Chinochya sublata (Gressitt & Kimoto, 1963) Lee, 2020

Lee, Chi-Feng, 2020, Revision of Taiwanese species of Atrachya Chevrolat, 1836 (Coleoptera, Chrysomelidae, Galerucinae): descriptions of three new genera, two new species, and designations of three new synonyms, ZooKeys 940, pp. 117-159 : 117

Chinochya sublata (Gressitt & Kimoto, 1963) comb. nov. Figures 15A-C , 16

Monolepta sublata Gressitt & Kimoto, 1963: 635.

Types.

Paratype: 1♀ (CAS): "Szechuan, China / NE. of Motauchi / Wanhsien, IX [p] 27 [h] 48 / 4200-4800 ft. [p, w] // Gresitt & / Djou Collrs. [p, w] // NO. 28 [p, w] // PARATYPE [P] ♀ / Monolepta / sublata [h] / Gressitt & Kimoto [p, y]".

Other material.

China. Fujian: 1♀ (KMNH), Chungan, Lower Kuatun, 16.X.1941, leg. T. C. Maa; 2♂♂ (TARI), Jiuxianshan (九仙山), 21.VI.2014, leg. Y.-T. Chung; 13♂♂ (TARI), same locality, 12-17.VI.2015, leg. Y.-T. Chung; Yunnan: 3♂♂, 1♀ (TARI), Heinitang (黑泥塘), 6-9.IX.2017, leg. Y.-T. Wang; 3♂♂, 1♀ (TARI), Houqiao (猴橋), 12.VII.2016, leg. Y.-T. Wang; 1♀ (TARI), same locality, 5.IX.2018, leg. C.-C. Chen; 2♂♂ (TARI), Yunfengshan (雲峰山), 11.VII.2016, leg. Y.-T. Wang.

Description.

Length 5.3-6.3 mm, width 3.1-3.7 mm. Head, prothorax, and abdomen yellowish brown; antennae black except two basal antennomeres yellowish brown; meso- and metathoracic ventrites black; front legs yellowish brown, but tibia and tarsi darkened; middle and hind legs black; elytra black with one transverse, broad white band at middle (Fig. 15A-C ). Antennae (Fig. 16A ) filiform in males, ratio of length of antennomeres I to XI 1.0: 0.4: 0.5: 1.1: 1.0: 0.9: 0.9: 0.8: 0.9: 0.7: 0.9; ratio of length to width from antennomere I to XI 3.8: 1.6: 2.0: 4.0: 3.6: 3.5: 3.3: 3.2: 4.0: 4.0: 4.3; similar in females, ratio of length of antennomeres I to XI (Fig. 16B ) 1.0: 0.4: 0.4: 0.8: 0.9: 0.8: 0.8: 0.8: 0.7: 0.7: 0.9; ratio of length to width from antennomere I to XI 3.5: 1.9: 2.1: 3.8: 3.9: 3.6: 3.4: 3.5: 3.4: 3.4: 4.2. Pronotum 1.67-1.69 times wider than long; lateral margins rounded and apically narrowed, basal margin slightly rounded but slightly depressed at middle, apical margin truncate; disc with dense, fine punctures, without lateral depressions. Elytra 1.37-1.42 times longer than wide; parallel-sided; disc moderately convex, with dense, fine punctures; apex truncate. Tarsomere I of front legs swollen in males (Fig. 16J ), but not modified in females (Fig. 16K ). Penis (Fig. 16C-E ) wide, ca. 4.5 times longer than wide; lateral margins parallel from base to apical 2/5, then basally narrowed, apex broadly rounded; with transverse and longitudinal, strongly sclerotized area near apex, intersecting at middle; tectum weakly sclerotized, elongate from apical 1/10 to basal 2/5, apex rounded; basally broadened in lateral view; ventral surface with broad groove from apex to middle. Endophallic spiculae complex: median endophallic spiculae composed of three pairs of different shapes, one pair elongate and with acute apices near middle, another pair hook-like between inner and outer pairs, the last pair bifurcate at middle; lateral endophallic spiculae composed of transverse row of hook-like, larger setae ventrally located, small setae dorsally located. Gonocoxae (Fig. 16G ) slender, tightly conjunct from apex to apical 2/5; each gonocoxa with ten setae from apical 1/5 to apex, some setae very small; subapically widened; apex oblique truncate. Ventrite VIII (Fig. 16F ) strongly sclerotized except apex, with a number of long setae at sides, short setae along apical margin, spiculum elongate. Spermathecal receptaculum (Fig. 16L ) strongly swollen, with one transverse, erect sclerite; pump slender and curved; sclerotized spermathecal duct extremely elongate, but base extremely wide, followed by short slender tube, then with inflated areas. Bursal sclerites paired and well developed, dorsal bursal sclerites larger (Fig. 16H ), with one longitudinal row of eight stout setae; ventral bursal sclerites smaller (Fig. 16I ), with one longitudinal row of seven or eight small denticles.

Diagnosis.

Chinochya sublata is similar to C. unifasciata . They cannot be separated based on their external morphology, however, C. sublata (Fig. 16C-E ) differs from C. unifasciata (Fig. 17C-E ) in genitalic characters as follow: median endophallic spiculae composed of three different pairs of sclerites (only two pairs of sclerites in C. unifasciata ); lateral endophallic spiculae transversely arranged (longitudinally arranged in C. unifasciata ); ventral bursa sclerite with seven or eight small denticles (13 or 14 small denticles in C. unifasciata ).

Remarks.

Males are here described for the first time. Types on which the original description was based are all females ( Gressitt and Kimoto 1963)

Distribution.

South China (Fujian, Sichuan, Yunnan).

Figures

Figure 15. Habitus of Chinochya sublata and C. unifasciata A C. sublata, male, dorsal view B same, ventral view C same, female, dorsal view D C. unifasciata, holotype, dorsal view E same, ventral view F C. unifasciata, holotype, labels.

Figure 16. Diagnostic characters of Chinochya sublata A antenna, male B antenna, female C aedeagus, dorsal view D aedeagus, lateral view E aedeagus, ventral view F abdominal ventrite VIII G gonocoxae H dorsal bursal sclerites I ventral bursal sclerites J protarsi, male K protari, female L spermatheca.

Figure 17. Diagnostic characters of Chinochya unifasciata A antenna, male B antenna, female C aedeagus, dorsal view D aedeagus, lateral view E aedeagus, ventral view F abdominal ventrite VIII G gonocoxae H dorsal bursal sclerites I ventral bursal sclerites J protarsi, male K protari, female L spermatheca.