Louis M. Roth.
A New Species of Galiblatta from Brazil (Blattaria, Blaberidae).
Psyche 75:249-255, 1968.

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A NEW SPECIES OF GALIBLATTA FROM BRAZIL
( BLATTARIA, BLABERIDAE) .
Pioneering Research Laboratory
U. S. Army Natick Laboratories
Natic-k, Massachusetts 01 760
The genus GaZiblatta Hebard includes a single species G. cribrosa Hebard, described from St. Jean du Maroni, French Guiana (Hebard, 1926).
According to Bruijning (1953) the species is also common in the interior of Surinam.
Princis' ( 1963) catalogue records only
the above 2 references under Galiblatta and the genus is not included in Rocha e Silva Albuquerque's (1964) checklist of Brazilian cock- roaches.
This paper contains the description of a second species of Galiblatta, closely related to G. cribrosa, which I collected near Manaus, Brazil. The original adult male and female were collected under palm frond debris on July 29, 1967, and the female gave birth on September 19, 1967. Fifteen individuals were reared and all were males ( 14 adults, I nymph) ; no females were produced in this litter. The female had oviposited again by October 4, but died before giving birth again. Galiblatta williamsi new species.
(Figs. 1-3, 6-8, 12-16, 20)
Male: The number of chromosomes in the male (cells in the testes of one nymph were examined) is 2n -Ì 27; presumably the female has 2n = 28. In addition to mitotic chromosomes (Fig. I), cells with 13 and 14 meiotic chromosomes were seen. The male of G. williamsi (Fig. 2) differs from G. cribrosa (Fig. 4) principally in the structure of one of the left phallomeres. The phallomeres LI (Figs. 12, 17), and R2 (Figs. 14, 16, 19) are very similar in botti species. However. Lad of cribrosa (Fig. 18) is more elongate and tapered than in williamsi (Figs. 13, 15) ; and the apical portion of Lad is tuberculate in cribrosa (Fig. 21) and smooth or slightly rugose (Fig. 20) (perhaps this is due to clearing and mounting the specimen on a slide) in williamsi. Hebard (1926) in his generic description of Galiblatta stated that the styles were ". . . partially or wholly atrophied" and in G. cribrosa (Hebard, 1926, p. 237, footnote 109) the sinistral style in the male is absent ". . . apparently due to atrophy." Both styles of the male of G. williamsi are well developed (Fig. 10). though Paths 75:249-255 t 1W). http:ffpsyche.cnlclub.orBf75/7i-249 hlml



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250 Psyche [September
Fig. 1. Chromosorncs (mitotic metaphase) from the testes of a male nymph of Galiblatta williamsi sp. nov. (2n = 27). the left one is smaller than the right. It is probable that the left styles in Hebard's 2 specimens were broken off; under high magni- fication a small rough-edged stump represents the point of attach- ment of the left style in the type specimen of cribrosa (Fig. I I, arrow).
The coriaceous punctulate tegmina of williamsi are shown in Fig. 6. The wings of the 2 species differ in that cribrosa (Fig. 9) has 3 complete and 2 incomplete brmches of the ulnar vein, running somewhat obliquely posteriorly. In williavzsi (Fig. 8) there are apparently only 2 complete and about 3 incomplete branches of the ulnar vein; the basal third of one of the complete branches is oblique but then runs longitudinally to the wing margin. The adult male of williamsi is darker in tone than cribrosa. The adult males of both species of Galiblatta lack tergal glands. The
male nymph (Fig. 7) shows the faint meso-lateral abdominal mark- ings present in the female.
Female, AIIotype: The most striking differences between the females of G. williamsi and G. cribrosa are found in the tegmina, and shape of the thorax.
The whole anterior half (tegmina and
pronotum) of cribrosa (Fig. 5) is more strongly tapered and convex



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Roth - Galiblatta 251
Figs. 2-3.
Adults of Galiblatta williamsi sp. nov. 2. Male. 3. Female, Allotype. Taruma-Acu, Rio Negro, Amazonas, Brazil. Figs. 4-5.
Adults of Galiblatta cribrosa Hebard. 4. Male, Type (No. 1029 A.N.S.P.).
5. Female, Allotype. St. Jean du Maroni, French Guiana (Acad. Nat. Sci. Philadelphia).
(Horizontal bars = 5 mm.)




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Psyche [September
Figs. 6-8. GaSMutta wiHiamsi sp. nov. 6, Male tegmina. 7. Full grown nymph. 8. Left male wing.
Fig. 9. Galiitluffa cdrosa Hebard. Left male wing (Type No. 1029 A.N.S.P.). (Line = 5 mm,)
EXPLANATION OF PLATE 20
Figs. 10-11. Posterior portions of maie siibgenital plates (ventral). 10. Gdiblafta williumi sp. nov. 11. Gdibiattu cribroia Hebard (Type No. 1029 A.N.S.P.). (Both specimens are split OB the left side due to flattening; arrow in Fig. 10 indicates the probable point of attachment of the left style.) Figs. 12-21. Phallomeres of male genitalia. 12-16, GaliMatfa wiliiami ap. nov. 12. First sclerite of left phallomere (LI). 13, IS. Part of median sclerite (L2vm) and left dorsal sclerite (L2d). 14, 16. Hooked sclerite of right phaliomere (R2).
(Parts shown in Figs. 12-14 from specimen A, and those in 15 aod 16 from specimen B). 17-19. Galaafta crihrosa Hebard. Phallomeres of maic genitalia (comparable to those shown in Figa. 12-14) of Type No. 1029 (Figs. 12-19 enlarged to scale shown in Fig. IS). 20-21. Enlarged apical portions of L2d. 20. Galiblafta viilliami (from Fig. IS). 21. Galiblatta cdrosa Hebard (from Fig. 18). (Terminology after Mc- Kittrick, 196+.)




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254 Psyche [September
than in williamsi (Fig. 3). The tegminal pads in cribrosa are attingent and uniformly colored. The costal margins of the tegmina of williamsi are brownish yellow and the pads are distinctly separated from one another. The abdomens of both species are punctulate, but the punctulations are fine in cribrosa and coarse in lwilliamsi. Measurements for both species are given in Table I. Princis ( I 963) placed Galiblatta in the Laxtinae. McKittrick examined a male of G. williainsi and stated (personal communica- tion) that it belongs in the Epilamprinae of her classification (Mc- Kittrick, I 964).
Type c? (No. 70220), allotype Q, 4 male paratypes (type and paratypes reared from the allotype 9) and one male nymph are deposited in the U. S. National Museum.
Type locality: Taruma-Ap (along a secondary river leading into the Rio Negro) about 15 Km. northeast of Manaus, Amazonas, Brazil.
The species is named after Dr. Carroll Williams, who headed Phase C of the Alpha Helix Expedition to the Amazon. Table 1. Measurements (mm.) of two species of Galiblatta. Length of body $
9
Length of pronotum $
?
Width of pronotum $
Q
Length of tegmen $
9
Width of tegmen $
9
Width of abdomen $
?
G. cribrosa Hebarda G. williamsi sp. ~ O V . ~ "Measurements of type (8 ) and allotype ( 9 ) are followed by those of paratypes. From Hebard (1926).
"Measurements of type ( $ ) and allotype ( 9 ). 'Greatest exposed lateral length.




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19681 Roth - Galiblatta 255
The new species was collected during Phase C of the Alpha Helix expedition to the Amazon in
1967. I thank the National Science
Foundation for support on the Amazon expedition under Grant NSF-GB-5916, Dr. M. G. Emsley for loan of the types of Gali- blatta cribrosa Hebard from the Academy of Natural Sciences of Philadelphia, Dr. Ashley Gurney for his helpful suggestions, and Mr. Samuel Cohen for making the chromosome preparation and for the photographs.
REFERENCES
BRUIJNING, C. F. A.
1959. The Blattidae of Surinam.
Studies on the Fauna of Suriname and
other Guyanas. Vol. 2: 1-103.
HEBARD, M.
1926. The Blattidae of French Guiana. Proc. Acad. Nat. Sci. Phila- delphia, 78 : 13 5-244.
MCKITTRICK, F. A.
1964. Evolutionary studies of cockroaches. Cornell Univ. Agr. Exp. Sta. Memoir 389, 197 pp.
PRINCIS, K.
1963. Orthopterorum Catalogus. Pars 4: Blattariae: Subordo Polypha- goidea : Fam. : Homoeogamiidae, Euthyrrhaphidae, Latindiidae, Anacompsidae, Atticolidae, Attaphilidae. Subordo Blaberoidea: Fam. Blaberidae. 's - Gravenhage, pp. 76-172. ROCHA E SILVA ALBUQUERQUE, I,
1964. Checklist dos Blattaria Brasileiros. Bol. Mus. Emilio Goeldi (n.s.) Zoologia, 41 : 1-37.




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