Blattidae Burmeister 1838

Lucañas, Cristian C., 2021, Bundoksia gen. nov. (Dictyoptera: Blattodea: Blattidae), a new sexually dimorphic cockroach from the Philippines, Journal of Natural History 55 (15 - 16), pp. 1009-1020 : 1010-1011

Family Blattidae Burmeister 1838

Remarks. Sexual dimorphism, particularly differences in the development of tegmina and wings are common in Archiblattinae ( Wang et al. 2016) and Blattinae ( Bohn 1985) . Except for Eroblatta Shelford, 1910 , all members of Archiblattinae are known to have macropterous males and brachypterous females ( Wang et al. 2016). Meanwhile, five Blattinae genera: Pseudoderopeltis Krauss, 1890 ; Deropeltis Burmeister, 1838 ; Cartoblatta Shelford, 1910 ; Shelfordella Adelung, 1910 , and Blatta L., 1758, exhibit such dimorphism, as well as three species Periplaneta : P. arisanica Shiraki, 1931 , P. formosana Karny, 1915 , P. ceylonica Karny, 1908 ( Asahina 1980) .

With the current debate on the validity of Archiblattinae as a subfamily, and its monophyly ( Wang et al. 2016), and the characters of Bundoksia gen. nov. being intermediate between the two subfamilies, a key to Archiblattinae and sexually dimorphic Blattinae is provided.

Key to Archiblattinae and Sexually Dimorphic Blattinae genera (modified from Mann, unpublished key, pers. comm.)

(1) Mid and hind femur sparsely armed ( Figure 2 (f,g)).. ........................................................ 2

- Mid and hind femur strongly armed... ................................................................................... 6

(2) Cerci tapering, apically pointed ( Figures 2 (h,g))... ............................................................. 3

- Cerci apically rounded.. ................................................................................................................ 5

(3) Pronotum smooth; sides thin, slightly deflexed. Hind tibia dorsoventrally flattened, strongly spined ( Figure 2 (e)).. ............................... .............................. Bundoksia gen. nov.

- Pronotum rugose; sides thickened, not deflexed. Hind tibia cylindrical, sparsely spined.. ................................................................................................................................................. 2

(4) Tibial spines moderately developed; spines on outer aspect triserately arranged... ...................................................................................................................... Eroblatta Shelford, 1910

- Tibial spines sparse, spines on the outer aspect of the tibia biserately arranged.. .. ............................................................................................................... Protagonista Shelford, 1908

(5) Pronotum strongly rugose; hexagonal in males; rounded in females with posterolateral margins acute and spine-like. Anteroventral margin of femur weakly armed. Hind tibial spines relatively elongate.. ....................... ...................... Catara Walker, 1868

- Pronotum slightly rugose, trapezoidal in both sexes. Anteroventral margin of femur unarmed. Hind tibial spine short and stout.. ............. Archiblatta Vollenhoven, 1862

(6) Male: first abdominal tergite specialised. Female: hindwings present or absent... 7

- Male: first abdominal tergite unspecialised. Female: hindwings absent.. ... ... ... ....8

(7) Abdominal tergite 6 and 7 sunken. Female: Tegmina squamiform, hindwings absent.. ............................................ ........................................... Pseudoderopeltis Krauss, 1890

- Abdominal tergite 6 and 7 not sunken. Female: Tegmina quadrate, hindwings reduced.. ..................................................................... Periplaneta Burmeister, 1838 (in part)

(8) Posterior margin of fifth abdominal tergite distinctly concave medioposteriorly. Female: Tegmina and hindwings absent.. ............ ........... Deropeltis Burmeister, 1838

- Posterior margin of fifth abdominal tergite not or only slightly concave medioposteriorly. Female: Tegmina present... ........................................................................................ 9

(9) Hind basitarsomere slightly shorter than succeeding tarsomeres combined; apical tarsal spine absent.. ..................................................................... Cartoblatta Shelford, 1910

- Hind basitarsomere distinctly longer than succeeding tarsomeres combined; apical tarsal spine present.. ................................................................................................................... 10

(10) Pulvilli of anterior and median metatarsus elongate. Female: Tegmina quadrate... ................................................................................................................ Shelfordella ; Adelung, 1910

- Pulvilli of anterior and median metatarsus short. Female: Tegmina squamiform.. .. .......................................................................................................................... Blatta ; Linnaeus, 1758

Figures

Figure 2. Bundoksia rufocercata (Shelford 1911) comb. nov.: (a) Male habitus; (b) Female habitus; (c) Head; (d) Posterior margin of metanotum and 1st abdominal tergite; (e) Prothoracic leg; (f) Mesothoracic leg; (g) Metathoracic leg.; (h) Male supraanal plate; (i) Male genitalia and subgenital plate.