Matsucoccus, Cockerell, 1909

Ahmed, Muhammad Z., Ray, Charles H., Moore, Matthew R. & Miller, Douglass R., 2020, The Matsucoccus Cockerell, 1909 of Florida (Hemiptera: Coccomorpha: Matsucoccidae): Potential pests of Florida pines, Insecta Mundi 2020 (810), pp. 1-31 : 8

Key to Matsucoccus species from the eastern U.S. based on adult females

1. Venter with two sizes of setae; setae anterior of hind coxae and in medial areas of abdomen noticeably longer than other ventral setae......................................................... 2

— Venter with one size of ventral setae; setae anterior of hind coxae approximately same length as other ventral setae.............................................. M. alabamae Morrison ( Fig. 6 )

2(1). Cicatrices present on metathorax or abdominal segment I..................................... 4

— Cicatrices absent from metathorax and abdominal segment I.................................. 3

3(2). Cicatrices present in four rows on abdominal segments III–VI; cicatrices greater than 15 µm in diameter; with less than 100 cicatrices................................... M. macrocicatrices Richards

— Cicatrices present in five rows on abdominal segments II–VI; cicatrices less than 15 µm in diameter; with more than 100 cicatrices....................................... M. matsumurae (Kuwana)

4(2). With 20–32 multilocular pores; with 170–378 cicatrices; cicatrices in medial and mediolateral areas, but not in lateral areas......................................... M. gallicolus Morrison ( Fig. 10 )

— With 36–72 multilocular pores; with 437–900 cicatrices; cicatrices in medial, mediolateral, and lateral areas on some segments................ M. krystalae Ahmed and Miller , new species ( Fig. 12 )

Figures

Figure 6. Matsucoccus alabamae Morrison. Adult female. Duval Co., Florida 9A, West of Yellow Bluff Fort Historic State Park, Jacksonville, Florida, November 1, 2018, on Pinus sp., M. Lara. A) Antenna. B) Thoracic spiracle.C and H) Short ventral filamentous seta. D) Hind tibia. tarsus, claw. E) First abdominal spiracle. F) last abdominal spiracle. G) Multilocular pore. I) Dorsal filamentous seta. J) Dermal pattern. K) Bilocular tubular ducts. L) Cicatrix.

Figure 10. Matsucoccus gallicolus Morrison. Third-instar male. Cooper River, Charleston, South Carolina, April 4, 1909, on Pinus taeda, S.G. Sanders. A) Apical four antennal segments. B) short filamentous seta. C) Thoracic spiracle. D) Hind tibia, tarsus, and claw. E) 1st abdominal spiracle. F) Long filamentous seta. G) 6th abdominal spiracle. H) Bilocular tubular ducts. I) Short dorsal filamentous seta.

Figure 12. Matsucoccus krystalae Ahmed and Miller, n.sp. Third-instar male. St. Lucie Co., Ft. Pierce, Florida, March 20, 2018, on Pinus ellottii, B. Saunders. A) Seventh and eighth antennal segments. B) Basal antennal segments. C) Thoracic spiracle. D) Long filamentous seta. E) Hind tibia, tarsus, claw. F) Short filamentous seta. G) Abdominal spiracle. H) Dermal pattern. I) Bilocular tubular ducts. J) Dorsal filamentous seta.