Sulciclivina sagittaria singaporensis, Balkenohl, 2023

Balkenohl, Michael, 2023, Revision of the genus Sulciclivina Balkenohl, 2022 from Asia (Coleoptera, Carabidae, Clivinini), European Journal of Taxonomy 915 (1), pp. 1-57 : 45-46

Sulciclivina sagittaria singaporensis subsp. nov.

urn:lsid:zoobank.org:act:2487CFA0-1157-4E1E-A406-B87C40F9D386

Figs 21 , 51, 53

Diagnosis

The subspecies differs from the nominotypical subspecies mainly by the distinctly sculptured frons of the head, and by the shape of the elytron, which is more elongate and parallel.

Etymology

The name refers to the city of Singapore where most of the specimens were found.

Type material

Holotype

SINGAPORE • ♀; with white labels and data: handwritten on the original mounting card with red ink “Spore” [Singapore] / printed in black “ SINGAPORE: C.J. Saunders. B.M.1929-369” / handwritten in black ink “987 A” / handwritten in black ink and printed “ Clivina sagittaria Bates H.E.Andrewes det.”; NHMUK.

Paratypes

SINGAPORE • 1 ♀, 2 specs; same data as for holotype but with number “377” and “897 A”, and one of them with barcode “ NHMUK015024561 ”; NHMUK • 1 ♀; “ MALAY PENIN: Selangor, F.M.S. Kuala Lumpur at light april 6th 1927 H.M. Pendlebury”, reverse side “EX COLL: F.M.S. MUSEUM” / “H.E.Andrewes Coll. B.M.1945-97.”; NHMUK • 1 ♀; same data as for preceding but “ April 20 th 1927 ”; NHMUK • 1 ♀; “ Singapore on Lizz bags” [sic] “1927 9 Ljiu” / “ H.E.Andrewes Coll. B.M.1945-97.”; NHMUK • 1 ♀; “Singapore 1921-23” / “ SINGAPORE: C.J. Saunders. B.M.1929-369.”; NHMUK • 1 ♀; same data as for preceding but with additional label: “B: 5/22 flur” [sic]; NHMUK • 1 ♀; “ Singapore Saunders” / “sagittaria ” / “From British Museum Collection” / “COLLECTIO KAREL KULT COLL. A.DOSTAL, 1999”; CADW .

Description

MEASUREMENTS. Holotype: body length 4.63 mm, width 1.23 mm; L/W of pronotum 1.04; L/W of elytra 2.06. All material: body length 4.63–5.1 mm (ẍ: = 4.88 mm *), width 1.23–1.34 mm (ẍ: = 1.26 mm *), L/W of pronotum 1.01–1.06 (ẍ: = 1.04*), L/W of elytra 2.05–2.11 (ẍ: = 2.09*); (*n = 8).

The subspecies differs from the nominotypical subspecies mainly in the following characters:

HEAD. The frons of the head is more rugose. This includes transverse rugae between the two arrow-like carinae. In addition, the head is much more punctured, mainly posteriorly. The antenna is moderately long, reaching just over the middle of the pronotum with antennomeres five to ten slightly longer than wide (L/W around 1.12).

PRONOTUM. Lateral margin of pronotum straighter than in the nominotypical subspecies, nearly concave in most of the specimens, crenulated. Disk with a paralateral and a paramedian group of cloud-like punctures, the paralateral cloud of punctures variable with its extension anteriorly. The proepisternum is slightly visible in dorsal view.

ELYTRON. The shape is more elongate and parallel. It is slightly more than twice as long as wide with maximum width at middle. The crenulation behind the humerus is more distinct.

HIND WINGS. In all of the eight female specimens, the alae are fully developed.

MALE GENITALIA. Unknown.

FEMALE GONOCOXITE (Fig. 51). The gonocoxites are angular at base.

Distribution

Known from the Malayan peninsula.

Figures

Figs 20–23. Sulciclivina Balkenohl, 2022, habitus, dorsal view. 20. S. sagittaria sagittaria (Bates, 1892), ♂, paralectotype (NHMUK). 21. S. sagittaria singaporensis subsp. nov., ♀, holotype (NHMUK). 22. S. oculiangusta sp. nov., ♀, holotype (NHMUK). 23. S. andrewesi sp. nov., ♂, holotype (NHMB).