Metadorodocia frolovi, Akhmetova, Lilia & Montreuil, Olivier, 2010

Akhmetova, Lilia & Montreuil, Olivier, 2010, Revision of Metadorodocia Machatschke, 1957, a genus endemic to Madagascar (Coleoptera: Scarabaeidae: Rutelinae: Adoretini), Zootaxa 2401, pp. 61-68 : 64-67

Metadorodocia frolovi n. sp.

Figs. 1–4 , 7, 9 , 11, 13, 14 , 15

Type material. Holotype male with the label “Madagascar-E. Périnet- 950m. 11/ 19-III-55 H. de Toulgoët” ( MNHN). Twenty-nine paratypes: 4 males with the same data as the holotype; 2 males, “Périnet C n Olsoufieff”; 2 males, “lumière” and “Périnet XII.35 ”; 2 males, “ Madagascar Mandritsara, C n Oberthür”; 4 males and 3 females, “ Madagascar Nord”; male and 2 females, “Sandrangato” and “Institut Scientifique Madagascar ”; male, “Madagascar-Est dct. Andapa Anjanaharibe 1600m IV- 60 P. Soga” and “Institut Scientifique Madagascar ”; male, “ Madagascar Vohilava 60 m. Faraony” and “Museum Paris 1934 R. Catala”; male, “ Madagascar Est Rte. Moramanga à Anosibe” and “A. Peyrieras IV-1976 ”; female, “ Madagascar Est Marojejy Rés. nat. int. XII Beondroka 1200m XII-1960 P. Soga” and “Museum Paris”; 3 males, “Périnet” and “Institut Scientifique Madagascar ”; male, “ Madagascar Antsianaka et lac Alaotra 2e. Trimestre 1889 Perrot Frères”; male, “Ampitameloka 840m sud Moramanga 30 XII 56 P. Griv.” and “Institut Scientifique Madagascar ” ( MNHN).

Description. Holotype, male ( Figs. 4 , 7, 9 ). Large-sized beetle (length 16 mm) with elongate, rather convex, shiny body ( Fig. 9 ). Color light brown with darker brown, almost black, venter; elytra reddish-brown with reddish-yellow pattern.

Head with clypeus rounded, turned up on the margins, relatively short, length smaller than 1/2 width. Genae very small, almost not protruding past eyes. Clypeus and disc of head glabrous.

Pronotum brown with darker lateral sides, trapezoidal, slightly more than 2 times wider than long, dorsal surface slightly convex. Anterior angles acute, posterior angles almost right. Dorsal surface with bunches of rather large, rounded punctures near the base laterally. Each puncture has very short, thin, pale seta in the center. Lateral margins with small dense frequently joined punctures. Disc of pronotum glabrous. Scutellum paler than dark part of elytra, subtriangular, slightly rounded laterally, with sparse punctures bearing very short, white setae.

Elytra relatively convex, slightly wider than pronotum, brown, with longitudinal yellow maculae on each elytron: one smaller oval macula located near the base, two smaller oval longitudinal maculae located near the lateral margins, longitudinal yellow stripe bordering the sutural margin, not connected to the basal maculae ( Fig. 9 ). Elytra sparsely, irregularly, and finely punctuate, and with irregular sparse, thin, pale setae varying in length. Epipleurae and apices of elytra with thick, sparse setae.

Legs include protibiae with 3 teeth on outer margin, the middle tooth closer to the apical one.

Ve nt e r of body, excluding glabrous metasternal disc, with sparse, relatively long, thin, pale setae. Visible apical sternite of abdomen punctate basally ( Fig. 13 ).

Eight tergite shagreened, with sparse, long, thin, pale setae.

Aedeagus with parameres ( Fig. 4 ) with small processes in dorsolateral view ( Fig. 7 ). Endophallus similar to M. vittata .

Variability. Paratypes differ from the holotype in size (length from 16–19 mm) and in intensity of the coloration of the body. Males differ slightly in the shape of their parameres ( Figs. 1–4 ).

Differential diagnosis. M. frolovi can be separated from M. vittata by the presence of 4 distinct yellow maculae on each elytron ( Fig. 9 ) and by the parameres with small processes on the dorsal side ( Fig. 7 ).

Distribution. Eastern Madagascar ( Fig. 11 ).

Etymology. This species is named after our colleague A.V. Frolov (St. Petersburg), a specialist in scarab beetles.

Figures

FIGURE 15. Metadorodocia frolovi. Female genitalia, dorsal view (not to scale). sp — spermatheca; gs — gland of spermatheca; ov — oviduct; bc — bursa copulatrix; dd — digestive duct.

FIGURES 1 – 6. Metadorodocia. M. frolovi (1 – 4), M. vittata (5, 6). 1 – 6 — aedeagi in dorsal and lateral views (4 — holotype).

FIGURES 7 – 10. Metadorodocia. M. frolovi, holotype (7, 9), M. vittata (8, 10). 7, 8 — parameres, not to scale (arrow indicates presence or absence of process, see text); 9, 10 — dorsal view (label not to scale).

FIGURES 11 – 14. Metadorodocia. M. vittata (12), M. frolovi (13, 14). 11 — distribution map of M. frolovi and M. vittata; 12 — endophallus; 13, 14 — apical visible sternite of abdomen.