Phorocardius zhiweii Ruan, Douglas & Qiu, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.993.53805 |
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publication LSID |
lsid:zoobank.org:pub:C40989DB-8063-4C9F-A481-E7AA82CA924B |
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persistent identifier |
https://treatment.plazi.org/id/6DFDF68D-2147-4055-8034-243A6FEBEA72 |
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taxon LSID |
lsid:zoobank.org:act:6DFDF68D-2147-4055-8034-243A6FEBEA72 |
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treatment provided by |
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scientific name |
Phorocardius zhiweii Ruan, Douglas & Qiu |
| status |
sp. nov. |
11. Phorocardius zhiweii Ruan, Douglas & Qiu sp. nov. Figs 21 View Figure 21 , 22 View Figure 22 , 23J View Figure 23 , 24J View Figure 24 , 25I View Figure 25
Type locality.
Yunnan: Long-chuan county, Hu-sa township, Gun-bang-jian-shan [i.e., Bang-gun-jian-shan邦棍尖山].
Etymology.
This species is named after its collector, Mr Zhiwei Dong, who generously provided specimens for this study.
Distribution.
China (Yunnan).
Differential diagnosis.
Body length greater than 7.0 mm; pronotum with integument red, elytra metallic green. Prothorax: procoxal cavities open; prosternal process not strongly narrowed posterad to ventral apex in ventral view, with ventral apex rounded. Pterothorax: scutellar shield with posterior edge pointed. Tarsal claw with ventral apex not smaller than dorsal apex. Male genitalia: paramere without preapical lateral expansion, but with apical mesal callus. Female unknown.
This species is distinct among Phorocardius in its entirely metallic green elytra and red pronotum. It is the second species having metallic color on elytra, as the type species of the genus (i.e., P. florentini (Fleutiaux, 1895)) also has slight blue metallic luster on elytra.
Phorocardius zhiweii Ruan, Douglas & Qiu, sp. nov. resembles P. manuleatus most in body shape and color of leg and prothorax. They can be easily separated by elytral color and aedeagus shape. In P. zhiweii Ruan, Douglas & Qiu, sp. nov., elytra are metallic green with slight purple luster; in ventral view, the aedeagus has apical fourth slightly narrowed, robust in both ventral and lateral views; and the paramere has preapical lateral expansion absent, apical mesal callus present; while in P. manuleatus , elytra are black to yellow, without metallic color; and the aedeagus in ventral view has the apical fourth greatly narrowed. The aedeagus is slender in both ventral and lateral views with parameres lacking acute preapical lateral expansions or apical mesal calli.
Description.
(based on holotype) Dorsum shiny. Head black, with mouthparts red-brown to brown. Antennae brown. Pronotum orange, with posterior edge dark brown (Fig. 22A View Figure 22 ). Scutellar shield black. Elytra entirely metallic green, with purple luster. Hypomera orange; rest of ventral surface black (Fig. 21B View Figure 21 ). Epipleura metallic purple. Legs black on coxa, pale brown on femur and basal half of tibia, dark brown from mid-length of tibia to apex. Body with short, yellow-grey pubescence, brown setae also present on disc of pronotum.
Measurements.
(based on holotype) Body length 8.0 mm, width 2.8 mm. Body length to width ratio 2.9. Pronotal width to length ratio 1.1. Pronotal width to body width ratio 0.80. Elytral length to pronotal length ratio 2.5; elytron length to width ratio 3.8.
Head. Frons and vertex with interspaces between punctures 1-3 × average puncture diameter (Fig. 22C View Figure 22 ). Frontal carina in frontal view convex. Antenna with apex extending to basal edge of elytron. Distance between eyes to width of eye ratio 2.7. Antenna length to body length ratio 0.42. Proportions of antennomere lengths (male): 100 (scape); 71; 76; 100; 100; 105; 103; 90; 90; 88; 116.
Prothorax. Pronotum in dorsal view (Fig. 22A View Figure 22 ): sides slightly convex from anterior edge to concavity near posterior fourth, widest near posterior third; posterior angles with lateral sides almost straight, not bulged; surface with interspaces between punctures 2-2.5 × 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 near posterior end, apex broadly rounded. In lateral view, prosternal process with ventral surface curved slightly dorsad, posterior end concave (Fig. 24J View Figure 24 ). Procoxal cavities open.
Pterothorax (Figs 24J View Figure 24 , 25I View Figure 25 ). Mesepisternum in ventral view with antero-mesal corner right-angled (Fig. 25I View Figure 25 , upper, green arrow). Projections on posterior edge of mesosternum: in ventral view present (Fig. 25I View Figure 25 , red arrow); in lateral view present, strongly developed, produced anteriorly (Fig. 24J View Figure 24 , red arrow). Scutellar shield: width to length ratio 1.0; anterolateral edges slightly sinuate; posterior apex pointed. Elytra: upper edge of epipleura with minute serrations.
Legs. Length ratio of metatarsomeres I-V (excluding claws): 100; 71; 53; 50; 120. Claw with ventral apex almost as large as dorsal apex.
Abdomen. Lateral edges of visible abdominal ventrites I-V with minute serrations.
Male genitalia. Robust in ventral and lateral views. Median lobe in ventral view with sides nearly parallel, slightly narrowed near apex; apex broadly rounded (Fig. 21D View Figure 21 ). Median lobe in lateral view gently bent ventrad, apex dilated and broadly rounded (Fig. 21F View Figure 21 ). Paramere in ventral view: wide, widest near mid-length, sides convex to near apex; preapical ventral expansion absent, mesal side of apex with ovoid disc-shaped callus (Fig. 21D View Figure 21 , indicated by blue arrow); paramere 2-3 × wider than median lobe (measured at mid-length of paramere and median lobe respectively). Paramere in lateral view: robust, almost straight at basal half, bent ventrad at apical half; preapical ventral expansion hook-like, with acute tip facing ventrad (Fig. 21F View Figure 21 , indicated by blue arrow).
Female. Unknown.
Type material.
Holotype. male (IZCAS, ex. LQCC), labels: 1) Yunnan, Long-chuan county, Hu-sa township (户撒), Mang-dong road, Gun-bang-jian-shan Mt., leg. Zhiwei Dong, 2018-VI-5 [label in Chinese]; 2) Holotype, Phorocardius zhiweii sp. nov., Des. Ruan et al., 2019.
Remarks.
This species inhabits middle elevations (around 1500 m) in Yunnan Prov., south China. This area is rainy, subtropical to tropical, with subtropical evergreen broad-leaf forest or tropical rain forest. This species is known only from the Oriental Region.
There are two undetermined female specimens (SZPT) from Xi-shuang-ban-na (西双版纳), Yunnan that have metallic blue elytra and a black pronotum. One male specimen (SZPT) from Ying-jiang (盈江), Yunnan also has metallic blue elytra and a black pronotum. Its aedeagus is extremely close to that of Phorocardius zhiweii Ruan, Douglas & Qiu, sp. nov. However, it is still not entirely clear whether these are conspecific. More specimens should be studied before a reliable determination can be made.
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