Bioacoustics of Typhlocharis martini

Description : Length of holotype : 1.7 mm . Length of paratypes : 1.6–1.8 mm . Body long, depressed and parallel, light brownish. Integument microreticulate, mesh pattern isodiametric, with scattered short setae. Head capsule ( Fig. 2 a) robust, slightly narrower than pronotum and almost as wide ( 0.34 mm .) as long ( 0.36 mm .), slightly depressed in the middle of the frons, with two frontal divergent depressions delimiting it. Dorsal surface reticulate except stridulatory area without microlines. Clypeus without median tooth. Anophthalmous. Appendages: antennomeres 1–3 apically dilated, 4–11 moniliform ( Figs. 2 b and 2c); Labial mentum with one tooth and lateral lobes rounded ( Fig. 2 d); penultimate labial palpomere thickened, ultimate palpomere minute. Setation: clypeus with two setae (C 1–2), the external pair longer than the internal. Cephalic capsule with three frontal setae (F 1–3), two median (M 1–2), and five large periorbital setae (supraorbital plus temporal), lateral carina with minor setae. Labrum with five setae (L 1–5), three short and medial, one long and lateral and one external to the latter; labial mentum with two pairs of long setae, one close to the base of tooth and another on the lateral lobes, and prebasally with two lateral pairs of setae. Prothorax. Pronotum ( Fig. 2 e) longer ( 0.48 mm .) than wide ( 0.42 mm .) and surface microreticulate ( Fig. 2 e). Disc flattened. Anterior margin slightly arcuate. Sides from middle to posterior angles slightly crenulate and narrowed. Hind angle distinctly marked with a small acute tooth ( Fig. 2 g). Posterior margin bisinuate. One seta in anterior quarter of lateral margin and another on hind angle. Sparse minute setae evenly dispersed onto the disk. Four or five pairs of strong setae on the anterior margin and two pairs of setae on the posterior margin. Both anterior and posterior margins with a row of tomentose setae. Prosternum with sparse and short setae ( Fig. 2 f). Elytra ( Fig. 3 b–d) twice longer ( 0.88 mm .) than wide ( 0.42 mm .), totally reticulate, with longitudinal carina at seventh stria short, not extended to the apical margin of elytron (it disappears in the posterior fifth), and thus not forming there a small dentiform projection. Basal and lateral margins perpendicular, humeral region clearly marked and humeral angle smoothly rounded. Sides parallel with lateral margins slightly serrate to posterior quarter. Sutural angle dentate and divergent ( Fig. 3 d). There are five longitudinal series of setae. Lateral margin with four setae in the anterior umbilicate group and three setae in the posterior group ( Fig. 3 c). First ventrite of female without lateral fovea ( Fig. 3 a). Legs similar in both sexes without special features such as dentiform projections or distally dilated femora ( Fig. 2 f, 3a). Front tibia with antenna cleaner (toilette organ) long and regularly arcuate, with one securiform clip seta at its proximal border ( Fig. 2 h), also reported in other species (e.g., T. gonzaloi : Ortuño, 2005 ). Trochanter long with rounded apex ( Fig. 3 a), similar in male and female. Female genitalia ( Fig. 4 a) according to the model of Vigna Taglianti (1972) , with long tubular gonocoxites showing two apical nematiform setae. Spermatheca ovoid, sclerotized, spermathecal gland distally dilated. Male genitalia ( Fig. 4 b) with the median lobe slightly curved and the ventral side almost straight, apex short, acute and curved. Internal sac with a small sclerotized piece. Parameres with two apical setae. Habitat : The type locality of Typhlocharis martini n. sp. , Fuente del Prado, is a spring on a hillside facing south near Mundo River. There were uncultivated terraces with abundant Brachypodium phoenicoides and Imperata cilíndrica . Samples were collected in the soil B horizon, in between some roots. The El Cenajo place was a slope close to a hot spring on a hillside facing south, 50 meters from the Segura River bank. Vegetation was made up of Pinus halepensis , Phragmites australis , Imperata cylindrica and Dittrichia viscosa . Fuente de la Parra is a spring close to a usually dry stream bed (a typical “rambla”), with a vegetation similar to that of El Cenajo. These localities are located in the Upper Segura River Basin ( Fig. 5 ). Other endogean beetles were also collected with T. martini ( Staphylinidae , Scydmaenidae and Endomychidae ) and are under study for species identification.