Brachinus (Brachynidius) limbellus Chaudoir, 1876

Akhil, S. V., Divya, M. & Sabu, K. Thomas, 2020, Bombardier beetles of genus Brachinus Weber, 1801 (Carabidae: Brachininae Brachinini) from India, Zootaxa 4816 (4), pp. 576-600 : 584-585

Brachinus (Brachynidius) limbellus Chaudoir, 1876

Fig. 2d

= Brachinus clarescens Bates, 1892

Brachinus limbellus Chaudoir, 1876: 70 ; Andrewes, 1923: 42; 1930a: 50; Hrdlička, 2003: 216; 2017: 477

Brachinus clarescens Bates, 1892: 395 ; Andrewes, 1928: 589; Hrdlička, 2003: 216; 2017: 477

Type locality. Bangladesh: Dhaka, coll. M. S. Stevens.

Type depository. MNHN .

Specimen examined (n=1). Syntype labelled “‘Deccan’, coll. Stevens, ‘ suturiger ’ Chaudoir, ‘ limbellus’ Chaudoir”.

Description. Length 4.5–5.0 mm. Head, pronotum, sutural line, base of elytra and antennal segments 3–11 reddish brown; antennal segments 1–2, palpi and legs reddish yellow; elytra brownish black.

Head stout, as long as wide, smooth, glabrous; frontal foveae clear, moderately deep; eyes protruding; antennae short, stout, not reaching the middle of the elytra, antennal apical segment longest, segment 3 shorter than segment 1 and 2 combined.

Pronotum as wide as long, punctated, pubescent; disc with apical and basal margins straight, lateral portion of apical margin slightly projecting forward; disc laterally with anterior 2/3rd convex, posterior 1/3rd divergent, hind angle blunt, obtuse, projecting laterally; median groove faint, superficial; lateral bead very narrow, dark brown.

Elytra convex, base narrow, humerus straight, corners rounded, narrow, pubescent with closely placed setae; apex with a very faint re-entrant angle, having a membranous border; scutellum very small; lateral margin of disc lined with a flat, reddish yellow bead which increases in width towards apex; very weak striations; sutural colour extending to the apex, broadest at base, extending between first and third striae, gradually narrowed towards apex.

Distribution. INDIA: Assam; Bengal: Kolkata; Odisha: Puri; Maharashtra: Bandra; Tamil Nadu: Thiruchirapalli. SRI LANKA: Murunkan. BANGLADESH: Dhaka. MYANMAR: Rangoon, Senmigion, Palon, Magwe. PAKISTAN ( Hrdlička 2003, 2017).

Figures

FIGURE 2. Dorsal habitus of Indian Brachinus species (cont.): a) B. flaviventris Chaudoir, 1876 (syntype, MNHN); b) B. hazardi Andrewes, 1930 (holotype, BMNH); c) B. illotus Chaudoir, 1876 (syntype, MNHN); d) B. limbellus Chaudoir, 1876 (syntype, MNHN); e) B. limbicollis Chuadoir, 1876 (syntype, MNHN); f) B. modestus Schmidt-Göbel, 1846 (holotype, NMPC); g) B. peltastes Andrewes, 1931 (holotype, BMNH); h) B. reyi Andrewes, 1924 (holotype, BMNH); i) B. sordidus Andrewes, 1933 (holotype, BMNH)