Parcoblatta notha (Rehn, J. A. G. & Hebard 1910)

Parcoblatta notha (Rehn and Hebard) (Plate III, figures 15 to 19.)
1910. hchnoptera notha Rehn and Hebard, Proc. Acad. Xat. Sci. Phila., 1910, p.
442, figs. 21 and 22. (In part.) [c^, Huachuca Mountains, Arizona; 9, Palm-
erlee, Arizona.!^-] 1912. hchnoptera notha Rehn and Hebard. ibid., 191 2, p. 103. [Single Type; cf,
Huachuca Mountains, Arizona.]
All previous records of ''Ischnoptera'' from Arizona, except that of the type of americana Scudcler, from Ehrenberg, properly apply to the present species, which has been confused with nhkriana and '' iMeriana fidvescens.'"
The species has not been found outside that state, the reference, as the present species, by Rehn and Hebard, of Saussure and Zehntner's figure of a female as uhleriana, probably from Texas or New Mexico, being properly referable to P. zebra, as the material now before us clearly shows.
Males of this insect are decidedly the most slender of the larger pale forms of the genus; in the character of the specialization of the median and first dorsal abdominal segments they agree with P. caiidelli and P. lata, but have the projections there found distinctly more pronounced, while the supra-anal plate is distinctive,
"' Incorrectly recorded by Rehn and Hebard as divisa.
132 Confusion in the above paper unquestionably occurred. The references to Caudeil's Arizona records of nhleriana were correctly placed under notha, but the material upon which these were based, as well as one specimen from the Galiuro Range, Arizona, were unfortunately listed by mistake under uhleriana fiilvescens and considered in giving the distribution of that insect. With the original description are unfortunately listed three males from California, representing the pale recessive color condition of americana.
in form showing some homology to that of P. americana, but considerably more specialized.
This species and P. caudelli are the only ones of the pale forms of the genus which, in the females, have complete tegmina and wings. Those of the present species are much larger and more robust than those of caudelli, and have the tegmina and wings decidedly shorter, the former with apices falling distinctly short of the apex of the abdomen. In the females of caudelli these organs have retained the full power of flight, in those of the present species sustained flight would be impossible.
Characters of Male— {Type. Huachuca Mountains, /Vrizona.) Size rather large, form slender. Head much as in caudelli, rather evenly rounded, with ocelli well defined, but margins of ocellar areas rounding rather weakly into the inter-ocellarocular area, which area is feebly flattened, weakly convex, showing a few microscopic punctae. Interocular space narrower than that between antennal sockets, slightly wider than that between ocelli. Pronotum unusually long for the genus, with greatest width distinctly caudad of mesal point and with cephalic angles distinctly more broadly rounded than caudal angles, oblique sulci of disk subobsolete.i" Tegmina and wings normal, fully developed; the former and anterior field of the latter proportionately narrower than in the other species of the genus; wings (in the small series) with three to four incomplete and four to five complete rami of the ulnar vein. Median segment supplied mesad with two subtriangular, rounded but decided, elevations, with cephalic face of each furnished with a ^-er■ hea->tuft of hairs, the surface of the segment is also supplied cephalad of these with a very few scattered hairs. First dorsal abdominal segment similarly specialized in every way, except that the elevations are not as broad and the scattered hairs cephalad are even less numerous. Sixth dorsal abdominal segment with distal margin nearly straight, transerse. Supra-anal plate with lateral margins proximad weakly con-ex and nearly transverse to between the cerci, there con-ex-conergent to the rather broadly rounded apex, the small produced portion with margins thus forming an obtuse angle with those of basal portion; proximal portion transverse and narrow, with surface feebly convex above cerci and feebly concave in intervening area, small produced portion strongly deflexed, with surface concave and strongly declivent distad, thus forming, at the juncture with the proximal portion, a well-defined, rounded and weakly convex, transverse ridge. Cerci elongate and slender, with lateral margins crenate distad. Genital hook showing little narrowing at point of recurature, and with recurved portion stout and of subequal width throughout. Chitinous, aciculate tip of adjacent process more elongate than usual and weakl>curxed dextrad onl>' toward apex. Subgenital plate moderately convex, except toward bases of styles, where a slight concavit}^ is indicated; lateral margins moderately con-ex and feebly conergent in proximal half, then mod-
'■" In the series before us rarel>moderatchpronounced.
erately concave and more strongly con-ergent in distal half, remaining distal portion between styles nearly straight, transverse. Styles'" simple, cylindrical and tapering, unusually long for the genus, length of each only slightly less than distance between their bases, situated in sockets on the caudal faces of small rounded knobs at the disto-lateral angles of the dorsal surface of the subgenital plate.
Characters of Female. — {Allotype. Palmerlee, Arizona.) Very different from male. Size medium large, form stout. Head large and evenly rounded, with interocular space slightKgreater than that between the antennal sockets and ocelli weakly defined by pale spots. Pronotum much larger than in male, broader, with greatest width decidedly caudad of mesal point, discal sulci obsolete. Tegmina and wings with area reduced nearly half; tegmina rounded evenly distad, not reaching the base of the supra-anal plate; wings more abbreviate, with distal margin distincthtruncate, showing two incomplete and two to three complete rami of the ulnar vein. Supra-anal plate decidedly less than half as long as broad, with lateral margins con^•ergent and feebly concave to acute apex. Cerci much as in male, but slighthshorter. Subgenital plate with surface convex and distal margin broadly convex.
Measurements {in millimeters)
-^ Length of Length of Width of Length of Width of
body pronotum pronotum tegmen tegmen
Galiuro Range, Arizona 14,5 3.8 4
Prescott, Arizona 14.6 3.8 4
Huachuca Mountains, Arizona.
h'pe 17 3-9 4
Huachuca Mountains, Arizona . . 17.5 3.8 4
Patagonia Mountains, Arizona. . 18 4.3 5 Santa Rita Mountains, Arizona. . 14.7 4.6 5
Palmerlee, Arizona, allotype 14 4.4 5
8 17.8 4,9
8 17.8 4.9
9 16.7 4.8
8 17.3 4.8 3 18.6 5.6
9 10.2 4
7 9-4 41
Coloration. — cf. {Type. Xormal.) Head, underparts and limbs light ochraceous-buff. ocelli cream color. Pronotum with disk ochraceous-buff, remaining portions transparent light ochraceous-buff. Tegmina transparent ochraceous-buff. Wings clear hyaline and weakly iridescent, with area of costal 'eins weakly washed with ochraceous-buff proximad and distad and heaxily washed with light Iniff mesad. Dorsal surface of abdomen light ochraceous-buff, with hair tufts ochraceous-tawny and besides suffused distad with this color. No darker specimens are before us. In the palest specimens at hand the darkest portions, disk of pronotum and hair tufts on alxlomen. are ochraceous-buff.
"^ The styles haing been de^troNcd in the tNjie, these features are described from a topotype.
9 . General coloration auburn, with a strong chestnut tinge. Coxae and proximal portions of limbs ochraceous-buff, tinged with ochraceoustawny .
Large immature males are found to agree with the female sex in the large, evenly convex head, with widely separated eyes and ocellar spots, pronotal form and absence of discal sulci and form of supra-anal plate.
The known distribution of the species is covered by the records given below. It will unquestionably be found, probably widely distributed, in adjacent northern Mexico.
Specimens Examined: 15; 7 males, 3 females, 5 immature individuals.
Arizona, i cf, [Hebard Cln.].
Prescott, Ariz., i cf , [A. M. N. H.].
Galiuro Range, Ariz., V, 26, (H. G. Hubbard), i o^'= [U. S. N. M.].
Sabino Basin, Santa Catalina Mountains, Ariz., 3750 feet, VII, 11, 1916, (Rehn and Lutz; trapped, molasses jar, under oaks), i 9, [A. M. N. H.].
Sabino Canyon, Santa Catalina Mountains, Ariz., XI, 15, 1915, (J. F. Tucker; under bark of willows), i juv. c?, i juv. 9 , [Hebard Cln.].
Kit's Peak Rincon, Baboquivari Mountains, Ariz., about 4050 feet, VIII, i to 4, igi6, (Lutz and Rehn), i juv., [A. M.N. H.].
Santa Rita Mountains, Ariz., V. 29, i &, [U. S. N. M.]; VII, (F. H. Snow), i d^.i^e I 9 , [U. S. N. M. and Univ. of Kansas Cln.].
Palmerlee, Cochise County, .A.riz., (C. Schaeffer). i 9,i" allotype, i juv. cf, [Bklyn. Inst.].
Reef, Cochise County, Ariz., (C. R. Biederman), i juv. c?, [U. S. N. M.].
Huachuca Mountains, Ariz., VIII, 22, 1903. (E. J. Oslar), i cf, type,^^» [U. S. N. M.]; I cf 1'^ [Bklyn. Inst.].
Patagonia Mountains, Ariz., V, 15, 1903, (E. J. Oslar), i d",^*" [U. S. N. M.].

Parcoblatta notha, the Arizona wood cockroach, is a species of wood cockroach that occurs only in the southwestern US state of Arizona. It is a relatively large, light colored member of the 12-species wood cockroach genus Parcoblatta. The male has fully developed wings and is able to fly, while the female wings are around half as long and does not fly.