Plectropsyche velascoi , Bueno-Soria, Joaquín & Barba-Alvarez, Rafael, 2015

Bueno-Soria, Joaquín & Barba-Alvarez, Rafael, 2015, New species of Plectropsyche Ross 1947 (Trichoptera: Hydropsychidae: Hydropsychinae), Zootaxa 4040 (4), pp. 421-432: 426-428

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Plectropsyche velascoi

n. sp.

Plectropsyche velascoi  , n. sp.

Figs. 3 View Figure , 5 View Figure

Diagnosis. Plectropsyche velascoi  n. sp. can be separated from the other species of the genus by the two short, horn-like, lateral lobes on segment X as seen in dorsal view; by the elliptical, lateral, setose warts of segment X in lateral view; by the short apical segment of each inferior appendage in posteroventral view; and by the rectangular, apicolateral valves of the phallus in dorsal view. Some of the material here studied was taken from the paratype series of Plectropsyche hoogstraali Ross  , deposited in the Entomological Collection of the Academy of Natural Sciences of Philadelphia ( ANSPAbout ANSP, now Academy of Natural Sciences of Drexel University).

Adult male. Length of each forewing 4.5– 6 mm (n = 8). Color of pinned specimens stramineous, in alcohol light brown, without any marked color pattern. Male genitalia: Abdominal segment IX in dorsal view produced into two widely divergent lobes, each bearing three or more long setae; in lateral view posterior margin produced into long truncate lobe, dorsally tapering with row of long setae. Segment X in dorsal view with apical margin slightly concave at center, flanked on each corner by horn-like lateral lobe and setose wart; in lateral view acuminate with apex rounded and with ellipsoidal, setose wart. Inferior appendages in posteroventral view each having basal segment nearly straight, with scoop-like basal portion, slightly narrowed beyond base and widened again near apex, with several long setae near apex; apical segment cylindrical, less than one-half length of basal segment. Phallus in dorsal view gradually constricted apically to narrow neck, apical region suddenly enlarged to form pair of rectangular, apicolateral valves with straight inner margins.

Adult female: Length of each forewing 4–7 mm (n = 8). Color in alcohol light brown. Female genitalia: In ventral view having segments IX with complex, internal, membranous structures with vaginal opening at center, with two or more rectangular plates and with pair of rounded bag-like structures situated basally; segment X with pair of lateral, setose warts, each wart with pair of stout finger-like lobes underneath cluster of hair-like spines; in lateral view with three pairs of finger-like lobes setose basally, in dorsal aspect fused segment IX+X with dorsal cap covered by two large plates bearing minute setae divided in center; inferior appendage receptacles large, situated at midlength of segment.

Holotype male: MÉXICO: Morelos: San Rafael Vicente Aranda, 15 km SE Tehuixtla, 27.viii. 1982, H. Velasco, # 4130 pinned (CNIN-IBUNAM).

Paratypes: MÉXICO: Estado de México: Bejucos, 02.vii. 1987, J. Padilla, 2 males # 4659, # 4687, 1 female # 4657 pinned (CNIN-IBUNAM). Guerrero: Ciudad Altamirano, 1984, J. Bueno, E. Barrera, 2 males # 4541, # 4542 pinned (CNIN-IBUNAM); Zihuaquio, km 95 Route Coyuca-Zihuatanejo, 24.viii. 1985, R. Barba, F. Arias, 1 male # 4044 pinned, 4 males alcohol (CNIN-IBUNAM); same, but, 28.vii. 1985, 1 male 1 female alcohol ( CNIN- IBUNAMAbout IBUNAM); Presa El Caracol a 70 km de Teloloapan, 21.x. 1988, J. Bueno, 4 males # 4360, # 4365, # 4366, # 4608, 1 female # 4361 pinned (CNIN-IBUNAM); Totoapa, 8 km SO Ahuehuepan, Rta. 51, 1995, R. Barba, D. Ocaña, A. Ocampo, 1 male # 4201 pinned (CNIN-IBUNAM). Michoacán: 5 mi W of Apatzingán, 13.viii. 1941, H. Hoogstraal, 1 male pinned in glycerin, 5 males alcohol ( ANSPAbout ANSP). Morelos: San Rafael Vicente Aranda, 15 km SE Tehuixtla, 27.viii. 1982, H. Velasco, 2 males # 4134, # 4146 pinned (CNIN-IBUNAM); same, but 31.vii. 1982,1 male # 4688 pinned (CNIN-IBUNAM); same, but 18.xi. 1982, 1 male # 4109 pinned (CNIN-IBUNAM); same, but 17.ix. 1982, 11 males 1 female alcohol (CNIN-IBUNAM); same, but 26.iii. 1982, 63 males alcohol ( CNIN- IBUNAMAbout IBUNAM); same, but 16.iv. 1982, 1 male # 4180 pinned (CNIN-IBUNAM); same, but 01.v. 1982, 2 males alcohol (CNIN-IBUNAM); same, but 27.viii. 1982, 1 female pinned (CNIN-IBUNAM); same, but 13.vii. 1982, 2 females # 4660, # 4661 pinned, 3 males alcohol (CNIN-IBUNAM); Balneario Tehuixtla, 13.iv. 1978, H. Brailovsky, 1 male alcohol (CNIN-IBUNAM); 2.5 km NO of Cuautla, Estación CEAMISH TL 3, 10 º 27 ’ 67 ”N, 099º02’47.5”W, elev. 940 m, 11.vii. 1996, E. González, 2 males (CNIN-IBUNAM); same, but, 17.xi. 1995, E. González, S. Zaragoza, 1 male 1 female alcohol (CNIN-IBUNAM); Jojutla, Balneario Las Huertas, 1985, R. Sánchez, 1 male pinned in glycerin (CNIN-IBUNAM); same, but 1987, 2 males alcohol (CNIN-IBUNAM); near Xochitepec, Rt. 95, km 91, 01.viii. 1965, O.S. Flint, Jr., 2 males, 33 females pinned ( NMNHAbout NMNH); Xochitepec, 12–14.vii. 1965, Flint, Jr., 1 male 1 female pinned ( NMNHAbout NMNH); Acatilpa, 16.vii. 1965, Flint, Ortiz, 1 male pinned ( NMNHAbout NMNH); Alpuyeca, Mpio. de Xochitepec, 17 º 39 ’ 53 ”N, 098° 30 ’ 39 ”W, elev. 1074 m, 2006, H. Brailovsky, L. Cervantes, 7 males 33 females alcohol (CNIN-IBUNAM). Nuevo León: Mpio. Bustamante, Ojo de Agua, 13.xi. 1985, elev. 410 m, R. Benavides, 2 males pinned in glycerin, 2 males alcohol (CNIN-IBUNAM). Oaxaca: km 11, carr. Cuicatlán-Sgo. Quiotepec, elev. 610 m, 12.vii. 1996, R. Barba, A. Rojas, 1 male # 4202, 1 female # 4204 pinned (CNIN-IBUNAM).

Etymology. The specific epithet is in honor of Biól. Héctor Velasco-Madrigal, who collected most of the material here studied during his research for his Bachelor degree thesis in Morelos State, México.

Distribution. México (N.L., Mor., Edo. De Méx., Mich., Gro., Oax.).


Academy of Natural Sciences of Philadelphia


Instituto de BiIología, Universidad Nacional Autónoma de México


Smithsonian Institution, National Museum of Natural History