Polyplectropus beutelspacheri Bueno-Soria

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 226-228

Polyplectropus beutelspacheri Bueno-Soria

Figs. 118, 124

Polyplectropus beutelspacheri Bueno-Soria, 1990: 378 . [Type locality: Mexico, Guerrero, Zihuaquio, km. 95 Carretera 94, Coyuca-Zihuatanejo ; IBUNAM; male].

Polyplectropus beutelspacheri is very similar to species in the P. fuscatus group, especially P. fuscatus based on the absence of a dorsolateral process of the preanal appendage, on the shape of the inferior appendage, and on having a bipartite intermediate appendage. Polyplectropus beutelspacheri does not have a dorsal digitate lobe on the mesoventral process of the preanal appendage unlike P. fuscatus Flint. Polyplectropus beutelspacheri has apically free mesoventral processes like P. tragularius and P. rondoniensis , and not apically fused as in P. fuscatus . In addition, the bipartite intermediate appendage of P. beutelspacheri has a smaller ventral lobe (broader and more prominent in the species mentioned above). Lastly, P. beutelspacheri bears peg-like setae on the ventral branch of the inferior appendage and has endothecal phallic spines, both traits absent in P. fuscatus , P. tragularius , and P. rondoniensis .

Adult. Length of forewing 4–5 mm, n = 20. Color of head, thorax, and legs brown (specimens preserved in alcohol).

Male genitalia. Sternum IX in lateral view rounded, anterior margin highly convex, posterior margin sinuate and medially produced; in ventral view rectangular, anterior margin highly concave, posterior margin with slight median flange. Tergum X membranous, oblong, bearing dorsal microsetae; lower lip of tergum X membranous, smooth, without dorsal microsetae; in dorsal view digitate; in caudal view produced dorsad of phallocrypt. Intermediate appendage not longer than inferior appendage, bipartite, digitate, with a pair of long apical setae with 2 basal papillate lobes bearing small apical setae; in dorsal view primary lobe rounded; in caudal view primary lobe rounded, directed posterodorsad. Preanal appendage bipartite; dorsolaterally with small remnant of process; mesolateral process setose; in dorsal view ovate, in lateral view orbicular; mesoventral process setose; in lateral view hook-like, with ventrad-directed sclerotized apex, anteroventral margin sinuate, posterior margin angled; in caudal view processes separated, ventral margin of process subacute with sclerotized point. Inferior appendage bipartite with anterior basal plate not extending anterad beyond sternum IX when observed in lateral view; dorsal branch setose, in lateral view pandurate; in ventral view broad, lateral margin angled, entire, posterior margin subacute, mesal margin slightly undulate, subapically expanded, expanding posterad into ventral branch; ventral branch setose, elongate and broad, bearing robust, sclerotized spines medially and apically; in lateral view oblong, apically produced dorsad; in ventral view subquadrate, mesal margin slightly angled, gradually converging mesally. Phallus short; dorsal phallic sclerite in lateral view sinuate, apex pandurate; endothecal membrane without embedded spines.

Material examined. MEXICO: Guerrero: Zihuaquio, Km 95, ruta Ciudad Altamirano-Zihuatanejo, [17°38'00"N, 101°33'00"W] , 24.vii.1985, R Barba — 1 male ( IBUNAM) [paratype] ; 25.vii.1985, R Barba — 2 males ( UMSP000100897 specimen drawn) ( IBUNAM) ( NMNH) [paratype] ; Ruta 134, Río Placeres del Oro , [18°13'45"N, 100°54'15"W] , 22.ii.1984, H. Velasco — 1 male ( IBUNAM) [paratype] ; Morelos: Cuernavaca , [18°55'00"N, 99°15'00"W] , 23.ii.1932, A. Dampf — 1 male ( INHS) [paratype] ; 29.ii.1932, A. Dampf — 1 male ( INHS) [paratype] ; 2.iii.1932, Dampf & Plummer — 1 male ( INHS) [paratype] ; 23–29.iii.1932, Dampf & Plummer — 1 male ( INHS) [paratype] ; 8–11.iv.1932, Dampf & Plummer — 2 males ( INHS) [paratype] ; Cuautla , [18°48'00"N, 98°57'00"W] , 1312 m, 27.vii.1937, A. Dampf — 1 male ( INHS); [paratype] 30.viii.1937, A. Dampf — 1 male ( INHS) [paratype] ; 12.ix.1937, A. Dampf — 1 male ( INHS) [paratype] ; Camomilas , [18°44'00"N, 99°04'00"W] , 9.v.1942, A. Dampf — 7 males ( INHS) [paratype] .

Distribution. Mexico.

Remarks. The holotype was not examined. The former curator of Trichoptera at IBUNAM, J. Bueno- Soria, was unable to locate it.