Polyplectropus annulicornis Ulmer

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 56-58

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Polyplectropus annulicornis Ulmer


Polyplectropus annulicornis Ulmer

Figs. 25, 141

Polyplectropus annulicornis Ulmer, 1905b: 91 . [Type locality: Brazil, Rio Gr. do Sul; NMW; female].— Flint, 1966a: 4 [lectotype female].

This species resembles P. rodmani , new species, in having 2 elongate, endothecal spines in the phallus and in the overall shape of the male genitalia. However, P. annulicornis can be distinguished from P. rodmani by the posterior projection of the ventral branch of the inferior appendage, being more or less flat in P. rodmani , thus the dorsal, sclerotized projection originates more mediad on the dorsal surface of the ventral branch in P annulicornis and more proximal in P. rodmani . The laterally directed intermediate appendage, the more elongate ventral branch of the inferior appendage, and a shorter dorsal lobe of the mesoventral process of the preanal appendage are also useful characters to distinguish P. annulicornis from this species.

Adult. Length of forewing 5.3–6 mm, n = 8. Color of head, thorax, and legs brown; setae on body brown with clusters of grey setae on apex of head; tegulae with long, golden brown and grey setae; setae on wings brown with scattered patches of golden setae.

Male genitalia. Sternum IX in lateral view broadly deltoid, anterior margin submedially produced, posterior margin sinuate and submedially concave; in ventral view rectangular, anterior margin concave, posterior margin with slight median flange. Tergum X membranous, oblong, bearing dorsal microsetae.

Intermediate appendage as long as inferior appendage, digitate, with apical setae; in dorsal view digitate, apex narrowing laterad; in caudal view digitate, curved, directed ventrolaterad. Preanal appendage tripartite; dorsolateral process elongate, originating from dorsum of mesolateral process, recurved posterad, tapering mesally into acute apex, slightly expanded subapically; mesolateral process setose; in dorsal view oblong, in lateral view deltoid; mesoventral process setose; in lateral view hook-like, dorsally produced into digitate lobe with ventrad-directed sclerotized apex, ventral margin concave, posterior margin slightly angled; in caudal view processes separated, with dorsal digitate lobe, ventral margin of process acute. Inferior appendage bipartite with anterior basal plate not extending anterad beyond sternum IX when observed in lateral view, anteriorly bilobed; dorsal branch setose, in lateral view quadrate, posterior margin truncate and subapically slightly produced posterad; in ventral view broad, lateral margin subapically produced, undulate, posterior margin undulate and rounded, mesal margin slightly undulate, apically expanded, becoming concave, expanding posterad into ventral branch; ventral branch setose, elongate, bearing acute, medial projection, in lateral view digitate, rounded posterad; in ventral view oblong, mesal margin slightly angled, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view sinuate, apex oblong; apex of dorsal phallic sclerite in dorsal view emarginate; endothecal membrane with 2 stout, medium-sized, sclerotized spines, apex directed ventromesad, bearing apical setae.

Female genitalia. Similar to female of P. alatespinus .

Material Examined. BRAZIL: Paraná: trib[utary] to Rio Mãe Catira , 10.5 km N Porto de Cima, 25°21'47"S, 48°52'35"W, 200 m, 10.xii.1997, Holzenthal & Huisman — 1 male ( UMSP) GoogleMaps ; Rio Mãe Catira , 10 km N Porto de Cima, 25°21'49"S, 48°52'28"W, 200 m, 8–9.xii.1997, Holzenthal & Huisman — 1 male ( UMSP) GoogleMaps ; Santa Catarina, Nova Teutônia , 20.viii.1939, F. Plaumann — 1 male ( MCZ) ; same, 17.ix.1939, F. Plaumann — 1 female ( MCZ) ; same, 4.x.1939, F. Plaumann — 1 female ( MCZ) ; Nova Teutônia , 27°11'00"S, 52°23'00"W, 300–500 m, viii.1963, F. Plaumann — 2 males ( NMNH) GoogleMaps ; same, ix.1963, F. Plaumann — 1 male ( NMNH) .

Distribution. Brazil.

Remarks. According to Flint (1966) the syntypic series consisted of females. He designated a female lectotype and compared it to a series of males and female also previously collected by Plaumann. Flint illustrated the male genitalia from this series. We believe the males and females collected by Plaumann in 1939 and carefully compared by Flint with the lectotype, are the ones we examined and illustrated.


University of Minnesota Insect Collection


Museum of Comparative Zoology


Smithsonian Institution, National Museum of Natural History














Polyplectropus annulicornis Ulmer

Chamorro, Maria Lourdes & Holzenthal, Ralph W. 2010

Polyplectropus annulicornis

Flint, O. S., Jr. 1966: 4
Ulmer, G. 1905: 91