Milenascopia, Queiroz & Rafael, 2019

Queiroz, Larissa Lima De & Rafael, José Albertino, 2019, Milenascopia gen. nov. (Orthoptera: Proscopiidae) from the Brazilian Amazon Basin and a pictorial key to Proscopiini genera, Zootaxa 4603 (2), pp. 265-288 : 268-270

Milenascopia gen. nov.

Type species: Milenascopia bilineata gen. nov., sp. nov. (pres. desig.).

Etymology. Feminine name. Milena , in honor to the memory of Milena Lima de Queiroz , daughter of the senior author; scopia, referring to the generic termination of several Proscopiidae genera.

Diagnosis. Clypeum with anteromedian concavity (figs 4A–B, 12A–B). Maxillary palpus with conspicuous mesial emargination at apex of last segment (figs 4B, 12B). Posterior femur dorsally with two longitudinal parallel carinas, forming conspicuous sulcus between them (fig. 3A, 11A). Pallium with V-shaped anterior margin, (figs 5C–D, 13C–D). Male genitalia: epiphallic membrane conspicuous (fig. 6E); transverse sclerite and lophi fused (figs 6A–B, 14A–B); lophi in dorsal view with basal third thin and convex, medial third dilatated, apical third hookshaped, conspicuously pigmented; medial third + apical third reniform (figs 6A–B, 14A–B); ectophallic valves conspicuous, elongated, well pigmented, in dorsal view with thin base, gradually widening at lophi’s height (figs 6A–C, 14A–C); sublophal sclerites and articulated sclerites present bellow the epiphallus (figs 6C, 14C), with the latter subcircular, conspicuously microsetose (figs 6C, 14C–D); distal sac of endophallus well developed, sclerotized, well pigmented, conic, with base thinner than apex, having approximately half-length of genitalia (figs 6B, D, 14B, D–F); proximal sac of endophallus conspicuous, wrapping the distal sac of endophallus (figs 6A–D, 14A–D), covered by small scale-like structures (fig. 14F). Ejaculatory duct cylindric, sigmoid, slightly sclerotized, approximately with same genitalia length, sharp at base inside the distal sac of endophallus, widening and maintaining wide for almost its remaining length, sharping again at apex (figs 6F). Female genitalia: copulatory chamber membranous, translucid; duct of spermatheca sinuous, single, without digitiform expansions, widening towards sclerotized apical diverticula; apical diverticula single, elongated, wider than duct of spermatheca apex (fig 9C).

Description. 3 (figs 3A–C, 10A, 11A–C) Body slender, with general coloration dark brown (dry).

Head. Rugose, shiny, elongated, conic, without constriction underneath eye, with base two times wider than width underneath eyes (figs 3A–C, 11A–C), slender in lateral view (figs 4D, 12D). Fastigium in dorsal view with widened base, lateral margin straight, gradually narrowing towards apex; apex at least six times thinner than base; at least 1.8 times longer than wide (figs 4C, 12D); in lateral view directed dorsofrontally, having longitudinal medial carina. Vertex rugose, brown (figs 3A, 11A). Gena with light yellow spots at transverse ridge of frons height (figs 4D, 12D). Frontal carina conspicuous (figs 4C, 12C). Frons with transverse ridge conspicuous, triangular; lateral margin nearly straight, with light yellow spot medioapically (figs 4A–C, 12A–C). Clypeum with basal margin sinuous, with lateral projections, apical margin emarginated medially (figs 4A–B, 12A–B). Labrum asymmetric, left half higher, lateral margin slightly convex, abruptly curving in apical margin; medial suture conspicuously arched (figs 4A–B, 12A–B). Compound eye globose, black, light brown spoted (dry), approximately 2.4 times higher than median width of vertex (figs 4C–D, 12C–D). Ocelli inconspicuous. Maxillary and labial palpi setose, flattened dorsoventrally (figs 4B, 12B). Maxillary palpomeres 1–4 subquadrangular; last palpomere with conspicuous mesial emargination (figs 4B, 12B).

Thorax. Prothorax cilindrical, granulated (figs 3A–C, 4E, 11A–C, 12E). Pronotum at least 8.5 times longer than mesonotum (figs 3B, 11B), with conspicuous pleurosternal suture. Proepisternum with basal margin straight, lateral and apical margins conspicuously convex. Meso- and metanotum mediolongitudinally rugose (figs 3A, 11A). Mesoscutum with basal margin slightly convex, lateral margin sinuous, apical margin conspicuously convex. Mesoepi- sternum elongated, approximately two times longer than mesoepimeron; basal half granulated, gradually becoming smooth towards apical half; basal and apical margins convex, lateral margin straight. Mesoepimeron subrectangular, with base wider than apex, smooth, with basal, lateral and apical margins straight. Metascutum with convex base, narrower than apex; lateral margin with emargination at basal third, apical margin convex; mediolongitudinally with rugosity, which gradually widens towards apex. Metaepisternum elongated. Metaepimeron subtriangular, with slender base, widening towards apex. Prosternum concolor to pronotum, furca and furcal suture conspicuous (figs 3C, 5A, 11C, 13A). Meso- and metasternal processes conspicuous (figs 5B, 13B). Metabasisternum with basal margin convex, lateral and lateroapical margins straight, apical margin emarginated; espinasternum inconspicuous (figs 5B, 13B).

Legs. Anterior leg with inconspicuous scattered dorsoventral spines from base of femur to apex of tarsus; tibia quadrangular in transversal section; with conspicuous antero- and posteroventral spine rows (figs 3A–C, 11A–C). Mid leg similar to anterior leg. Posterior leg with femur rugose, narrowing towards apex, dorsally with two longitudinal parallel carinas, forming sulcus between them; with inconspicuous projections at anterodrosal and anterolateral margins, near the trochanter; ventrally with two longitudinal rows of inconspicuous spines; tibia with inconspicuous spines in all edges; in dorsal view anteriorly and posteriorly with conspicuous spines from base to apex; ventrally with row of small setae at base.

Abdomen. Smooth, opaque, dark brown with light brown spots (figs 3A–C, 11A–C). Tergite 1 with basal margin having two parallel convections and concavity between them; lateral margin straight, apical margin convex (figs 3A, 11A). Tergites 2–7 rectangular in dorsal view, with all margins straight, gradually decreasing in length and width (figs 3A, 11A). Tergite 8 in dorsal view with basal margin convex, lateral straight and apical margin concave (figs 3A, 11A); trapezoidal in lateral view, with all margins straight, at least 1.5 times longer than high (figs 3C, 5D, 11C, 13D). Tergite 9 subtriangular (figs 5D, 13D). Tergite 10 with basal margin straight, lateral and apical margins convex (figs 5D, 13D). Epiproct with convex anterior margin, short, gradually widening at the straight lateral margin; distal half dome-shaped (figs 5C, 13C). Pallium light yellow, anterior margin concave, V-shaped (figs 5C–D, 13C–D). Cercus rugose, setose, having rounded apex (figs 5C–D, 13C–D). Sternite 1 with concave base and apex medially convex (figs 3C, 11C). Sternites 2–7 with same shape and concolor to tergites 2–7 (figs 3C, 11C). Sternite 8 rectangular, with all margins straight, 1.7 times longer than wide (figs 5E, 13E). Subgenital plate spoon-shaped in lateral view (figs 5D, 13D); in ventral view with basal and lateral margins straight, apical margin conspicuously convex, with several scattered setae (figs 5E, 13E).

Genitalia. Transverse sclerite, lophi, phallotreme, ectophallic valves, sublophal sclerites and articulated sclerites present. Transverse sclerite and lophi fused (figs 6A–B, 14A–B). Transverse sclerite slender, basal margin convex, having undulations next to lateral margins; apical margin convex, having undulations next to lateral margins (figs 6A–B, 14A–B). Lophi in dorsal view with basal third thin and convex; medial third dilatated, apical third hook-shaped, well pigmented; medial + apical thirds reniform (figs 6A–B, 14A–B). Phallotreme membranous, conspicuous. Ectophallic valves conspicuous, elongated, well pigmentated (figs 6B, 14B), in lateral view with base wider than apex (fig 14E), gradually narrowing towards apex at lophi’s height. Sublophal sclerites asymmetrical, located behind epiphallus (figs 6C, 14C). Articulated sclerites subcircular, asymmetrical, with right half with numerous microsetae and conspicuous longitudinal rift (figs 6C, 14C–D). Distal sac of endophallus well developed, sclerotized, well pigmented, conic, with base thinner than apex, approximately half length of genitalia (figs 6A–D, 14A–D), covered by small scale-like structures (fig 14F). Ejaculatory duct cylindrical, sigmoid, slightly sclerotized, approximately same genitalia length, narrower at base inside distal sac of endophallus, widening and maintaining wide along for almost entire length, proximal sac of endophallus narrowing again at apex (fig 6F)

Description ♀ (7A–C, 10B). As in male, except for stouter body, light brown with dark brown spots (dry). Furthermore:

Head. With dark brown spots (figs 7A–C), in dorsal view with base 2.5 times wider than frons width under the eyes (fig 7A). Fastigium in dorsal view with lateral margin inconspicuously sinuous; having dark brown convex spot near apex (fig 8C); sword-shaped in lateral view, with apex at least three times shorter than base (fig 8B). Gena light brown with dark brown spots (fig 7B). Transverse ridge of frons and epistomal suture without light yellow spot (fig 8A). Compound eye small in relation to head, with height approximately the same of median width of vertex (figs 7A–C).

Thorax. Pronotum at least seven times longer than mesonotum (fig 7A). Mesoscutum with basal margin slightly convex, lateral margin sinuous, apical margin slightly convex (fig 7A). Mesoepisternum granulated, elongated, ap- proximately 1.5 times longer than the rugose mesoepimeron; with right lateral margin convex, base as wide as apex (fig 7A). Metascutum with basal margin slightly convex; lateral margin with basal third straight, median and apical thirds convex; apical margin sinuous; mediolongitudinal rugosity with uniform width. Metaepisternum elongated. Metaepimeron subtriangular, with slender base, widening towards apex. Mesobasisternum rugose, subrectangular, with basal, lateral and apical margins straight (fig 7C). Metabasisternum less rugose than mesobasisternum, with basal margin straight; espinasternum conspicuous (fig 7C).

Abdomen. Tergite 1 with basal, lateral and apical margins straight (fig 7A). Tergite 8 in lateral view at least 1.3 times longer than high (fig 8E). Cercus conic (figs 8D–E). Epiproct ventrally with spines. Paraproct almost two times longer than cercus length (fig 8E), anterior lateral margin with spines. Third valve pair elongated, rugose, shiny (figs 8D–E), without spouts, with several setae at anterior right margin in dorsal view (fig 8D); in lateral view with dark brown spots, blade-shaped, with dorsal margin at basal and medial third slightly concave, elevating next to apical third, where it again becomes concave towards apex (fig 8E); in ventral view with base dark brown (fig 9B). Second valve pair light brown, shiny, approximately 3.5 times shorter than third valve pair (fig 8E); in dorsal view with setae; anterior lateral margin with basal and medial third straight; posterior lateral margin with concavity at medial third; lateroapical portion forming 45º angle (fig 9B); in lateral view with wide base, gradually narrowing towards apex (fig 8E). First valve pair elongated, rugose, shiny (figs 8E, 9A–B); in dorsal view with conspicuous medial longitudinal carina, anterior lateral margin membranous, posterior lateral margin straight (fig 9B); in lateral view with same shape, but upside down of third valve pair having conspicuous setae at posterior portion (fig 8E); in ventral view with dark brown spots; basal and medial third with posterior lateral margin with conspicuous carina, deepening into conspicuous ellipsoid sulcus at anterior lateral margin (fig 9A). Basivalvar sclerite opaque, with dark brown spots, in lateral view with light medial emargination at dorsal margin, apex rounded, ventral margin with spines at apical third (fig 8E). Subgenital plate with dark brown spots, base gradually widening towards apex; basal and lateral margins straight, apical margin medially convex; having subtriangular spot at the projection’s area (fig 9A).

Genitalia. Copulatory chamber membranous, translucid; duct of spermatheca sinuous, single, without digitiform expansions, widening towards apical diverticula; apical diverticula single, slightly sclerotized, elongated, wider than duct apex (fig 9C).

Geographical records. BRAZIL: Amazonas: Iranduba and Tefé (fig 2).