Adelosgryllus similis Zefa & Corrêa

Corrêa, Robson Crepes, Pereira, Marcelo Ribeiro, Costa, Maria Kátia Matiotti Da, Szinwelski, Neucir, Martins, Luciano De Pinho &, 2018, Two new species of crickets Adelosgryllus Mesa & Zefa, 2004 (Orthoptera, Grylloidea, Phalangopsidae) from the Araripe-Apodi National Forest, State of Ceará, Brazil, Zootaxa 4420 (1), pp. 97-112: 98-103

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Adelosgryllus similis Zefa & Corrêa

n. sp.

Adelosgryllus similis Zefa & Corrêa  n. sp.

( Figs 1 View Figure , 2–36View FIGURES 2–9View FIGURES 10–19View FIGURES 20–25View FIGURE 26View FIGURES 27–36) Orthoptera

Type material. Holotype ♂: BRAZIL, CE[ará], Crato, FLONA do Araripe-Apodi, 7°14'44.42"S, 39°29'47.64"W, 15.i.2013. Code: 01-AMC-PP. Pereira, M.R & Zefa, E. leg. ( MZUSPAbout MZUSP)GoogleMaps  . Holotype condition: genitalia placed in microvial with glycerin, legs I and right tegmen detached, and broken antennae; all parts were maintained in holotype's tube. Paratypes (1♂, 1♀, MZUSPAbout MZUSP), same data of HolotypeGoogleMaps  : ♂ code: Z6SD00-GRYLLO/ARA/ZEFA; ♀ code: 2NJ30- GRYLLO/ARA/ZEFA.

Etymology. The specific epithet refers to the morphological similarity with the species Adelosgryllus rubricephalus  ; from the Latin similis  =similar.

Diagnosis. Combination of the following characteristics: general morphology of the pseudepiphallic paramere 1 ( Figs 20–25 View Figure ); pseudepiphallic sclerite claviform, apex acuminate ( Fig. 20, 22 View Figure ); pseudepiphallic arms converging anteriorly ( Figs 20, 21, 23 View Figure ).

Description. Holotype ♂ (Code 01-AMC-PP, Figs 2–9 View Figure ). Black body with reddish head (yellowish head in alcohol fixation). Head ( Figs 5–7 View Figure ): black eyes with depigmented ommatidia next to the scape; vestigial ocelli; frons between scapes with a dark spot; occiput slightly pubescent with a dark spot behind the eyes; clypeus, labrum and mandibles slightly lighter than the other portions of the head; mandibles dark outlined; antenna ( Fig. 18 View Figure ): dilated scape with bristles at the apex, and slightly marked with a light spot on the dorsal and ventral portions; pedicel twice as long as first antennomere, with a slightly median constriction; flagellum black with a central white band; maxillary palp elongate with five dark joints, first and second small and subequal in length, third and fourth subequal in length, and fifth claviform, with ventral portion outlined in white; labial palp three-jointed, lighter than maxillary palp, gradual increase in size toward the apex, third claviform, lighter at the apex. Thorax: pronotum uniformly black, slightly pubescent, dorsal disc wider than long, bearing some long bristles, as well as bristles on the anterior and posterior margins, lateral lobe without bristles on the ventral margin ( Figs 6, 7 View Figure ). Right tegmen ( Fig. 26 View Figure ): lateral field with one diagonal vein (DV) extending parallel to subcostal (Sc) reaching one-sixth of the length of the lateral field; dorsal field with basal, cordal, harp and mirror areas well developed, apical field absent; medial (M), radial (R) and subcostal veins present, with medial vein bordering the lateral and dorsal fields; basal area with veins anal 1 (1A), anal 2 (2A) and anal 3 (3A) weakly marked; cordal area with 1A, 2A and cubital 2 (Cu2) veins; Cu2* modified in stridulatory file, bordering harp and basal area, with 92 teeth; harp with one medium-longitudinal vein (L), and two cross-veins (Hcv), one of them bifurcated; mirror oval, with one cross-vein (Mcv); a poor marked vein inside the larger cell of mirror; median fan (Mf) reduced. Measurements (mm/mm2): dorsal field length, 3.79mm; dorsal field width, 2.15mm; harp area, 2mm 2; mirror area, 1.04mm 2; lateral field length, 3.39mm; lateral field width, 0.92mm; stridulatory file length, 1.36mm and 92 teeth ( Figs 2, 4 View Figure ); mesothorax wings absent. Legs I ( Figs 10, 13 View Figure ): coxa and trochanter whitish, slightly pubescent, with some black bristles; femur basodorsal portion whitish, becoming darker to the apex; tibia uniformly dark, ellipsoid auditory tympanum present in the inner face with a long and thin bristle beside ( Fig. 16 View Figure , arrow), two subequal apical spurs; three tarsomeres same color as tibia, first 1/3 longer than second and third together, and second 1/5 longer minor than third. Legs II ( Figs 11, 14 View Figure ) slightly darker than leg I, with apical spurs longer than leg I, tarsus same as leg I. Legs III ( Figs 11, 14 View Figure ): coxa and trochanter whitish; femur III, anterior portion whitish in inner and outer dark in dorsal portion of external face; tibia uniformly dark, not serrulated; tibia with three inner and three outer subapical spurs ( Fig. 17 View Figure , S.S), four inner ( Fig. 17 View Figure , d, e, f, g) and three outer ( Fig. 17 View Figure , a, b, c) apical spurs; tarsus same as legs I and II, but tarsomere I with two apical spurs. Abdomen ( Fig. 2-4 View Figure ): tergites dark, sternites lighter than tergites, with slightly anteroposterior darkening, sternite beside to subgenital plate darker ( Figs 2–4, 9 View Figure ); cerci slender, reddish brown, with subapical region slightly darkened and whitish apex ( Figs 2–4 View Figure , 19 View Figure ); supranal plate trapezoidal with posterior margin slightly acuminate ( Fig. 8 View Figure ); subgenital plate with rounded apex and notched in the median portion ( Fig. 9 View Figure ). Phallic sclerites ( Figs 20–25 View Figure ): rami at lateral view slightly curved, dilated posteriorly and acuminate anteriorly ( Fig. 22 View Figure , R), connected to pseudepiphallus by membranes; pseudepiphallic arms converging anteriorly, curved inwards to form a weakly sclerotized arch ( Figs 20, 22 View Figure , Ps.M. Pr); pseudepiphallic posterior arms claviform, apex acuminate with bristles ( Fig. 20 View Figure , Ps.A); ectophallic sclerite H-shaped ( Fig. 21 View Figure ), with apex of the ectophallic apodeme (Ec.Ap) slightly acuminate and weakly sclerotized, apex of the posterior projections dilated and connected to the pseudepiphallic paramere 1 ( Figs 20–25 View Figure , PsP1); pseudepiphallic paramere 1 well developed and connected to pseudepiphallic paramere 2 (PsP2) small and less sclerotized than PsP1, both forming a lenticular structure ( Figs 22–25 View Figure ); ectophallic arch dilated, as long as wide ( Fig. 21 View Figure , Ec.Ar); endophallic sclerite, forming a medio-dorsal crest ( Fig. 21 View Figure , End.Sc), connected to the U-shaped ectophallic fold ( Fig. 21 View Figure , Ec.F). Measurements (mm/mm2): body length, 7.46; pronotum length, 1.21; pronotum width, 1.5; head width, 1.41; interocular distance, 0.8; femur III length, 4; tibia III length, 3.66; auditorium tympanum area, 0.01; supranal plate length, 1.01; supranal plate width, 1.12; subgenital plate length, 0.66; subgenital plate width, 1.16.

Remarks on paratypes. Male paratype. A pair of dark spots at vertex; right tegmen lateral field with six poorly marked accessory veins, cordal area without vein 1A, harp with four well marked cross-veins, mirror without the vein inside the larger cell. Measurements (mm/mm2): dorsal field length, 3.75; dorsal field width, 2.08; harp area, 1.99; mirror area, 1.15; lateral field length, 3.27; lateral field width, 0.8; stridulatory file, 1.36 and 96 teeth; body length, 5.87; pronotum length, 1.13; pronotum width, 1.51; head width, 1.38; interocular distance, 0.74; femur III length, 4.06; tibia III length, 3.53; auditory tympanum area, 0.01; supranal plate length, 0.67; supranal plate width, 1.03; subgenital plate length, 0.8; subgenital plate width, 1.02.

Female paratype ( Figs 27–36 View Figure ). Body shape and color pattern similar to holotype, slightly bigger in length; the subgenital plate was broken, making it impossible to describe its morphology; supranal plate triangular, apex oval ( Fig. 30 View Figure ); ovipositor as long as tibia III, apex acuminate ( Figs 31, 32 View Figure ). Copulatory papilla ( Figs 33–36 View Figure ): pine shaped, base sclerotized, apex translucent with a ventral indentation, followed by a longitudinal ventral groove. Measurements (mm/mm2): body length, 6.8; pronotum length, 1.15; pronotum width, 1.69; head width, 1.47; interocular distance, 0.89; femur III length, 4.58; tibia III length, 3.76; auditory tympanum area, 0.01; tegmen length, 1.32, tegmen width, 0.54; supranal plate length, 0.68; supranal plate width, 1.12; subgenital plate length, 0.62; subgenital plate width, 1.06; ovipositor length, 3.98; copulatory papilla length, 0.36; copulatory papilla width, 0.2.


Museu de Zoologia da Universidade de Sao Paulo