Phorocardius florentini (Fleutiaux, 1895)

Ruan, Yongying, Douglas, Hume B., Qiu, Lu, Chen, Xiaoqin & Jiang, Shihong, 2020, Revision of Chinese Phorocardius species (Coleoptera, Elateridae, Cardiophorinae), ZooKeys 993, pp. 47-120 : 47

publication ID

https://dx.doi.org/10.3897/zookeys.993.53805

publication LSID

lsid:zoobank.org:pub:C40989DB-8063-4C9F-A481-E7AA82CA924B

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https://treatment.plazi.org/id/0C605CE9-F7EB-5C11-81B6-0B41959B80D7

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scientific name

Phorocardius florentini (Fleutiaux, 1895)
status

 

3. Phorocardius florentini (Fleutiaux, 1895) Figs 7 View Figure 7 , 23C View Figure 23 , 24C View Figure 24 , 25C View Figure 25 , 26C View Figure 26

Cardiophorus florentini Fleutiaux, 1895: 687. Type locality: "Tonkin: Lang-son", interpreted as Vietnam: Lạng Sơn Province.

Phorocardius florentini : Fleutiaux 1931: 311.

Distribution.

China (Guizhou, new record); Vietnam ( Fleutiaux 1895).

Differential diagnosis.

Body length greater than 7.0 mm; pronotum and hypomeron red, elytra black with metallic blue to purple luster. Prothorax: procoxal cavities open; prosternal process not strongly narrowed from anterior base posterad to ventral apex in ventral view, with apex convex. Pterothorax: scutellar shield elongate, with posterior apex pointed. Tarsal claw with ventral apex not smaller than dorsal apex. Male genitalia: paramere with preapical lateral expansion present, apical mesal callus absent. Female: apex of last abdominal ventrite (ventrite V) simple, not emarginate at apex.

This species is distinctive for its elytral color: black with metallic blue to purple luster.

Phorocardius florentini (Fleutiaux, 1895) resembles P. zhiweii Ruan, Douglas & Qiu, sp. nov. in its entirely red pronotum and metallic elytra. P. florentini (Fleutiaux, 1895) can be easily separated from P. zhiweii Ruan, Douglas & Qiu, sp. nov. by the following characters. In P. florentini (Fleutiaux, 1895): aedeagus strongly narrowed from mid-length to apex in lateral view; in dorsal view, paramere with preapical lateral expansion minute, acute to rounded, facing laterally, with apical mesal callus absent; scutellar shield elongate (width to length ratio: 0.81-0.86); and elytra black, with metallic blue to purple luster; while in P. zhiweii Ruan, Douglas & Qiu, sp. nov., the aedeagus is only slightly narrowed from mid-length to apex in lateral view; in dorsal view, paramere with preapical lateral expansion absent, apical mesal callus present, apex narrow and slightly bent laterad; scutellar shield not elongate (width to length ratio: 1.0); and elytra metallic green with slight purple luster.

Description.

(Based on holotype and three non-type specimens examined) Body black, red and metallic blue-purple (Fig. 7A-D View Figure 7 ). Pronotum and hypomera red. Elytra black, with metallic blue to purple luster. Head brown-black to black; antennae brown-black. Prosternum red, black or mixed with red and black; meso- and meta- sternum black; abdominal ventrites black; legs brown-black to black. Body with short, yellow pubescence; brown setae also present on disc of pronotum.

Measurements.

(based on type and non-type specimens) Male body length 9.0-11.5 mm, width 3.3-3.8 mm. Female body length 10.0-13.0 mm, width 3.7-4.0 mm. Body length to width ratio 2.6-2.8. Pronotal width to length ratio 1.1-1.2, Pronotal width to body width ratio 0.86-0.91. Elytral length to pronotal length ratio 2.3-2.5; elytron length to width ratio 3.7-3.9.

Head. Frons and vertex punctures with interspaces 0.5-1 × average puncture diameter; punctures sparser at centre of vertex, with interspaces 1.5-2 × average puncture diameter. Frontal carina in frontal view convex, not straight (Fig. 7I View Figure 7 ). Antenna with last antennomere not reaching beyond posterior angle of pronotum. Distance between eyes to width of eye ratio 3.8-3.9. Antenna length to body length ratio, in male 0.36-0.38; in female 0.37-0.39. Proportions of antennomere lengths (male): 100 (scape); 60-65; 75-83; 75-83; 75-83; 78-85; 81-86; 85-90; 85-90; 81-85; 90-100.

Prothorax. Pronotum in dorsal view: sides evenly convex from anterior edge to constriction near posterior end, widest near mid-length; posterior angles with lateral sides almost straight, not bulged; surface with interspaces between punctures 1-2 × average puncture diameter. In ventral view, ventral surface of prosternal process with sides carinate and slightly and gradually narrow from anterior to mid-length, parallel from mid-length to posterior end, with apex convex. In lateral view, prosternal process with ventral surface curved slightly dorsad, posterior end somewhat concave or not (Fig. 24C View Figure 24 , upper arrow). Procoxal cavities open.

Pterothorax (Figs 24C View Figure 24 , 25C View Figure 25 ). Mesepisternum in ventral view with antero-mesal corner angulate (Fig. 25C View Figure 25 , upper (green) arrow). Projections on posterior edge of mesosternum: in ventral view present (Fig. 25C View Figure 25 , red arrow); in lateral view present, acute, strongly produced anteriorly (Fig. 24C View Figure 24 ). Scutellar shield: elongate, width to length ratio 0.81-0.86; anterolateral edges slightly sinuate; posterior edge gradually narrowed and elongate, strongly protruding posterad, pointed at apex. Elytra: upper edge of epipleura with minute serrations.

Legs. Length ratio of metatarsomeres I-V (excluding claws): 100; 80-85; 70-75; 50-55; 135-140. Claw with ventral apex almost as large as dorsal apex.

Abdomen. Lateral edges of visible abdominal ventrites I-V with minute serrations.

Male genitalia (Fig. 7E-G View Figure 7 ). Robust from ventral and lateral views. Median lobe in ventral view slightly narrowed from base to basal third, parallel-sided from basal third to near apex, apex rounded and very slightly dilated. Median lobe in lateral view wide from base to mid-length, narrow from mid-length to apex; gently and evenly curved ventrad from base to mid-length, straight from mid-length to apex; apex rounded. Paramere in ventral view: wide and equal wide from base to apical third; abruptly narrowed from apical third to apex; preapical lateral expansion present, minute and rounded, facing laterally; apical mesal callus absent; paramere width 3-4 × median lobe width (measured at mid-length of paramere and median lobe respectively). Paramere in lateral view: robust, almost straight from base to mid-length, curved ventrad and narrowed from mid-length to apex; apex with hook-like preapical expansion with barb facing base.

Female. Body color like male (Fig. 7B View Figure 7 ). Apex of abdominal ventrite V convex (Fig. 7H View Figure 7 ). Proximal sclerites of bursa copulatrix wide with apex acute, base concave, and mesal edge flat (Fig. 7K View Figure 7 ); each with 8-10 large spines on mesal edge, 14-18 smaller spines on disc.

Type material.

Lectotype. ♀ (MNHN), labels: 1) Tonkin Florentin; 2) Type [red label]; 3) Museum Paris Coll. E. Fleutiaux; 4) Cardiophorus florentini Fleut. Type; 5) Fleut Ann. Soc. Ent. Fr., 1894. P. 687, Collection Fleutiaux; 6) C. florentini Fleut., type, Collection Fleutiaux; 7) Lectotype Cardiophorus florentini Fleutiaux desig. Douglas 2015.

Additional material.

2♂1♀ (SZPT, ex. LQCC), labels: 1) Guizhou, Li-bo, Mao-lan, Dong-duo, 2000 m, 2018.VI.11-17, leg. Jianyue Qiu & Hao Xu [in Chinese]; 2) Phorocardius florentini (Fleutiaux, 1894) Det. Ruan, 2019.

Remarks.

Based on examined material, this species inhabits low to middle elevations (0-2000 m) in south China and north Vietnam. Recent Chinese specimens were collected in daylight in a mountainous area with evergreen forest and subtropical climate. Known from the Oriental Region only.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Elateridae

Genus

Phorocardius