A new species of Arachnopsita (Orthoptera: Grylloidea: Phalangopsidae) from caves in Guatemala Author Junta, Vitor Gabriel Pereira Author Castro-Souza, Rodrigo Antônio 0000-0002-3439-9991 rodrigodesouzaac@gmail.com Author Ferreira, Rodrigo Lopes text Zootaxa 2022 2022-02-04 5094 3 409 434 journal article 20807 10.11646/zootaxa.5094.3.3 0e7ebd39-0722-47a5-babf-320300157c16 1175-5326 5974200 50F1BC50-CEAA-491A-8E72-15F3E545BC49 Arachnopsita cavicola ( Saussure, 1897 ) ( Figures 24–29 , 30–36 , 37–40 , 41–45 , Table 2 ) Material examined. Topotype 3 ♂♂ ( ISLA 12431; 12432; 12433) and 1 ♀♀ (ISLA 12430), Guatemala , Alta Verapaz, municipality of Lanquin , Cueva de Lanquín ( 15°34’49.5” N ; 89°59’26.1” W ), 26.vi.2017 , Pacheco, G. S. M. , leg. near of type locality, 7 ♂♂ ( ISLA 12420; 12421; 12423; 12424; 12425; 12426; 12429) and 3 ♀♀ (ISLA 12422; 12427; 12428), Guatemala , Alta Verapaz , municipality of Lanquin , Cueva Chipix ( 15°33’34.6” N ; 89°59’43.1” W ), 22.vi.2017 , Pacheco, G. S. M. , leg .. Additional description, male topotype ♂ ( ISLA 12432). Body color : dorsal head, pronotum and abdomen uniformly dark yellowish brown and whitish ventrally, darker than in A. maya n. sp. ( Figs 32 and 33 ); entire legs brownish, whitish at its proximal portion ( Figs 37–40 ), leg III with smaller whitish portion compared to A. maya n. sp. ( Figs 37 and 38 ); cerci uniformly brown ( Fig. 34 ). Head : slightly pubescent and with long bristles at the base of vertex (some which were lost probably in fixation), elongated at frontal view (3.274 and 2.905 mm , length and width respectively), fastigium extending the vertex in an inclined plane ( Figs 30 and 31 ); gena with a darkened strip connecting the compound eyes to the mandible insertion, front dark yellowish brown, clypeus and labrum greyish brown, mandibles dark yellowish brown and sclerotized at the apex; all maxillary palpomeres pubescent, whitish brown and lightly grayish than in A. maya n. sp. , first two short and same size, last three are bigger and similar size, fifth palpomere claviform, arched and whitish at the tip ( Figs 30 and 31 ), all labial palpomeres pubescent, whitish brown and lightly grayish than in A. maya n. sp. , increasing in size, third palpomere claviform ( Figs 30 and 31 ); scape whitish at the base and brown next to the pedicel, pedicel dark brown, antennomeres uniformly dark brown ( Figs 30–32 ); compound eyes black and lightly reduced compared to A. maya n. sp. , elongated, border of ommatidia lightly depigmented, ocelli absent ( Figs 30–32 ). Thorax : pronotum slightly pubescent and more brownish compared to A. maya n. sp . ; anterior, medial and posterior portion with less sclerotized regions (appearance of whitish spots) distributed along the sagittal axis in dorsal view ( Figs 32 and 33 ); dorsal disk broader than long, lateral lobes rounded, anterior and posterior margins sub-straight, anterior margin with long bristles, posterior and lateral margins with possibly lost bristles in fixation ( Fig. 32 ). Legs. In general, femur, tibia and tarsus pubescent; femur smaller than tibia in length (μ = 9.796 ± 1.476 mm ; μ = 11.164 ± 1.603 mm , femur and tibia respectively, Leg III, n = 9) ( Figs 37–40 ). Leg I ( Figs 39 and 40 ): tibia armed with two same-sized ventral apical spurs, tympanum absent; first tarsomere ventrally serrated and twice longer than second and third together. Leg II ( Figs 39 and 40 ): tibia armed with two same-sized ventral apical spurs ( Fig. 39 ; ε and Fig. 40 ; ζ); first tarsomere ventrally serrated and twice longer than the second and third together. Leg III: femur dilated; tibia serrulated, armed with four subapical spurs on outer side ( Fig. 37 ; w, x, y, z), the distal being smaller ( Fig. 37 , z), and three on inner side ( Fig. 38 ; α, β, γ), three apical spurs on outer ( Fig. 37 ; a, b, c) and four on the inner side ( Fig. 38 ; d, e, f, g), the inner being the longest; first tarsomere about twice longer than the second and third together, armed with two apical spurs ( Figs 37 and 38 ). Right Tegmen : absent ( Fig. 32 ). Abdomen : cerci long and pubescent, mainly in the base ( Fig. 34 ); sub-genital plate dark brown, wider than longer, spheroidal shape, convex distally ( pers. obs. the shape of the structure was possibly damaged by fixation to ethanol and your bristles are lost) ( Figs 34 and 35 ); supra-anal plate dark brown, quadrangular, pubescent, proximal margin V-shaped and with two lateral projections, lightly convex distally, with two distal-lateral globular projections with long bristles ( Figs 34 and 36 ). FIGURES 24–29. Arachnopsita cavicola ( Saussure, 1897 ) . Phallic sclerite ♂ (ISLA 12420). 24—ventral view; 25—dorsal view; 26—latero-frontal view; 27—frontal view; 28—lateral view. 29 —copulatory papilla ♀ (ISLA 12427). a—ventral view; b—lateral view; c—dorsal view. Abbreviations : Male genitalia. Ps. arm , pseudepiphalic arm; Ps.vp , pseudepiphallic ventral projection; Ps.ib , pseudepiphallic inner bars; Ps.ms, pseudepiphallic membranous shield; Ps.P1 , pseudepiphallic paramere 1; Ps.P2 , pseudepiphallic paramere 2; C -vp , C-sclerite ventral projection; C -lbs , laterobasal spine of C-sclerite; C -bp , C-sclerite basal plate; A , A-sclerite; Ect.Arc , ectophallic arc; Ect.lb , ectophallic lateral bar; Ect.Ap , ectophallic apodeme; End.F , Endophallic fold; End.s , sclerotized extension of endophallic fold; End.Ap , Endophallic apodeme. FIGURES 30–36. Arachnopsita cavicola ( Saussure, 1897 ) . Male morphology. 30—head in frontal view; 31—head in lateral view; 32—head and pronotum in dorsal view; 33—pronotum in lateral view; 34—supra-anal and sub-genital plates in lateral view; 35—sub-genital plate in dorsal view; 36—supra-anal plate in ventral view. Male phallic sclerites ( ISLA 12431, Figs 24–28 ). Pseudepiphallus: arm long and curved inward ( Fig. 25 , Ps.arm); ventral projection reduced and globular shaped compared to A. maya n. sp. ( Figs 24, 26–28 , Ps.vp); inner bars well sclerotized, curved inward forming a central acuminate projection ( Fig. 25 , Ps.ib); membranous shield broad and flat, more sclerotized compared to A. maya n. sp. ( Figs 26 and 27 , Ps.ms); paramere 1 well developed, cone shaped frontally and globular dorsally, with a band less sclerotized, forming a smaller portion dorsally and a larger portion ventrally ( Figs 25–27 , Ps.P1); paramere 2 reduced and undeveloped, connected with Ps.P1, flattened and projecting towards C-sclerite basal plate (C-bp) ( Figs 25–27 , Ps.P2); A sclerite well sclerotized, starting from the Ps.arm, thin and involving the paramere 1 ( Figs 25, 26 and 28 , A). C-sclerite : in general is the most sclerotized part of the sclerite; ventral projection globular ( Fig. 26 , C-vp); laterobasal spine very reduced and underdeveloped compared to A. maya n. sp. ( Figs 24 and 25, 27 and 28 , C-lbs); basal plate less broad compared to A. maya n. sp. , slightly concave medially, inclining inward and almost reaching the Ps.P2 ( Figs 25 and 26 , C-bp). Ectophallic invagination: arc developed, straight at the upper and curved in central part ( Fig. 24 , Ect.Arc); lateral bars elongated and projected inwards ( Fig. 24 , Ect.lb); apodemes developed, flatted, dilated and projected outwards of the sclerite, at dorsal and ventral view, with its distal portion rounded and degree of opening is bigger compared to Arachnopsita maya n. sp. ( Figs 25 and 28 , Ect.ap); Endophallus: endophallic fold small, forming V-shaped and narrower compared to Arachnopsita maya n. sp. ( Figs 24, 27 and 28 , End.F); sclerotized extension of endophallic fold reduced and horizontally projected ( Figs 24 and 28 , End.s); apodemes curved dorsally and close to each other, apex dilated and less sclerotized ( Figs 25 and 28 , End.Ap). Female ( ISLA 12422): same appearance in relation to males, body size slightly bigger than male ( ♀ µ = 18.097 ± 1.291 mm , n = 4); apterous; femur always smaller than tibia; sub-genital plate brown and pubescent, short, Vshaped, distal margin lightly forked compared to A. maya n. sp. ( Fig. 41 ); supra-anal plate whitish with dark spots and pubescent, distal margin rounded with long bristles, proximal with two small projections ( Fig. 42 ); ovipositor dark yellowish brown, elongated, sword shaped, with a constriction near the apex, pointed apex ( Figs 43–45 ). Female genitalia ( ISLA 12430, Fig. 29 ). Copulatory papilla elongated, flat ventrally, lateral margins slightly bulging ventrally and dorsally, slightly narrow towards at apex ( Fig. 29 , a and b); with the presence of a slightly convex bulge towards at base compared to A. maya n. sp. , evident laterally ( Fig. 29 , c).