Hemilactica Blake, 1937

Konstantinov, Alexander S., 2021, Flea beetles of the West Indies: the genus Hemilactica Blake, 1937 (Coleoptera, Chrysomelidae, Galerucinae, Alticini), ZooKeys 1044, pp. 589-607: 589

publication ID

http://dx.doi.org/10.3897/zookeys.1044.62632

publication LSID

lsid:zoobank.org:pub:72B0A5B2-19EC-46E8-A463-3881B3DDF446

persistent identifier

http://treatment.plazi.org/id/BD90C768-1C94-5182-BC8D-A39AE186B399

treatment provided by

ZooKeys by Pensoft

scientific name

Hemilactica Blake, 1937
status

 

Hemilactica Blake, 1937  

Hemilactica   Blake, 1937: 37. Type species: Hemilactica pulchella   Blake, 1937: 37, by original designation.

Distribution.

Cuba, Hispaniola, Puerto Rico.

Host plants.

Micropholis guyanensis   (A. DC.) Pierre ( Sapotaceae  ), wild balata ( Blake 1964 for Hemilactica portoricensis   Blake).

Remarks.

While describing the genus, Blake compared it with Lactica   Erichson and Diphaulaca   Chevrolat. It is indeed similar externally to both. However, Hemilactica   specimens are missing sclerotized vaginal palpi as Lactica   and related genera ( Viswajyothi and Konstantinov 2020). The type species of Diphaulaca   [ D. aulica   (Olivier)] has vaginal palpi well sclerotized and fully visible. Because of the structure of on the beetle’s head sulci and ridges, the grooves on the pronotum and general body shape, Hemilactica   generally fits into the Monomacra   group of genera as roughly defined by Bechyne and Springlova de Bechyne (1975) and described in more details in Viswajyothi and Konstantinov (2020). In order to facilitate identification of Hemilactica   , a key to it and related genera previously published ( Viswajyothi and Konstantinov 2020) is provided at the end of the paper.

Currently known Hemilactica   species exhibit some noticeable differences in “genus” level characters as they are currently understood for the purpose of revising flea beetle genera of the West Indies. The type species, H. pulchella   and H. rugosa   Blake are quite similar in having strongly punctate dorsum and relatively long and narrow frontal ridge, while species that Blake (1964) described later (e.g., H. portoricensis   ) have a much shorter and wider frontal ridge and smooth elytra with much smaller elytral and pronotal punctations. However, the other substantial features of these beetles look similar. Therefore, they are all retained under Hemilactica   until more evidence comes to light. Lactica megaspila   Blake (Fig. 26 View Figures 25–28 ) is clearly congeneric with Hemilactica portoricensis   and therefore is transferred here to Hemilactica   .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

Loc

Hemilactica Blake, 1937

Konstantinov, Alexander S. 2021
2021
Loc

Hemilactica

Blake 1937
1937
Loc

Hemilactica pulchella

Blake 1937
1937