Polyplectropus laminatus (Yamamoto)

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 174-176

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Polyplectropus laminatus (Yamamoto)


Polyplectropus laminatus (Yamamoto) View in CoL

Figs. 88, 138

Polycentropus laminatus Yamamoto, 1966: 909 . [Type locality: Ecuador, El Oro, 9 miles South of Santa Rosa ; CAS (housed at INHS); male].

Polyplectropus laminatus View in CoL resembles species in the P. laminatus View in CoL subset ( P. bravoae Bueno View in CoL and P. ecuadoriensis , new species). These species have an elongate dorsolateral arm of the phallic sclerite, produced beyond the apex of the dorsal phallic sclerite, short and narrow dorsal branch of the inferior appendage, and membranous, quadrate to oblong intermediate appendage. A narrowed dorsolateral arm of the phallic sclerite is a distinguishing feature of P. laminatus View in CoL (subapically broader in P. bravoae View in CoL ). Additionally, the apex of the intermediate appendage of P. laminatus View in CoL is produced laterad (not produced in P. bravoae View in CoL but further produced laterad and more concave in P. ecuadoriensis ). Furthermore, P. laminatus View in CoL has an obdeltoid ventral branch of the inferior appendage (in ventral view) (digitate in P. ecuadoriensis ) and endothecal phallic spines smaller than in P. ecuadoriensis or P. bravoae View in CoL .

Adult. Length of forewing 4.3–4.5 mm, n = 64. Color of head and thorax brown, legs yellowish-brown; setae on body grey and golden brown; tegulae with long, golden brown and grey setae; setae on wings yellow with small patches of brown setae.

Male genitalia. Sternum IX in lateral view subquadrate, anterior margin supramedially convex, posterior margin submedially concave; in ventral view rectangular, anterior margin concave, becoming straight, posterior margin highly convex. Tergum X membranous, oblong, bearing dorsal microsetae; lower lip of tergum X membranous, smooth, without dorsal microsetae, apex turned dorsad; in dorsal view obtuse; in caudal view produced dorsad of phallocrypt. Intermediate appendage as long as inferior appendage, stout, with long basal setae and few scattered apically; in dorsal view subquadrate, apex truncate, broadening mesally and laterally, apicolateral margin produced posterolaterad, in some specimens not as broad apically; in caudal view setose base digitate, apex quadrate, directed posterolaterad. Preanal appendage tripartite; dorsolateral process bulbous, originating from dorsum of mesolateral process, bearing dorsal microsetae; mesolateral process setose; in dorsal view obovate, in lateral view orbicular; mesoventral process setose; in lateral view hook-like, tapering ventrally into sclerotized apex, anteroventral margin concave, posterior margin convex; in caudal view not fused basomesally, ventral margin of process subacute, with ventrolateral margin produced ventrad. Inferior appendage bipartite with anterior basal plate extending anterad beyond sternum IX when observed in lateral view; dorsal branch setose, in lateral view lanceolate, with dorsal and ventral margins convex and concave, respectively and apex acute; in ventral view narrow, lateral margin convex, entire, posterior margin acute, mesal margin entire, concave, expanding posterad into ventral branch; ventral branch setose, broad, in lateral view obovate, rounded posterad; in ventral view subquadrate, mesal margin straight, shallowly converging mesally. Phallus long; dorsal phallic sclerite in lateral view sinuate; apex of dorsal phallic sclerite in dorsal view rounded; dorsolateral arm of dorsal phallic sclerite in lateral view tapering posterad, apex rounded and turned anterodorsad; in dorsal view digitate, extending beyond apex of phallic sclerite, apex directed dorsolaterad, apex rounded; endothecal membrane with 2 stout, sclerotized spines.

Material examined. COLOMBIA: Antioquia: Río Claro , [5°35'24"N, 75°52'02"W], 3.v.1984, U Matthias — 1 male GoogleMaps ; Valle del Cauca, Río Raposo , [3°53'36"N, 77°04'11"W], i.1965, V. H. Lee — 21 males, 6 females GoogleMaps ; COSTA RICA: Puntarenas: 9 mi NW Esparta , [9°59'00"N, 84°40'00"W], 22.vii.1965, P J Spangler — 1 male ( NMNH) GoogleMaps ; ECUADOR: El Oro: 9 mi South of Santa Rosa , 3°27'00"S, 79°58'00"W, 23.i.1955, Schlinger & Ross — 1 male ( CAS currently at INHS) (holotype) GoogleMaps ; Los Rios: Quevedo (56 km N), Rio Palenque Biological Station , 01°01'59"S, 079°27'00"W, 250 m, 28–29.vii.1976, J Cohen — 10 males GoogleMaps ; PANAMA: Colón: Canal Zone, Gamboa, Pipeline Road , [8°30'00"N, 79°58'00"W], 3.v.1984, W W Wirth — 5 male & females ( NMNH) GoogleMaps ; VENEZUELA: Portuguesa: Río Las Marias at Finca Los Cerajones , ca. 5 km NE Potrero, 9°12'20"N, 69°42'27"W, 270 m, 25.iii.1997, Holzenthal & Flecker — 4 males, 14 females ( UMSP) GoogleMaps ; Zulia: Caño Carichuano , 3.4 km SE Carbones del Guasare, 11°00'07"N, 72°17'06"W, 70 m, 12– 13.i.1994, Holzenthal Cressa & Rincón — 1 male ( UMSP) GoogleMaps .

Distribution. Colombia, Costa Rica, Ecuador, Honduras, Panama, and Venezuela.

Remarks. Type never deposited at CAS, currently at INHS.


Smithsonian Institution, National Museum of Natural History


California Academy of Sciences


Illinois Natural History Survey


University of Minnesota Insect Collection














Polyplectropus laminatus (Yamamoto)

Chamorro, Maria Lourdes & Holzenthal, Ralph W. 2010

Polycentropus laminatus

Yamamoto, T. 1966: 909
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