Brumus octosignatus (Gebler, 1830)

Li, Wenjing, Chen, Bingxu, Huo, Lizhi, Chen, Xiaosheng & Wang, Xingmin, 2020, New records and checklist of Chilocorini (Coleoptera: Coccinellidae) from China, Biodiversity Data Journal 8, pp. 51092-51092 : 51092

Brumus octosignatus (Gebler, 1830)

Coccinella octosignata Gebler, 1830 in Gebler 1830: 225.

Coccinella deserta Motschulsky, 1840 in Motschulsky 1840: 175.

Brumus desertorum Mulsant, 1850 in Mulsant 1850: 493.

Brumus 8-signata (Gebler, 1830) Crotch, 1874 see Crotch 1874: 38.

Brumus octosignatus (Gebler, 1830) Crotch, 1874, see Crotch 1874: 195, Barovskij 1927: 196, 199; Korschefsky 1932: 199; Mader 1955: 803, 805; Bielawski 1975: 255; Bielawski 1984: 315; Kovář 1997: 36.

Materials

Type status: Other material. Occurrence: recordedBy: Wenjing Li; individualCount: 2; sex: 1 male, 1 female; lifeStage: adult; Taxon: scientificName: Brumusoctosignatus (Gebler, 1830); Location: country: China; stateProvince: Xinjiang; locality: Kezier village, Baicheng County ; verbatimElevation: 850 m; verbatimCoordinates: 43°27.23'N; 82°27.40'E; georeferenceProtocol: label; Identification: identifiedBy: Wenjing Li; dateIdentified: 2017; Event: samplingProtocol: sweeping; eventDate: 31/07/1995; Record Level: basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: recordedBy: Wenjing Li; individualCount: 4; sex: 2 male, 2 female; lifeStage: adult; Taxon: scientificName: Brumusoctosignatus (Gebler, 1830); Location: country: unknown; stateProvince: unknown; locality: unknown ; verbatimElevation: unknown; verbatimCoordinates: unknown; Identification: identifiedBy: Wenjing Li; dateIdentified: 2017; Record Level: basisOfRecord: PreservedSpecimen

Description

TL: 3.80-4.00 mm, TW: 2.80-3.20 mm, TH: 1.87-2.07 mm, TL/TW: 1.32-1.35, PL/PW: 0.47-0.50, EL/EW: 1.05-1.10.

Body oval, moderately convex. Head, mouthparts and antenna brownish-yellow. Pronotum orange-yellow, with a black spot at centre of basal margin. Scutellum black. Elytra orange-yellow, with four pairs of black spots, the first one situated at the humeral angle; the second one situated at basal 2/5, near suture; the third one situated at basal 3/5, near outer margin; the fourth one situated basal 4/5, near suture (Fig. 3 a-c). Underside orange-yellow, densely covered with short, greyish pubescence. Abdominal postcoxal lines complete and semicircular. Posterior margin of male abdominal ventrite 5 and of ventrite 6 distinctly emarginate (Fig. 3 d).

Male genitalia: penis slender, penis capsule with short outer and long inner arm, apex of penis acute with membranous appendage (Fig. 3 e-f). Tegmen stout, penis guide narrow at base, widest at basal 1/2, then gradually converging to blunt tip, symmetrical in ventral view; penis guide in lateral view, widest at base, parallel along basal 1/3, after that gradually converging to apex; parameres nearly as long as the penis guide with dense short setae on the inner sides and distal end with a group of short setae in lateral view (Fig. 3 g-h).

Female genitalia: coxites distinctly elongate (Fig. 3 i). Spermatheca approximately C-shaped, cornu without appendage.

Diagnosis

This species can be easily distinguished from other species of Brumus by the following combination of characters: pronotum with a black spot at central of basal margin; elytra orange-yellow, with four pairs of black spots; parameres nearly as long as the penis guide.

Distribution

Azerbaijan, Armenia, France, Italy, Russia: south European Territory, Afghanistan, Iran, Iraq, Kyrgyzstan, Mongolia, Tajikistan, Turkmenistan, Turkey, Uzbekistan ( Gebler 1830, Motschulsky 1840, Mulsant 1850, Crotch 1874, Barovskij 1927, Mader 1955, Bielawski 1975, Bielawski 1984, Kovář 1997) and Xinjiang, China (present study) (Fig. 4 ).

Figures

Figure 3. Brumus octosignatus (Gebler, 1830). a. dorsal view; b. lateral view; c. frontal view; d. abdomen; e. penis; f. apex of penis; g. tegmen, lateral view; h. tegmen, ventral view; i. ovipositor. Scale bars: 0.1 mm.

Figure 4. Distribution map. (▲) Priscibrumus disjunctus Canepari, 1997; (●) Priscibrumus uropygialis (Mulsant, 1853); (○) Brumus octosignatus (Gebler, 1830).