Pyrrhalta alishanensis, Lee & Bezděk, 2021
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publication ID |
https://dx.doi.org/10.3897/zookeys.1039.64740 |
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publication LSID |
lsid:zoobank.org:pub:3487C357-0FAC-4907-A5C0-C0A0C801C6E3 |
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persistent identifier |
https://treatment.plazi.org/id/F257BF90-025E-4CC9-8B1B-836B74EDE26C |
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taxon LSID |
lsid:zoobank.org:act:F257BF90-025E-4CC9-8B1B-836B74EDE26C |
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treatment provided by |
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scientific name |
Pyrrhalta alishanensis |
| status |
sp. nov. |
Pyrrhalta alishanensis sp. nov. Figs 15A-C View Figure 15 , 16 View Figure 16 , 17A, B View Figure 17
Types.
Holotype ♂ (TARI), Taiwan. Chiayi: Alishan (阿里山), 22.IV.2009, leg. M.-H. Tsou. Paratypes. 7♂, 11♀ (TARI), same data as holotype.
Diagnosis.
Medium-sized species, 7.3-8.7 mm. Body black. Elytra with fine dense punctures.
Description.
Length 7.7-8.7 mm, width 3.8-4.6 mm. Body black (Fig. 15A-C View Figure 15 ); mouth parts black; abdominal ventrites yellow in males, ventrites II and III darker in females. Eyes small, interocular space 2.12-2.44 × diameter of eye. Antennae filiform in males (Fig. 16A View Figure 16 ), antennomeres V-VII broadest, length ratios of antennomeres I-XI 1.0: 0.6: 0.6: 0.8: 0.8: 0.8: 0.8: 0.7: 0.7: 0.7: 0.9, length to width ratios of antennomeres I-XI 2.5: 2.1: 1.9: 2.6: 2.4: 2.3: 2.3: 2.3: 2.5: 2.5: 3.5; similar in females (Fig. 16B View Figure 16 ), length ratios of antennomeres I-XI 1.0: 0.7: 0.6: 0.8: 0.8: 0.7: 0.8: 0.7: 0.7: 0.7: 0.8, length to width ratios of antennomeres I-XI 2.9: 2.4: 2.0: 2.5: 2.5: 2.1: 2.2: 2.1: 2.3: 2.2: 2.8. Pronotum and elytra convex. Pronotum 2.5-2.7 × wider than long, disc smooth and sparse short pubescence; and with extremely dense, coarse punctures laterally, reduced medially; with median longitudinal and lateral depressions; lateral margins moderately rounded, widest at middle, apical and basal margins slightly concave; anterior and posterior setiferous punctures slightly erect. Elytra broad, parallel-sided, 1.5-1.6 × longer than wide; disc smooth, with dense, coarse punctures, and short pubescence. Apical spur of tibia of middle leg absent and tarsomere I not modified in males. Aedeagus (Fig. 16C, D View Figure 16 ) broad in dorsal view, 4.6 × longer than wide, broadest at basal 2/5, slightly asymmetric, apically narrowed, apex acute; ostium obliquely longitudinal, not covered by a membrane; strongly curved near base in lateral view, apex narrowly rounded; primary endophallic sclerites elongate, 0.4 × as long as aedeagus, with several apical teeth, two secondary sclerites small and wide, 0.3 × as long as primary sclerite, with teeth along apical margins. Only apices of gonocoxae (Fig. 16I View Figure 16 ) sclerotized, longitudinal, with dense, long setae along lateral and apical margins. Ventrite VIII (Fig. 16E View Figure 16 ) well sclerotized, lateral margin slightly curved, with dense, long setae covering apex, spiculum long. Receptacle of spermatheca (Fig. 16F View Figure 16 ) slightly swollen; pump extremely long and strongly curved; sclerotized proximal spermathecal duct wide and short. Apical margin of abdominal ventrite V with one pair of rounded ridges at middle, slightly concave between ridges in males; truncate in females.
Remarks.
Adults of P. alishanensis sp. nov. are easily separated from other members of the species group by their black bodies (Fig. 15A-C View Figure 15 ) (yellow body in P. meifena Kimoto (Fig. 15D-F View Figure 15 ), brown body in P. igai Kimoto (Fig. 18 A-C View Figure 18 ) and P. meihuai sp. nov. (Fig. 18 D-F View Figure 18 )). The lanceolate aedeagus is similar to those of P. meifena and P. meihuai sp. nov., but differs in possessing two secondary endophallic sclerites with toothed apical margins (Fig. 16C, D View Figure 16 ) (no secondary endophallic sclerites in P. meifena (Fig. 20C, D View Figure 20 ), one secondary endophallis sclerite with smooth apical margin in P. meihuai sp. nov. (Fig. 22C, D View Figure 22 )). The elongate pump of the spermatheca is also diagnostic.
Host plant.
Larvae and adults feed on leaves of Acer rubescens Hayata ( Sapindaceae ) (Fig. 17A, B View Figure 17 ).
Biology.
The first author and Mr Mei-Hua Tsou found more than 20 mature larvae (Fig. 17A View Figure 17 ) on leaves of Acer rubescens Hayata in May 10, 2011, and reared them in the laboratory. Five pupae and one newly eclosed adult were observed June 25 (Fig. 17B View Figure 17 ).
Distribution.
Only known from the type locality.
Etymology.
Dedicated to the type locality, Alishan.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.