Family Issidae

Subfamily Issinae

Tribe Issini Spinola, 1839

Subtribe Thioniina Melichar, 1906

Genus Picumna Stål, 1864

Type species (in original combination): Picumna varians Stål, 1864.

Synonyms:

    = Cyclumna Fowler, 1904 (Type species Cyclumna subrotunda Fowler, 1904); syn. by Metcalf 1938: 415.
    = Issomorphus Melichar, 1906 (Type species Issomorphus maculatus Melichar, 1906); syn. by Metcalf 1938: 414. .

Distribution: Southwestern US and Central America.

Recognized species

There are 10 species currently assigned to this genus (2 in the US), as follows.

1 Picumna chinai Doering, 1938: 473- USA: AZ, CA, NM, TX; Mexico (Guerrero, Veracruz); Guatemala, Panama

   = Picumna ovatipennis Fowler 1905:128 (nec. Walker 1858)

   Picumna chinae var. __ (Fowler 1905:128) (as Picumna ovatipennis) - Guatemala
2 Picumna maculata (Melichar, 1906: 293) - USA: AZ, NM, TX

3 Picumna mexicana Stål 1864:53 - Mexico

4 Picumna ovatipennis (Walker, 1858)- Mexico (Guerrero, Veracruz) (reported in error: USA: AZ)

   Picumna ovatipennis Fowler [nec Walker] see Picumna chinae Doering
5 Picumna procidua (Melichar 1906:293) - Costa Rica
6 Picumna subovata Caldwell 1945:119 - Mexico (Guerrero, Morelos)
7 Picumna subrotundata (Fowler 1904:116) - Mexico (Guerrero, Michoacán, Morelos), Panama
8 Picumna testacea Metcalf 1938:415 - Panama
9 Picumna varians Stål 1864:52 - Mexico (Tabasco, Veracruz), Panama, Guatemala
   Picumna varians var. a, var. b Stal 1864:52 - Mexico
10 Picumna venosa Fowler 1905:128 - Mexico (Guerrero, Morelos)

Economic Importance:

Limited.

Known host plants: 

Picumna maculata - Pinus sp. (Pine, Pinaceae)

Hosts from Wilson et al. 1994; plant names from USDA PLANTS or Tropicos.

Recognition:

Hind wings well-developed (evident by peering beneath the forewings in ventral view), bearing large notch in hindwing at claval fold, body stout (broader than Thionia), hind tibiae with 4 lateral spines (fewer in Thionia)

Hind tibia and tarsus of Picumna chinae showing 4 lateral spines.

Key to species of Picumna from Doering (1938)

Picumna chinai (photographs by Kimberley Shropshire, University of Delaware)

This genus is not present on Bugguide (which is odd since they are common in collections).

Collecting

Adults are taken beating woody vegetation.

Molecular resources: There are no data for this genus on Genbank; Barcode of Life has data for both species found in the US (Picumna chinai and P. maculata).

Selected references:

Caldwell, J. S. 1945. Notes on Issidae from Mexico (Homoptera: Fulgoroidea). Annals of the Entomological Society of America 38: 89-120.

Doering. K. C. 1938. A contribution to the taxonomy of the subfamily Issinae in America north of Mexico (Fulgoroidea: Homoptera. Part II. University of Kansas Science Bulletin 25(20): 447-575.

Fowler, W. W. 1904. Order Rhynchota. Suborder Hemiptera-Homoptera. (Continued). Biologia Centrali-Americana; contributions to the knowledge of the fauna and flora of Mexico and Central America 1: 85-124, 125-139.

Gnezdilov, V. M. 2009. Revisionary notes on some tropical Issidae and Nogodinidae (Hemiptera: Fulgoroidea). Acta Entomologica Musei Nationalis Pragae 49(1): 75-92.

Melichar, L. 1906. Monographie der Issiden. (Homoptera). Abhandlungen der Kaiserlich-Königliche Zoologisch-Botanischen Gesellschaft in Wien 3: 1-327.

Metcalf, Z. P. 1938. The Fulgorina of Barro Colorado and other parts of Panama. Bulletin of the Museum of Comparative Zoology, Harvard Coll. 82: 277-423. [available from http://www.biodiversitylibrary.org]

Metcalf, Z. P. 1958. General Catalogue of the Homoptera. Fascicle IV, Fulgoroidea, Part 15, Issidae. Waverly Press, Inc., Baltimore, Maryland.

Stål, C. 1864. Hemiptera mexicana enumeravit speciesque novas descripsit. (Continuatio). Entomologische Zeitung. Herausgegeben von dem entomologischen Vereine zu Stettin. Stettin 25: 49-86.

Walker. F. 1858. Supplement. List of the specimens of Homopterous insects in the collection of the British Museum. 307 pp.

Wilson, S. W., C. Mitter, R. F. Denno, and M. R. Wilson. 1994. Evolutionary patterns of host plant use by delphacid planthoppers and their relatives. In: R. F. Denno and T. J. Perfect, (eds.). Planthoppers: Their Ecology and Management. Chapman and Hall, New York. Pp. 7-45 & Appendix.