Cerocoma (Meloides) marginiventris Reitter, 1889

Turco, Federica & Bologna, Marco A., 2011, Systematic revision of the genus Cerocoma Geoffroy, 1762 (Coleoptera: Meloidae: Cerocomini) 2853, Zootaxa 2853 (1), pp. 1-71 : 41-42

Cerocoma (Meloides) marginiventris Reitter, 1889 stat. n.

Figs 2Z , 3Z , 4Z , 6Z , 7C

Cerocoma mühlfeldi var. marginiventris Reitter, 1889: 34 .

Cerocoma mühlfeldi var. pictiventris Reitter, 1890: 174 . syn. n.

Cerocoma muehlfeldi var. gloriosa, Reitter, 1913: 191 . (nec Mulsant, 1857)

Cerocoma gloriosa ab. marginiventris, Mařan, 1944: 89 .

Cerocoma (Cerocoma) kunzei ab. marginiventris, Kaszab, 1951: 264 , 266, 272.

Type locality. “Araxesthal” ( Reitter 1889). As for other species, this generic locality (the Araxes River valley) could refer to North East Turkey, Armenia or Azerbaijan.

Type specimens. As explained for C. prochaskana , we accept the unpublished selection of Reitter’s types, probably made by Kaszab , and we designate them lectotype and paralectotypes . Only exception is a female specimen of C. muehlfeldi v. pictiventris identified by Kaszab as the holotype . We prefer to designate as lectotype a male specimen preserved at the MNHN and leave the female in Budapest as a paralectotype .

Lectotype and one paralectotype of this species have been examined, together with the lectotype of C. muehlfeldi var. pictiventris and 2 syntypes (one at HNHM and one in the Chobaut’s collection at MNHN) that we designate as paralectotypes:

Lectotype ♂: Caucasus. / Araxesthal. / Leder. Reitter. (white with black frame, printed) // Coll. Reitter (white, printed) // Holotypus 1889 / Cerocoma Mühlfeldi / v. marginiventris / ♂ Reitter (white with red frame, printed and handwritten) // LECTOTYPE ♂ / Cerocoma muehlfeldi / v. marginiventris / Reitter, 1889 / Turco & Bologna des. 2009 (red, printed) ( HNHM). Last left palpomere and last two right antennomeres are missing.

1 paralectotype ♀: Caucasus. / Araxesthal. / Leder. Reitter. (white with black frame, printed) // Coll. Reitter (white, printed) // Allotypus 1889 ♀ / Cerocoma Mühlfeldi / v. marginiventris / Reitter (white with red frame, printed and handwritten) // PARALECTOTYPE ♀ / Cerocoma muehlfeldi / v. marginiventris / Reitter, 1889 / Turco & Bologna des. 2009 (red, printed) ( HNHM). Some parts of the specimen are missing: part of both eyes, last two right antennomeres, left antenna (except for the first two antennomeres) and the last two left protarsomeres.

Lectotype ♂: Caucasus. / Araxesthal. / Leder. Reitter. (white with black frame, printed) // C. Mühlfeldi / var. picti- / ventris m 1890 (white, handwritten) // C. Muhlfeldi / v. pictiventris / Rttr. (white, handwritten) // MUSEUM PARIS / 1942 / COLL. D R. A. CHOBAUT (white, printed) // LECTOTYPUS / Cerocoma mühlfeldi / var. pictiventris / Reitt. F. Turco & / M. Bologna des. 2007 (red, printed and handwritten) // Cerocoma / marginiventris / Reitter, 1889 / Federica TURCO det. 2005 (white, printed and handwritten) ( MNHN).

1 paralectotype ♀: Caucasus. / Araxesthal. / Leder. Reitter. (white with black frame, printed) // Holotypus 1890 / Cerocoma Mühlfeldi ♀ / v. pictiventris / Reitter (white with red frame, printed and handwritten) // Cerocoma kunzei / ab. marginiventris Rtt. / det. dr. Kaszab (white, printed and handwritten) // PARALECTOTYPE ♀ / Cerocoma muehlfeldi / v. pictiventris Reitter, 1890 / Turco & Bologna des. 2009 (red, printed) ( HNHM).

1 paralectotype ♀: Caucasus. / Araxesthal. / Leder. Reitter. (white, printed) // v. pictiventris Reitt. (white, printed) // MUSEUM PARIS / 1942 / COLL. D R. A. CHOBAUT (white, printed) // PARALECTOTYPE ♀ / Cerocoma muehlfeldi / v. pictiventris Reitter, 1890 / Turco & Bologna des. 2009 (red, printed) ( MNHN).

Description. Male. Body metallic green with short and sparse yellowish setae; frons with a central orange spot; abdomen green metallic, orange on sides and dorsally; antennae and mouthparts, including maxillary palpi, yellow-orange; legs yellow-orange except for metatarsi dark.

Head transverse with slightly protruding eyes. Maxillary palpi modified with palpomere II wide, flattened and slightly curved; III very swollen and rounded on the external side; IV with narrow base and then very distinctly widened to apex, especially on the internal edge ( Fig. 3Z ). Antennae modified with antennomere I bearing a narrow, long and very slightly curved expansion on the external side and dorsal keel wide, high and weakly curved apically; III–VI very modified and ventrally expanded; III, in dorsal view, slightly sinuate on the external side and with a very deep incision on the internal side and a short and broad appendix on the internal apex ( Fig. 7C ); V with short setae on distal face of ventral laminar expansion; VI with a very long, narrow and curved expansion and a tuft of long and erect setae on ventral side; IX weakly transverse and apically rounded ( Fig. 2Z ).

Protibial keel extended to proximal 2/3 of the length of tibia, with dorsal edge straight and anterior edge bearing an angular bulge, visible in lateral view ( Fig. 4Z ). Protarsomeres slightly enlarged; II with an obvious dorsal bulge.

Gonostyli, in lateral view, straight, with apical lobes directed forward; apical lobes, in dorsal view, swollen and parallel. Apex of aedeagus slightly pointed; aedeagal hooks equal in size. Sclerotised hooks of endophallus equal in size, both pointing outwards ( Fig. 6Z ).

Female. Not modified. Refer to key for diagnostic characters.

Taxonomy. This species has undergone various taxonomic changes. It was described as a variety of C. muehlfeldi by Reitter (1889) and was then considered as an aberration of C. gloriosa by Mařan (1944) and of C. kunzei by Kaszab (1951). C. marginiventris is similar to C. rapillyi in the shape of maxillary palpomere IV, large and securiform. It is clearly recognisable for the completely orange abdomen in C. rapillyi , compared to green metallic with orange sides in C. marginiventris and for the shape of antennomere III in dorsal view ( Figs 7B and C ).

Distribution. E Turkey, Armenia, Azerbaijan, NW Iran.

Figures

FIGURE 2. Male right antenna, lateral view: A, C. schreberi; B, C. martae; C, C. ephesica; D, C. prevezaensis; E, C. festiva; F, C. graeca; G, C. malatyensis; H, C. albopilosa; I, C. longiseta; J, C. barthelemyi; K, C. vahli; L, C. scovitzi; M, C. latreillei; N, C. adamovichiana; O, C. confusa; P, C. azurea; Q, C. turcica; R, C. muehlfeldi; S, C. schaefferi; T, C. prochaskana; U, C. dahli; V,C. bernhaueri; W, C. simplicicornis; X, C. gloriosa; Y, C. rapillyi; Z, C. marginiventris; AA, C. macedonica; AB, C. kunzei; AC, C. bodemeyeri. Scale bar = 1 mm.

FIGURE 3. Male right maxillary palp, dorsal view: for lettering refer to caption to Fig. 1. Scale bars = 1 mm (1: C–E, G–J, L– R, Y, AA–AC; 2: B, F, K, S–T, X, Z; 3: A, U–W).

FIGURE 4. Male right protibia, lateral view: for lettering refer to caption to Fig. 1. Scale bar = 1 mm.

FIGURE 6. Male external genitalia (from left to right: tegmen, dorsal and lateral views; aedeagus, lateral view): for lettering refer to caption to Fig. 1. Scale bars = 1 mm (1: A–E, H, L–M, R; 2: F–G, I–K, N–P, S–T, X–Y, AA–AC; 3: Q, U–W, Z).

FIGURE 7. Male antennomere III, dorsal view: A, C. gloriosa; B, C. rapillyi; C, C. marginiventris; D, C. macedonica; E, C. kunzei; F, C. bodemeyeri. Scale bar = 1 mm.