Longitarsus, Berthold, 1827

Prathapan, K. D. & Viraktamath, C. A., 2009, Revision of Tegyrius (Coleoptera: Chrysomelidae: Galerucinae: Alticini), with descriptions of eight new species, Zoological Journal of the Linnean Society 157 (2), pp. 326-358 : 356-357

LONGITARSUS PICEUS (KIMOTO) COMB. NOV.

Tegyrius piceus Kimoto, 2001: 66–67 ; 2005: 98.

KEY TO THE SPECIES OF TEGYRIUS

1. Elytra straw brown, with the anterior third piceous: the piceous colour extending backwards along the lateral and sutural margins ( Fig. 1 )........................................................................................ T. agasthyai sp. nov. Elytra unicolorous: black, brown, or red...............................................................................................2 2. Pronotum black, elytra red–brown ...................................................................................................... 3 Pronotum and elytra concolorous ........................................................................................................ 4 3. Antennae yellow; apex of aedeagus deeply emarginate in ventral view ( Fig. 28 ) ........................................... ............................................................................................... T. bicolor ( Medvedev, 2001) comb. nov. Antennae black with last and basal antennomeres tainted brown; apex of aedeagus smoothly rounded in ventral view ( Fig. 8 ) ........................................................................ T. antennatus ( Medvedev, 2001) comb. nov. 4. Mesotibia sexually dimorphic: distinctly curved and distally enlarged in males ( Fig. 79 ); straight in females ( Fig. 80 ). Feed on Piper mullesua Buch. , with globose female spikes. Restricted to Nilgiri Hills.....................5 Mesotibia not sexually dimorphic; feed on Piperaceae with elongate spikes; not occurring in Nilgiri Hills (except T. keralaensis comb. nov., which occurs throughout southern India) ...................................................... 6 5. General colour brown; apex of aedeagus in ventral view broad, with a denticle ( Fig. 92 ); receptacle of spermatheca neither narrowed towards duct nor broadened towards pump ( Fig. 96 ) ...................... T. pucetibialis sp. nov. General colour black; apex of aedeagus in ventral view bifid ( Fig. 83 ); receptacle of spermatheca distinctly narrowed towards duct and broadened towards pump ( Fig. 87 )................................ T. nigrotibialis sp. nov. 6. Pronotum without antebasal transverse impression; posterior margin of last visible ventrite of females with a deep circular incision, bearing an acute process in the middle ( Fig. 17 )................................ T. anupama sp. nov. Pronotum with antebasal transverse impression; posterior margin of last visible ventrite of females complete..7 7. Punctures in antebasal transverse impression not stronger than those on the rest of the pronotum; first metatarsomere sexually dimorphic, with ventrolateral side thickly adorned with short capitate setae or bud-like sensillae in males, and thin hair-like setae in females; lobe in the middle of the last visible ventrite of males with concave posterior margin ( Fig. 27 , 33 , 71 ); restricted to Sri Lanka ............................................................8 Punctures in the antebasal transverse impression stronger than those on the rest of the pronotum; first metatarsomere not sexually dimorphic, ventral side with thin hair-like setae in both sexes; lobe in the middle of the last visible ventrite of males with straight or convex posterior margin ( Figs 42 , 53 , 82 , 100 ); restricted to India..............................................................................................................................................9 8. Subparallel ridges on first abdominal ventrite nearly parallel with each other ( Fig. 70 ); aedeagus in ventral view with ridge along lateral margins ( Fig. 72 ); outer side of spermathecal receptacle concave ( Fig. 76 )................... ................................................................................................................... T. metallicus Jacoby, 1887 Subparallel ridges on first abdominal ventrite converge distally and fuse together ( Fig. 32 ); aedeagus in ventral view without ridge along lateral margins ( Fig. 34 ); outer side of spermathecal receptacle convex ( Fig. 38 )......... .......................................................................................................................... T. buddhai sp. nov. 9. Antennae yellow; aedeagus in ventral view without wedge-like preapical ridge ( Fig. 54 ) ................................ ........................................................................................... T. keralaensis ( Doeberl, 2003) comb. nov. At least three or four distal antennomeres piceous; aedeagus in ventral view with wedge-like preapical ridge ( Figs 43 , 101 , 110 ) .......................................................................................................................... 10 10. Apex of aedeagus preapically constricted in ventral view ( Fig. 101 ) .............................. T. radhikae sp. nov. Apex of aedeagus preapically widened in ventral view ( Figs 43 , 110 ) ....................................................... 11 11. Antennae extend beyond half of the elytra over the pronotum; basal six to eight antennomeres, and fore and middle legs yellow brown; lateral angulation of apex of aedeagus in ventral view not prominent ( Fig. 110 )....... ............................................................................................................................. T. tippui sp. nov. Antennae extend up to half of the elytra over the pronotum; basal antennomeres, and fore and middle legs dark brown to piceous; lateral angulation of apex of aedeagus in ventral view prominent ( Fig. 43 ).......................... ............................................................................................................................... T. dalei sp. nov.

Remarks: This species lacks all the salient characters of Tegyrius , especially those of the head and the subparallel ridges on the first abdominal ventrite. The fact that the first metatarsomere is half as long as the metatibia, a feature common to both Longitarsus and Tegyrius , was probably the source of the temptation for placing it in Tegyrius . Undoubtedly, this is a member of the cosmopolitan Longitarsus , as it has all the characters of the genus, including the serrulations on the dorsolateral edge of the metatibia.

Type material examined: Paratype. Labels : (1) (E. Nepal) Gupa Pokali (2900 m a.s.l.) 27°17′N, 87°30′E, Gurza (2100 m a.s.l.) 27°18′N, 87°33′E; (2) 23 June 1972, H. Makihara leg. Kyushu Univ. Col. ; (3) Paratype; (4) Tegyrius piceus Kimoto sp. nov., det. S. Kimoto, 19; (5) examined by K. D. Prathapan 2007 ( KU) .

Figures

Figures 1–5. Tegyrius agasthyai sp. nov.: 1, elytra; 2, intercoxal ridges on the first abdominal ventrite; 3, spermatheca; 4, vaginal palpi; 5, tignum.

Figures 25–31. Tegyrius bicolor comb. nov. (specimen from Knuckles Range): 25, intercoxal ridges on first abdominal ventrite; 26, male last abdominal ventrite, ventral view; 27, male last abdominal ventrite, posterior view, showing the infolded middle lobe; 28, aedeagus, ventral view; 29, aedeagus, lateral view; 30, distal opening; 31, tegmen.

Figures 6–14. Tegyrius antennatus (Medvedev, 2001) (specimens from the Knuckles Range); 6, intercoxal ridges on the first abdominal ventrite; 7, male last abdominal ventrite; 8, aedeagus, ventral view; 9, aedeagus, lateral view; 10, distal opening; 11, tegmen; 12, spermatheca; 13, vaginal palpi; 14, tignum.

Figures 79–89. Tegyrius nigrotibialis sp. nov.: 79, mesotibia of male, lateral view; 80, mesotibia of female, lateral view; 81, intercoxal ridges on first abdominal ventrite; 82, male last abdominal ventrite; 83, aedeagus, ventral view; 84, aedeagus, lateral view; 85, distal opening; 86, tegmen; 87, spermatheca; 88, vaginal palpi; 89, tignum.

Figures 90–98. Tegyrius pucetibialis sp. nov.: 90, intercoxal ridges on first abdominal ventrite; 91, male last abdominal ventrite; 92, aedeagus, ventral view; 93, aedeagus, lateral view; 94, distal opening; 95, tegmen; 96, spermatheca; 97, vaginal palpi; 98, tignum.

Figures 15–21. Tegyrius anupama sp. nov.: 15, intercoxal ridges on the first abdominal ventrite; 16, male last abdominal ventrite; 17, female last abdominal ventrite; 18, aedeagus, ventral view; 19, aedeagus, lateral view; 20, distal opening; 21, tegmen.

Figures 32–40. Tegyrius buddhai sp. nov.: 32, intercoxal ridges on first abdominal ventrite; 33, male last abdominal ventrite; 34, aedeagus, ventral view; 35, aedeagus, lateral view; 36, distal opening; 37, tegmen; 38, spermatheca; 39, vaginal palpi; 40, tignum.

Figures 69–75. Tegyrius metallicus: 69, metanotum; 70, intercoxal ridges on first abdominal ventrite; 71, male last abdominal ventrite; 72, aedeagus, ventral view; 73, aedeagus, lateral view; 74, distal opening; 75, tegmen.

Figures 41–46. Tegyrius dalei sp. nov.: 41, intercoxal ridges on first abdominal ventrite; 42, male last abdominal ventrite; 43, aedeagus, ventral view; 44, aedeagus, lateral view; 45, distal opening; 46, tegmen; 43b, aedeagus of Tegyrius tippui sp. nov., apex in ventral view.

Figures 51–60. Tegyrius keralaensis comb. nov.: 51, head; 52, intercoxal ridges on first abdominal ventrite; 53, male last abdominal ventrite; 54, aedeagus, ventral view; 55, aedeagus, lateral view; 56, distal opening; 57, tegmen; 58, spermatheca; 59, vaginal palpi; 60, tignum.

Figures 99–104. Tegyrius radhikae sp. nov.: 99, intercoxal ridges on first abdominal ventrite; 100, male last abdominal ventrite; 101, aedeagus, ventral view; 102, aedeagus, lateral view; 103, distal opening; 104, tegmen.

Figures 76–78. Tegyrius metallicus: 76, spermatheca; 77, vaginal palpi; 78, tignum.

Figures 108–113. Tegyrius tippui sp. nov.: 108, intercoxal ridges on first abdominal ventrite; 109, male last abdominal ventrite; 110, aedeagus, ventral view; 111, aedeagus, lateral view; 112, distal opening; 113, tegmen.