Raggophyllum Nickle, 1967

Figures 2–13

Raggophyllum Nickle, 1967: 7; Otte, 1997: 190; Chamorro-Rengifo & Lopes-Andrade, 2014: 151–199; Cigliano et al., 2020 (online catalog).

Diagnosis. Concealed male genitalia with large titillator as a pair sclerites hook–shaped, which protrude from the abdomen and enveloped by subgenital plate and styles (Figs. 6E–F, 11E–F); styles elongated, laterally flattened and curved (Figs. 3K, 8K), rendering a unique aspect to this katydid among Microcentrini genera. Tympanum partially closed (Figs. 3F – 8F). Internal male genitalia with apodemes sclerites long, narrow sclerites, curved and protruding above ejaculatory vesicles (Figs. 6A–D, 11A–D).

Redescription. Head dorsally rounded and frontally flat, in lateral view (Figs. 3D, 8D). Frons, clypeus and labrum smooth in frontal view (Figs. 3B, 8D). Compound eyes globular (Figs. 3B–C, 8B–C). Fastigium-vertex short and conic in frontal view (Figs. 3B, 8B). Pronotal disc rectangular, without carina, with small bristles, anteriorly slightly concave, laterally straight, and posteriorly convex, in dorsal view (Figs. 3B–C, 8B–C). Pronotal disc without spots (Figs. 3C–D, 8C–D). Dorsolateral suture sinuose (Figs. 3C–D, 8C–D). Dorsolateral and furcal sutures light brown (Fig. 3C–D, 8C–D). Lateral lobe of pronotum anteriorly straight and posteriorly convex (Figs. 3D, 8D). Mesobasisternum triangular, anteriorly straight (Figs. 3E, 8E). Tegmina elongated (Figs. 4, 9). Vein R with straight branches, parallel and with several small bifurcations; vein CuA with several bifurcated branches; vein MP with two bifurcated branches reaching wing margin (Figs. 4, 9). Left stridulatory file convex (Figs. 5A, 10A). Right stridulatory file sinuous, convex at base and median region, distally concave (Figs. 5B, 10B). Teeth from both rows short, narrow and very close to each other; basal teeth and apical teeth smaller and gradually increasing in length towards median region (Figs. 5A–B, 10A–B). Tympanum partially closed (Figs. 3F – 8F). Fore femur straight, with three ventral spines (Figs. 3F – 8F). Fore tibia with five ventral spines (Figs. 3F – 8F). Mid femur straight with two ventral spines (Figs. 3G – 8G). Mid tibia straight, with basal region slightly expanded, two dorsal spines and twelve ventral spines (Figs. 3G – 8G). Hind femur straight, with expanded base and with small black ventral spines (Figs. 3H – 8H). Hind tibia slightly curved, ventral margin medially with numerous small thick and curved spines (Figs. 3H – 8H). Apex of cercus expanded, with an inward laminar projection with a row of small black triangular teeth (Figs. 3I–J, 8I–J). Subgenital plate small, with apex bifurcated between base of stylus, with convex recess in ventral view (Figs. 3I – 8I). Styles elongated, laterally flattened and curved (Figs. 3K, 8K). Internal male genitalia with large titillator a double hook-shaped sclerite, which protrudes out of the abdomen and is enveloped by the subgenital plate and styles (Figs. 6E–F, 11E–F). Ejaculatory vesicle reniform with short ejaculatory ducts (Figs. 6A–D, 11A–D). Dorsal lobes curved, posteriorly rounded (Figs. 6A–D, 11A–D). Apodemes sclerites long, narrow sclerites, curved and protruding above ejaculatory vesicles (Figs. 6A–D, 11A–D). Titillator process elongated and asymmetrical (Figs. 6C–D, 11C–D). Dorsal fold short, wide and with rounded apex (Figs. 6C–D, 11C–D). Upper folds of ventral lobe wide, with rounded apex (Figs. 6A–B, 11A–B).

Distribution. Brazil (new record) and Peru (Fig. 13).

Included species.

Raggophyllum spinosum (type species).

Raggophyllum rubrofemoratum sp. nov.

Key to males of Raggophyllum

(Fig. 2)

Comments. Raggophyllum species distribution is restricted to Inambari, the second larger Amazonian area of endemism, comprising 1.327.00 km², limited to the north by the Amazon river, to the south by the Madeira river and southwest by the Andes mountain range (Da Silva et al., 2005) (Fig. 13). Information on invertebrate groups associated with this area is scarce. Thus, this is the first study that associates a group of katydids with this region.