Brachinus grootaerti Tian and Deuve, new species
Creators: name: Tian, Mingyi
name: Deuve, Thierry
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Brachinus
Brachinus grootaerti

description: Brachinus grootaerti Tian and Deuve new species.
(Figs. 1, 5)
Holotype. ♂, labeled “Coll. I. R. Sc. N. B, the Philippines, C. Palawan, 5 km E. of Napsan, cleared primary forest, 0 9.42.256 N/118.31.034 E, 1–2. Dec. 2007, J. H. Lourens leg.” and “Coll. IRSNB, Achat J. H. Lourens, I. G.: 30.852”, in RISNB, Brusssels.
Length: 13.0 mm; Width: 5.4 mm. Habitus as in Fig. 1.
Medium sized; head, pronotum, elytra, tips of femora and tibiae black; tarsi, antennomeres 1–4 and ventral side of body dark brown; frontal spots, palps and other antennomeres brown; head and pronotum finely striate, with minute punctures. Head, pronotum and elytra with isodiametric microsculptural meshes.
Head longer than wide (HL/HW=1.02), with sparse, long setae; anterior margin of labrum straight, bearing sexsetose, clypeus with two long setae and a few short ones at base, glabrous medially; frons and vertex glabrous, eyes large and prominent; palps pubescent and subcylindrical; maxillary palpomere 4 longer than 3; labial palpomere 3 slightly longer than 2; ligula robust and wide, adnated to paraglossae posteriorly, both ligula and paraglossae multisetose at apex; mentum without median tooth, basal foveae large, rounded, smooth, surrounded by numerous mental and submental setae; both mentum and submentum multisetose; palpiger with two setae at base. Antennae extending at about middle of elytra; comparative length ratio of antennomeres 1–5 as 1, 0.4, 1.6, 1.1 and 0.9; antennomere 3 slightly longer than antennomeres 1 and 2 combined, antennomere 4 longer than 5.
Pronotum longer than wide, PW/PL=1.09, widest at about apical one fourth, fore margin with distinct median emargination, hind margin straight, lateral margin strongly sinuate before hind angle, hind angle acute and sharp; pronotal disc convex, weakly punctate, faintly wrinkled, with lateral setae at about middle and frontal portion.
Elytra elongate ovate, EL/EW=1.50, widest in the middle, pubescent; shoulders wide and square, not parallelsided; apex membrane and fringed; both costae and depressions faint, depressions wider than costae, rather flat, costae faintly convex.
Pro-episternum slightly tumescent, invisible from dorsal view, sparsely setose. Fore tibia with subapical spur externally.
Male genitalia (Fig. 5): median lobe of aedeagus slender, distinctly arcuate in middle, preapical portion sinuate, expanded at apex; apical portion broad, apical lamella shorter, wider than long, truncate at tip.
Female unknown
Remarks: Brachinus grootaerti n. sp. is the first species of the genus from Palawan Island. It is quite similar to B. philippinensis Tian & Deuve, but pronotum narrower, elytra broader, with shoulders distinctly square (broad in B. philippinensis); It also likes B. bigutticeps Chaudoir (Fig. 4) in appearance, but body is stouter, elytra and pronotum wider, and pro-episternum invisible from above (slightly visible from above in B. bigutticeps).
Etymology: The name of this new species is in honor of Dr. Patrick Grootaert, head of Department of Entomology, IRSNB.
Distribution: The Philippines (Palawan Island).
description: Published as part of Tian, Mingyi & Deuve, Thierry, 2013, Three new species of the genus Brachinus Weber, 1801 from the Philippines, with a modified key to species (Coleoptera: Carabidae: Brachininae), pp. 289-294 in Zootaxa 3737 (3) on pages 290-291, DOI: 10.11646/zootaxa.3737.3.7, http://zenodo.org/record/215916