Lema trivittata trivittata

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Taxonavigation

Genus: Lema

Name

Lema trivittata Say, 1824 – Wikispecies link – Pensoft Profile

Material examined

Taiwan: 2 exs.: Taitung, Lanyu island, 5.V.2012, leg. S.-F. Yu (TARI); 16 exs.: Yunlin, Pichiao, 16.VI.2010, leg. H. Lee (TARI); 2 exs., same locality (= Tuku), 30.VI.2010, leg. H. Lee (TARI); 2 exs., same locality, 9.VII.2010, leg. H. Lee (TARI).

Remarks

This species is also an introduced one for Taiwan because its original distribution is limited to the United States and Canada (White 1993). Recently Aoyagi (2012) and Kawaji (2012) reported occurrence of Lema trivittata from Miyako and Iriomote islands of Japan. Although they did not mention the subspecies name, from the pictures in the papers we considered that they are same subspecies. Considering the geographic placement of the two islands and Taiwan, the origin of invasion could be once and rapidly spread.
Beetles were found to feed on leaves of Physalis angulata L. (Figs 51–52) and Physalis peruviana L. in Taiwan. Both plants are introduced species for Taiwan originally from the United States. Aoyagi (2012) also mentioned that the probable host plant is Physalis angulata L. in Miyako island of Japan and warned that it is a potential pest for cultivation of a leaf tabacco which is one of popular cultivation in the island.

Distribution

United States and southern Canada, Taiwan (new record), and Japan (Ryukyu: Miyako and Iriomote islands).

Key to species of the genus Lema from Taiwan (modified after Kimoto and Takizawa 1997) A key to 11 known species of Lema from Taiwan was presented by Kimoto and Takizawa (1997). Of these species, Lema postrema Bates, 1866 is a junior synonym of Lema fortunei Baly, 1859 (Schmitt 2010); Lema coromandeliana (Fabricius, 1798) is a junior synonym of Lema praeusta (Fabricius, 1792) (Warchałowski 2011).

Key to species of the genus Lema from Taiwan (modified after Kimoto and Takizawa 1997) — C. Lee , Y. Matsumura

1		Elytron without scutellar row of punctures    (subgenus Petauristes) 2
–		Elytron with a short scutellar row of punctures    (subgenus Lema) 7
2		Elytron blackish-blue    3
–		Elytron yellowish-brown    5
3		Entire elytron blackish-blue    4
–		Lateral margin of elytra yellow, with transverse yellow band at middle    Lema solani Fabricius
4		Generally reddish-brown except antenna black    Lema fortunei Bates
–		Generally black except head and prothorax reddish-brown    Lema honorat'a Baly
5		Entire elytra yellowish    Lema pectoralis Baly
–		Elytra with black spots or stripes    6
6		Elytra with three black, longitudinal stripes    Lema trivittata trivittata Say
–		Elytra with large, black spots at base and subapex; in some specimens entire elytra black except apex    Lema koshunensis Chûjô
7		Mesotibia with a distinct denticulation in middle    Lema coronata Baly
–		Mesotibia without distinct denticulation    8
8		Pronotum with two transverse furrows at basal ½    Lema praeusta (Fabricius)
–		Pronotum with one transverse furrow at basal ½    9
9		Generally blackish-blue    10
–		Generally yellowish-brown    12
10		Pronotum without punctures    Lema cyanea Fabricius
–		Pronotum with punctures    11
11		Abdominal ventrites III-V yellowish-brown, vertex relatively flat    Lema concinnipennis Baly
–		Abdominal ventrites blackish-blue, vertex swollen    Lema cyanella (Linneaus)
12		Middle and hind legs black except front femur reddish-brown    13
–		All legs yellowish-brown    14
13		Body longer (7.5–8.2 mm), abdominal ventrites I-V black (Fig. 2)    Lema diversipes Pic
–		Body shorter (4.5–5.5mm), abdominal ventrites II-V reddish-brown (Fig. 4)    Lema lacertosa Lacordaire
14		Elytron with basal and postmedian black spots    Lema esakii Chûjô
–		Entire elytron yellowish-brown    15
15		Elytron with transverse furrow behind humerus; vertex without pubescence    Lema rufotestacea Clark
–		Elytron without transverse furrow; vertex with dense pubescence    Lema coomani Pic

Taxon Treatment

• Lee, C; Matsumura, Y; 2013: On newly and recently recorded species of the genus Lema Fabricius (Coleoptera, Chrysomelidae, Criocerinae) from Taiwan ZooKeys, 262: 17-38. doi

Images

Figures 49–52. Live adults and larvae in the field. 49–50 Lema solani on Solanum americanum 49 adult 50 larvae 51–52 Lema trivittata trivittata on Physalis angulata 51 adult 52 larvae.