taxonID	type	description	language	source
3CD08228B709F1D9BF8A6C327B93E2FF.taxon	etymology	Etymology. This unique species is named after its host plant. The name is a noun in the genitive case.	en	Prathapan, K. D., Viraktamath, C. A. (2011): A new species of Longitarsus Latreille, 1829 (Coleoptera, Chrysomelidae, Galerucinae) pupating inside stem aerenchyma of the hydrophyte host from the Oriental Region. ZooKeys 87: 1-10, DOI: http://dx.doi.org/10.3897/zookeys.87.1294, URL: http://dx.doi.org/10.3897/zookeys.87.1294
3CD08228B709F1D9BF8A6C327B93E2FF.taxon	description	Description. Length 1.89 - 2.15 mm; width 0.91 - 1.08 mm; female (2.09 - 2.15 mm) slightly larger than male (1.89 - 2.12 mm). General color brown (Fig. 1). Fore- and middle legs, hind tibia and tarsi light brown. Antenna piceous with proximal three to five antennomeres gradually turning brown. Labrum dark brown to piceous, suture narrowly piceous. Ventrites lighter than dorsum. Vertex shiny, impunctate, minutely wrinkled. Ommatidia fully developed. Postcallinal sulcus weak but distinct. Frontal ridge unusual, broad and not sharply raised, anteriorly widening towards frontoclypeal suture, anteriorly forming ill-defined denticle in middle of flat, poorly developed anterofrontal ridge. Maxillary palpus with last palpomere longest. Antenna extends well beyond apex of elytra over pronotum. Second antennomere longer than half of third; second and third together longer than first, subequl to fourth; fifth longer than fourth; fifth to seventh subequal, eighth to tenth progressively shorter than previous antennomere. Pronotum anteriorly wider than posteriorly; 1.27 - 1.34 times wider than long; anterolateral callosity posteriorly lower than anteriorly, not forming denticle at pore; posterolateral callosity protrudes beyond lateral margin; lateral margin weakly curved, anteriorly broader than posteriorly; disc shiny with minute punctures more evident posteriorly. Elytra with well developed humeral calli, punctures distinct, width of interstices smaller than diameter of one puncture in middle of elytron. Elytral apex convex, with one long seta. Hind wings well developed. Scutellum triangular. First male protarsomere 1.60 - 1.67 times longer than wide; first female protarsomere 2.00 - 2.43 times longer than wide. Metatibia strongly curved in dorsal view, slightly curved in lateral view. Number of spinules on dorsolateral margin of metatibia, proximal to row of stiff bristles, vary from seven to ten. In lateral view, first metatarsomere 0.55 - 0.57 times as long as metatibia. Proximal end of first metatarsomere ventrally with thick characteristic patch of short pointed and capitate setae in both sexes. Last male ventrite internally with longitudinal ridge along middle (Fig. 5); posterior margin bisinuate. Aedeagus in lateral view gently curved, apex acutely pointed and slightly recurved (Fig. 4); ventral side depressed with transparent window, lateral edges raised (Fig. 2); dorsal opening covered with lamina not extending to apex (Fig. 3). Arms of tegmen subequal to or slightly shorter than stem. Spermatheca with receptacle widest in middle, internal side strongly convex, external side weakly concave; pump with horizontal part longer than vertical; spermathecal duct curved towards receptacle, coiled thrice proximally, not reaching half of receptacle (Fig. 6). Vaginal palpus narrow at distal 1 / 3, widest at proximal 1 / 4; distal sclerotization shorter than proximal sclerotization or lateral membranous area (Fig. 8). Tignum nearly straight, anterior sclerotization slightly wider than posterior (Fig. 7).	en	Prathapan, K. D., Viraktamath, C. A. (2011): A new species of Longitarsus Latreille, 1829 (Coleoptera, Chrysomelidae, Galerucinae) pupating inside stem aerenchyma of the hydrophyte host from the Oriental Region. ZooKeys 87: 1-10, DOI: http://dx.doi.org/10.3897/zookeys.87.1294, URL: http://dx.doi.org/10.3897/zookeys.87.1294
3CD08228B709F1D9BF8A6C327B93E2FF.taxon	distribution	Distribution. The types were collected from a single locality only. India (Kerala, Vembayam, 8 ° 38 ' 28 " N, 76 ° 56 ' 39 " E).	en	Prathapan, K. D., Viraktamath, C. A. (2011): A new species of Longitarsus Latreille, 1829 (Coleoptera, Chrysomelidae, Galerucinae) pupating inside stem aerenchyma of the hydrophyte host from the Oriental Region. ZooKeys 87: 1-10, DOI: http://dx.doi.org/10.3897/zookeys.87.1294, URL: http://dx.doi.org/10.3897/zookeys.87.1294
3CD08228B709F1D9BF8A6C327B93E2FF.taxon	discussion	Discussion. Jolivet and Hawkeswood (1995) have listed Bacopa Aublet, 1775 (Scrophulariaceae), a genus of hydrophytes, among host plants of Longitarsus. But no further information is available on its biology on Bacopa. Longitarsus limnophilae and species of Agasicles represent two independently evolved lineages in Alticini adapted for larval leaf feeding and pupation inside the stem. Agasicles and Longitarsus limnophilae are the only flea beetles known to pupate inside the stem of their aquatic host plant above the water level. Wheel shaped stem aerenchyma of Limnophila aquatica serve as a safe abode for the pupa offering protection against natural enemies. Species of Limnophila being widely distributed aquatic weeds, Longitarsus limnophilae could be a potential biocontrol agent for them. This is the first report of an Oriental flea beetle pupating inside the stem of its hydrophyte host.	en	Prathapan, K. D., Viraktamath, C. A. (2011): A new species of Longitarsus Latreille, 1829 (Coleoptera, Chrysomelidae, Galerucinae) pupating inside stem aerenchyma of the hydrophyte host from the Oriental Region. ZooKeys 87: 1-10, DOI: http://dx.doi.org/10.3897/zookeys.87.1294, URL: http://dx.doi.org/10.3897/zookeys.87.1294
