Coptodera (Coptoderina) maculata Dupuis

Hunting, Wesley & Yang, Man-Miao, 2019, A taxonomic review of the pericaline ground-beetles in Taiwan, with descriptions of new species (Coleoptera, Carabidae, Lebiini), ZooKeys 816, pp. 1-164 : 65-66

Coptodera (Coptoderina) maculata Dupuis Figs 44, 45 A–C, 46A, 57D, 59

Coptodera formosana var. maculata Dupuis, 1912: 329.

Coptodera maculata Dupuis: Nakane and Ohkura 1956: 48; Jedlička 1963: 342.

Types and other material examined.

Holotype (female) labeled: "Hoozan/Formosa/H. Sauter II 10"; “TYPUS” [rectangular, red paper]; "DUPUIS DET."; " Coptodera / formosana D/ maculata D". One paratype and six other specimens of C. maculata : five males and one female. For further details see EH Strickland Virtual Entomology Museum Database.

Type locality.

Taiwan (Formosa: Hoozan).

Diagnosis.

Specimens of this species are easily distinguished from other Taiwanese Coptodera by a combination of elytra with one seta in apical 1/4 of stria 3, one seta in apical 1/3 of stria 2, light lateral margins, and an apical macula that extends to suture.

Description.

OBL 6.08 - 6.66 mm. Length (n = five males, one female): head 0.78 - 0.92, pronotum 1.04 - 1.20, elytra 4.33 - 5.00, metepisternum 0.96 - 1.20 mm; width: head 1.52 - 1.72, pronotum 1.76 - 2.08, elytra 3.16 - 3.66, metepisternum 0.60 - 0.68 mm.

Body proportions. HW/HL 1.86 - 2.00; PWM/PL 1.57 - 1.79; EL/EW 1.32 - 1.40; ML/MW 1.56 - 1.76.

Color. Fig. 44. Dorsum of head brunneous to rufo-piceous, clypeus, antennae, and palpi brunneous to rufo-brunneous; disc of pronotum brunneous to rufo-piceous, lateral margins testaceous to rufo-brunneous, contrastingly lighter then disc; elytral disc, with four testaceous maculae, two anterior and two posterior, anterior macula large, from interval 3 to 7, closest to base of elytra in interval 5, closest to apex of elytra in interval 4, posterior macula, from suture to interval 8, closest to base of elytra in intervals 4 and 5, closest to apex of elytra in interval 3; margins of elytra testaceous to rufo-brunneous; ventral surface with thoracic and abdominal tergites rufo-testaceous to rufo-piceous, proepipleuron and elytral epipleuron contrastingly lighter, brunneo-testaceous to rufo-brunneous; legs with trochanter and femora and tarsi brunneo-testaceous to rufo-brunneous, tibia rufo-brunneous to piceous on dorsal surface.

Microsculpture. Dorsum of head with sculpticells granulate and isodiametric, easily visible at 50 × magnification; pronotum somewhat granulate, transverse mesh pattern easily visible at 50 ×; elytral intervals with transverse sculpticells, center of striae with isodiametric sculpticells, one to two cells wide; ventral surface of head, smooth with microsculpture not visible at 50 ×; prosternum, proepipleuron, mesepisternum and metepisternum with sculpticells forming a shallow, somewhat transverse to transverse mesh.

Macrosculpture. Dorsum of head and clypeus faintly rugulose to smooth, with relatively dense, fine and scattered setigerous punctures, setae hardly visible at 50 ×; pronotum with fine and scattered setigerous punctures, visible in side view at 50 ×, disc shallowly regulose; elytra with intervals broadly rounded, single row of fine setigerous punctures in the center of each interval, these punctures larger than additional scattered setigerous puncture throughout disc, striae with single row of fine setigerous punctures hardly visible in lateral view at 50 ×; ventrally, thoracic and abdominal sclerites with scattered setigerous punctures throughout.

Fixed setae. Elytra with two setae in apical 1/3 of stria 2, one seta near base in stria 3.

Luster. Dorsal and ventral surfaces moderately glossy.

Head. Mandibles somewhat curved at apex, somewhat long and narrow in form, when measured on outside diameter, visible portion shorter than length of labrum; labrum slightly wider than clypeus at max width, broadly bilobed.

Pronotum. Anterior transverse impression deep; posterior transverse impression deep, median longitudinal impression moderately deep; lateral margins explanate, apico-lateral margins broadly rounded, posterio-lateral margins obtuse.

Elytra. Apex slightly sinuate.

Legs. Two rows of small squamo-setae on tarsomeres 1-2 of mid-leg; males with two notches apically on ventral side of mid-tibia.

Male genitalia. Figs 45 A–C, 46A. Length 1.08 - 1.44 mm. Ostium catopic. Phallus cylindrical, right side straight along length, left side curving slightly from mid- length to apex when viewed ventrally, distinctively wide medially in lateral view, apical area very short and bluntly rounded apex, slightly curved upwards in lateral view; endophallus, relatively short and stout, one large and distinctive microtrichial field, microtrichia longer and more dense on right side, sclerotized ring of distinctively large spines (esr) at narrowest portion of apical constriction.

Female genitalia. Fig. 57D. Width 0.96 mm. One spermatheca (sp1), cylindrical, ribbed laterally along length; spermathecal accessory gland not observed; spermathecal gland (sgd) duct broken before apex but distinctively swollen along length, attachment site near apex of large diverticulum (div) of spermatheca; bursa copulatrix (bc) with distinctive sac at apical end (bs), large and somewhat cylindrical, coming to a point at the apex.

Habitat, habits, and seasonal occurrence.

The known elevational range of C. maculata is from 100 to 950 meters. Adults of this species are found in mixed forest of montane areas. Little is known of the habits of this species. Specimens have been collected from January to September with the most being collected in June. Methods of collecting include u.v. light sheet, light trap, and hand collecting.

Geographical distribution.

Coptodera maculata is known only from Taiwan. See Figure 59.