Macrostemum fastosum Walker, 1852

Uy, Christine Jewel C., Malicky, Hans & Bae, Yeon Jae, 2018, Review of the filter-feeding caddisfly subfamily Macronematinae (Trichoptera: Hydropsychidae) in tropical Southeast Asia, Raffles Bulletin of Zoology 66, pp. 664-703 : 677

publication ID

https://doi.org/ 10.5281/zenodo.5360916

publication LSID

lsid:zoobank.org:pub:5AC21789-E1C1-4B48-813D-667D7638893C

DOI

https://doi.org/10.5281/zenodo.5457007

persistent identifier

https://treatment.plazi.org/id/862D87A3-FFB8-FF93-FF75-A940FBC27DEB

treatment provided by

Valdenar

scientific name

Macrostemum fastosum Walker, 1852
status

 

Macrostemum fastosum Walker, 1852 View in CoL

( Figs. 90–94 View Figs )

Macrostemum fastosum Walker, 1852: 76 View in CoL [Holotype male; Hong Kong; BMNH]; Malicky, 1998b: 769 (redescription).

Macronema tripunctatum Banks, 1924: 451 [Holotype male; Philippines; MCZ; synonymised by Fischer, 1963: 186].

Diagnosis. Male. Antennae 35 mm in length. Antennal flagellum brown; darker colour of striations not obvious. Forewing 14 mm and hind wing 7 mm in length with dark brown stripe along middle of forewing; apex with evident dark brown markings ( Fig. 90 View Figs ). Mesoscutum and mesoscutellum without evident markings. Tibial spurs 2.4.4.

Male genitalia. Inferior appendages two-segmented, harpago long. In lateral view, phallus with longer posterior area of apex ( Fig. 93 View Figs ). In dorsal view, segment X divided at middle and pointed toward apex laterally ( Fig. 92 View Figs ).

Female. Antennae 30 mm in length. Antennal flagellum dark brown in first few segments, and lighter throughout. Forewing 14 mm and hind wing 9 mm in length, same pattern as male. Mesoscutum and mesoscutellum without evident markings. Tibial spurs 2.4.4.

Material examined. Thailand: 20 males, 15 females, Mae Kampong, Mae La stream, coll. C.J. Uy, 14 May 2015 ( UPLBMNH) ; Vietnam: 7 males, 13 females, Tam Dao , coll. H. Malicky, 19 May–13 June 1995 (HMPC) ; Indonesia: 7 males, 13 females, Sumatra, Simarito , coll. H. Malicky, 14 February 1994 (HMPC) ; Laos: 1 female, Luang Prabang Province, coll. C. Holzschuh, 24 April–16 May 1999 (HMPC).

Distribution. Burma, China, India, Java, Bali, Laos, Malaysia (Perak), Nepal, Philippines, Thailand, Vietnam.

Remarks. This species can be easily distinguished from other congeners from its distinct wing pattern ( Fig. 90 View Figs ). However, we observed that specimens from Vietnam have thicker brown stripes on forewings. Other diagnostic characters are illustrated in Figs. 91–94 View Figs .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydropsychidae

Genus

Macrostemum

Loc

Macrostemum fastosum Walker, 1852

Uy, Christine Jewel C., Malicky, Hans & Bae, Yeon Jae 2018
2018
Loc

Macronema tripunctatum

Fischer FCJ 1963: 186
Banks N 1924: 451
1924
Loc

Macrostemum fastosum

Malicky H 1998: 769
Walker F 1852: 76
1852
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