Calleida borneensis

Casale, Achille & Shi, Hongliang, 2018, Revision of the Oriental species of Calleida Latreille (sensu lato). Part 1: Introduction, groups of species, and species of six species groups (Coleoptera: Carabidae: Lebiini), Zootaxa 4442 (1) : 30

6. Calleida borneensis species group

Diagnostic characters: With the character states of Calleida (in the widest sense, see above), restricted or amplified as follows: medium sized species (L: 8.4–9.9 mm). Pronotum and the ventral side dark brownish, with very faint metallic green reflection on pronotal disc, vertex with reddish patch; elytra metallic green, with golden reddish purple hue at sides and near apex. Elytral apex strongly curved, outer apical angles markedly widened, but not forming acute angles ( fig. 16 ). Abdominal sternum VII in male moderately notched at middle, with one seta on each side in males, two setae in females. Median lobe of aedeagus with apical lamina capitate and securiform ( fig. 64 ).

Taxonomic note: Only one species, C. borneensis sp. n. is attributable to this group. This rare species is known so far only from a few specimens from Borneo ( map 5 ).

C. borneensis sp. n. is similar to members of the C. terminata group (especially to C. corporaali ) in the general appearance, curved elytral truncation, and markedly widened elytral outer apical angles. But, compared with species of the C. terminata group, it is markedly different in several morphological characters, such as the outer apical angles of elytra widened but not acutely toothed, the abdominal sternum VII in males only moderately notched, and the median lobe of aedeagus without prominent ventral lobe and with apical lamina axe-shaped.

Therefore we isolate this new species in a separate group, related to the C. terminata or C. splendidula groups.

Figures

MAP 5 Distributions for species in the C. borneensis group: C. borneensis sp. n. (red).

FIGURES 1–18. Characters of Calleida spp. 1–3 sternum VII of males: 1 C. cf. splendidula (Guangdong, China), [apex notched, one seta on each side]; 2 C. fukiensis (Fujian, China), [apex notched, two setae on each side]; 3 C. puncticollis sp. n. (Holotype, Hubei, China), [apex straight, four setae on each side]. 4–6 sternum VII of females: 4 C. cf. splendidula (Guangdong, China), [two setae on each side]; 5 C. fukiensis (Shaanxi, China), [three setae on each side]; 6 C. puncticollis sp. n. (Hubei, China), [six and seven setae on each side]. 7–9 basal three antennomeres: 7 C. gressittiana sp. n. (Holotype), [with sparse additional setae]; 8 C. excelsa (Yunnan, China), [with dense additional setae]; 9 C. borneensis sp. n. (Sabah, Malaysia), [without additional setae]. 10 elytral shoulder, C. sultana (Yunnan, China), [humeral margins setose]. 11–14 pronotal anterior angle: 11 C. gressittiana sp. n. (Holotype), [with erect setae]; 12 C. excelsa (Yunnan, China), [with erect setae]; 13 C. sultana (Yunnan, China), [with erect setae]; 14 C. borneensis sp. n. (Sabah, Malaysia), [without setae]. 15–18 elytral outer apical angle: 15 C. corporaali (Sabah, Malaysia), [acute, forming sharp tooth]; 16 C. borneensis sp. n. (Sabah, Malaysia), [markedly widened, not forming tooth]; 17 C. doriae (Yunnan, China), [slightly widened]; 18 C. gressittiana sp. n. (Holotype), [completely round, not widened].

FIGURES 61–66. Calleida borneensis sp. n. 61 habitus and labels of holotype (male, Sabah, Malaysia, NHML), scale bar = 2.0 mm; 62 habitus of paratype (male, Sarawak, Malaysia, NHML), scale bar = 2.0 mm; 63 female reproductive tract (Sabah, Malaysia), scale bar = 0.5 mm; abbreviations: sp spermatheca, pd spermathecal pedicel, gd spermathecal gland duct, ga glandular area, at atrium, bpj spermathecal basal projection, apt pedicel apical protuberance; 64 median lobe of aedeagus, right-lateral, ventral, left-lateral, and dorsal views (holotype), scale bar = 0.5 mm; 65 left and right parameres of aedeagus (holotype), scale bar = 0.2 mm; 66 ovipositor (Sabah, Malaysia), scale bar = 0.2 mm.