Mortoniella (Mortoniella) atenuata ( Flint, 1963 )

Blahnik, Roger J. & Holzenthal, Ralph W., 2017, Revision of the northern South American species of Mortoniella Ulmer 1906 (Trichoptera: Glossosomatidae: Protoptilinae) *, Insecta Mundi 2017 (602), pp. 1-251: 46-47

publication ID

http://doi.org/10.5281/zenodo.5170203

publication LSID

lsid:zoobank.org:pub:AB1A57F0-7CB4-4830-920B-DF219740A596

DOI

http://doi.org/10.5281/zenodo.5186297

persistent identifier

http://treatment.plazi.org/id/03F687A7-FFD7-F837-FF01-B8A64244FECF

treatment provided by

Felipe

scientific name

Mortoniella (Mortoniella) atenuata ( Flint, 1963 )
status

 

Mortoniella (Mortoniella) atenuata ( Flint, 1963)  

Fig. 28 View Figure 28 , 110 View Figures 110-113

Mexitrichia atenuata Flint 1963: 473   .

Mortoniella atenuata (Flint)   : Blahnik and Holzenthal 2008: 69 [member of leroda group].

Mortoniella atenuata   is perhaps most similar to M. brevis   , n. sp. due to the similarity in the shape of the paramere appendages of both species: each appendage is widely forked, with the ventral branch longer and both branches distinctly sclerotized. It is distinguished from M. brevis   by the elongate ventral projections of the inferior appendages. Although the latter character is shared by the other species in the group, the ventral projections are differently formed in each species. They are distinctly shorter and less sclerotized in M. leei Flint   and strongly rounded in M. dinotes   , n. sp. Additionally, the shape of the paramere appendages is different in each of these species.

Adult —Length of forewing: male 2.9-3.6 mm; female 3.5-4.0 mm. Forewing with forks I, II, and III present, hind wing with fork II only. Spur formula 0:4:4. Overall color medium brown. Tibial spurs somewhat darker than legs, not strongly contrasting in color. Wing bar absent in male, forewing sometimes marked with whitish setae at arculus in female. Male with both surfaces of fore- and hind wings densely covered with short prostrate scale-like setae (sometimes lost in alcohol); female with unmodified setation.

Male genitalia —Ventral process of segment VI laterally compressed, short, ventrally projecting, truncately rounded apically, length slightly greater than width at base, process slightly retracted anterobasally. Tergum VIII relatively wide (nearly as wide as previous segment), subtending ventral margin of segment IX, anterior margin of tergum with evident apodeme, posterior margin densely setose; membranous connection to tergum IX elongate, ballooned when expanded, surface slightly textured. Segment IX nearly evenly rounded anterolaterally, length greatest midlaterally, posterolateral margin very slightly projecting, narrowing ventrally; segment deeply mesally excised dorsally and ventrally, forming lateral lobes, separated dorsomesally by much less than ½ width of segment. Tergum X short and strongly sclerotized, with deep U-shaped mesal excision, extending more than ½ length of segment; mesally with short sclerotized, apically rounded, ventral projection, apparently articulating with dorsal phallic spine. Inferior appendages with tapering setose dorsolateral lobes and elongate, narrow, tapering, ventral lobes. Mesal pockets of inferior appendage with apical processes short, dorsally curved. Paramere appendages relatively short, widely forked near base, forming 2 narrow, apically acute projections, ventral projection longer than dorsal one; fused basal segments of paramere articulating with dorsal phallic spine before sinuous middle flexure. Phallobase with rounded, laterally compressed, dorsomesal apodeme. Dorsal phallic spine, as viewed laterally, more or less uniform in width, broadly S-shaped over its length, apex acutely narrowed and upturned; in dorsal view, nearly uniform in width throughout length. Phallicata very short, with short sclerotized dorsal projection and short rounded ventral lobe. Endophallic membrane short, with prominent pair of strongly sclerotized, spine-like sclerites on basodorsal margin (possibly phallotremal sclerites), and very small mesal spine distal to basal sclerites; ventrally with short curved, lightly sclerotized, ventromesal spine.

Material examined — BOLIVIA: La Paz: AMNI Madidi, Río Tuichi and tributary at entrance to Chalalan lodge, 14.41695° S, 67.90630° W, 300 m, 27.vii.2003, Robertson and Blahnik – 1 male (pinned) ( UMSP) GoogleMaps   ; Rayo Mayo river at Wabacuro trail, Chalalan Ecolodge , 14.44257° S, 67.91095° S, 351 m, 28.vii.2003, Robertson and Blahnik – 1 male, 1 female (pinned) ( NMNH)   ; Santa Cruz: Saaveda Exp. Station , 1.iv.1960, R Cumming – 1 male, 2 females (alcohol) ( NMNH)   ; PN and ANMI Amboró, Guardia Parque Mataracú, Río Yapacaní, 17.52072° S, 63.86795° W, 329 m, 26.xi.2004, Robertson, Garcia, Vidaurre – 8 males, 8 females (alcohol) ( UMSP) GoogleMaps   ; PERU: Yurac, 67 mi E Tingo Maria , EI Schlinger and ES Ross, 28.ix.1954 – 2 males, 1 female (alcohol) ( CAS)   ; Avispas, -. x.1962, LE Peña G – 1 male (alcohol) ( NMNH)   ; Cuzco: Pilcopata, premontane moist forest, 600 m, 8-10.xii.1979, JB Heppner – 2 males, 3 females (alcohol) ( NMNH)   ; Madre de Dios: Manu, Pakitza Biological Station, Quebrada Paujil-Picoflor , 11.94417° S, 71.28300° W, 350 m, 2.vii.1993 Blahnik and Pescador – 1 male (pinned) ( NMNH) GoogleMaps   ; Manu, Erika (near Salvacion ), 12.88333° S, 71.23333° W, 550 m, 4-6.ix.1988, O Flint and N Adams – 6 males, 15 females (alcohol) ( NMNH) GoogleMaps   ; Hostel Erica (near Salvacion), 12.88333° S, 71.23333° W, 3-5.ix.1989, RA Faitoute , et al.– 8 males, 6 females (alcohol) ( NMNH) GoogleMaps   ; same locality and date, N Adams et al.– 8 males, 8 females (alcohol) ( NMNH) GoogleMaps   ; Amazonia Lodge, Río Alto Madre de Dios, 12.87033° S, 71.37600° W, 500 m, 30.vi.1993, R Blahnik and M Pescador – 5 males, 4 females (alcohol) ( NMNH) GoogleMaps   ; Pasco: Puerto Bermudez, Río Pichis , 10.2964° S, 74.9364° W, 15.vii.1920 – 3 males (alcohol) ( NMNH) GoogleMaps   .

Distribution — Bolivia, Peru.

UMSP

University of Minnesota Insect Collection

NMNH

Smithsonian Institution, National Museum of Natural History

R

Departamento de Geologia, Universidad de Chile

E

Royal Botanic Garden Edinburgh

CAS

California Academy of Sciences

LE

Servico de Microbiologia e Imunologia

G

Conservatoire et Jardin botaniques de la Ville de Genève

O

Botanical Museum - University of Oslo

N

Nanjing University

M

Botanische Staatssammlung München

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae

Genus

Mortoniella

Loc

Mortoniella (Mortoniella) atenuata ( Flint, 1963 )

Blahnik, Roger J. & Holzenthal, Ralph W. 2017
2017
Loc

Mortoniella atenuata (Flint)

Blahnik, R. J. & R. W. Holzenthal 2008: 69
2008
Loc

Mexitrichia atenuata

Flint, O. S., Jr. 1963: 473
1963