Lachnaia (Barathraea) straminipennis ( Lucas, 1845 )

Bezdċk, Jan & Regalin, Renato, 2015, Identity of species-group taxa of the Western Palaearctic Clytrini (Coleoptera: Chrysomelidae) described by Maurice Pic and Louis Kocher, Acta Entomologica Musei Nationalis Pragae (suppl.) 55, pp. 1-114 : 32-34

Lachnaia (Barathraea) straminipennis ( Lucas, 1845)

( Figs 15–17 , 118–125 )

Clythra (Lachnaea) straminipennis Lucas, 1845: 122 (original description).

Barathraea octomaculata Pic, 1895c: 243 (original description), syn. nov.

Lachnea (Barathraea) octopunctata: PIC (1897c) : 204 (incorrect subsequent spelling).

Lachnea (Barathraea) separata Pic, 1897c: 204 (originaldescription), syn. nov.

Type localities. Clythra straminipennis : ‘environs d ̓ Oran’ [ Algeria]. Barathraea octomaculata : ‘Tanger’ [ Morocco]. Lachnea separata : ‘Andalousie,? Sicilie’ [patria falsa].

Type material examined. Clythra straminipennis : SYNTYPES: 1 ♂, ‘[blank small blue round label] // Museum Paris [p] / collection / Lucas [w, h] // SYNTYPE [r, p] // Lachnea / straminipennis / M… [partly illegible, w, h]’ ( MNHN – coll. generale) ; 1 ♂, ‘[blank small blue round label] // Museum Paris [p] / collection / Lucas [w, h] // SYNTYPE [r, p] // Clythra / straminipennis Lucas [w, h]’ ( MNHN – coll. generale).

Barathraea octomaculata : SYNTYPES: 1 ♂, ‘Tanger [w, h] // Tanger / Maroc leg.? [w, h] // 8 maculata / Pic [w, h] // type [w, h] // Museum Paris [p] / collection / Pic [w, h] // LECTOTYPE [r, p] // 1 [w, h] // Lachnaia (Barathraea) / octomaculata Pic, 1895 / Tanger-Maroc, ♂ / LECTOTYPE - 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♀, ‘Tang [w, h] // Tanger / Maroc leg.? [w, h] // type [w, h] // Museum Paris [p] / collection / Pic [w, h] // 8 maculata Pic [w, h] // PARALECTOTYPE [r, p] // Lachnaia (Barathraea) / octomaculata ♀ / Pic, 1898 [sic!] [h] / J. C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♂, ‘Tanger [w, h] // Tanger / Maroc leg.? [w, h] // type [w, h] // Barathraea / 8 maculata / Pic [w, h] // PARALECTOTYPE [r, p] // Bonne esp. diff. / de cerealis par / la pubescence du / corps d ̓ aprés Bedel / qui vidit [w, h] // 2 [w, h] // Lachnaia (Barathraea) / octomaculata ♂ / Pic, 1895 [h] / J. C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♀, ’80. [w, h] // Tanger [w, h] // type [w, h] // Barathraea / 8 maculata Pic [w, h]’ ( MNHN – coll. Pic).

Lachnea separata : SYNTYPES: 1 ♂, ‘Andalus [w, h] // Andalousie / Espagne leg.? [w, h] // type [w, h] // LECTO-TYPE [r, p] // v. separata Pic [b, h] // Museum Paris [p] / collection / Pic [w, h] // separata Pic [w, h] // 1 [w, h] // Lachnaia (Barathraea) / separata Pic, 1897 – ♂ / Andalousie-Espagne / LECTOTYPE - 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♂, ‘Andalus [w, h] // Andalousie / Espagne leg.? [w,h] // separata Pic [w, h] // PARALECTOTYPE [r, p] // ♂ [w, h] // Lachnaia (Barathraea) / separata ♂ / Pic, 1897 [h] / J. C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♂, ‘Sicile [w, h] // Sicile / Italie - leg.? [w, h] // type [w, h] // PARALECTOTYPE [r, p] // separata Pic [w, h] // Museum Paris [p] / collection / Pic [w, h] // 3 [w, h] // Lachnaia (Barathraea) / separata ♂ / Pic, 1897 [h] / J. C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♀, ‘Andalus [w, h] // Andalousie / Espagne – leg.? [w, h] // Type [w, h] // PARALECTOTYPE [r, p] // 5 [w, h] // Lachnaia (Barathraea) / separata ♀ / PIC, 1897 [h] / J.C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♀, ‘Andalus [w, h] // Andalousie / Espagne – leg.? [w, h] // Type [w, h] // PARALECTOTYPE [r, p] // 6 [w, h] // Lachnaia (Barathraea) / separata ♀ / PIC, 1897 [h] / J.C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♀, ‘Andalus [w, h] // Andalousie / Espagne – leg.? [w, h] // Type [w, h] // PARALECTOTYPE [r, p] // 4 [w, h] // Lachnaia (Barathraea) / separata ♀ / PIC, 1897 [h] / J.C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic); 1 ♀, ‘Andalus [w, h] // Andalousie / Espagne – leg.? [w, h] // Type [w, h] // PARALECTOTYPE [r, p] // 8 [w, h] // Lachnaia (Barathraea) / separata ♀ / PIC, 1897 [h] / J.C. Bourdonné dét. [p] 2009 [w, h]’ ( MNHN – coll. Pic).

Distribution. Algeria and Morocco ( REGALIN & MEDVEDEV 2010b).

Comments. We studied the aedeagi of the type specimens of all three taxa and consider them similar with slight differences in the width of the apical margin, the depth of the anterolateral incisions, and the width of visible sclerites ( Figs 120–125 ). Although available material is limited we treat L. straminipennis as a variable species forming local forms. Similarly as in Tituboea paykullii ( Lacordaire, 1848) and Clytra novempunctata , the elytral surface of L. straminipennis can be either glabrous (described as L. octomaculata ), with indistinct traces of setae, or glabrous (described as L. separata ), or densely pubescent (described as L. straminipennis ). Also the shape of clypeal excavation and of clypeal processes are variable throughout the populations ( Figs 15–17 ).

Lachnaia straminipennis was described based on specimens with densely pubescent pronotum and elytra. The aedeagus has narrow apical margins, shallow anterolateral incisions and visible sclerites with long and narrow apical processes (see Figs 124–125 , correctly pictured also by COBOS (1956)). The clypeal excavation is regularly concave, apical processes moderately long and wide ( Fig. 15 ). The population with pubescent elytra seems to be restricted to northwestern Algeria and the adjacent part of Morocco.

The population described as L. octomaculata is characterized by the aedeagus with wider apical margins, deep and almost rectangular anterolateral incisions, wider and shorter sclerite processes ( Figs 120–121 ), glabrous elytra, clypeal excavation regularly concave and clypeal processes short and wide ( Fig. 16 ). This population covers most of Morocco.

The specimens described as L. separata have somewhat intermediate shape of the aedeagus and its sclerites between L. straminipennis and L. octomaculata ( Figs 122–123 ), clypeal excavation with subtriangularly formed base and clypeal processes narrow but longer ( Fig. 17 ). Elytra are glabrous in two syntypes and with indistinct traces of setae in the third syntype. The distribution of this population is unknown. PIC (1897c) described Lachnea separata from ‘ Andalousie,? Sicilie’. We treat both localities as patriae falsae as this species occurs neither in Spain nor in Sicily. REGALIN & MEDVEDEV (2010b) mistakenly published it from Tunisia based on GRASSO (1963). Based on the accompanying picture of aedeagus, the distributional data of L. separata in GRASSO (1963) without any doubts refer to L. padillai Tomov, 1982 .

The type specimens of both Barathraea octomaculata and Lachnea separata bear the labels ‘lectotype’ or ‘paralectotype’ added by J.-C. Bourdonné, but the lectotype designations have never been published. Thus we treat all the type specimens as syntypes.

Figures

Figs 15–18. 15–17 – Variability of outline of male head in Lachnaia (Barathraea) straminipennis (Lucas, 1845): 15 straminipennis type; 16 – octomaculata type; 17 – separata type. 18 – aedeagus of Otiothraea rotroui (Kocher, 1961) (dorsal, dorsal with internal sclerites, lateral and ventral views).Scale bars: 2 mmfor Figs 15–17, 0.5 mm for Fig. 18.

Figs 118–125. 118–119 – Lachnaia straminipennis (Lucas, 1845) (syntype of L. separata Pic, 1897) (male, 9.2 mm): 118 – habitus; 119 – labels. 120–125 – Variability of aedeagus of Lachnaia straminipennis (left dorsal view, right lateral view): 120–121 – octomaculata form; 122–123 – separata form; 124–125 – straminipennis form.