Rumea manauensis Chamorro-Rengifo & Lopes-Andrade

Chamorro-Rengifo, Juliana & Lopes-Andrade, Cristiano, 2009, The first report of Rumea Desutter, 1988 (Orthoptera: Phalangopsidae: Paragryllini) from Brazil, with the description of three new Amazonian species, Zootaxa 2265, pp. 48-68 : 57-61

Rumea manauensis Chamorro-Rengifo & Lopes-Andrade , sp. nov.

( Figs 5–7 )

Etymology. The specific epithet refers to Manaus, terra typica of this new species.

Diagnosis. The body coloration of this new species is darker than that of R. zebra sp. nov. This new species can be distinguished from the others Rumea by the following combination of characters: (i) face dark yellowish with brownish stripes, the brownish stripes being wider than those of R. zebra sp. nov.; (ii) whitish oval area at the inner margin of each eye larger than in R. zebra sp. nov. and R. tigris sp. nov.; (iii) either side of the anterior and posterior pronotal margins angulated, so that the pronotum has somewhat a square shape when seen from above; male genitalia with (iv) dorsal tip of the longitudinal midline of the pseudepiphallic arm bearing a small rounded lobe, (v) lateral lobes (of the pseudepiphallus) with a boomerang shape (two small lobes projected in opposite directions), visible in dorsal view, (vi) lateral lobes of the pseudepiphallic arm curved outwards, ventrally projected as seen in lateral view, (vii) ectophallic apodemes slightly directed inwards.

Description (holotype male & allotype female). Holotype male: TL 20.45; HF 14.52; HT 11.82; sHT, inner margin 24–25, outer 23–25; sHts, inner margin 3–7, outer 8–9; PL 3.11; PW 3.88; EyeW 1.73; TegL 14.81; TegW 6.21; SL 3.68; NT 153. Allotype female: TL 21.09; HF 14.23; HT 11.29 (left hindleg lacking); sHT, inner margin 23, outer 22; sHts, inner margin 9, outer 9; PL 3.32; PW 3.97; EyeW 1.71; TegL 15.46; TegW 5.69; OL 17.97. General coloration consisting of dark brownish and dark yellowish areas ( Fig. 5 ). Head with robust bristles on the vertex ( Fig. 6 A). Face with dark yellowish coloration, with brownish stripes. Frons with a broad brown stripe from the vertex to the frontoclypeal suture, narrowing from the dorsal to the ventral surface, with a yellowish oval area at the level of each eye; two oblique lateral stripes from below the antennal socket to the frontoclypeal suture, interrupted approximately in the first third above the frontoclypeal suture; each gena with two brownish stripes, one extending from below the eye to the ventral surface of the head, and the second stripe bordering the ventral surface of the head and reaching the postgena. Clypeus whitish, with two greyish lateral marks. Labrum whitish with two indistinct greyish lateral stripes (like shadows), not reaching the ventral margin. Mandibles yellowish, cutting edge dark brownish. Maxillary and labial palps light yellowish. Last palpomere of each maxillary palp dark brownish. Mouthparts in ventral view, excepting the appendages, light yellowish. Each antenna with scape dark yellowish, bearing an irregular dark brownish spot; antennomeres dark yellowish. Dorsal surface of head ( Fig. 6 B) with four brown longitudinal stripes: two stripes originating at the posterior margin and jointed at the eyes level, so that only one thick stripe reaches the anterior margin; two narrower and lighter lateral stripes, one at each side, originating at the posterior margin and ending at the ventral margin of each eye. Additionally, there is one stripe, originating at the posterior base of each lateral stripe, which is bifurcated forming one stripe that reaches the inner margin of the eye and another faint stripe extending to the anterior ventral surface but disappearing, not reaching the face. Surface close to the posterior margin of each antennal socket bearing a mark almost completely black. Eyes dark brownish with a whitish oval area at the posterior inner surface. Central ocellus oval, bigger than the others ocelli, the latter being almost indiscernible. Thorax of male with the pronotum almost square when seen from above ( Fig. 6 C), the female pronotum being comparatively more rounded. Pronotum mostly dark yellowish, with dark brownish areas; either lateral portions dark brownish; anterior and lateral margins with robust bristles; conspicuous triangular marks on each side of the longitudinal midline, near the very middle of the disc, the outermost marks being dark brownish and the innermost marks being yellowish; posterior portion with an indistinct dark yellowish oval mark on each side of the midline, both marks being parallel to the posterior margin, and a dark yellowish mark with a half oval shape at the midline; posterior portion with a dark yellowish border along the margin. Tegmina translucent, brownish; right tegmen ( Fig. 6 D) with the mirror bearing seven curved veins, the last vein of the anterior margin being divided into three; harp with six veins. Hindwings ( Fig. 6 E) translucently brown. Pro- and mesosternum dark yellowish, metasternum dark brownish. Fore- and midlegs ( Fig. 6 F) with the same coloration pattern, as follows: each coxa and trochanter dark brownish; dorsal area of each femur light brownish with a dark brownish mark near the apex; tibia with two inconspicuous dark areas, one at the tip and the other at the middle. Hindleg with femur ( Fig. 6 G) bearing four distinctive brownish areas, each one between yellowish stripes; hindtibia dark yellowish, with a dark brownish area at the dorsal tip. First and second tarsomeres of fore- and midlegs darker than the third, all darker than the tarsomeres of the hindleg. Tarsus claws of all legs whitish, with black tips. Abdomen with tergites dark brownish; ninth and tenth tergites with low-relief areas (possibly glandular) in either side ( Fig. 6 J), these areas being close to the posterior margin in the former and close to the anterior margin in the latter. Sternites dark brownish, lighter in female than in male. Cerci dark yellowish. Posterior margin of the supra-anal plate broadly rounded ( Fig. 6 H), mostly light brownish, bearing irregular dark brownish spots. Male subgenital plate ( Fig. 6 I) with two small apical lobes and a small central apical emargination; in female ( Fig. 6 K) with a deep rounded central emargination, near one third the length of the subgenital plate at midline. Ovipositor ( Fig. 6 L) near 0.85X the body length, with two small ventral lobes close to the apex. Male genitalia ( Fig. 7 ) with the dorsal tip on the midline of the pseudepiphallic arm bearing a small rounded lobe visible in lateral view ( Fig. 7 B); lateral lobes of the pseudepiphallic arm curved ventrad-outwards ( Fig. 7 A and 7C), seen as ventrad projections in lateral view ( Fig. 7 B); each lateral lobe of the pseudepiphallic bridge with two projections, both well developed (compared with R. micra sp. nov.) and almost with the same size, visible in dorsal view ( Fig. 7 A); ectophallic apodemes directed outwards ( Fig. 7 A); rami not reduced, each ramus bearing two undulations. Female genitalia ( Fig. 7 D) narrowing from the dorsal to the ventral surface; spermatheca conspicuous, arranged on the left side of the genitalia, with two lateral ducts growing from the genital chamber.

Variation. Measurements of males (n=2, including the holotype): TL 19.52–20.45; HF 14.52–15.11; HT 11.69–11.82; sHT, inner margin 24–25, outer 23–25; sHts, inner margin 3–8, outer 8–9; PL 3.11–3.20; PW 3.88–4.21; EyeW 1.70–1.73; TegL 14.81 (measured only in the holotype; paratype with incomplete tegmina); TegW 6.21–6.57; SL 3.68–4.01; NT 153–184. Females: besides the female allotype, no other female specimen was available. Right tegmen of the male paratype similar to that of the holotype, with six veins in the harp and eight in the mirror, without ramification.

Type series. Holotype male labelled / Brazil, Manaus, Tarumã Mirim River. 08-03-1976. Joachim Adis [handwritten in white paper] / 48A TM BE 8.3.76 [handwritten on white paper] / Rumea manauensis Chamorro-Rengifo & Lopes-Andrade [handwritten on red paper]/. Allotype female, same locality data as the holotype but collected in /47B TM BE 17.2.1976 [written on white paper]/ and additionally labelled / Rumea manauensis Chamorro-Rengifo & Lopes-Andrade [handwritten on blue paper]/. Paratype male, same locality data as the holotype but collected in /48D TM BE 06-01-1977 [handwritten on blue paper]/ and additionally labelled / Rumea manauensis Chamorro-Rengifo & Lopes-Andrade [handwritten on blue paper]/.

Figures

FIGURE 5. Rumea manauensis sp. nov., male holotype. A. Dorsal view. B. Lateral view. C. Ventral view.

FIGURE 6. Rumea manauensis sp. nov., male holotype (A – I) and female allotype (J – L), unless otherwise specified. A. Frontal view of the face. B. Dorsal view of the head. C. Dorsal view of the pronotum. D. Ventro-lateral view of the foreleg. E. Lateral view of the hindfemur. F. Ventral view of the right forewing of a paratype. G. Dorsal view of the right tegmen. H. Dorsal view of the supra-anal plate. I. Ventral view of the subgenital plate. J. Dorsal view of part of the abdomen. K. Ventral view of the subgenital. L. Lateral view of the ovipositor apex.

FIGURE 7. Rumea manauensis sp. nov., genitalia of the male holotype (A – C) and the female allotype (D). A. Dorsal view. B. Lateral view. C. Ventral view. D. Ventral view. Abbreviations: lateral lobe of the pseudepiphallic arm (Lat. l. ps. arm), ectophallic fold (Ect. f.), endophallic sclerite (End. scl.), lateral lobe (Lat. l.); ramus (r), ectophallic apodemes (Ect. ap.), genital chamber (G. C.), spermatheca (Spt.).