Cheilomenes sexmaculata ( Fabricius, 1781 )
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publication ID |
https://doi.org/10.11646/zootaxa.5646.2.3 |
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publication LSID |
lsid:zoobank.org:pub:F52AD2D2-89B0-416D-B94E-B2DA665956E1 |
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persistent identifier |
https://treatment.plazi.org/id/344E87BF-602E-2741-FF1E-E6C6FA00A0C3 |
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treatment provided by |
Plazi |
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scientific name |
Cheilomenes sexmaculata ( Fabricius, 1781 ) |
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Cheilomenes sexmaculata ( Fabricius, 1781)
( Figs 1A–C View FIGURE 1 , 2–3 View FIGURE 2 View FIGURE 3 )
Larval descriptions or illustrations of Cheilomenes sexmaculata : Ślipiński 2007: 170, Yu 2010: 48, Poorani 2023: 72. Fourth instar larva ( Figs 2A–B, 2E View FIGURE 2 , 3 View FIGURE 3 ). Length 6.7–7.3 mm; width at metathorax 2.3–2.4 mm. Body elongate, cylindrical and tapered, with black senti and yellow spots ( Figs 2A–B View FIGURE 2 ). Head: black, nearly round. Epicranial stem absent; frontal arms inverted omega-shaped ( Fig. 3A View FIGURE 3 ), do not reach antennae; they appear to be separated at bases. Three hemispherical stemmata dark, arranged in a triangle, near at the base of antenna. Antenna with 3 antennomeres; antennomere 1 wider than and as short as antennomere 2; antennomere 3 with preapical setae and sensilla ( Fig. 3B View FIGURE 3 ). Labrum with setae ( Fig. 3C View FIGURE 3 ). Mandible well-sclerotized with two apical teeth ( Fig. 3D View FIGURE 3 ). Maxilla with mala brush-shaped, with two long setae and a pair of papillae at the apex in ventral side ( Fig. 3F View FIGURE 3 ). Maxillary palp with two setae in palpomere 2, and apex with sensilla ( Fig. 3H View FIGURE 3 ). Labium with spare and thin setae, labial palpi with two palpomeres, bearing setae and small stout sensilla at apex ( Figs 3G, 3I View FIGURE 3 ).
Thorax. Pronotum black, with two semi-oval dorsal plates, separated by a narrow band and embrace yellow stripes in lateral margins ( Figs 2A–B View FIGURE 2 ). Each lateral and posterior margins of plates with a black sentus; nearly 28 setae in external margin; central margin of plates without sentus, only with short setae ( Figs 2A–B View FIGURE 2 ). Mesonotum and metanotum plates black, with yellow spots in central surface ( Figs 2A–B View FIGURE 2 ). Lateral margins of plates with black sentus, and a yellow sentus in central surface of plates ( Figs 2A–B View FIGURE 2 ). Lateral margins of mesonotum each with a yellow parascolus bearing 1 to 3 branches, without seta ( Figs 2A–B View FIGURE 2 ). A pair of circular spiracles with lamellae at the opening in anterolateral part of mesonotum ( Fig. 2B View FIGURE 2 ). Metanotum laterally each with a yellow parascolus bearing 1 to 3 branches, and three short setae ( Figs 2A–B View FIGURE 2 ). Legs black, long, with setae; ventral part with a bristle brush near the tarsal claw, and row of external setae in the tibia; tarsal claw with a subquadrate basal tooth and dense setae around the tooth ( Fig. 3E View FIGURE 3 ).
Abdomen with nine segments ( Fig. 2E View FIGURE 2 ). Segment S1 to S8 with a pair of anterolateral spiracles similar to those of the mesothorax ( Fig. 2E View FIGURE 2 ). Segment S1 dark brown to black, and tan semi-circular spots in the basal dorsal projections, dorsolateral and lateral parts yellow, with three pairs of yellow senti in dorsal, dorsolateral and lateral parts ( Figs 2A–B, 2E View FIGURE 2 ). Segment S2 and S3 dark brown, brown in central surface, lateral parts yellow, with two pairs of black senti in dorsal and dorsolateral plates, and a pair of yellow senti in lateral areas ( Figs 2A–B, 2E View FIGURE 2 ). The color and the location of projection of S4 are similar to those of S1 ( Figs 2A–B, 2E View FIGURE 2 ). Segment S5 and S6 dark brown, yellow in central surface and lateral parts, with two pairs of black senti in dorsal and dorsolateral plates, and a pair of yellow parascoli in lateral areas ( Figs 2A–B, 2E View FIGURE 2 ). Segment S7 and S8 dark brown, yellow in central surface and between dorsal and dorsolateral plates, lateral parts yellow, with a pair of black senti in dorsal plates, a pair of black parascoli in dorsolateral plates, and a pair of yellow strumae in lateral areas. Segment S9 dark brown with nearly 20 setae ( Figs 2A–B, 2E View FIGURE 2 ).
Pupa ( Figs 2C–D View FIGURE 2 ). Length 3.9–4.0 mm; width 2.0– 2.9 mm. Body oval, convex, with extremely short setae. Thorax: pronotum yellow, posterior regions black; mesonotum pink, black border in lateral regions with black stripes connected with meso- and metanotum on each side; metanotum pink, with two large and two small black spots. Abdomen: seven visible segments. S1 pink. Segment S2–S6 pink, with a pair of round and black spots on each side.
Notes. Ślipiński (2007) provided concise description of the larval stage of this species under the name Menochilus sexpunctatus . Subsequently, Yu (2010) presented illustrations of immature stages for this species. Poorani (2023) contributed comprehensive illustrations of this species accompanied by brief descriptions of its immature stages.
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.