Parcoblatta fulvescens

Description

The male Parcoblatta fulvescens is relatively slender, has long tegmina (outer forewings), and is slightly longer than the female. It is a mostly uniform pale brownish-yellow, with sometimes darker pronotum (the plate behind the head) and legs, and usually dark brown cerci (the pair of appendages on its rear-most segment). Its pronotum is subelliptical (nearly elliptical), is widest just behind its middle, and has weakly defined disc-like impressions.

The female head and pronotum are usually a pale reddish-brown, its short tegmina are reddish brown with paler sides, its abdominal segments are a darker brown, and its legs and underside are a brownish yellow.

The species' ootheca (egg case) is bean-shaped, very dark brown, and measures about 8.5 mm long by 3.8 mm wide. The edge with a seam is curved and has about 40 small crimps or folds. It is similar to the ootheca of P. virginica, but is larger and has slightly narrower spacing of vertical divisions.

Two differently colored forms of the species were regularly collected in Kansas: a dark, olive gray to brown variety from Riley County, Kansas, and a light, golden brown to tan variety from the slopes of the Flint Hills pastures near Manhattan, Kansas.

Similar species

The species was treated by one source in 1910 as a southern variety of Parcoblatta uhleriana, termed P. uhleriana fulvescens, as the males of the two species look very similar. In addition, pre-1917 Arizona records of uhleriana and uhleriana fuvescens refer to Parcoblatta notha.

Female specimens of P. fulvescens can be confused with P. virginica and P. lata. --

Distribution

The distribution of the species includes Ontario, Canada, and the eastern United States, including Alabama, Arkansas, the District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Maryland, Mississippi, Missouri, New Jersey, New York, North Carolina, South Carolina, Virginia, and Texas. It is not clear if the species is native or adventive in Canada.

Habitat

The species has been found in heavy, barrier-beach forest, in pine-barrens undergrowth (both typical or heavy and grassy), on the borders of pine barrens, on swamp edges, in heavy deciduous forest, and in heavy oak woods. In Florida it has been found in mesic hammock, xeric hammock, scrub, and sand hill habitats.

Individuals may be found under dead leaves, pine needles (particularly beneath shortleaf pine), logs, beneath loose bark, or wandering at night.

Additional images

File:Parcoblatta fulvescens (1st to 3rd instar) nymphs.jpg|Likely 1st to 3rd instar nymphs.

References

References

1. (2011). "A Dictionary of Entomology". CABI.
2. "A literature-based dichotomous key for the identification of the cockroach fauna (Insecta: Blattodea) of Florida". Department of Entomology and Nematology, University of Florida.
3. (1966). "Records of the orthopteroid insects in Ontario". Proceedings of the Entomological Society of Ontario.
4. (1990). "Annotated checklist of cockroaches of Florida (Dictyoptera: Blattaria: Blattidae, Polyphagidae, Blattellidae, Blaberidae)". Florida Entomologist.
5. Blatchley, Willis Stanley. (1920). "Orthoptera of northeastern America: with especial reference to the faunas of Indiana and Florida". The Nature Publishing Company.
6. "Synonyms of fulvous wood cockroach (Parcoblatta fulvescens)".
7. "Common names for fulvous wood cockroach (Parcoblatta fulvescens)".
8. (1960). "Biotic associations of cockroaches". The Smithsonian Institution.
9. Lawson, Fred A.. (1967). "Ecological and collecting notes on eight species of Parcoblatta (Orthoptera: Blattidae) and certain other cockroaches". Journal of the Kansas Entomological Society.
10. Hebard, Morgan. (1917). "The Blattidae of North America north of the Mexican boundary". American Entomological Society.