Caenomastax magdalenensis, Cadena-Castañeda, Oscar J., Garay, Andrea, Castañeda, Didier, Cardona-Granda, Juan Manuel & García, Alexander García, 2016

Cadena-Castañeda, Oscar J., Garay, Andrea, Castañeda, Didier, Cardona-Granda, Juan Manuel & García, Alexander García, 2016, Systematics and phylogeny of the genus Caenomastax Hebard, 1923 (Orthoptera: Eumastacidae: Eumastacinae), Zootaxa 4117 (2), pp. 241-264 : 256-257

Caenomastax magdalenensis n. sp.

( Figs. 62–64 , 74–76 , 83–84 , 94–96 , 111–112 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:472559

Diagnosis. Pronotal prolongation absent, both sexes brachypterous. Tegmina and pronotal disc blue ( Fig. 62 ), general color of thorax and abdomen yellow and blue. Phallic complex: lateral lobes of the epiphallic plate shoulder blade-shaped, anterior margin of epiphallic plate slightly emarginated, length of medial epiphallic disc region wavy ( Fig. 74 ), lateral lobe of epiphallus with posterior and anterior margin similar-sized ( Fig. 76 ).

Holotype. ♂ Colombia, Santander, Gualilo, Vereda Betania, Rio Quirata 400 m, 12 January 2011, A. Ardila [ CAUD].

Paratypes. ♂2♀ same data as holotype.

Description. Male. Color in vivo: Cephalic capsule light blue, pronotal disc and dorsal margin of body blue, sides yellowish green tegmina with costal to subcostal margin yellowish green, the rest of the tegmina blue. Head. Antennae with black segments, scape and pedicel whitish blue. Thorax. Pronotum. Posterior margin of pronotum truncate, dorsal midline remarkable and going from the middle of the anterior margin to the posterior margin of the pronotal disc. Lateral lobes of pronotum rectangular-shaped and with similar width in the anterior and posterior margins ( Fig. 62 ). Tegmina. Ovoid, covering the second abdominal tergite ( Fig. 62 ). Legs. Hind femora devoid of basal spine, hind tibiae armed in the dorsal margin with 23 external spines of similar size; internal margin with 17 spines, getting bigger from the first through the 7th, and from then a series of alternating short and long spines continue. Abdomen. Mid line of tergites projected backwards to the 9th tergite. Subgenital plate in axial view with concave tip; triangular epiproct with a slightly pointy tip; cylindrical cerci, longer than the epiproct and non-curved ( Figs. 63–64 ). Phallic complex. Epiphallus in dorsal view with slight U-shaped frontal emargination; lateral lobes of the epiphallic disc shoulder blade-shaped. Hook-shaped lophi, slender and pointy-ended, curving inwards and backwards; endophallic rods sub-membranous and wide, U-shaped, elongated and connecting with the ectophallic valves. Dorsal disc only a little sclerotized, moderately wide and not very elongated, going from the base of epiphallus to just before the dorsal fold. Ectophallic valves triangular, tapering towards the end and with nonpointy tip ( Figs. 74–76 ).

Female: Similar to the male in color, but for the following: spots of the prozone of the pronotal disc more remarkable, square-shaped, wider tan long, but not as prominent as the ones in C. bimaculata ( Fig. 112 ); metazona of pronotal disc not pronounced ( Figs. 83–84 ). Tegmina cover up to the second abdominal segment; tegmina sub ovoid with a lobe in the anal margin and a less prominent one in the costal tip ( Fig. 94 ). Triangular epiproct, with subacute tip, conical cerci shorter than the length of the epiproct. Ovipositor valves slenderer than in the other three species, valves serrated in the dorsal margin of upper valves and in the ventral side of the lower ones; last denticule of the valves curved backwards. Subgenital plate with a mid-distal, slight W-shaped incision, with a membrane protruding between the ventral valves and the subgenital plate ( Figs. 95–96 ).

Etymology. Alludes to the species being native of the middle Magdalena river valley.

Measurements (mm). (♂/♀). Lt: 15/16; P: 3/2.2; Teg: 3.3/3.2; HF: 8.2 /9; HT: 9.2/10.

Figures

FIGURES 53 – 64. Males of the species of genus Caenomastax (Head and thorax in dorsal view, terminalia in dorsal and side view respectively). 53 – 55. C. insignis. 56 – 58. C. similis n. sp. 59 – 61. C. bimaculata n. sp. 62 – 64. C. magdalenensis n. sp.

FIGURES 65 – 76. Phallic complex of the species of Caenomastax. 65 – 67. C. insignis. 68 – 70. C. similis n. sp. 71 – 73. C. bimaculata n. sp. 74 – 76. C. magdalenensis n. sp.

FIGURES 77 – 84. Head, pronotum and tegmina of Caenomastax females in side and dorsal view, respectively. 77 – 78. C. insignis. 79 – 80. C. similis n. sp. 81 – 82. C. bimaculata n. sp. 83 – 84. C. magdalenensis n. sp.

FIGURES 85 – 96. Tegmina, ovipositor and subgenital plate of the females in genus Caenomastax. 85 – 87. C. insignis 88 – 90. C. similes n. sp. 91 – 93. C. immaculate n. sp. 94 – 96. C. magdalenensis n. sp.

FIGURES 111 – 116. Living monkey grasshoppers. 111 – 112. Caenomastax magdalenensis n. sp. (male and female). 113 – 114. Hebardomastax atopa n. comb. (male and female). 115 – 116. Zeromastax selenesii (male and female).