Sierra Madre (ESM) at the Huasteca Region in the State of Hidalgo , Mexico . Climate in the area is warm-humid, average annual temperature and precipitation are 21°C and 2,350 mm , respectively. The main plant association is cloud forest, intermediate ecosystem between tropical and temperate forest. Specimens of C. cuicani n. sp . , were collected on leaves of Conostegia xalapensis (Bonpl.) D. Don ex D.C., also known in the region as “capulín de monte” ( Melastomataceae ), a plant from which they also feed on. Etymology. Specific epithet “ cuicani ” derives from the “Náhuatl”, one of the indigenous languages spoken at the Huasteca Region in the State of Hidalgo , Mexico . “Cuicani” means “singer”; specimens of C. cuicani n. sp. , rest on branches and leaves of host plants, and it is because of its acoustic signal that they are located and collected mostly at night. Acoustic Signal (Figs. 32–34). Males of Caloxiphus cuicani n. sp. , produces a short, low intensity calling song (Fig. 32). Males may sing for a few seconds or minutes and stop to resume singing after a short or a long interval. The acoustic signal is made up of echemes of one, two, or three syllables. We analyzed 26 min recording of the calling song and obtained 97 echemes (53 of one syllable, 34 of two syllables, and 10 of three syllables). Echemes repetition rate (ERR) was 3.7 echemes/min. Duration of echemes made up of one, two, and three syllables is as follows: 6.6 ± (SD) 0.8 ms, 2.3 ± 0.5 s , 6.6 ± 1.9 s , respectively. There is no major variation amongst duration of syllables in echemes of one, two, and three syllables; so syllables duration averaged 6.7 ± 0.3 ms ( n = 149). Major interval (MaI) duration averaged 76 ± 14 s (2–111 s) ( n = 59), this variation may be explained by the fact that when males produce two or three syllable-echemes the MaI between echemes is shorter, similarly the males may sing for a few seconds and stop to resume singing after a considerable interval of time. Minor Interval (MiI) between syllables in echemes of two or three syllables was 2.1 ± 0.8 s ( n = 63). Frequency range is>100 kHz with three peaks in this frequency spectrum, and a fi peak between 12–26 kHz (Figs. 33–34).