Calleida puncticollis

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) : 13

2. Calleida puncticollis species group

Diagnostic characters: With the character states of Calleida (in the widest sense, see above), restricted or amplified as follows: small-sized species (L 6.8–8.2 mm). Head and pronotum brownish, elytra metallic green to cupreous, without reddish patch. Apical labial palpomeres markedly securiform in both male and female. Pronotal disc heavily punctate ( fig. 24 ). Abdominal sternum VII not notched at apex both in males and females ( figs. 3, 6 ), with eight setae in males, ten or more setae in females. Median lobe of aedeagus stout, endophallus without any chitinized copulatory pieces ( fig. 27 ).

Taxonomic note: Only one species, C. puncticollis sp. n., is attributed to this group. This species is very rare in collections but recorded from several provinces in central and eastern China ( map 2 ). The systematic position of this species group is rather isolated in the Asiatic fauna because of the peculiar characters of endophallus.

The following peculiar characters isolate this group from all other known Asiatic Calleida species known so far: abdominal sternum VII in male not notched, and endophallus without copulatory pieces. In all other Asiatic Calleida , the male anal sternum is distinctly notched, and the endophallus has distinct chitinized copulatory pieces, composed of long flagellum or two short pieces. This is also the only Asiatic species with abdominal sternum VII with more than two apical setae in males (more than four in females) not included in the Calleida discoidalis species group (see Key to the species groups), which will be treated in a separate contribution. However, the different external and male sexual characters mentioned above suggested that these two groups may not closely related at all.

Figures

MAP 2 Distributions for species in the C. puncticollis group: C. puncticollis sp. n. (red).

FIGURES 22–29. Calleida puncticollis sp. n. 22 habitus and labels of holotype (male, Hubei, IZAS), scale bar = 2.0 mm; 23 habitus of paratype (female, Shaanxi, IZAS), scale bar = 2.0 mm; 24 pronotum (Shaanxi, China), [coarsely punctate], scale bar = 0.5 mm; 25 ovipositor (Hubei, China), scale bar = 0.1 mm; 26 female reproductive tract (Hubei, China), scale bar = 0.5 mm; 27 median lobe of aedeagus, right-lateral, ventral, left-lateral, and dorsal views (holotype), scale bar = 0.5 mm; 28 left and right parameres of aedeagus (holotype), scale bar = 0.2 mm; 29 male sternum IX (holotype), scale bar = 0.5 mm.

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].