The genus Japonitata Strand (Insecta, Coleoptera, Chrysomelidae, Galerucinae) in Taiwan: a redefinition of the genus and descriptions of two new species Author Lee, Chi-Feng https://orcid.org/0000-0003-1996-0557 Applied Zoology Division, Taiwan Agricultural Research Institute, Taichung 413, Taiwan chifeng@tari.gov.tw text ZooKeys 2022 2022-10-26 1125 171 192 http://dx.doi.org/10.3897/zookeys.1125.93703 journal article http://dx.doi.org/10.3897/zookeys.1125.93703 1313-2970-1125-171 1828511FA4924A3C83CBE1956E4807B4 5382919A7AE55EB69980E56E77572980 Japonitata houjayi sp. nov. Figs 1A-C , 2 , 3 Types. Holotype ♂ (TARI). Taipei, Shihtzutoukeng (獅子頭坑), 300 m, 1.V.2010, leg. H.-J. Chen. Paratypes : 1♂, 5♀ (TARI), same data as holotype; 4♂, 1♀ (TARI), same but with "4.V.2010" ; 4♂, 3♀ (TARI), same but with "8.V.2010" ; 1♂, 1♀ (TARI), same but with "26.V.2010" ; 3♂, 4♀ (TARI), same but with "28.V.2010" ; 3♂ (TARI), same but with "leg. H. Lee"; 1♂ (TARI), same locality, 25.IV.2012, leg. H.-J. Chen. Description. Length 5.5-6.6 mm, width 2.7-3.4 mm. General color (Fig. 1A-C ) reddish brown; antennae black; legs dark brown. Antennomeres II-XI filiform but stout in males (Fig. 2A ), ratios of lengths of antennomeres I-XI 1.0: 0.4: 0.7: 0.9: 0.8: 0.8: 0.8: 0.8: 0.7: 0.7: 0.8; ratios of length to width from antennomeres I-XI 2.5: 1.5: 1.9: 2.7: 2.5: 2.5: 2.5: 2.5: 2.4: 2.4: 3.5; stout antennae in males similar in females (Fig. 2B ), ratios of lengths of antennomeres I-XI 1.0: 0.4: 0.6: 0.8: 0.8: 0.7: 0.8: 0.7: 0.7: 0.6: 0.8; ratios of length to width from antennomeres I-XI 2.5: 1.5: 2.0: 2.5: 2.4: 2.3: 2.5: 2.4: 2.6: 2.3: 2.9. Pronotum 1.6-1.7 x wider than long; disc with scarce, fine punctures at sides, reduced medially, with transverse groove near base, medially abbreviated, laterally connected with short longitudinal groove on basal margin; lateral margins slightly rounded, widest behind apices; apical margin slightly concave and basal margin slightly convex. Elytra 1.5 x longer than wide; disc with confused, dense, reduced punctures; with one small tubercle behind scutellum; with one distinct longitudinal ridge from humeral calli, parallel with lateral margin, abbreviated subapically; with one additional ridge also from humeral calli, distinct, directed medially; lateral margins moderately rounded, widest at apical third, apices convergent. Aedeagus (Fig. 2C, D ) extremely slender, 7.5 x longer than wide; parallel-sided, slightly narrowed at apical 1/4, strongly narrowed subapically, apex narrowly rounded; moderately curved at basal 1/3 in lateral view; tectum slender, longitudinal, apex recurved; no endophallic sclerites. Apical margin of abdominal ventrite V in males with distinct, narrow median lobe (Fig. 2G ), apical margin slightly recurved, with short median internal ridge at middle of basal margin, from basal fourth to base; basal margin normal. Gonocoxae (Fig. 2F ) longitudinal and connected basally, with narrow furrow between gonocoxae; each gonocoxa narrowed subapically, apex narrowly rounded, with eight long apical setae; base strongly sclerotized and narrow. Ventrite VIII (Fig. 2E ) in females with apex weakly sclerotized, small, apical margin irregular; with dense short apical setae; spiculum extremely elongate. Spermathecal receptaculum (Fig. 2H ) swollen, not delimited from pump; pump long and curved, with apical process curved; sclerotized spermathecal duct extremely short, not separated from receptaculum. Figure 1. Habitus of Japonitata houjayi sp. nov. and J. jungchani sp. nov. A J. houjayi sp. nov., male, dorsal view B ditto, ventral view C ditto, lateral view D J. jungchani sp. nov., male, dorsal view E ditto, ventral view F ditto, lateral view. Figure 2. Diagnostic characters of Japonitata houjayi sp. nov. A antenna, male B antenna, female C aedeagus, dorsal view D ditto, lateral view E abdominal ventrite VIII F gonocoxae G abdominal ventrite IV-V, male H spermatheca. Diagnosis. Adults of J. houjayi sp. nov. are similar to those of J. ruficollis Jiang, 1989 from China (Xizang) with reddish brown bodies, but differ in possessing black antennae and dark brown legs (yellow antenna with one or two apical antennomeres black, and reddish brown legs in J. ruficollis ). Host plant. Scutellaria indica L. ( Lamiaceae ). Biology. Scutellaria indica is a small herbaceous plant (Fig. 3A ) growing on slopes along roads (Fig. 3B ). Adults appear only during May, usually resting on the undersides of leaves during daytime (Fig. 3C, D ). Adults feed on the leaves (Fig. 3E ) and were observed mating (Fig. 3F ) occasionally. Figure 3. Field photographs of Japonitata houjayi sp. nov. A host plant, Scutellaria indica B population of Scutellaria indica growing on the slope along a road C adult resting on underside of leaf D close-up of adult E adult feeding on leaf F adults mating on a leaf. Etymology. The new species name is dedicated to Mr. Hou-Jay Chen (陳厚潔), the first team member to find the habitat and collect type specimens. Distribution. This new species is known only from the type locality.