Plectonotum luteipes, Constantin, 2020

Constantin, Robert, 2020, A contribution to the genera Plectonotum Gorham and Hyponotum Wittmer, with the description of sixteen new species from Peru (Coleoptera, Cantharidae), Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 60 (34), pp. 1-27 : 13-16

Plectonotum luteipes sp. nov. ( Figs. 14 , 37 , 73-74 , 106 , 119 )

Type material: Holotype ♂ ( MUSM): Peru, Amazonas, provincia de Chachapoyas, 25 km E of Balsas , flowering shrubs, 06°49′28″S, 77°56′47″W, alt. 2,135 m, 07.V.2018, leg. R. Constantin. Paratypes: 2♂, 3♀, same locality and same date, leg. R. Constantin. Holotype and two paratypes deposited in the collection of the MUSM, other paratypes preserved in author’s collection ( CCo) .

Description: Holotype. Length 3.2 mm. Head black, genae and frons yellow between eyes and in front of the antennal sockets. Prothorax, elytra and abdomen black. Antennae black, the first two antennomeres yellow each with a brown patch on their dorso-lateral face.Labial and maxillary palpi brown, the first joint yellow. Coxae, trochanters and femora yellow, except a black mark on femoral apex, tibiae and tarsi brown except the yellow basal third of the tibiae. Head 0.77 times as wide as the pronotum, the clypeus protruding. Eyes developed, bulging, the interocular space 0.61 times as wide as the head. Frons flattened between the eyes, longitudinally de- pressed on the midline and with two oblique ridges behind the antennal sockets. Mandibles slender, with short apical denticle and slightly crenulate inner edge.Temples short, strongly narrowing backwards. Cephalic surface smooth, feebly shiny, thinly punctate, with recumbent yellowish setae. Antennae as long as the body, the first two antennomeres smooth, the following parallel sid- ed, covered with semi-erected brown setae. Pronotum 1.5 times wider than long, transversally convex with a small discal depression. Front edge straight, rear edge feebly arched, lateral edge slightly converging towards the front with a short shiny bead and an emargination in front of the rectangular basal corners. Pronotal surface shiny, thinly punctate, the punctation 1.5 times smaller than the intervals. Elytra 3 times longer than combined width at the base, markedly rugulose punctate, covered with long, recumbent yellow setae. Abdomen with tergite IX apically triangular and medially notched; sternite IX as long as wide, the apical edge rounded. Aedeagus: tegmen with the apex of the lateral lobes bearing many long setae on posterior side; apico-ventral apophysis dorsally recurved as also the long lateral sclerites; lateral sclerites slender, with an obtuse tooth at mid-length, ventrally recurved at their tip; median lobe tapered.

Dimensions of the holotype: TL = 3.2 mm; AL = 3.1 mm; HW = 0.75 mm; IOW = 0.46 mm; OL = 0.24 mm; IAW = 0.16 mm; PL = 0.64 mm; PW = 0.97 mm; EL = 2.7 mm; EW = 0.9 mm. Length of the antennomeres, in mm: aI = 0.30; aII = 0.13; aIII = 0.26; aIV = 0.31; aV = 0.34; aVI = 0.34 × 0.08; aVII = 0.32; aVIII = 0.30; aIX = 0.27; aX = 0.23; aXI = 0.26. Paratypes ♂: length 3.6 and 3.7 mm.

Paratypes ♀: Differ from the males by the narrower head, flatter eyes, shorter antennae, and elytra wid- er in the apical third. Dimensions of one paratype ♀. TL = 3.4 mm; AL = 2.1mm;HW = 0.63 mm; IOW = 0.40mm; OL = 0.19 mm; IAW = 0.16 mm; PL = 0.58 mm; PW = 0.89 mm; EL = 2.35 mm; EW = 0.84 mm. Other paratypes ♀: length 3.2 and 3.8 mm.

Differential diagnosis: Plectonotum luteipes sp. nov., is similar to P.inca Wittmer, 1988 , by the similar habitus, colour pattern and pronotal shape. It differs from the latter by the longer pronotal bead, the darker legs and the different aedeagus shape.

Etymology: The specific epithet refers to the peculiar colour pattern of the legs.

Natural history: Collected beating flowering shrubs of the steep slopes.

Figures

Figure 119. Map of distribution of the Peruvian Plectonotum and Hyponotum species. (1) Plectonotum altomayo sp. nov.; (2) P. amazonas sp. nov.; (3) P. bicoloricolle sp. nov.; (4) P. carpish sp. nov.; (5) P. celendin sp. nov.; (6) P. costae sp.nov.;(7) P.howdeniWittmer;(8)P.huariacasp.nov.;(9)P.huascaran sp.nov.; (10) P. huertoae sp. nov.; (11) P. inca Wittmer; (12) P. leymebamba sp. nov.; (13) P. longissimum (Pic); (14) P. luteipes sp. nov.; (15) P. martinezi Wittmer; (16)P.neoruficollenom.nov.;(17)P.oxapampasp.nov.;(18)P.peruanumWittmer. (19)P.rubrithoraxsp.nov.;(20)P.shipasbambasp.nov.;(21) Hyponotummacrocephalum sp.nov.;(22)Hyponotumsucchabamba sp.nov.

Figures 9-16. Plectonotum species habitus dorsal. (9) Plectonotum huascaran sp. nov.; (10) P. huertoae sp.nov.; (11) P.inca Wittmer; (12) P.leymebamba sp. nov.; (13) P.longissimum (Pic);(14) P.luteipes sp.nov.; (15) P.martineziWittmer;(16) P.neoruficolle nom.nov.

Figures 36-46. Plectonotum and Hyponotum, head and pronotum. (36) Plectonotum longissimum (Pic); (37) P. luteipes sp. nov.; (38) P. martinezi Wittmer; (39) P.neoruficolle nom. nov.;(40) P.oxapampasp. nov.;(41) P.peruanum Wittmer.(42) P.rubrithorax sp.nov.;(43) P.shipasbamba sp.nov.;(44) Hyponotum macrocephalum sp.nov.;(45) H.succhabamba sp.nov.; (46) H.philippii (Gemminger).

Figures 63-78. Plectonotum species, aedeagus (dorsal, ventral). (63-64) Plectonotum huscaran sp. nov.; (65-66) P. huertoae sp. nov.; (67-68) P. inca Wittmer; (69-70)P.leymebambasp.nov.;(71-72) P.longissimum(Pic);(73-74)P.luteipessp.nov.;(75-76)P.martineziWittmer;(77-78) P.neoruficollenom.nov.Scalebars:0.2mm.

Figures 93-109. Plectonotum species,aedeagus (lateral).(93) Plectonotum altomayo sp. nov.;(94) P.amazonas sp.nov.; (95) P.bicoloricolle sp.nov.;(96) P.carpish sp. nov.; (97) P. celendin sp. nov.; (98) P. costae sp. nov.; (99) P. howdeni Wittmer; (100) P. huariaca sp. nov.; (101) P. huascaran sp. nov.; (102) P. huertoae sp. nov.; (103) P.inca Wittmer;(104) P.leymebamba sp.nov.;(105) P.longissimum (Pic); (106) P.luteipes sp. nov.; (107) P.martinezi Wittmer; (108) P.neoruficolle nom. nov.; (109) P.oxapampa sp.nov.