Luridiblatta vesiculosa, Bohn, 2022

Bohn, Horst, 2022, Revision of the genus Luridiblatta (Blaberoidea, Ectobiidae, Ectobiinae), Zootaxa 5215 (1), pp. 1-72 : 13-14

4. Luridiblatta vesiculosa , sp. nov.

Figs. 6A , 16A–N , 17A–C , 18A–J , 34C , 35B , 36E,F , 37 , 43

Diagnosis. In the male sex from L. longitubulata and L. gibberosa distinguished by the extremely short glandular pouches scarcely surpassing T7 anteriorly, from L. fenestrata , which also has short T7 pouches, distinguished by the presence of pairs of vesicular structures contained in the glandular pit.

Etymology. The species name refers to the vesicles (in Latin: vesicula, -ae) present in the glandular pit of T7.

Material studied. Type material. Holotype, 1♂, MOROCCO, Rif , 15 km W Bab-Berred, 1300 m, 13.VIII.1984, leg. B. & H.Bohn (completely on two slides, Ma 5/8). (Coll. Bohn, ZSMC).

Additional material. MOROCCO. 1♂, Maroc , Larache, M.Escalera (slide: Bo 1532) (M. Brussels) .— 3♂, 3L; ex L: 2♂, 4♀, 5O, btw. Ceuta & El-Biutz , 400 m, 10.VIII.1984, leg. B. & H.Bohn (slides: ♂, Ma 1/4,6; ♀, Ma 1/7) ; 64♂, 17♀, 32L, 4O; ex L: 4♂, 12♀, 4O, Oued Laou , 5 km SW Es-Sebt-de-Saïd, 200 m, 11.VIII.1984, leg. B. & H.Bohn (slides: ♂, Ma 3/3,15–19,23; ♀, Ma 3/14,20,21; L, Ma 3/22) ; 7♂, 2L; ex L: 6♂, 8♀, 15 km W Bab-Berred, 1300 m, 13.VIII.1984, leg. B. & H.Bohn (slides: ♂, Ma 5/1,2,3,4,5,6; ♀, Ma 5/7); ex L : 2♂, 2♀, 1L, Bab-Besen (15 km W Ketama), 1600 m, 14.VIII.1984, leg. B. & H.Bohn (slides: ♂, Ma 6/4,9; ♀, Ma 6/10) ; 1♂; ex L: 4♀, 5 km S Souk-el-Had-de-Ikauen (38 km S Ketama), 800 m, 14.VIII.1984, leg. B. & H.Bohn (slide: ♂, Ma 7/1) ; 3♂, 4♀, 15 km ESE Ouazzane , 500 m, 4.IX.1984, leg. B. & H.Bohn (slides: ♂, Ma 36/2,3; ♀, 36/4) ; 1♂, 1♀, 5 km N Zoumi (E Ouazzane ), 600 m, 5.IX.1984, leg. B. & H.Bohn (slide: ♂, Ma 37/1) ; 4♂, 6♀, 3L, Pays Jebala , 10 km SE El-Hadd’Agadir-el-Krouch (25 km SW Chefchaouèn), 500 m, 5.IX.1984, leg. B. & H.Bohn (slides: ♂, Ma 38/2–5) ; 1♂, 4 km SW Derdara ( S Chefchaouèn ), 400 m, 5.IX.1984, leg. B. & H.Bohn (slide: ♂, Ma 39/1) ; 27♂, 30♀, 10 km NW Derdara ( S Chefchaouèn ), 500 m, 5.IX.1984, leg. B. & H.Bohn (slides: ♂, Ma 40/1,4–9,12; ♀, Ma 40/10,11) ; 1♂, 3♀, 1O, Jbel Tisouka (near Chefchaouèn), 1800 m, 6.IX.1984, leg. B. & H.Bohn (slide: ♂, Ma 42/1) ; 9♂, 11♀, 1O, Bge. Sedd-en-Nakhla , near Zinat (12 km S Tetouan), 450 m, 7.IX.1984, leg. B. & H.Bohn (slides: ♂, Ma 43/1,2) ; 1♂, 1♀, El-Fendek (22 km W Tetouan), 300 m, 8.IX.1984, leg. B. & H.Bohn (slide: ♂, Ma 44/1) ; 1♂, 14♀, Dar Chaoui (33 km W Tetouan), 100 m, 8.IX.1984, leg. B. & H.Bohn (slide: ♂, Ma 45/1) ; 25♂, 37♀, Pont Mohammed V (30 km SW Tanger), 50 m, 9.IX.1984, leg. B. & H.Bohn (slides: ♂, Ma 46/1,7–12,14; ♀, Ma 46/2,3,6,13); ex L : 1♂, Pays Beni Zerual , ca. 7 km N Ourtzarh, 400 m, 29.V.1997, leg. B. & H.Bohn (slide: ♂, Ma 186/1). (Coll. Bohn, ZSMC) .

Description. Size. Male. Length of pronotum 1.48–1.73 (mean 1.59) mm, length of tegmina 2,16–2.83 (mean 2.58) mm. (N = 8/11). Female. Length of pronotum 1.68–1.99 (mean 1.82) mm, length of tegmina 2.13–2.47 (mean 2.30) mm. (N = 7/9).

Wings. Apex of tegmina in the male usually straight, seldom very weakly concave, in the female usually weakly concave, seldom straight; hindwings in both sexes of variable shape, not broadening towards the apex ( Fig. 16H,I ).

Male abdomen. Tergites: Fig. 16A–G. T 6 as described under characters of the genus and the species group ( Fig. 6A ). T7. Pit size: minor, not larger than size 2. Anterior pit wall (aw) with strongly sclerotised area (sa) along the uper margin, well set off by a very dark colouration; towards below the area is limited by the widely bow-shaped edges ed ( Fig. 18D ) of a pair of relatively deep excavations of the anterior pit wall, mesally separated by the relatively short and narrow stabilising bracelet (s); occasionally, the excavation is deepening in two steps, with the formation of a second edge ( Fig. 17B ) further below. The pit contains structures looking like vesicles (vs) ( Figs. 17B , 18B,H ); more detailed analysis showed that they consist of a clew of tubular structures, presumably formed by the elongated endpieces of the pouches entering the pit via the windows (w, Fig. 17B ) of the anterior wall. Posterior pit wall (pw) with bulges (bu) of very different shape and size ( Fig. 18A–H ). Glandular pouches (gp) very short, scarcely surpasing the anterior border of the tergite ( Fig. 17B , 18B,E,G ); tubules (tu) also very short, scarcely measuring more than halfway the distance to the lateral borders of the tergite. Genital hook with relatively normally shaped shaft, below the apical process not or only weakly bulged out ( Fig. 16L–N ).

Distribution. The species is in its distribution restricted to the northwestern corner of Morocco, fairly in congruence with the Region Ranger-Tétouan. So far no other species of Luridiblatta had been found within the distribution area of L. vesiculosa .

II. The trivittata- species group

1. Group-specific characters

Male T6. Mesal part of anterior border slightly more produced than in the preceding group, transversal ridge mesally interrupted or completely missing, near the lateral borders with a pair of small deepenings ( Fig. 1B,C ; for more details see description under characters of the genus).

Wings. Male tegmina longer than in the longitubulata -group, almost reaching the abdominal end, obliquely rounded ( Fig. 19H ) or obliquely cut ( Fig. 22G ). Hindwings of both sexes broadening towards apically, apex in the middle with a variously deep excavation or a steplike excision on one side ( Figs. 19J,K , 21J ).

Male genital hook as in the preceding group with relatively normally shaped shaft, diameter at middle length equals about a fifth of the total length, but shaft below the apical process strongly bulged out; other features as described under characters of the genus ( Figs. 19L–N ).

2. Characters common to longitubulata - and trivittata-group, differing in beybienkoi -group

Figures

FIGURE 1A–D. Structures of male T6 of Luridiblatta; overview pictures to show the differences between the three species groups of the genus: A: longitubulata-, B,C: trivittata-, D: beybienkoi-group. The figure shows an exemplary selection of species of the three groups; the remaining species are similaraly depicted on Figs. 5E,F and 6A–D.—Abbreviations: ab anterior border of the tergite; ad, pd anterior, posterior deepening; arrows point to the anterior bristle stripe; mi group of lightly coloured spots indicating the insertion of dorso-ventral muscles; tr transversal ridge, not present in C,D; pr, po pre-ridge, post-ridge area of tergite.—Identifications: A (Sp 45/2, holotype), B (Sz 7/4), C (Al 36/7, holotype), D (Is 23/1).

FIGURE 6A–D. Structures of male T6. Continuation of overview pictures of male T6, species: L. vesiculosa (longitubulata- group), with fully developed transversal ridge tr; L. cyprica, L. beybienkoi and L. graeca (beybienkoi-group), without transversal ridge, but with ad, pd anterior, posterior deepening; fo membraneous fold; arrowhead indicates w-shaped dark line.—Identifications: A (Ma 5/1), B (Cy 18/1, holotype), C (Ty 3/1), D (Kr 23/2, holotype).

FIGURE 16A–N. Main structures of L. vesiculosa.—A–G. Male tergites.A: T1–4; B: T5; C: T6; D,F: T7; (D) outline: glandular pit pi; (F) more detailed: ab, pb anterior, posterior border of pit opening; aw anterior pit wall with sa strongly sclerotised area, ed edge of the excavation, and s stabilising bracelet; pw posterior pit wall with a pair of a relatively wide, but shallow posterior bulges bu; vs vesicular structures within the pit; gp glandular pouch. E,G: T8, (G) anterior part in more detail, showing the rough cuticle along the anterior border.—H,I. Left tegmen of male (H) and female (I).—J,K. Hindwing lobe l with part of metanotum mt of male (J) and female (K).—L–N. Male genital hook with shaft sh and its apical process ap; ve velum; cl claw and its triangular crest cr.—Enlargements: Same scale for A–E, and for H,I.—Identifications: A–D,F,H,J (Ma 5/8, holotype), E,G (Ma 37/1), I,K (Ma 5/7), L,M (Ma 38/5), N (Ma 38/3).

FIGURE 17A–C. Male structures of T7 in L. vesiculosa (specimen Ma 1/4). A: Complete T7; B,C: central area at higher magnification, focus stacking in B throughout the whole object, in C not deeper than to the pit opening.—Abbreviations: ab, pb anterior, posterior border of pit opening; anterior pit wall aw, with the strongly sclerotised area sa, the two edges of the excavation ed, the stabilising bracelet s, and the transüparent window w; posterior pit wall pw with a pair of large bulges bu; gp glandular pouches; tu tubules; vs vesicular structures; ts surface cuticula of the tergite reaching up to the posterior border of the pit opening; vf ventral fold of T7.

FIGURE 18A–J. Structures of L. vesiculosa.—A–H. Central region of the male T7 with glandular pit showing the high variability in the shape of the posterior pit wall pw and the vesicular structures vs. A: holotype, superficial focus stacking; B: another specimen with deep focus stacking; C–H: three specimens, each with deep (C,E,G) and superficial (D,F,H) focus stacking.—Further abbreviations: ab, pb anterior, posterior border of pit opening; bu bulges of posterior pit wall; ed edge of the excavation; gp glandular pouch; s stabilising bracelet; sa strongly sclerotised area.—I,J: Left male (G) and female (H) tegmen (anteriorly at the right, posterior border below), bristles of the lightly coloured area between the dark longitudinal stripes not inserted in the center of a dark spot (arrowheads, compare with Fig. 24F–I).—Enlargements: Same scale forA–H.— Identifications:A,I (Ma 5/8, holotype), B (Ma 3/3), C,D (Ma 6 /4), E,F (Ma 40/1), G,H (Ma 37/1), J (Ma 5/7).

FIGURE 19A–N. Main structures of L. trivittata.—A–G. Male tergites. A: T1–4; B: T5; C: T6; D: T7 with gp glandular pouches, tu tubules, and pit pi (for more details see Fig. 21C,D); E,G: T8, (G) with anterior part in higher enlargement to show the rough sclerotisation at the anterior border; F: T9, with lateral lobes (ll).—H,I. Left tegmen of male (H) and female (I).—J,K. Hindwing lobe l with part of metanotum mt of male (J) and female (K), arrows point to the excavated apices.—L–N. Male genital hook, with sh shaft, ve velum, ap apical process, cl claw and its crest cr; arrow points to a rather strong bulging out of the shaft opposite the base of the claw.—Enlargements: Same scale in A–F and in H,I.—Identifications:A–C,E–G,M,N (Sz 7/4), D,L (It 34/3), H (Sz 7/10), I (7/8), J (Sz 2/2), K (Sz 9/5).

FIGURE 21A–J. Structures of L. trivittata (A–I) and L. habbachii (J).—A,B. Left male (A) and female (B) tegmen (anteriorly at the right, posterior border below), bristles of the lightly coloured area between the dark longitudinal stripes not inserted in the center of a dark spot (arrowheads, compare Fig. 24F–I).—C–I. Structures of the T7 glandular pit. Abbreviations: ab, pb anterior, posterior border of pit opening; aw anterior pit wall with ec excavation, s stabilising bracelet (only partly visible), sa strongly sclerotised area, and w transparent window; pw posterior pit wall with bu hemispherical bulges. C,D: Slitlike pit opening, (C) focus stacking not further down than to the pit opening, (D) focus stacking throughout the whole object; E: Specimen showing a wider pit opening, s more completely visible, window w becoming visible; F: Same specimen in higher magnification, with bottom of pit in focus, showing the outlets of the T7 glands into the pit: pouches gp via their strongly narrowed tailpieces tp, tubules tu with a wider opening, presumably near ot; hemispherical bulge bu, in this figure out of focus; G,H: Specimen with moderately long pit, focus stacking in (G) superficial, in (H) throughout the whole object, in the latter bulge bu visible, the horizontal line xy presumably caused by a bend or fold in the posterior pit wall; I: Specimen with relatively long pit (size 4).—J. Right hindwing lobe l of the male of L. habbachii.—Identifications:A (Sz 7/10), B (Sz 7/8), C,D (It 34/3), E,F (It 34/2), G,H (Al 34b/1), I (Sa 21/19), J (Al 36/7, holotype).

FIGURE 22A–M. Male structures of L. habbachii and of L. spec. A.—A–H,L. L. habbachii, male holotype. A: T2,3; B: T4; C: T5; D: T6; E: T7 with glandular pit pi and pouches gp, the latter not well stretched; F: pit in more detail: ab, pb anterior, posterior border of pit opening; aw, pw anterior, posterior pit wall, the first with the strongly scerotised area sa, and a slight posterior excavation ec, the latter with apair of hemispherical bulges bu; G,H:left tegmen, (G) lightlycoloured area beween the arrows shown in (H) in more detail: bristles lost, but circular bases still visible; they are not positioned in the center of a dark spot (arrowhead); L: pronotum.—I–K,M. Luridiblatta sp. A. I–K: tegmina; (I) left tegmen, lightly coloured area between arrows shown in (J) in more detail, (K) respective aerea from the right tegmen: some of the bristle bases in the center of a—though only weakly—dark spot; M: pronotum.—Enlargements: Same scale in A–E.—Identifications:A–H,L (Al 36/7, holotype), I–K, M (Bo 1298)

FIGURE 34 A–O. Pronotum (A–K), resp. pronotum, mesonotum and tegmina (L–O) of the Luridiblatta species designated on the corresponding figures.—Enlargements: Length of scale in all specimens 0,5 mm.—Identifications: A (Sp 45/2, holotype), B (Ma 14/6, holotype), C (Ma 5/8, holotype), D (Is 11/1), E (Is 13/4), F (Kr 23/2, holotype), G (Cy 18/1, holotype), H (Cy 23/1), I (Cy 24/1), J (Cy 29/3), K (Cy 29/2), L (Kr 20/2), M (Is 22/3), N (Sz 7/4), O (Sz 9/5).

FIGURE 35 A–I. Colouration of female tergites in Luridiblatta species.—A–C. Longitubulata-group (comparable colouration also in L. gibberosa).—D. Trivittata-group (colouration of the female of L. habbachii not kown).—E–H. Beybienkoi-group (similar colouration also in L. beybienkoi).—Abbreviations of the dark patches: m mesal, sm submesal, l lateral, sl sublateral, ts transversal stripe; arrows point to the mesal patch of T1 showing characteristic differences between the first two and the third species group.—Identifications: A (Sp 47/15), B (Ma 3/20), C (Ma 16/Y), D (Sa 21/17), E (Is 13/4), F (Gr 1/8), G (Cy 25/3), H (Cy 30/3), I (Bo 1302).

FIGURE 36 A–K. Characters of the genus Luridiblatta and its species groups.—A,B. Colouration of thoracal nota in halfgrown or older larvae of Luridiblatta. Meso- and metanotum in the species of the beybienkoi-group (B, L. beybienkoi) as compared to the other two species groups (A, L. trivittata) with two more dark patches (arrow).—C,D. Bristles on T5 in the species of the longitubulata- and trivittata- group (C, L. trivittata) mainly large and of spatular shape, with clavate tip, in the beybienkoi-group (D, L. graeca) small, with acute tip.—E,F. Female terminalia of L. vesiculosa, with genital sclerites, ventral view, posterior on top. Dorsal complex (E), with c cerci, pp paraprocts, v valves of ovipositor, bd, bv dorsal, ventral basivalvular sclerites; right (bd) much longer than left one, median part by (bv) covered. Ventral complex (F): laterosternal shelf ls, with relatively long arms a, right one apically damaged.—G,H. Male subgenital plate S9 (G), with genital sclerites (except the hook), dorsal view: anterior apodemes aa, endophallus apodeme ea, cleft sclerite cs, R3 sclerite, and stylus s; the latter in higher magnification (H), partly covered with tiny scales.—I–K. Male terminalia of L. fenestrata, with posterior border of the supraanal plate pt, cerci c.—Enlargements: Same scale for E,F and for I–K.—Identifications:A (It 34/7), B (Is 20/2), C (Sz 7/4), D (Kr 23/2, holotype), E,F (Ma 46/3), G,H (It 34/3), I,J,K (Ma 14/12,13,11).

FIGURE 37. Distribution of the species of Luridiblatta occurring in Portugal, Southern Spain and Morocco. There are also one or two localities of L. longitubulata in Middle Algeria (Fig. 39).

FIGURE 43. Cladogram of the Luridiblatta species reconstructed via the states of five characters listed below. The crown species on the tree are well distinguished by autapomorphies; but since these cannot contribute to the analysis of the phylogeny they are not inserted on the tree.