Latiblattella lucifrons Hebard 1917

Latiblattella lucifrons new species (Plate I, figures 18 to 23.)
1907. BlutteUa dihitata Rehn, {not Blatta dilatata Saussure, 186S). Proc. Acad. Xat.
Sci. Phila., 1907, p. 26. [c^, 9 , Palmerlee and Huachuca Mountains, Arizona.] 1910. Blattella dilatata Rehn, (not Blatta dilatata Saussure, 1868), Kansas Univ.
Sci. Bull., x', p. 300. [o 9 , Santa Rita Mountains, Arizona, 5000 to 8000 feet.]
At the time the above determinations-^^ were made, Saussure's dilatata was known only from the female type from Orizaba, Mexico, with the description of which, females of the present species agreed better than with those of any other known species. Though we unfortunately have no topotypic material of that species, we have a pair from San Jose del Cabo, Lower California, and a male from Sierra El Tosti, Lower California, the latter taken in October, 1893. by Gustav Eisen. These specimens are apparently typical of dilatata. When compared with the present species, the males are found to be in general quite similar, but with very distinctive genital characters, of which one of the most striking is the production of the latero-caudal angles of the sixth dorsal abdominal segment and the decided constriction of the seventh and eighth. The female is, in general, quite similar to that sex of the present species, but has the tegmina and wings less reduced, extending, as in the type of dilatata, slightly beyond the apex of the abdomen.
The present species shows nearest relationship to L. rehiii, males of this insect bear to males of that species a close resemblance; they are separable by genital features, by the wilder interocular space, strikingly paler vertex and normally decidedly heavier ventro-lateral brown bands. ' In both sexes the head has the interocular-ocellar area more flattened, with eyes less decidedly projecting laterad, than in rehni. The females of the two species are very different; in rchni this sex does not dift'er widely from the male, while in the present species the sexes are very dissimilar, the female having the pronotum much broader with caudal margin nearly straight, while the disk of the pronotum is much more embrowned, as is the dorsum of the abdomen, which is but partly concealed by the consideral)ly more abbrexiate tegmina and wings.
^'^ All of the material upon which these were based is now before us and is listed below.
Type. — c/^ ; Santa Rita Alountains, Arizona. Elevation 5000 to 8000 feet. July. (F. H. Snow.) [University of Kansas Collection.]
Description of Type. — Size medium, form moderately broad. Head with interocular space fully three-quarters that between antennal sockets; inter-ocular-ocellar area distinctly flattened; ocellar spots moderately distinct; very small circular areas with surfaces very feebly convex are apparent meso-ventrad and adjacent to antennal sockets. Maxillary palpi with distal joint large, in length not quite equal to penultimate joint, which is shorter than third joint in relatively greater ratio. Pronotum as in rehni. Tegmina and wings much as in that species, the wings, however, with veins slightly paler. Abdomen with proximal dorsal segments unspecialized; sixth with a semicircular depression mesad, even deeper and more sharply defined than in rehni, fringe of hairs cephalad similar, but with hairs on dorso-cephalic face of knob decidedly shorter, agglutinated and parting from a medio-longitudinal line, caudad of the knob the segment is subchitinous as in rehni, but with margin convex, feebly produced, showing very slight emarginations at the latero-caudal bases of the knob, latero-caudal margins of this segment weakly subrectangulate produced with apex bluntly rounded; succeeding segments decidedly constricted, decidedly narrower in transverse section, brief exposed portions of seventh and eighth segments very delicate in structure. Supra-anal plate transverse, weakly triangularly produced with apex weakly bilobate. Ventro-mesad, within the anal chamber, a soft integument projects from base of subgenital plate, with filaments converging distad and terminating in an acute-angulate projection with apex rounded, soft, except narrowly along its dextral margin where it is chitinous, the lateral margin of this chitinous section being thickly supplied with minute, microscopic, chitinous spines, directed cephalo-laterad. Above this integument, a similar but more slender, soft integument extends farther caudad, above from this mantle springs an elongate, spiral, chitinous thorn, longer than the analogous thorn in rehni, directed caudad. Subgenital plate not large, somewhat asymmetrical; the disto-mesal section of this plate is produced, directed upward, its margin roughly rotundato-angulate on each side and slightly more produced sinistrad; the mesal portion of the plate is deeply cleft on each side toward its mesal section, the lateral sections thus formed being produced mesad over the mesal section in two slender, flattened projections (the styles), while within from the base of the sinistral process a more strongly chitinous, cylindrical process is directed perpendicularly dorsad, with enlarged apex flattening out caudad with margins rounded, its flattened dorsal surface on a level with the slender projecting apices of the lateral processes. Limbs and armament of same as given in generic description.
Allotype. — 9 ; same data as type. [University of Kansas Collection.]
Description of Allotype. — Agrees with male except in the following features. F"orm much broader. Head with interocular space wider, fully four-fifths as wide as
space between antennal sockets. Pronotum very decidedly broader, with caudal angles much more sharply rounded. Tegmina and wings decidedly reduced, falling slightly short of apex of abdomen, the tegmina more corneous in structure with discoidal sectors fewer (6 often, due to the decided reduction). Dorsal surface of abdomen not specialized. Supra-anal plate broad, triangular in general outline, with apex blunted (in other specimens slightly emarginate), lateral margins weakly concave (in other specimens to varying degrees). Subgenital plate of same type as in rehni, but with lateral portions not as much raised, emargination where cerci project less decided and meso-distal cleft shorter.
Measurements {in miUimeters)
-, Length of Length of Width of Length of Width of
*-' body pronotum pronotum tegmen tegmen
Santa Rita Mountains,
Arizona, type 12.3 3.3 4.8 13 -7 4-
Santa Rita Mountains,
Arizona, /)ara/ypc5 . . (3) 11.9-13.4 3-3-3-4 4MS I3-9-I4-6 4I-4-2 Huachuca Mountains,
Arizona 12. i 3.2 4.6 13.7 4.3 Santa Rita Mountains,
zonsL, allotype ... . 12.5 3.8 5.5 8.7 3.7
Huachuca Mountains,
Arizona (3) 12. 2-13. 7 3-7-4 5-3-5-6 8.6-9 3-4-3 -^
Coloration. — cf. Glossy ; warm buff in general coloration. Head with vertex strikingly pale buff, ocellar spots of same color, the remaining portions of face maculate with prout's brow^n. Eyes deep mummy brown. Antennae proximad warm buff, darker beyond specialized joints. Maxillary palpi warm buff somewhat suffused with brown. Pronotum as in rehui. Tegmina and wings much as in that species, the latter with veins paler. Dorsal surface of abdomen warm buff, but very broadly suffused on each side with mummy brown, leaving only narrow lateral margins and a mesal line of the paler coloration; ventral surface warm buff suffused on either side with a heavy band of dark muninubrown, the remaining brief lateral borders of these segments narrowly whitish. Cerci prout's brow^n.
9 . Similar to male, but generally the l)rowns are more tawnThis particularly noticeable on disk of pronotum, w'hich is mottled ochraceous-buff and ochraceous-tawny, with specks of cinnamon.
Tegmina transparent buckthorn brown. Dorsal surface of abdomen more heavily suffused, mesal line absent in darker specimens. General coloration of ventral surface of abdomen, russet.
Ootheca. — The only ootheca before us is very slightly extruded. We can, however, say that the surface is smooth, the caudal margin perpendicular, feebly convex throughout, the width 3.1 millimeters. It is carried with suture dorsad.
The material recorded below is all that is known of this interesting species.
Specimens Examined: 12; 7 males and 5 females.
Huachuca Mountains, Arizona, (C. Schaeffer), i d', 4 9 , [B. I., U. S. N. M. and Hebard Cln.].
Garces, Huachuca Mountains, Ariz., i d", [U. S. N. M.].
Santa Rita ^Mountains, Ariz., over 5000 feet, VI, VII, (F. H. Snow), 4 d", i 9 with ootheca, type, allotype, paratypes, [Univ. Kansas, Hebard Cln. and A. N. S. P.].
Kit's Peak Rincon, Baboquivari Mountains, Ariz., 4000 feet, VIII, i, 1916, (Rehn and Lutz; at light), i &, [A. M. N. H.].

Latiblattella lucifrons, the pale headed cockroach, is a species of cockroach in the family Ectobiidae. It is found in Central America and North America.