Phylloicus bicarinatus, Prather, 2003

PRATHER, AYSHA L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), Zootaxa 275 (1), pp. 1-214 : 32-34

publication ID

https://doi.org/ 10.11646/zootaxa.275.1.1

publication LSID

lsid:zoobank.org:pub:89BC39FD-ABCC-4634-876D-8C1F4337C325

DOI

https://doi.org/10.5281/zenodo.5081037

persistent identifier

https://treatment.plazi.org/id/546087A8-FF8A-2A11-FEA9-FC10FE46E0D2

treatment provided by

Felipe

scientific name

Phylloicus bicarinatus
status

new species

Phylloicus bicarinatus , new species

Figs. 25 View FIGURE 25 , 26 View FIGURE 26 , 107 View FIGURES 105-108. — 105

This species can be distinguished by the double keel or carinae of tergum X ( Fig. 25B View FIGURE 25 ). The forewing pattern is similar to that of P. elegans and lituratus and maculatus , but in P. bicarinatus the setae forming the pattern are bright white, forming a crescent­shaped proximal band, in contrast to the ivory­yellow setae and the V­shaped proximal band of the other three species.

Adult. Forewing length 9­9.9 mm, n = 28.

Head chestnut brown. Maxillary palps dark brown. Antenna twice forewing length; dark brown, with narrow patches of pale sensilla on anteromesal surface of each flagellomere. Dorsal pterothorax chestnut brown; ventrolateral thorax golden brown. Femora golden brown; foretibiae dark brown; mesotibiae dark brown; metatibiae dark brown; foretarsi chestnut brown; mesotarsi dark brown; metatarsi dark brown. Metathoracic leg of male with posterior fringe of long setae, setae dark. Tibial spur formula 2,4,4. Forewing flat; black; with two transverse bands; proximal band white, extending from anterior to posterior wing margin; distal band white, beginning at anterior wing margin, at least 1/2 width of wing, widest and densest anteriorly; with single basal stripe, white ( Fig. 107 View FIGURES 105-108. — 105 ). Hind wing basal brush present in male, dark brown.

Male. Preterminalic abdominal terga with anteromesal notch. Corematic structures absent, terga III­V unmodified, without membranous lobes or sclerotized processes. Sternum VII with short, acute anteromesal process. Sternum VIII enclosing base of elongate sternum IX; posteromesal process notched, notch deep and round ( Fig. 25A, C View FIGURE 25 ). Tergum IX without mesal ridge; posterior margin smoothly rounded; thinly sclerotized anteromesally ( Fig. 25B View FIGURE 25 ); lateral ridge present; dorsal pleural setae approximately 8, ventral pleural setae absent ( Fig. 25A View FIGURE 25 ). Preanal appendage less than 2/3 length of tergum X, narrowly elliptic, setae long, but not filamentous or longer than appendage ( Fig. 25A, B View FIGURE 25 ). Tergum X without basal lobes; basodorsal process short and bifid; basolateral processes short, length less than or equal to diameter; apex, in lateral view, rounded, in dorsal view, notched, notch shallow; with paired mesal carinae ( Fig. 25A, B View FIGURE 25 ). Harpago slightly tapered; peglike setae few, apical ( Fig. 25A, C View FIGURE 25 ). Phallic endotheca with paired basolateral lobes, basolateral lobes tapered apically; phallotremal sclerites average size, longest dimension less than diameter of phallobase; dorsal sclerite ovoid, in dorsal view horseshoe­shaped ( Fig. 25D, E View FIGURE 25 ).

Female. Preterminal abdominal terga with anteromesal notch. Sternum VII with short pointed anteromesal process. Tergum VIII without posterolateral brush; sternum VIII posterior margin entire; sternum VIII ( Fig. 26C View FIGURE 26 ). Tergum IX with very short mesal ridge ( Fig. 26B View FIGURE 26 ). Sternum IX anterior and posterior lobes darkly sclerotized and striate, with patch of lightly sclerotized cuticle lateral to vaginal opening ( Fig. 26A View FIGURE 26 ). Tergum X appendage shorter than mesal lobe, base indistinct, apex oblique; mesal lobe lightly sclerotized; digitate lateral processes long, at least twice diameter and often asymmetrical ( Fig. 26B View FIGURE 26 ). Sternum X with patches of short fine setae posterolaterally to anal opening ( Fig. 26A View FIGURE 26 ). Vaginal apparatus anterior and posterior sclerites equal in length; anterior sclerite truncate anteriorly, posterolateral projections absent; posterior sclerite ovoid ( Fig. 26A View FIGURE 26 ).

Holotype male: PERU: Madre de Dios: Manu Biosphere Res., Pakitza Bio. Sta., Quebrada Trompetero , trail 2, marker 15, 11°56'39”S, 71°16'59"W, 350 m, 3.vii.1993, Blahnik & Pescador ( MHNJP). GoogleMaps

Paratypes: BOLIVIA: La Paz: Río Alto Beni, Palos Blancos , 600 m, 11­15.i.1976, Peña G. — 1 male ( NMNH) ; Santa Cruz: Sara , 450 m, Steinbach — 1 male ( CMNH) ; PERU: Cuzco: Quincemil , xi.1962, Peña G. — 1 male ( CNC) ; — 2 males ( NMNH) ; Madre de Dios: Toma del Agua, Amazonia Lodge , 12°52'13”S, 71°22'34"W, 415 m, 29.vi.1993, Blahnik & Pescador — 1 male ( NMNH) GoogleMaps ; — 1 male ( UMSP) GoogleMaps ; Manu Biosphere Res., Pakitza Bio. Sta. , 11°56'00”S, 71°18'00"W, 350 m, 30.ix.1987, Pogue — 1 male ( NMNH) GoogleMaps ; 01­13­03­99, 11°56'00”S, 71°18'00"W, 350 m, 2.x.1987, Pogue — 1 male ( NMNH) GoogleMaps ; Aquajal , 11°56'00”S, 71°18'00"W, 250 m, 12.ix.1988, Pogue — 2 males ( NMNH) GoogleMaps ; trail 1, marker 14 (1st stream), 11°56'00”S, 71°18'00"W, 250 m, 19­23.ix.1989, Adams et al. — 1 male ( NMNH) GoogleMaps ; trail 1, marker 4 (near tents), 11°56'00”S, 71°18'00"W, 250 m, 8­22.ix.1989, Adams et al. — 1 female, 3 males ( NMNH) GoogleMaps ; — 1 male ( MHNJP) GoogleMaps ; — 1 male ( UMSP) ; trail 2, marker 18, 11°56'00”S, 71°18'00"W, 250 m, 12­23.ix.1989, Adams et al. — 1 male ( MHNJP) GoogleMaps ; — 5 males ( NMNH) GoogleMaps ; Quebrada Paujil­Picoflor , trail 1, marker 13, 11°56'39”S, 71°16'59"W, 350 m, 2.vii.1993, Blahnik & Pescador — 1 female ( NMNH) GoogleMaps ; 4­6.vii.1993, Blahnik & Pescador — 1 female ( MHNJP) ; — 1 female ( NMNH) ; Quebrada Trompetero , trail 2, marker 15, 11°56'39”S, 71°16'59"W, 350 m, 3.vii.1993, Blahnik & Pescador — 1 male ( MHNJP) GoogleMaps ; — 1 female, 2 males ( NMNH) GoogleMaps ; — 2 females ( UMSP) .

Distribution. Bolivia, Peru.

Etymology. Bicarinatus, from the Latin bi­, “two” and carinatus, “keeled,” referring to the double keel of tergum X.

NMNH

Smithsonian Institution, National Museum of Natural History

CMNH

The Cleveland Museum of Natural History

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

UMSP

University of Minnesota Insect Collection