Labidostomis (Labidostomis) kantneri Warchałowski, 2004

Bezděk, Jan, 2018, Revision of Labidostomis (Coleoptera: Chrysomelidae: Cryptocephalinae: Clytrini) with large united elytral spot from Iran and adjacent countries, Zootaxa 4457 (4), pp. 501-519 : 505-507

Labidostomis (Labidostomis) kantneri Warchałowski, 2004

( Figs 2 , 8 , 14 , 20 , 30–31 )

Labidostomis kantneri Warchałowski, 2004: 558 (original description); Regalin & Medvedev 2010: 571 (catalogue); Warchałowski 2010: 80 (key).

Type locality. “ Iran Fars Prov., Zagros mts. , 4 km S. Dasht-E-Arzhan, 29°34’N 51°56’E ”.

Types examined. Paratypes: 3 ♂♂, “Iran, 21.–22.iv.2000 / Fars Prov., Zagros Mts. / 4 km S Dasht-e-Arzhan / (29°34´N, 51°56´E), 2000 m [w, p] // Iran 2000 Czech Biological / Expedition / J. Hájek & M. Mikát lgt. [w, p] // Labidostomis / kantneri mihi / det. A. Warchalowski [w, p] // Paratypus [r, p]” (JBCB); 3 ♂♂ 5 ♀♀, “S IRAN, prov. Fars / 11 km W Dašt-e-Aržan / (W Širaaz) 1.V.2002 / lgt. S. Kadlec [w, p] // coll. F. Kantner / Lipí—CZ [w, p] // Labidostomis / kantneri mihi / det. A. Warchalowski [w, p] // Paratypus [r, p]” (NMPC); 1 ♂ 1 ♀, “S IRAN, prov. Fars / 11 km W Dašt-e-Aržan / (W Širaaz) 1.V.2002 / lgt. S. Kadlec [w, p] // Labidostomis / kantneri mihi / det. A. Warchalowski [w, p] // Paratypus [r, p] // České Budějovice / coll. F. Kantner / Czech Republic [w, p]” (NMPC).

Additional material examined. 8 specimens — IRAN: Fars prov.: 15 km S of Dasht Arjan , 2261 m, 2.– 6. v.2016, 2 ♂♂ 2 ♀♀, M. Obořil leg. ( BMNH) ; 7 km SW of Dasht Arjan , 29°38´10.5´´N 51°55´01´´E, 2100 m, 5. v.2016, 1 ♀, D. Frank leg. ( DFCP); Dash-e Arzhan, oak nature reserve, 29°34´02´´N 51°56´44´´E, 2100–2300 m, 28. iv.2010, 1 ♂, A. Skale leg. ( FFCJ); Dasht-e Arzhan, oak nature reserve, 29°34´02´´N 51°56´44´´E, 2100–2300 m, 29. iv.2010, 1 ♀, A. Weigel leg. ( NMEG) ; 15 km E of Dasht Arjan , 29°33´23.44´´N 51°56´45.47´´E, 2195–2213 m, 27.–29. v.2015, 1 ♂, M. Obořil leg. ( JBCB).

Diagnostic characters. Body length: ♂♂ 6.0–6.5 mm; ♀♀ 4.6–6.2 mm.

Colouration. Labrum yellow. Elytra with small black humeral spot and large united discal spot with anterior margin oblique and slightly concave, anterior tip not reaching scutellum ( Figs 30–31 ).

Head ( Fig. 14 ) with large frontal impression covered with large punctures and horizontal wrinkles. Anterior clypeal processes very large, robust, with inner margins angulated and with apical tips shortly rounded, clypeal margin between processes pointed in middle. Mandibles moderately wide, with sharp dorsal keel. Only inner slopes of mandibles visible in dorsal view.

Aedeagus ( Fig. 2 ) with apical part triangular with straight margins and obtuse tip. Dorsal median impression with thin median keel, lateral sides parallel, convergent posteriorly. Apex of aedeagus with inward triangular crooked folds. Operculum semicircular. Non-everted anterior sclerite visible as long thin median process. Ventrally with two elongate impressions and wide obtuse median keel.

Everted aedeagus ( Fig. 20 ). Ejaculatory guide formed by two ear-like plates.

Spermatheca ( Fig. 8 ). Vasculum widely round, apical part slightly narrower than basal part, moderately convergent with round apex, basal part distinctly wider. Bulbus subtubular. Ductus spermathecae ca three times as long as vasculum, coiled in whole lenght.

Distribution. Iran (Fars province, known only from the vicinity of Dasht-e Arjan).

Differential diagnosis. Labidostomis kantneri is characterised by long and wide clypeal processes contrary to shorter and narrower ones in L. shirazica ( Figs 14, 17 ). Ventral side of aedeagus with elongate shallow impressions in L. kantneri while with smaller impressions in L. shirazica ( Figs 2, 5 ). The ejaculatory guide is of same shape as in both L. kantneri and L. shirazica ( Figs 20 , 24 ). The females of L. kantneri have slightly longer ductus spermathecae with ca 20 small simple coils while ductus of L. shirazica is shorter and straight without any coils ( Figs 8, 11 ).

Comments. Because the structure of ejaculatory guide in both L. kantneri and L. shirazica is almost the same, I cannot exclude that L. kantneri is only local form of L. shirazica . The known localities of both taxa ( Fig. 43 ) show that L. kantneri occurs in a very small area around Dasht-e Arjan (Fars prov.) close to the large distributional area of L. shirazica . However, there are additional constant characters to differ both taxa like the shapes of clypeal processes or of ductus spermathecae. More specimens to study are necessary to definitely resolve the status of both taxa. At the moment I treat both of them as separate species.

Figures

FIGURE 43. Map with distribution of Labidostomis species in Iran (●—Labidostomis elegans; □—L. kantneri; ○—L. luristanica; ▲—L. shirazica).

FIGURES 1–6. Aedeagus in dorsal, lateral and ventral views (as—anterior sclerite, op—operculum, di—dorsal impression). 1—Labidostomis elegans; 2—L. kantneri; 3—L. limbata; 4—L. luristanica; 5—L. shirazica; 6—L. regalini sp. nov. Scale bar: 0.5 mm.

FIGURES 7–12. Spermatheca. 7—Labidostomis elegans; 8—L. kantneri; 9—L. limbata; 10—L. luristanica; 11—L. shirazica; 12—L. regalini sp. nov. Scale bar: 0.5 mm.

FIGURES 13–18. Male mandibles and clypeal processes. 13—Labidostomis elegans; 14—L. kantneri; 15—L. limbata; 16— L. luristanica; 17—L. shirazica; 18—L. regalini sp. nov. Scale bar: 0.5 mm.

FIGURES 19–21. Aedeagus with everted internal sac and ejaculatory guide in different views (eg—ejaculatory guide, lslateral sclerites, as—anterior sclerite). 19—Labidostomis elegans; 20—L. kantneri; 21—L. limbata. Not to scale.

FIGURES 26–31. Habitus. 26—Labidostomis elegans (male, 6.7 mm); 27—L. elegans (male, 6.5 mm); 28—L. elegans (male, 8.7 mm); 29—L. elegans (female, 6.2 mm); 30—L. kantneri (paratype, male, 6.2 mm); 31—L. kantneri (female, 5.5 mm).

FIGURES 22–25. Aedeagus with everted internal sac and ejaculatory guide in different views. 22—Labidostomis luristanica; 23—L. luristanica (specimen from Zanjan prov.); 24—L. shirazica; 25—L. regalini sp. nov. Not to scale.