Dziriblatta (Dziriblatta) brevisacculata, Bohn, 2021

Bohn, Horst, 2021, Revision of the genus Dziriblatta Chopard, 1936 (Blattodea, Ectobiidae, Ectobiinae) III. The species of the subgenus Dziriblatta, Zootaxa 4964 (2), pp. 201-250 : 204

2. Dziriblatta (Dziriblatta) brevisacculata , spec. nov.

Figs. 2E, I , 3D–G , 4A–J , 5A–C, 27, 28, 29

Etymology. The species name refers to the short (Latin: brevis) pouch (Latin: saccus) lobes of the T7 gland of males, when compared to Dz. (Dz.) bolivari .

Material studied. Type material. SPAIN. Holotype, ♂, Prov. Málaga , Sierra Bermeja , btw. Mt. Reales & Pto. de Peñas Blancas, 1400 m, 4.V.1990, leg. B. & H.Bohn (completely on two slides: Sp 193a/2). ( MNMS).

Additional material. SPAIN. 3♂, 2♀, 1O, Prov. Málaga , Serranía de Ronda , Cortijo de Montero (10 km SSW Ronda), 1000 m, 5.IV.1990, leg. B. & H.Bohn (slides: 3♂, Sp 186a/5,8,9); Prov. Málaga , Sierra Bermeja , btw. Estepona & Pto. de Peñas Blancas, 600 m : 3♂, 17♀, 1. V.1997 leg. B. & H.Bohn (slides: 3♂, Sp 192a/1-3) / 1♀, 23.III.2000, leg. T. Knebelsberger (Sp 192b); same locality and collectors as holotype : 2♀, 7. VI.1989 (Sp 193) / 3♂, ex L: 1♀, 4. V.1990 (slides: 2♂, Sp 193a/3,4) / 6♂, 10♀, 1L, 1. V.1997 (slides: 3♂, Sp 193b/1-3) ; 9♂, 13♀, 2O, Prov. Málaga , 4.5 km E Villanueva de Cauche (30 km N Málaga), 900 m, 30.IV.1997, leg. B. & H.Bohn (slides: 6♂, Sp 457/1–6) ; 14♂, 24♀, 1L, Prov. Málaga , btw. Ganeín & Algotocín (31 km SW Ronda), 750 m, 1. V.1997, leg. B. & H.Bohn (slides: 4♂, Sp 458/1–4) ; 1♂, Prov. Malaga , Serranía de Ronda, btw. Benadalid & Atajate (ca. 20 km SW Ronda), 750 m, 23.III.2000, leg. T. Knebelsberger (slide: ♂, Sp 488/1). (Coll. Bohn, ZSM) .

Description. Size. Length of pronotum in holotype 2.18 mm, relative length of pouch lobes of T7 gland 58– 75% (mean 69.8%) (N22, Table 2 ).

Male structures. T7 gland similar to the preceding species, but pouch lobes much shorter; shape of pouch lobes very variable, mostly obtusely conical, with broadly rounded tip ( Figs. 3E, F , 4D , 5A–C), rarely with a more narrowly rounded tip ( Fig. 3D ); long pit bristles not as strictly straight as in Dz. (Dz.) bolivari , at least tips slightly curved, and their bundles less dense, short pit bristles often rather strongly curled ( Figs. 4F–H ); lateral pit holes usually more deeply hollowed out, shape very variable, circular or more elongated, in the latter case often curved towards posteriorly ( Figs. 5A–C ). Glandular pores laterally on T2: present, but of variable number, mostly well developed ( Fig. 2I ) as in the preceding species, but partly as sparce as in the following two species ( Figs. 2H, J ).

Distribution. Spain, Andalusia, western part of the Cordillera Penibetica. One locality north of Malaga, other localities further west in the mountain ranges Serranía de Ronda and Sierra Bermeja, at elevations of 600–1400 m ( Figs. 27 , 28 ).

Remarks. Three of the 23 male specimens studied had pouch lobes with less broadly rounded tips, thus resembling Dz. (Dz.) bolivari in this respect and raising the question about how well the two species can be separated. However, all three specimens have very short pouch lobes (Sp 193a/4, Fig. 3D : 69%, Sp 457/1: 67%, Sp 457/6: 58%) with length values below the mean value (69.8%) of the specimens studied, confirming their affiliation to the new species. The use of the lobe length as a decisive criterion for the distinction of the two species appears justified since their ranges in this parameter, though rather near together, do not overlap. The rather strong differences in the colouration of the males also supports this assumption (see below).

There remains the need to treat one obviously aberrant specimen of the species (Sp 193a/1, Fig. 5A ). It has an extremely long right pouch lobe (100%) with broadly rounded tip, its left lobe is slightly shorter and shows a kind of asymmetrical branching. The branching is interpreted to be the result of a severe developmental disturbance, which could also have influenced the development of the right lobe. The excessive length of the right lobe is, therefore, considered as an artifact and not included in the calculations concerning the length of the pouch lobes.

Figures

FIGURE 2. A–C. Tergites of a rather darkly coloured specimen of Dz. (Dz.) bolivari. A: T2–4; B: T5; C: T6.—D–F. T6 of lightly coloured specimens from D: Dz. (Dz.) curvisetosa; E: Dz. (Dz.) brevisacculata; F: Dz. (Dz.) bolivari.—G–J. Lateral pre-ridge area pa of T2 with glandular pores (arrows), tr transversal ridge. G: Dz. (Dz.) bolivari; H: Dz. (Dz.) curvisetosa; I: Dz. (Dz.) brevisacculata; J: Dz. (Dz.) pilleata.—Enlargements: Same scale in A–C and in G–J.—Identifications: A–C (Ma 188/1), D (Sp 219/5), E (Sp 193a/4), F (Ma 5a/4), G (Ma 222/1), H (Sp 219/6), I (holotype, Sp 193a/2), J (holotype, Sp 187/13).

FIGURE 3. A–C. Male structures of Dziriblatta (Dz.) bolivari. A, B: dorsal view into the interior of the central pit extending between the dorsal edge of the pouch opening po and the posterior wall of the pit pw. In A bases of bristles (light circles) focused to show how the layer of bristles on the ventral wall of the pouch p is continued outside the lobes in two ribbons on the membraneous part of the pit bottom m; tl trail, slerotized part of the pit bottom; in B bristles in full length focused, notice the curving of the shorter mesal bristles sbr and the straight appearance of the long bristles lbr originating in the pouch lobes, and their common ending near the sagittal ridge r. C: male T7 with pouch lobes; abbreviations not yet mentioned: gu gutter; h lateral hole.—D–F. Male of Dz. (Dz.) brevisacculata, T7 with pouch lobes, in D one of the three specimens with relatively narrowly rounded lobe tips.—G–I. Male terminalia showing the posterior border pt of T10 of the species Dz. (Dz.) brevisacculata (G), curvisetosa (H), and pilleata (I).—Enlargements: Same scale for A,B, for D–F, and for G–I.—Identifications:A (Sp 123/1), B,C (Sp 209/1,5), D,E (Sp 193a/4,3), F (Sp 457/2), G (holotype, Sp 193a/2), H (Sp 214/4), I (holotype, Sp 187/13).

FIGURE 4. A–J. Male structures of Dziriblatta (Dz.) brevisacculata. A: T2–4; B: T5; C: T6; D: T7; E: T7, central region in more detail; F–H: dorsal view into the interior of the central pit; I, J: thoracic nota with tegmina.—Abbreviations: gu gutter; h lateral hole; lbr, sbr long, short bristles; n notch; p pouch; po dorsal edge of pouch opening; pa pre-ridge area; pw posterior wall of pit; r sagittal ridge; tl trail; tr transversal ridge.—Enlargements: Same enlargements for A–C, for F–H, and for I,J.—Identifications:A–F,I (holotype, Sp 193a/2), G (Sp 192a/3), H (Sp 457/6), J (Sp 186a/5).

FIGURE 5. A–F. Male T7 of species of the bolivari-species group. A–C: Dziriblatta (Dz.) brevisacculata, in A specimen with exceptional shape and length of the pouch lobes; D–F: Dz. (Dz.) curvisetosa.—Abbreviations: br bristles; gu gutter; h lateral hole; p pouch lobe; r sagittal ridge; tl trail.—Identifications: A (Sp 193a/1), B,C (Sp 458/2,3), D,E (Sp 214/5,7), F (Sp 219/2).

FIGURE 27. Distribution of the species of subgenus Dziriblatta in Morocco and southern Spain (for mountains and locality numbers see Fig. 28). The lobososacculata-species group is distributed along the main mountain ranges of the Middle and High Atlas and the Rif, the bolivari-species group mainly further North: along the western Tell Atlas in Algeria (see fig. 32 in Bohn 2019), in northern Morocco including the northern part of the Middle Atlas, and in southern Spain along the Cordillera Penibetica, West of the Sierra Nevada up to Algeciras. The names of the species and their symbols are listed in the sequence of their distribution, which in the bolivari-species group is from East to West, in the lobososacculata-species group from North to South.The numbered arrows indicate localities with the common occurrence of two different species of subgenus Dziriblatta. In most cases Dz. (Dz.) algerica is found associated with another species, at locality 1 with Dz. (Dz.) bolivari, at 2 with Dz. (Dz.) ramososacculata, and at 4 with Dz. (Dz.) lobososacculata; at locality 3 Dz. (Dz.) ramososacculata is occurring together with Dz. (Dz.) planotuberculata.—Abbreviation: indet. females = indetermined females, only in Spain.

FIGURE 28. Locality numbers of all species of subgenus Dziriblatta found in Morocco (Ma) and Spain (Sp.).